Alfa Bertone GT junior

Verkauft - Sold

2011-04-10T12:08:00.003+02:00

Hallo Alfisti,

nach 8 Jahren Auf- und Umbau meines GT 1300 Junior trenne ich mich vom meinem Schätzchen.

Technische Daten:
- Bj. 1972 (ex Sardinien) - H-Kennzeichen
- TÜV/AU 09/2012 ohne Mängel
- Farbe rosso Ferrari L303
- seit 2003 nur 12500 km gefahren (2. Hand in DE)
- Restauration in Deutschland, 90er Jahre (mit Fotodoku)
- Mike Sanders Hohlraumfett (Schweller, Unterboden TOP)
- seit 2003 kein Regen/Schnee

- Motor 1600 ccm (Basis Giulia Nuova 1975)
- Zylinderkopf überarbeitet, Verdichtung erhöht, Nockenwellen mit neuem Profil (Straße, Drehmoment)
- Ansaugkanalverlängerungen (V. Hauser)
- Weber 40 DOHC neu bedüst und synchr. mit Serienluftfilter, K&N-Filter
- Fächerkrümmer 4 in 2 in 1
- Sportauspuff (System Götzelmann) mit super bassigem Sound
- Metallkat ungeregelt
- Elektrolüfter
- Alu-Catchtank für Ölnebel
- Kupplung neu
- Kardanwelle komplett neu gelagert, Hardyscheibe neu
- Einstellbare obere Querlenker an VA, PU-Strebenlager
- Bremse an VA komplett neu (Brembo Al-Sättel, Stahlflex, GG-Scheiben, Serienbeläge)
- Radsatz wahlweise 185/70 auf 14" Momo Al-Räder (zeitgenössisch)
- oder 195/60 auf 15" Alu mit Bridgestone RE72 (modern, Fahrdynamik)
- Holzlenkrad 1A+++ aufgearbeitet (Hellebore, Fa. Tescari)
- Interieur schwarz, Sitze aus GTV 2000 neu gepolstert und Kunstleder bezogen
- Türtafeln neu bezogen
- Blaupunkt RC mit Chromblende zeitgenössisch
- Zusatzinstrumente, Öltemp., Voltmeter
- 12V Batterie im Kofferraum in Box
- Chromteile Außenspiegel (2x), Türgriffe neuwertig
- Umrüstung auf H4
- Zusatzfernscheinwerfer Bosch (orig. 70er, 100W Schwedenausführung)
- viele Optimierungen im Detail
- Wartungen bei St. Götzelmann und Italauto

Fixing Steering Gearbox Leakage

2010-09-24T20:31:00.000+02:00

Because of some oil on the Burman steering gear housing I supposed that there would be a leakage on the o-ring of the steering arm. In this case it is recommended to fill the steering box completely with Molycote Longterm 00 grease. This is a heavy duty dark grey grease for gears with partially high loads. To open the top cover plate remove the four screws. Two of them have nuts. I my case the steering gear box was already filled with grease and the oil spray came from the oil catch tank in the neighborhood.

Mobile Amateur Radio Station

2010-08-01T12:53:00.000+02:00

Amateur Radio DC4FP/m(obile) with 145 MHz 9-element Yagi antenna. The Location is 500 m above NN in JN48JR near the Black Forest in South Germany.

Hochfrequenz-Ausbreitungsbedingungen für Amateurfunk

2010-06-16T13:59:00.001+02:00

MSC Herrenberg - Rallye 2010

2010-05-10T14:35:00.002+02:00

MSC Herrenberg's rallye was great fun this year. We had to use our tripmaster and chronometers and should have been an expert in German literature. Cruising through the Tübingen area we passed the famous "Wurmlinger chapel". One special stage was to quote the first two lines of Ludwig Uhland's poem:

Die Wurmlinger Kapelle

Droben stehet die Kapelle,
schauet still ins Tal hinab,
drunten singt bei Wieß´und Quelle,
froh und hell der Hirtenknab.

Traurig tönt das Glöcklein nieder,
schauerlich der Leichenchor;
stille sind die frohen Lieder,
und der Knabe lauscht empor.

Droben bringt man sie zu Grabe,
die sich freuten in dem Tal.
Hirtenknabe, Hirtenknabe,
dir auch singt man dort einmal.

No. 88 - ready for start

Adjustable Upper Lateral Links

2009-09-06T18:31:00.005+02:00

The upper lateral steel link has a thread welded in and two nuts. This allows me to adjust the wheel camber to -1 deg. On the left side of the upper ball bushing you can see the polyurethane (PU) bushing from Superflex inside the fork of the longitudinal link (castor arm). Powerflex part no. is PFF1-301. Similar PU bushings can be found at SuperPro.

Wheel Alignment Data Sheet

2009-08-12T11:51:00.007+02:00

Front Axle Kinematic Settings

Camber with serial upper links (non adjustable): 0° 20’ (tolerance +/- 0° 30’)

Camber with adjustable upper links (preferred): -1° 00’ (tolerance +/- 0° 10’)

Camber difference right/left wheel max.: 0° 40’

Toe (total axle) steering wheel straigt ahead: 3,0 mm (tolerance +/- 0,5 mm)

Toe angle @ 15“ wheels: 0° 13’

Toe angle @ 14“ wheels: 0° 14’

Toe difference angle @ 20° steering angle: n.c.

Caster adjustable at longitudinal link: 1° 30’ (tolerance +/- 0° 30’ )

Preferred sporty caster value: 2° 45'

Caster difference right/left wheel max.: 0° 20’

Kingpin inclination: 8° 35’ (tolerance +/- 0° 30’) not adjustable

Preferred sporty kingpin inclination: 9° 35'

Rear Axle Kinematic Settings (rigid axle)

Camber (non adjustable): 0°

Camber difference right/left wheel max.: 0°

Toe angle (non adjustable): 0°

Caster: n.c.

Testing conditions:

Put 45 kg weight on each driver and copilot seat. And another 25 kg in both foot rooms. No passengers inside, fuel tank full.

Oil Temperature Sensor

2009-07-07T17:49:00.009+02:00

I experimented with an oil temperature sensor instead of the oil dipstick but the device was broken over the time and I had oil leakage problems. Now I replaced it by a temperature sensor in an additional flange between oil filter and engine block. I used a kit by Raid Automotive Concepts. It has a 3/4 unf thread for conventional W718/2 Alfa/FIAT oil filter cartridges and a conventional oil filter mounting pedestal. The anodized aluminum extra flange is able to accept a small sensor with 1/8 inch 27 NPT conical thread.

Sensor specs of the new oil filter sensor: 1,8 kOhm @ 20°C - 150 Ohm @ 100°C

Tiefenbronn Classic Rallye 2009

2009-06-22T17:23:00.010+02:00

This year's Tiefenbronn Classic an Sunday, 21st of June had a lenght of about 130 km between the nothern part of the Black Forest and the river Enz wine region. Almost 200 cars and 20 historic bikes participated. Among them were former Mille Miglia competitors Herbert Linge and Paul Ernst Strähle with their historic beetle and Porsche 356 "V2". Among the ancient heroes we also met Eberhard Mahle, Günter Steckkönig and Paul Hensler - all familiar with historic Porsche cars.

Here is the GT junior in the Bad Liebenzell Park. In the youngtimer class from 1972 our grid number was 121.

Radiator Thermoswitch

2009-05-10T17:37:00.009+02:00

I replaced the adjustable Kenlowe thermoswitch by a fixed thermostatic switch. Radiator on @ 88°C - off @ 83°C. The switch comes from a Volvo 360 and it's metric screw is M14 x 1.5. The copper T-shaped fitting comes with a tube diameter of 32 mm (2000cc engine needs min. 35 mm). It's mounted in the lower radiator hose between the radiator and the water pump. Customized T-fittings are available at Schweizer-Motorsport.

Trunk Lid Repair

2009-03-01T17:38:00.003+01:00

After a little welding job the trunk lid was painted red again (Ferrari rosso l300).

Photo Competition @ MotorKlassik

2009-02-18T11:01:00.009+01:00

*** Sorry, the Alfa was not the best photo of the show! ***

Win a Leica C-Lux compact camera and vote for one of my photos at the MotorKlassik photo competition (see MotorKlassik magazine no. 3/2009) and on the net here:

MotorKlassik online

This is my photo of the GT junior taken in autumn 2008. It was the fist test drive with the new 6 x 14 MOMOs.

This one I took at the Neuenbürg Classic Day in September 2008. Nice gauges! Water resistant?
Please guess - what muscle car is it?

Oldtimer Meetings and Competitions 2009

2009-01-18T18:15:00.006+01:00

We will participate in these 2009 events:

21.06. 2.Tiefenbronn Classic Oldtimer-Freunde-Tiefenbronn
27.-28.06. 10. Bosch Boxberg Klassik

and next year:

Mai 2010: GÄU Veteranen-Rallye MSC Herrenberg

MOMO Vega Wheels 6 x 14"

2008-09-20T18:29:00.006+02:00

The Vegas finally are powder coated, tyres 185/70 R 14 (with tubes) are mounted. The steering needs less effort when driving in a bend or parking compared to the former 195/60 R 15 Bridgestone. However steering characteristics offer a very good increase in handwheel force over lateral g's.

Neuenbürg Castle Sept. 15th, 2008

2008-09-17T22:59:00.005+02:00

These are the Alfa participants of the 2008 Neuenbürg Event in the old castle yard.

Speedometer Optical Tuning

2008-09-14T11:59:00.005+02:00

An additional 12V 4W instrument light bulb with it's BA9S socket is mounted on the back of the speedometer housing. On my car instrument ligths are very weak.

I recently had to open the speedometer because of a failure. By the way I cleaned the mechanics from dust and grease and put the SNO logo and the gear switch pic on the dial. Both are decals printed with an inkjet printer. The gear logo is scanned from the Giulia manual. The checkered flag showes the city limit area.
The speedo accuracy can bei easily adjusted on Jaeger instruments by a screw on the back side. Odometer rolls (km) can also be tuned independently.

Mini Catalytic Converter

2008-09-02T08:41:00.005+02:00

Why not supporting environmental protection with our historic cars? Here is an easy and cost effective way to integrate a catalytic converter into the exhaust system. I use the Tenneco Walker Mini Converter. I has a diameter of 55.5 mm and was planned to use in the Audi Coupe 2.3l 5-Cyl. (Walker type no. 52590-03W). Other diamerters (42.5 mm, 45.5 mm, 50.5 mm) are also available.

The converter is intergrated in the exhaust pipe just behind the 2 in 1 tube of my CSC sports exhaust system with stainless steel pipe clamps. Sealing compound is recommended. It should be mounted as near as possible to engine's exhaust ports.

There is no special engine control system. I run stock Weber 40 DCOE carbs. Ok, this is not very effective in terms of emission reduction but better than nothing. I can't measure any significant engine power reduction due to the streamlined sheet metal catalyst technology.

High Beams Finally Mounted

2008-07-05T18:15:00.004+02:00

Here are the original chromed Bosch high beams mounted on the GT junior. You see the protector caps I taylored last year.

7. Veteranenausfahrt MSC Weil der Stadt

2008-07-02T16:41:00.006+02:00

Saturday, 28th of June I finished 3rd at the historic rallye of the Motor Sport Club Weil der Stadt.
It's not worth complaining but I could have been first in my class. At trial no. 3 my bicycle odometer showed wrong speed values. I couldn't keep the average speed of 30 kph and got 33 penalty points - what a mess!

Tho photo shows a BMW Dixi with a rare "Ihle 600" body behind the Volvo. The BMW- or Dixi Ihle has a wooden handmade body on a 3/15PS chassis manufactured between 1930 and 1934.

Momo Vega 6 x 14" Alloy Wheels

2008-07-02T16:25:00.005+02:00

Recently I got the chance to buy a set of four aluminum wheels. They are called MOMO "Vega" dated from 1972. MOMO is an italian manufacturer - you might know their steering wheel collection. The size is 6 x 14" fitting exactly on the Alfa GT junior. I found out that the rims are rather 6.5 that 6.0 inches. This will give a good cornering stiffnes with my Barum 185/70 R 14 classic tires. There is no H2 hump - so there is no chance to use tubeless tires. The well known Alfa hub caps of the 5-spoke Cromodora CD-35 wheel are supplied with these outstanding contemporary wheels.

The wheels must be glas-sanded and re-painted. Silver paint or two-colour black/silver would be nice. Even powder coating would be possible.

Cylinder Head Preparation - Part III (final)

2008-06-14T14:35:00.004+02:00

The engine finally is reassembled and the new cylinder head on top. You can see the intake prolongation parts (+40 mm) between the Webers and the head. Because of these the air filter is very near to the left fender. I had to move the MSD 6 ignition box to the firewall (under the ignition coil).

I left my concept an fitted a different exhaust cam. It's a Heimbach 30A cam (278° duration, 10,0 mm lift, 0,30 mm valve clearance).

Fuel Gauge Sender Repair

2008-06-14T14:17:00.004+02:00

Suddenly the needle of the original Jaeger "benzina" gauge got stuck. It was not an electrical problem as I though on a first glance but the potentiometer strip inside the in-tank sender had reached the end of it's life. As a first aid I repaired the broken wire with a constantan resistor wire (see next photo).

Later I dismantled an old fuel level sender and made a repaired new one out of the two old parts. The potentiometer housing can be opened easily by bending three sheet metal clamps.

Now everything works fine again. It would be wishful to have some more damping at the needle. To achieve this the friction between the potentiometer pick-up axle and the sheet metal plate (electric ground) can be increased by fitting a small shim. The eight screws on the flange are M8 x 12.

Modified Tappets

2008-02-17T21:15:00.006+01:00

The valve clearence compensation problem on the intake side is solved by modified tappets. The bottom of the right tappet is machined on a lathe down to 6.60 mm thickness instead of 7.30 mm. Alfa 105 tappets (left) usually only have 3.25 mm.

The new tuning tappet (right) has 42 g. This is a 3 g saving over the original Alfa 105 tappet. Now valve clearing compensation with Alfa shims which are available from 1.50 to 3.50 mm thickness is possible in combination with reground camshafts. A good adress to find these tappets ist histo:tec in Germany or tuning shops supplying Volkwagen/Audi parts. So called "mechanical tappets" are available for VW Golf GTI or Audi 20V engines to replace the hydraulic ones to achieve higher revs. They must have a diameter of nearly 35 mm.

Valve-clearance Compensation

2008-01-10T08:56:00.002+01:00

NACHTRAG:
DIESE ÄNDERUNG DER STÖßELBECHER WURDE SO NICHT VERBAUT. DER ALFA HAT NORMALE SERIENTEILE.

The new cam with smaller base circle requires a different valve clearence compensation at least on the intake side. The exhaust valves I use have 1 mm longer stems. Here adjusting the correct lash (0.45 mm) with normal Alfa shims is no problem.

J. Kartalamakis recommends to use regrounded Volkswagen Golf Shims (see next photo) or special custom made steel shims. Higher shims than 3.50 mm are reported to be available at Gozzoli in Italy .
In my special case I would need modified shims from 4.85 mm to 5.35 mm thickness.
My solution to that problem are modified tappets with a thicker bottom, see post above.

Intake Manifold Prolongation

2007-11-11T16:46:00.001+01:00

Here you you can see the aluminum parts from histo:tec I use to prolong the intake manifold. This is a length of 40 mm. Parts are also available in 25 mm length. A longer intake manifold will produce more torque at a lower rpm range. This is to compensate toque loss below 3500 1/min due to the hot camshaft.
O-rings on both sides seal against the manifold and the Webers. The diameter is 40 mm (45 mm parts are available, too). Please check the necessary room in the engine compartment especially at Bertone GT cars with original air filter box. The carburetor support link and the throttle linkage must be prolonged, too.

High Lift Camshafts

2007-11-08T20:26:00.001+01:00

Finally my new camshafts arrived from regrinding. CAMPRO did a good job to get the best benefit from the old Alfa 105480320051 cams. The new grinded base circle is 25,3 mm and they realized a maximum lift of 10,7 mm from the given cam profile.

Furthermore they did nitrating, straightening and polished the slide bearing areas. Clearance between the lobes and the head is ok.

Camshaft Profile

2007-10-04T13:22:00.000+02:00

To get an improved 1600cc engine for street driving an adequate camschaft profile is necessary. I've chosen a pair of cams which is quite similar to the Alfa Grp. 1 cam part no. 115010320032. From different sources (original Alfa cam data, IAP, Kent Cams, Schleicher, J. Kartalamakis, Alfa Bulletin Board, Colombo & Bariani, etc.) I have chosen a cam with these data:

- max. lift 10,97 mm
- duration 286 deg @ 0,35 mm clearance
- 243 deg @ 0.05" clearance (for those who are Americans)
- 248 deg @ 1,0 mm clearance
- timing: 110 deg lobe center (on both inlet and outlet cam)
- max. valve opening overlap @ TDC 2,5 mm

To improve the profile I calculated the lobe geometry according to Benzingers Formula using smooth intersections between triangular mathematical spline formulas. These cams are regrinded from original Alfa 105480320051 camshafts by CAMPRO, Bochum/Germany. See http://www.campro-technologie.de.

Valve lift (black), speed (reed) and acceleration (blue)

Valve lift curve, calculated curve (blue), Grp. 1cam (magenta)

Valve timing chart (0 deg = TDC)

Cylinder Head Preparation - Part II

2007-07-22T19:49:00.000+02:00

This is a view through the inlet port on the open intake valve before porting an polishing the inlet port. At 1600cc engines the valve guides are not much penetrating into the port. They needn't to be shortened nor machined.
The head is milled to a total heigt of 111.2 mm. As a consequence the diameter of the in-head combustion chamber is only 77 mm. It is 1 mm smaller compared to the engine bore of 78 mm. To avoid collision with the piston a chamfer is often recommended when milling the 1600cc head to achive high compression ratios. I measured the volume of the in-head combustion chambers to 63 cm³ each.

These are the new parts of the valve spring mechanism. You can see the inlet valve (bottom), the sodium filled exhaust valve, spring seat, shim, inner and outer valve spring, spring retainer and two valve keys.
As you can see, the valve keys at the outlet valve are different from the original Alfa inlet valve. They have three "rings" instead of one. I sourced them directly from TRW Automotive GmbH, Hauptstraße 10, D-31699 Beckedorf (TRW No. K8A090M0).

In addition to that there are a set of new valve guides, valve gaskets and valve seats with a three angle valve job (15/30/60 deg). To be continued ...

Air filter housing

2007-07-14T15:14:00.001+02:00

I modified the intake system and put a new fine glossy black paint on the air box. All boreholes inside were enlarged to 14 mm diameter and a new K&N-Filter with lower air flow resistance is used.

The tube to the cylinder head cover is not mounted due to an oil catch tank on the exhaust side of the engine.

2nd @ Oldtimerausfahrt Bietigheim

2007-07-12T08:28:00.000+02:00

I got another cup at SG Bietigheims weekend on Sunday 8th July 2007. I finished 2nd of 13 participants in the group 1971 - 1987. A late Ford Escort XR 3i was first - damned second-hand car.

Cylinder Head Preparation - Part I

2007-07-11T16:28:00.002+02:00

I just started preparing my 1600 cc cylinder head. Stage one tuning consists of cleaning the head, milling -1 mm to increase compression ratio, 3-angle valve job (15/30/60 deg) and porting all air passages. New parts are

intake and exhaust valve guides
new valves, exhaust valves sodium filled
new higher lift performance camshaft (286 deg, 11 mm lift)
prologation of the intake port system

I gave the head to Theilacker machine shop. The work is done on this milling maschine. My Alfa head of course is much smaller than this Maybach head on the bench.

Theilacker has a long tradition as a maschine shop for large gasoline (Deutz) engines. In the early days they had a mobile replacement parts service for MWM engines. MWM is Motorenwerke Mannheim. They supplied for example farm tractor maufacturer like Fendt or Eicher.

Compression measurement

2007-06-17T16:02:00.001+02:00

Recently I found this compression value sheet from 2001. The compression of each cylinder is between 12.75 and 13 bar measured with a MotorMeter gauge.

Road wheel power

2007-06-11T13:34:00.000+02:00

The G-Tech measures horsepower though the formula:

vehicle speed * acceleration * weight of the vehicle = power at the wheels

The more accurate the vehicle weight is entered, the better the measurement will be. I asked the people from a local grain mill to use their scales and got 1145 kg with driver. The G-Tech deliveres rear wheel horsepower. This horsepower includes the loss of power through the drivetrain which is approximately 15%. Rear wheel horsepower is what most people are interested in because that is what they experience when driving. The use of flywheel horsepower measurement is often used in advertising, but not very realistic when it comes to accelerating the vehicle.

For more information about the G-Tech RR device see here: G-Tech-Home

A run consists of a straight on acceleration from stand-still to maximum rpm in second gear.

This is the result of an actual measurement after some work with MS Excel. The red line is the calculated torque at the driven wheels, derived from acceleration and weight.
The blue line is calculated wheel horsepower. The 1600cc DOHC engine with some modifications produces about 90 hp at the rear wheels. This means approximatily 108 hp at the flywheel.

There may be some uncertainties in this result because this is only one measurement. I have to make several measurements and then calculate mean values. This story will go on ...

Bicycle Speedometer

2007-06-09T18:23:00.000+02:00

To get an information about average or maximum speed I included a digital speedometer Sigma BC 1200. For calibration it is necessary to input the exact wheel circumference which is also called wheel size factor. It can be measured on the car or it can be determined by the help of this table:

The sensor I use is a wheel sensor with magnet glued on the inner side of the rim. If a cardan-drive shaft sensor is used, the wheel circumference must be multiplied by 0.2195 to get the wheel size factor.

I calibrated the speedo with a GPS based navigation system. The correct wheel size factor for 195/60 R 15 tires is 1882 mm.

Digital instruments unfortunately are not always allowed in historic rallying and this particular one has not backlight function.

Alfa DOHC 1600cc engine at it's time

2007-06-08T23:01:00.001+02:00

Engine power of the Alfa DOHC engine was not so bad - compared to other cars and makes at the beginning of the 1970s. The 1600cc double Weber carbureted engine was at the top of the line. Only fuel injected 4 cylinder engines offered slightly more power.

Engines with 1600 cm³ capacity (single carb., double carb. and fuel injection)

Front suspension

2007-06-08T17:35:00.000+02:00

There are not much things to make better at the front suspension of an road going Alfa:

Bilstein shocks
Superflex Poly bushing between trailing arm and upper lateral arm
Lemfoerder forged upper lateral link (# 032.311.003.501) with reinforced inner bushing (taken from lower A-arm)

Values for suspension alignment:

Toe-in: 0° 14' (positve toe-in, 3 mm distance between rims)
Camber: 0° 20' +/- 30'
Max. camber difference between left and right wheel: 0° 40'
Caster angle: 1° 30' +/- 30'
Max. caster angle difference between left and right wheel: 0° 20'
King-pin inclination: 8° 35'

Brake conversion

2007-06-08T16:33:00.002+02:00

To upgrade and lighten the front brakes I've chosen a pair of Brembo 2-piston fixed calipers from the Alfa 75 1.8 turbo (1779 cm³, 110 kW) which was in production from Sept. 1986 until Feb. 1992. The calipers use exactly the same 48 mm piston diameter, so that the brake force distribution remains equal. But the area of the pads increased from 140 mm² to 201 mm². This should be ok to prevent excessive wear and fading.

A pair of new brake lines (intermediate tubes) had to be manufactured. M10x1 nut thead thread fits the brake hose (steel hose type, see below) and M10x1 screw thread is used for the saddle thread. The brake force diagramm of the GT junior shows that there is not so much difference between the original brake layout and the Brembo/Alfa 75 design.

Calculated brake force diagramm

New steel-flex brake lines from Dickhaut-Specials were used, too. Remember that the Brembo caliper has M10 x 1. The line length is 38 cm at the front and 40 cm at the rear.

Brake assembly in the car

The calipers are made for wider vented brake discs. so I had to open the caliper and remove two spacers - thats all. Brake disk is Brembo, too, matching the GT 1300/1600 (diameter 267 mm). It would be possible to use vented discs. If you like, have a look at the Alfa Montreal disk or at Audi 90 GTE discs. The brake force according to the german TÜV measurement is 220 daN per wheel.

Alfa GT 1300 junior original Specs

2007-06-06T14:21:00.000+02:00

Production Years	1966-1977, earlier model from 1966 on with step-front, from 1971 flush front, later model GT junior 1.6
Chassis #	105.30. LHD and 105.31. RHD
Number and layout of cylinders	4 in-line
Bore and stroke	74 X 75 mm
Displacement	1290 cc
Compression ratio	9:1
Horse Power	90 hp DIN, 103 hp SAE at 6000 rpm
Maximum torque	14 mkg DIN at 3200 rpm
Fuel supply	double Weber 40 DCOE 28 horizontal twin-choke carburetors
Fuel tank capacity	46 litres (reserve 7 litres)
Coolant capacity	7.5 litres
Oil Capacity	6.5 kg
Gear ratios	3.304:1 I, 1.988:1 II, 1.355:1 III, 1:1 IV, 0.860:1 V, 3.01:1 in reverse
Final drive ratio	9/41 = 4.555:1
Wheelbase	2350 mm
Track	front 1320 mm rear 1270 mm
Length	4080 mm
Width	1580 mm
Height	1310 mm
Minimum ground clearance	120 mm
Tires	155 SR 15 or 165 SR 14
Brakes	four-wheel discs, ATE-servo ATE 1-piston fixed caliper, drum in hat hand brake (rear)
Steering	Burman recirculating ball
Turning circle	10.5 m
Electrical system	12 volts, 300 W
Battery	45 Ah
Weight	kerb 1020 kg, loaded 1360 kg, measured weight 1145 kg (with driver & fuel)
Acceleration	0-100 kilometers 12,1 secs

Hanhart Digital Triple Timer

2007-06-03T19:41:00.001+02:00

I replaced my old TRF Triple Timer with this Rallye approved digital Hanhart precision instrument. Less number of buttons means more easy to use!

I wounder how long the tiny LR44 batteries will hold the needed voltage. AAA type batteries certainly would be better. Let' see ...

Tripmaster Retrotrip 2

2007-06-02T21:53:00.001+02:00

When participating in historic rallying you will need a Tripmaster. Because of the high cost of NOS Halda Tripmasters I preferred the new Brantz Retrotrip 2 from England. It has a speedometer cable sensor and two mechanical counters which can be reset to zero.

Here you can see the gauge mounted on the dashbord next to a DCF77 clock, a mechanical stop watch and a digital triple timer. The home made "Rallye Board" is illuminated and has further conectors for the GTech measurement device and a 12V outlet.

New "old style" 15" alloy wheels

2007-06-02T21:41:00.001+02:00

It's not easy to find a set of 15" alloy wheels fitting the Alfa 108 mm bolt-hole circle. European Ford Mondeos or some Peugeot cars have an equivalent spec. These are German manufactured R.O.D. Leichtmetallräder GmbH - Rondell 26 6.5 x 15" wheels on the GT junior. The wheel offset is 25 mm (ET). Tires are 195/60 R15 Bridgestone RE720.

I use 10 mm spacers at the rear axle on each side to trim the vehicle to neutral steering.

Battery in the trunk

2007-06-02T21:34:00.000+02:00

The battery moved into the trunk to achieve a better weight distribution. I removed the spare wheel and added a bottle of Tire-Fit. On top of the battery box cover you can see an Anderson connector to connect an external power supply or 12V charger. This kind of plastic box is usually used as a battery box for boats.

CSC Sports Exhaust

2007-05-24T16:31:00.001+02:00

It wasn't easy to find the right exhaust system for my 1600 cc Alfa 105 engine. I prefered the CSC Marmitte steel sport exhaust system from Italy. It fitted exactly to my engine. Here you can see the 4 in 2 manifold. I'd better sprayed it with VHT Manifold Colour from KTS American Parts. What's your experiance with that? Does it really withstand 820°C? The first silencer is competely replaced by a flexibel joint.

The sound is very exciting but not too loud. Increase in performance? - Dont't ask!
I purchased it from Stefan Götzelmann Vintage Alfa Romeo Cars. Nice work!

Stock 1972 GT junior

2007-05-23T11:56:00.001+02:00

After driving from 1972 to 1987 in Cagliari, Sardinia, this GT junior came to Germany (Dec. 1st, 1987) and was partially restored. The former owner decided to paint it Ferrari Red Code L300 in 1991.

Alfa GT junior like it looked in June 2003

Later between 1996 and 1998 the engine and gearbox has been dismantled and built up like new. The car was re-immatriculated in Germany on July 30th, 1998. From June 26th, 2003 I continously work on improvements of the car.

GTV 2000 Seats

2007-05-23T11:41:00.000+02:00

NOS sets from the later GTV 2000 with contemporary head restraints offer a minimum of safety.
Seat consoles must be adapted to the car by two pairs of sheet metal (ST-37 steel). Geometry differs from vehicle to vehicle. A drawing example see here:

How would a pair of red Schroth ASM autocontrol II safety belts would look like?

Alf a GT junior with late GTV style front seats

6 x 14" ATS Wheels

2007-05-23T11:12:00.001+02:00

This is not a success story. Recently I got a set of pretty good looking 6 x 14" ATS wheels for the Alfa 108 mm bolt-hole circle. The wheel offset was ET 38 mm - corresponding to the original Alfa 105 size. 10 mm spacers at the front and 30 mm (!) spacers each side at the rear were no problem.

Tyres were Continental Sport Contact 185/70 R14. These wheels gave the GT junior a distinctive "German Look" of the early seventies. Unfortunately these tires offered a very good ride comfort but no sporty driving properties.

The wheels had a lateral and radial run-out of more than 2 mm. This lead to tremendous vibrations at speeds between 80 an 120 km/h. As a result I graded up to 15" wheels or use the standard 14" steel wheels with inox Alfa hub caps.

MSD Ignition

2007-05-23T10:31:00.000+02:00

The MSD 6 Series Ignitions feature a capacitive discharge ignition design. The Alfa stock ignition is an inductive ignition. In an inductive ignition, the coil must store and step up the voltage to maximum strength in between each firing. At higher rpm, since there is less time to charge the coil to full capacity, the voltage falls short of reaching maximum energy which results in a loss of power or top end miss.
The MSD Ignition features a capacitor which is quickly charged (within one millisecond) with 460 - 480 volts and stores it until the ignition is triggered. With the CD design, the voltage sent to the coil is always at full power even at high rpm.

The MSD 6 Series produces multiple sparks for each firing of a plug. The number of multiple sparks that occur decreases as rpm increases, however the spark series always lasts for 20° of crankshaft rotation. Above 3,000 rpm there is simply not enough "time" to fire the spark plug more than once, so there is only one powerful spark.

My MSD 6 is triggered by points. I use the BOSCH distributor # 0 231 110 044 JF4 which has a two stage advance curve with a steep advance gradient below 2000 rpm. Starting o fthe engine has improved very much when using new NGK BP6E plugs instead of Golden Lodges. The MSD control unit is mounted next to the air filter housing.

Cylinder Head Cover

2007-05-23T08:46:00.000+02:00

Show and shine again: Polished cylinder head cover replaced the old dull aluminum cover.
Have a look at the aluminum oil catch tank next to the battery improved in appearance with a K&N filter. BTW: There has never been oil in it, so what.

Red silicone ignition cables are a MUST on 105 Alfa engines. :-)

Historic Rallying

2007-05-23T08:33:00.000+02:00

This is the result of 2005 and 2006 participation in historic rallying.

3rd place @ MSC Herrenberg "Gäu-Veteranen-Rallye" 2005 (vehicles from 1969 to 1972)

3 Alfas were leading in Mercedes county!

2nd @ MSC Weil der Stadt Rallye 2006

Lamp Covers and Steering Wheel

2007-05-20T20:52:00.003+02:00

Rallye look of the old days. I just sewed a pair of protector caps for my 160 mm BOSCH high beams. Special thanks to Boris for the checkered genuine leather he used for the VW bug bra.

And this is the original interior of the Alfa GT 1300 junior (step front) -
the two spoke steering wheel looks a little bit simple and dreary.

My latest mod: Wooden Hellebore flat steering wheel. If you need help to get such a bright, shining surface I recommend Claudio Tescari from Classic Car Parts in Cologne, Germany.

Steering wheel inside GT junior

Scuderia Non Originale (TM)

Scuderia Non Originale is a trademark of Gary Williams, Washougal, Washington, USA. Used by permission."

In 2005 I joined as "Director of the German branch".

Gary williams explains it like this:
"SNO was founded by a group of Alfisti in October of 2004, at the annual Concorso Italiano in Monterey, CA. The charter members live in the San Francisco Bay Area, mostly in the region south of San Francisco widely known as Silicon Valley. They include three engineers (Tom Sahines, Richard Lane and Ben Lamprecht), an auto parts manager and former Alfa mechanic (Steve Smith), a former Yahoo web wizard who now works for the government (Ted Williams), and former business owner turned lay-about (Gary Williams).
Cars include several GTV's & GTA's, an assortment of Giuliettas, a Junior Zagato, a Giulietta Spider race car, a Milano Verde, a stunning Turbo Alfetta GTV, and an ever growing list of other Alfas, Panteras, Ferraris, Maseratis, and other Italian makes."

There are only two requirements to belong to this group:
(1) You must be more enamored with Italian cars than is emotionally or financially healthy, and
(2) You must not be offended by fellow enthusiasts who change the wheels on their cars, modify mechanical systems, or make other changes, such as painting their cars non-stock colors.

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To Become a Member

1. Reread rules 1 & 2 listed above. By joining SNO, you are acknowledging that you will pay NO dues, attend NO meetings, and will refrain from mocking non-originale Alfas and other Italian sporting machines ... at least not openly.

2. Send an e-mail to : SNO at greend dot com.

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