The Engine/tranny Page
For the swap see page 8
PAGE 8- THE SWAP PAGE ****(NEW)******
There were Almost 10 variations of the 16 Valve engine that VW put in their cars (Forgive me if i forget one! or let me know)
1.4- Euro Spec- Code unknown- 112hp@?(Polo 16v)
1.8-US Spec PL- 123 hp@5800 Rpm (Sciroco 16V,Golf II,III, jetta)
1.8-Euro spec PL(Early series)- 128 hp@ 5800rpm(Sciroco 16V,Golf II, jetta)
1.8-Euro spec PL(late series)- 134 hp@ 5800rpm (Golf II,Corrado 16V, jetta)
1.8-Euro Spec KR- 139hp @ 5800rpm(Golf II,III,Corrado 16V, jetta)
1.8- Euro Spec limited Turbo- ????? (Golf II)
2.0- US Spec 9A- 138hp @ 5200rpm (Passat, Golf III)
2.0- Euro Spec 9A-150hp @ 5200rpm (Passat, Golf III)
2.0- Euro Spec 9A-160hp @ 5200rpm (Passat)
Lets focus on the 1.8 KR- the engine going into the car-
The major differences for engine from the other 1.8's-
- it was the most powerful Normally aspirated 1.8 of the bunch with 139 hp
- 50 mm intake runners
- larger throttle body with moderate and full throttle
- more aggressive cam profiles
- more torque
- 1781cc 82.5 bore and 86.4 stroke
-1991 8 Valve Gti tranny
- 020 AUG
- First- 3.45
- Third- 1.44
- Fifth- 0.89
- Final- 3.67
VW motorsports trannys-close ratio(closer gear ratios for smoother transition, fantastic but not quite as logical for a high power to weight ratio car)
- First- 2.72
- Third- 1.68
- Fifth- 1.26
- these are the final drives for the 16 valve gti trannys- 3.32, 4.20, 4.46, 4.64, 4.81, 5.07
- what comes in what? dunno? you actually have to take the Ring and pinion gears out and count the teeth-good luck
-VW rabbits/golfs A-1's mk1's have 90 mm transmission input shafts the tranny I have has 100 mm input shafts
- I was also p-o'd to find out that i grabbed the wrong tranny. This is a AUG from a Golf GTI 8v II, it will still work on the engine thow. All 020 VW tranny's are compatible with this swap just be careful to understand that some flywheels are different sizes. I just lucked out because the tranny I picked up works with my flywheel.
-Furthermore the Tranny code is on the bottom of the casing and not inside, don't be fooled the #'s that follow the lettering system are the date the tranny was manufacted in my case the tranny was built on Nov 30, 1990 Example: 30-Day 11-Month 0- Year not 2000 but 1990 dang it! at least it is a Gti tranny.
- I was however looking at the gear ratios and the tranny i picked up is probably better for the car seeing how the power to weight is really good. The AUG tranny has gear ratios better for grandma which is better.
- Gears 101 1/2- It takes less power to move a car with less weight. A low gear ratio (Granny geared) takes A (force) to move B (weight). The lack of B (weight) will cause the low ratio (granny) to pull with more speed when the same A (force) is added. With a high 3 final drive versus a low to mid 4 final drive the car will theretically go faster and have a higher top speed than with a VW motorsport tranny.
- Yeah, I thought about it a little while to justify my stupidity for buying the wrong tranny. But i think its better this way. It will hopefully alleviate a little wheel spin, give me more top end, and have a set of useable 1-3 gears.
- I am almost positive that the first 2 gears in the Golf GTI III's are almost completely unusable, although the tranny has closer ratios to aid in shifting, it appears that the gears run out real quick ( maybe not to noticeable for the weight of the III's, remember 101 1/2)but in a Mk 1 those ratios are ridiculous-nothing but accelaration. All the way up to 5th
- I recently picked up a used set of 100mm axles, i hope they fit, the driver side came out of a VW golf II and the passenger side from a G60 Passat(man i wish they still had that car/engine still at the yard.
- after comparing the axles side by side it seemed that VW interchangeability was up 100 percent, almost all the axles I compared from any vehicle from VW's 1st and 2nd series were the same length and had the same outer flange diameter length and # of teeth. Even the set of 1st series GTi axles found. Meaning almost any series I and II axles should be interchangeable (golf,jetta,passat,polo. I will say the only diffences noted were the series III axkes which were all slightly longer (wider wheel bases). Others would include shaft thickness, the ones with 90mm flanges were slightly thinner than the 100mm flanged ones. The passat axles shafts were also slightly thicker than the golf/jetta, 8 valves at 100mm. THE 100mm inner flanged vs the 90 mm inner flange is the only difference that i could see.
I also picked up a Gear shifter from a 1997 vw polo, the entire assembly, the 1997 polo still had a cable shift tranny and the shift unit is neatly housed in a box that should be a bolt in/more to come on that one. may end up drilling hole dunno.
PAGE 1- Introduction to the madness
PAGE 2- Vehicle structural preperation and interor prep
PAGE 3- Vehicle Suspension and braking preperation
PAGE 4- The Transmission Page
PAGE 6- PAGE 6- The tuning involved...Mega Squirt page
PAGE 7- Various other golfs, pictures and links.
PAGE 8- The Swap Page.
PAGE 9- The 16V Page and ABF Teardown.