Can i do 70kph in first gear, or am i smoking crack again (car will be making around 200kw @ wheels)

72type3wrx Seriously Crusin Dubber

152 posts · joined Aug 2006 · 12 Feb 2008, 11:43 am

#632247

Hey guys i just worked out a nice set of gear ratios but am a bit worried about first gear, on the excel dyno program it doesnt change my ET much from my last arrangement but will put 2nd to 4th nice and close together. please give me your 2 cents.

1972 Type 3 Fast back, RS Turbo 2ltr, VF34/P20,
3" Exhaust, WAIC, Wolf 3D, Sard 540cc's, Swirl pot and VL Fuel pump, Apexi CAI, Custom VW 4spd with straight cut albins 3.87 R&P, stock brakes

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 12 Feb 2008, 12:23 pm

#632252

tall first will be always hard on the clutch for street driving...........?

what size clutch do you run?

will you be getting the most out of the subies power only dropping rpm to 5000?

72type3wrx Seriously Crusin Dubber

152 posts · joined Aug 2006 · 12 Feb 2008, 12:40 pm

#632256

215mm me thinks but clutches are cheap. and yer it did pull real hard from 3500 but that was with a little baby turbo, ill have a big turbo real soon.

1972 Type 3 Fast back, RS Turbo 2ltr, VF34/P20,
3" Exhaust, WAIC, Wolf 3D, Sard 540cc's, Swirl pot and VL Fuel pump, Apexi CAI, Custom VW 4spd with straight cut albins 3.87 R&P, stock brakes

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 12 Feb 2008, 3:43 pm

#632281

Yes that first gear is too tall, even with the 4.57 diff ratio.

The other thing to observe is that the gaps between each gear get larger as you up-shift.
You want these to get progressivley smaller.

EG:
3.333
2.077
1.3
0.82

westi wrote:That's mad Alan.