Transmission ratios

[Andy Sykes]

Hi guys, my transmission is about to be started on and being as my engine hasn't been dynoed yet I don't have any real idea where the power will be, but speaking to others and looking into it it looks like it's going to be 5-5500 rpm so two fixed things I have at the moment are 26 inch tyres and 3.88 R&P



This one I think is ok till maybe 3rd and it's dropping to 5.2k so maybe just off boost



This one a little better as it's 5.7k so should be well on boost at this point.

any thoughts or changes you guys can offer before I give in the ratios

Cheers Andy

[Bruce]

......... my engine hasn't been dynoed yet  ..............

30 bhp?  Stock 1600?
Nobody can give any valid opinion until at least some estimate of hp is made.

[Andy Sykes]

Engine power wise should be plenty 2900 cc pauter turbo


26" tyre
3.88 FD
change at 8k

Gear          RPM      MPH

1st 2.75       0        58
2nd 1.88    5500     85
3rd 1.44     6000    114
4th 1.05     6000    152
Maybe
5th 0.77     5900    207

engine should be on boost by 5500 rpm