Gearbox build-forest rallying. FD & Ratios

[angusl2006]

Was wondering if anyone could share with me what final drive they use on there car.

engine is a x14xe with an f13 box, got a group A LSD however i cant afford a straight cut system just now.

Is there anything i can do to change the gear ratios to suit the forests better?

Any comments appeciated!

[tom reid]

What revs ar you able to use?
A good cwp is 4.53 , this suits higher revving engines, the 4.3 or 4.18 would be fine for 71/2 k revs.

[mowgli]

as its forest, and braking grip is limited, you can get away with 236mm brakes & thus 13" wheels, this, with low profile tyres will lower the gearing too.

[phunkynova]

As the wise old men above have said, if you have not got a CR box out of a GTE/GSI and some other models it will help a bit.

[angusl2006]

dunno what engine will rev to, getting a mbe system that is mappable off bill falconer. i would need to look into this further. i have the cr box out of the GSI.

how many notches does the 4.3 and 4.18 have and what boxes are these in?

Thanks

[garyc]

no notches on 4.18, found in 1.3sr's and prob others too. I have a 4.1 for sale, PM me if your interested.

4.29's are in some combo vans iirc.

[Stuart]

from the sound of the engine build, its not going to be revving much over 7.5K anyway, so the CR 4.29 cluster from a corsa D would be ideal :)

[angusl2006]

Garyc, sent you a pm!