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Rear Seems To Hop On Hard Cornering

nuffsaid
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nuffsaid Veteran

nuffsaid

Posted
Posted

Hi all

I have a R34 GTT with the following suspension mods:

- tein super streets

- whiteline front (24mm) and rear sway (20mm) bar both on soft

- front and rear camber kits

- front castor kit

- aligned to SKs settings, pretty much everything is SK spec except coilovers and slightly smaller rear bar

Problem I am having is that when I take say a hard left corner, the rear seems to hop hop hop as if the rear passenger wheel is coming up and off and onto the road again. Its either that or the tyres are rolling on the side so much that Im getting that feeling. it is hard to explain but its like the rear of the car is hopping along to follow the cornering line.

The front seems fine to me and is well planted.

Any ideas what it could be? or what I should try to get rid of it? is it too much body roll?

Thanks

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Beer Baron Grand Master

Beer Baron

Posted
Posted

does the car actually kind of buck? called pig rooting? happens in slower, tighter corners. and it happens when you are getting on the power just before the apex?

nuffsaid Veteran

nuffsaid

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does the car actually kind of buck? called pig rooting? happens in slower, tighter corners. and it happens when you are getting on the power just before the apex?

Dont quite get what you mean by bucking BB? But im def. not getting on the power early

MrStabby Grand Master

MrStabby

Posted
Posted
like as in the car is behaving as though it was a mechanical bull. ie jerking up and down as you are cornering?

I get that, but only on the street. I know my rear springs are too hard, but is there another reason it happens?

SeanO Contributor

SeanO

Posted
Posted (edited)

I seemed to have that problem at one stage :) my cars left hand rear shock had gone simple bounce test later and a replacement found and its been all good so far

it bounced around on tight corners but also on long sweeping corners at speed :) however it may have no relevance as i have a 33 but still thats my 2 cents hope it helps :)

Edited by SeanO
nuffsaid Veteran

nuffsaid

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Were the Teins new?

You keep having weird problems with this car eh.

Are you slowing or accelerating through 80km/h during this corner?

Have you got a new bike yet?

Hahaha i dont really have any problems at all, i always think i do but its always fine in the end, i think its just my fussy self hahah

i think ive been pretty lucky to have everything go well with the car so far (knocks on wood)

teins are new, 1 year old, only done maybe 10 thousand km on them

its like a tight bend, im only doing maybe 50km/hr, maybe its just the nature of the bend, its one of those ones that get tighter as you get into it

naah still trying to sell the white cibby first, then onto a 600cc hopefully

stasis Mentor

stasis

Posted
Posted

i have exactly the same problem too. Theres a nasty winding road when i got to Bendigo its like a U turn on the middle of the hill and each time i turn it seems the tyres are slipping at the rears. Sort of felt like going into a dip and the car bounce back. I installed the tein read my signiture for specs.

Sydneykid Grand Master

Sydneykid

Posted
Posted

Sounds like, insufficient rebound damping in the shocks to control the spring wind up caused by the rear squat on acceleration. Typical of a poorly matched spring rate and shock valving.

If you have adjustable shocks, try winding them up towards full stiffness. It sometimes helps.

Cheers

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