if youve got a 4.1 diff doing 100mph what will a 3.54 do at same revs

116mph

116mph.
100 * (4.1/3.54)

Dammit - too slow!

[Edited on 20/4/10 by Madinventions]

^^^ LOL its not a race you know mate.................. BUT I WON!!!

ok need more how much would 14" rims over 13" rims give me with same profile tyres

What are they currently?? Depends on the width as the profile is a percentage of width. I assume you have an english axle?

205/60/13's would give you a little over 185/60/13's but i really wouldnt bother with 14's to be honest - not the greatest selection of tyres available

Andrew, I take it this is for your diesel locost project, in which case I'd go for a much lower ratio - I've got a diff from a BMW 330d which is (iirc) 2.88:1 (assuming of course that you are using a half decent diesel)

ATB

Simon

I have a 3.1 diff from 2.8 Capri atlas axle if interested.

Sorry to jump in, does anyone know if there is an easy way to tell what diff you have fitted? I have a mk2 escort live rear axle and other than rolling the chassis and counting how many prop rotations there are to one rear wheel rotation is there a simple tell? Cheers

quote:

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Originally posted by andrew
ok need more how much would 14" rims over 13" rims give me with same profile tyres

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