YOREVOL

as title really, ive got a mint 4i and i cant sell it. ive also got a xr4x4 with a boa that is a bit rotten. i like the 4x4 fairly quick but i wonder if its too much work to fit the boa into the 4i. ive got all the 2wd running gear almost, just pedal box and adj tca's to buy.

Fil

All good, I'd say, made a 24v xr4x4 myself, was quick and reliable, as that's quite a decent, reliable and cheep engine.

Can fit all the rear set up to the 4i too, so discs and LSD.

robrs2

Had mine for about 7 years now and its fun. Running a BOB now though

cossie4i+

iTrader: (15)

I enjoyed my 4i with the 24v.

As said use the 4x4 rear set up so you have a lsd and discs.

Not the fastest but very driveable.

Steve

YOREVOL

ive got mainly cos 2wd running gear. 3dr front hubs, big discs and brembos,comp struts and adj tca's. i have a 7.5 rear beam and diff and thinking about adjustable rear beam. i really wanted to know if its worth doing or do i save and buy a saph cos? had one before but got fed up of fixing it.

tonyRS

I say if you have everything do it! But if you go to expense of buying adjustable rear beam etc. the build price will go up and then it's an expensive car, but looking at the parts you have I'd just throw them on and have a nice fun car that hasn't cost the earth

dojj

iTrader: (3)

It's fit and forget 200 brake and it makes a remarkably quick motor

Just get the suspension right as the v6 weighs a fair bit

YOREVOL

ive got about £1500 in parts inc engine so another grand or so for a beam wont make it a very expensive car.
any recomended spring rates?

dojj

iTrader: (3)

try with the springs as they had about 18 different springs listed for the sierra as the v6 doesn't weigh as much as the 4x4 v6 and then you had air con and left and right hand drive configurations

the ride was the same height but obviously if you have more weight the spring rates are higher to compensate for the original weight, so if you bolt in some cossie springs with the same rate, they drop the suspension by 2 inches because you have more base weight on them

i found that koni had them spot on years ago so maybe a good point to start

YOREVOL

thanks dojj, i was looking for spring rates as ive got coilovers.

dojj

iTrader: (3)

from memory they were between 5 and 15% more than the cosworth springs is you were using normal suspension if that help

dojj

iTrader: (3)

also, retain the standard 2.9 flywheel but lighten it, it makes a world of difference to lose a few kgs from that to the spin up speed and you don't lose any noticable driveability or torque