Just a quick one, whats the reason y live axles spin easyer then irs? Cheers

what do you mean, spin easier?

I think he means breaking traction.

yer he would mean breaking traction the wheels dont spin different any other wise. its kinda hard to explain in text but because irs have driveshafts independant of the diff itself unlike live. the rear sqauts when you put power thru it. other reason would probly be live axel the wheels sit on the road with no camber so they are easier to spin as i think irs was designed for traction. someone else can explain it better im sure but hope u kinda understand

yeah i mean traction guys sorry bout that. thanks truozi that makes sence now, all ways wonded why an 220rwkw irs still has a hard time to spin the wheels where an 170rwkw live axle mini spool can do it with no problem at all. Thanks again.

Thats probaby a lot to do with the weight of the car aswell. Unless you have a irs diff and convert to live axle or vice versa, there really is no way to tell how much of a difference there is between the 2. A VP would be a good way to tell the difference as the BT1's have irs yet an executive doesnt and both would be similiar weights. But yeah the squat action of the irs does make a difference.

IRS pretty much speaks for itself, the car will tilt and stick to the road better with the axle pivoting in two places in a turn, I know a guy who has an ex government VS which was optioned with a live axle and there was a few people who ordered the live axle as they prefered it for a streeter.

Live axle is deffinately better for a racecar.

Quote: Originally Posted by XEC747 Live axle is deffinately better for a racecar. What sort of race car? IRS is a LOT better for circut racing, live rear is only good for straight lines

Quote: Originally Posted by NZ EVLHSV What sort of race car? IRS is a LOT better for circut racing, live rear is only good for straight lines So if this is the case, why do V8 supercars runs live?? No doubt there would be a lot of race cars that would run irs in os classes but this may be due to regulations? EDIT: brain fade did not allow me to think of F1, but is that because of weight saving? Slowly starts to retreat backwards Some original photos have not been recovered yet.

Don't confuse a V8 Supercar full floating rear end with watts linkage, adjustable camber and toe-in with the factory Commodore live rear mentioned in this thread

I know the differences between the V8 diffs and and the standard live axle in street commies. I used to build V8 supercar diffs, vastly different but still considered a live axle in regards to the general setup.

Maybe the reason for V8 Supercars using live rear comes back to the homologation rules? I can't see any other reason why they'd still use a live rear (other than cost maybe?) as just about every high end street car uses IRS (Ferrari, Lamborghini, Porsche etc) and also as you mentioned above so do F1 and probably most other top motorsport categories

Yeah I google just before. Live is still used because of homologation. It wouldn't be because of cost because the housings are worth $10 odd grand and I'm pretty sure it doesnt include the locker centre, axles, camber/toe blocks etc

The homologation needs updating, bring on 7L LSx motors and let them go nuts!

Nah leave it how it is. The cars are already overpowered as it is. You look at the power that BTCC make and are quite quick.

there is only 120kg diffrents between both cars we have weighed them. whats the best way to stop it bogging down? axle ramp i think thats whats it called?

120kg makes a big difference. Best way to get a heavy car going better is go for shorter diff gears. What model are we talking about? Sounds like a VS Stato??

NZ EVLHSV. its a VQ statesman. itds got 3.9s in the car now the statesman is quicker then the VN but the VN spins the wheels so much easyer and has 50RWKW less. I like to make the stato spin easyer just to show my mates it can do a burnout easy if i want it to. any idea's?? any one??

you shouldnt have any dramas in trying to spin 5.0L VQ irs with 3.9's....? is it a 3.8? get 4.11's but it shouldnt make a difference! clamp the a.b.s off the back, pump the rears right and should be right! other than that you need to spend money and if its a 5.0 and it wont do a burnout just sell it! as i sed v6 irs cars ark it up.