wheel catching lower wishbone
wheel catching lower wishbone
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Discussion

chris212

Original Poster:

133 posts

174 months

Monday 7th September 2020
quotequote all
I've had the geometry checked and everything is fine. When on full right lock the inside of the o/s wheel rubs on the inside leg of the lower wishbone. Obviously only a problem when parking, etc but would like to fix it before next MOT . Any ideas ? Thanks.

Zener

19,222 posts

238 months

Monday 7th September 2020
quotequote all
Steering rack sounds like its not centered correctly scratchchin i.e more lock one way than other if thats the case bit of history there poorly fitted steering rack to steering column/steering wheel indexing , your geo technician should of worked that one out however rolleyes

spitfire4v8

4,018 posts

198 months

Monday 7th September 2020
quotequote all
chris212 said:
I've had the geometry checked and everything is NOT fine but the techie I took it to was incompetent. When on full right lock the inside of the o/s wheel rubs on the inside leg of the lower wishbone. Obviously only a problem when parking, etc but would like to fix it before next MOT . Any ideas ? Thanks.
Fixed that for you.



Damn ^ simon beat me hehe

chris212

Original Poster:

133 posts

174 months

Monday 7th September 2020
quotequote all
Thanks. How would I fix that?

O mage

229 posts

64 months

Monday 7th September 2020
quotequote all
Screw the o/s track rod end on the rack clockwise 1 turn then screw the n/s end off anticlockwise 1 turn to move the rack over.

chris212

Original Poster:

133 posts

174 months

Monday 7th September 2020
quotequote all
Would the steering wheel be off centre then?

indigochim

1,980 posts

147 months

Monday 7th September 2020
quotequote all
If you're steering wheel becomes crooked when the rack is sorted it's a simple job to remove and recenter it.

O mage

229 posts

64 months

Monday 7th September 2020
quotequote all
chris212 said:
Would the steering wheel be off centre then?
Yes but you might not notice 1 turn, depends how far you have to go, it can be corrected at the steering wheel.

spitfire4v8

4,018 posts

198 months

Tuesday 8th September 2020
quotequote all
What you need to do is go back to first principles.

Start by making sure the track rods are the same length from inner knuckle joint to track rod end. Normally this is just a case of looking to see that the same number of threads are showing past the track rod end locknut, but if in any doubt measure it.
By making sure both track rods are the same length you maintain the relationship of toe change when turning side to side.
You then need to set the front camber, then the front toe.

You then need to see if you have any clearance issues and if you do you need to work out 1) why your car is different to every other griff/chim which doesn't catch on lock .. and if that all checks out you need to 2) put a rack stop limiter in to limit the turning angle for the affected side.

Trimming the amount of clearance by robbing clearance from one side to improve the other by moving track rod ends is a quick and easy way, but is in reality the bodging way of doing it because you will have a different toe change on each side as you turn left to right.

This might only be a small amount if you have got a minimal distance differential across the track rods, but if you're going to do it you might as well get it right - or as close as you practically can - instead of bodging it.

Get the track rods equal, set the geo, and only then work out what you need to do if you then have clearance issues.

ie make the car right in terms of geo before doing anything else. I don't trust that the place you took it to even got the first stage right.

gavgavgav

1,566 posts

246 months

Tuesday 8th September 2020
quotequote all
spitfire4v8 said:
2) put a rack stop limiter in to limit the turning angle for the affected side.
I got caught out with this when swapping racks for a refurbed one, the lock stops were white discs and they needed swapping over and that stopped the wheel touching. For me it was only one side that touched as well. Do all the cars have then installed as standard?

Zener

19,222 posts

238 months

Tuesday 8th September 2020
quotequote all
gavgavgav said:
spitfire4v8 said:
2) put a rack stop limiter in to limit the turning angle for the affected side.
I got caught out with this when swapping racks for a refurbed one, the lock stops were white discs and they needed swapping over and that stopped the wheel touching. For me it was only one side that touched as well. Do all the cars have then installed as standard?
No , only when fitted with after market alloys or upgraded to 16" front rather than 15" standard these are 7" rims rather than 7.5" hence possible contact with W/B chances are if you centre the rack like Spitfire says the steering wheel will be cocked anyway possibly where someone as previously naused it up frown steering wheels and steering rack centre are indexed together i.e True to each over or should be on assembly