Torque steer or bump steer

I guys, I need a bit of help with serious help with either bump steer or tourque steer issues with my DC5.
I have a DC5 Luxury which has received a worked k24 w/ Type R transmission transplant and for suspension has a Tein Monoflex. The problem is on agressive acceleration or gear down, the car swerves quite considerable to the right.
I have consulted two wheel alignment places and are unable to rectify the problem. I have already installed T1R reverse tie rod ends with slight improvements.
Has anyone had the same issues?
Can anyone recommend a solution?
There is a Spoon Anti Bump Steer Kit, has anyone used this kit? Is this a guaranteed solution to my issues?
Lots of questions i know, but would sincerely appreciate some input.

Have you checked your engine mounts? might have one thats not doing its job

More info about the car please.

- What kinda of tyres/wheels are you running (Sizes of rims and tyres)
- What kind of engine mounts.
- Are the Monoflex the only suspension mods you have.
- Worked K24... can you go into a little more info... If you have some serious hardware the torque steer might just be a "side effect".
- Type R drivetrain would mean your running an LSD no... stock LSD?

Thanks

FYI bump steer is relevant to road conditions (that is , the bumps , divots camber of the road) not engine / drivetrain or user input.
You are getting torque steer quite clearly !

nothing worng with engine mounts

I have a set of 18" Work XD9's on Toyo R1R 225 x 40 on Tein Mono Flex, no other suspension mods.
K24 engine with the following mods:
Carrillo Pro H Rods
CP Pistons 87.5 12.5:1
Ported and polished head
Skunk2 Pro Spec 3 cams
Buddy Club Titanium retainers and dual valve springs
S2000 Valves
Type R Gearbox with LSD
AEM ECU
Custom Alloy Air Box
Toda manifold and exhaust
165KW ATW
I have a standard DC5 Luxury LCA's and im thinking it might be the cause and i might need to upgrade to a Type R unit. Are there much differences between the two?
Also, the tie rods are slightly elevated towards the coilover end. Dont these have to be horizontally dead straight?
Thanks for the input guys!

anyone?

I forgot to montion other suspension upgrades:

Tein front and rear struts
Tanabe front and rear underbrace

Somebody shed some light please.

its torque steer.

Bump steer is when your suspension bottoms out causing you to lose control.

I had massive torque steer probs on my dc5. So bad that, that under WOT and changing gears, the car would nearly change lanes by itself. It was kind of hard to drive actually.

I got some roll center adjusters and caster plates, and now there is minimal torque steer

Quote:

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Originally Posted by its_ish

Also, the tie rods are slightly elevated towards the coilover end. Dont these have to be horizontally dead straight?
Thanks for the input guys!

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I think the tie rod angle is supposed to be at right angles to the shock. So basically, the more camber you have the more angle you want.

Check your alignment settings first. If you have not done it since the transplant or installed the monoflex, do it now!

High torque through front wheels + LSD + shorter driveshaft on the left side = torque steer turning the car to the right. But all the car does is pull to the right. It is not meant to swerve to the right. If yours swerves, something is not right. So get over to a tyre shop for a laser alignment. If you have adjustable camber kits, let them know as well.

Hey Ross, ive looked at the roll centre adjuster but wasnt sure if this will eliminate the issue. Thanks for the input! Will look at the J's racing unit...

Ive had two wheel alignments since the transplant.
The wheel alignment places just scratch their heads and dont know how to rectify the situation. Which wheel alignment place can you recommend?

does it go back to the left if you brake?
or does it just go to the right and when u stop accelerating it goes straight but still angled towards the direction it pulled you

Quote:

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Originally Posted by its_ish

Ive had two wheel alignments since the transplant.
The wheel alignment places just scratch their heads and dont know how to rectify the situation. Which wheel alignment place can you recommend?

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I only go to eastcoast suspension. Its on the southside.
Heasmans and Eastcoast are the only places that I would take my car to.

Hey Yamikaze, it corrects itself and goes straight when you ease of the pedal.

wheres eastcoast suspesion?
Im in Sydney...

im sure its probably correct if you've taken it in for wheel alignments and checked it over but check that you dont have a directional tyre reversed. My friend had a 4g63 fwd lancer and for whatever reason one of the front tyres which was directional was reversed. It was at the point where it was dangerous as it would do what your saying, wonder around under power and braking but especially on gear changes, was hard to keep in one lane.

Quote:

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Originally Posted by its_ish

wheres eastcoast suspesion?
Im in Sydney...

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They are in kirawee on the southside of sydney.

Has this only happened recently or has always been there? I'm just wondering if your problem only started to occur when you put the coils in or after you put the bars in etc.

I had a similar problem as you, except it steered to the left slightly under acceleration. When just cruising it runs dead straight. The shock was loose in the shock housing (about 1 degree of play) so the bolts just needed to be tightened up so there was no play in the shock.

Maybe check all the bolts in the shocks are all nice and tight.

toe out at the front? or front sway loose?

Get a tape measure and check the circumferance of both front tyres. If one is "taller" than the other this will cause the problem . "Tyre stagger " is good :thumbsup:in some forms of speedway racing where you constantly turn in one direction but a disaster :thumbdwn:on a road car. I used to race karts (with chain drive and no differential) and it was a very common issue.
Steve

Quote:

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Originally Posted by autocross civic EG 6

Get a tape measure and check the circumferance of both front tyres. If one is "taller" than the other this will cause the problem . "Tyre stagger " is good :thumbsup:in some forms of speedway racing where you constantly turn in one direction but a disaster :thumbdwn:on a road car. I used to race karts (with chain drive and no differential) and it was a very common issue.
Steve

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fantastic input that no one has suggested.

I also suggest , variable stagger is found with running different PSI in each tyre. This can have the same effect described above. Check your tyre pressure !

Actually with karts we used to grossly overinflate the smaller tyre to "stretch" it up to the required size (then lowered the pressure). I initially avoided making that suggestion here in case somone overdid it and caused the tyre to let go with the potential for serious injury.
Steve

Quote:

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Originally Posted by autocross civic EG 6

Actually with karts we used to grossly overinflate the smaller tyre to "stretch" it up to the required size (then lowered the pressure). I initially avoided making that suggestion here in case somone overdid it and caused the tyre to let go with the potential for serious injury.
Steve

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yeah....i more so suggested that He maybe running proper PSI in one tyre , but notably less psi in the other. :thumbsup:

That's right.It takes very little PSI or tyre circumference variation on a front wheel drive car before it can be felt as uneven steering . An LSD can often accentuate the problem.
Steve

Thanks for the input guys, some great suggestions there...
As an update, im changing my Type R knuckle, LCA's and adding Roll Centre Adjusters this weekend. Hopefully that will resolve the situation!
Will keep you guys posted! Thanks again!