Though I would share for those interested
These adjustable arms came about after a track day at one of our race circuits
Every corner we came to the car went around OK ish, but my god, the tyre squealing was unbelievable!, every corner, left or right.
After a lot of head scratching when I returned home and a bit of talking to those in the know
We put some of this down to the tyres (older Michilin Pilots) then decided to do a full wheel alignment to see what was going on, surprise, surprise, the back end is out a mile, toe out on one side and toe in on the other, a bit more measuring and we find that the wheel base is shorter on one side than the other (cant quite remember how much, about 5-10mm from memory), so after more measuring, we work out the whole rear subframe is twisted in the car, not sure how this has happened, no real sign of any major panel work or accident damage, maybe it was just built wobbly or the subframe was out?? who knows?
We decide the easiest fix for this and to give rear camber adjustment as well after having lowered the car is to make the rear arms adjustable for toe and camber.
As you can see in the photos we achieved this by eccentric bolts, system works a treat, the bolts for this were from a Toyota, and we custom made the little hoops for the large washer to run in.
On the upside, during the current rebuild of the car we have now rectified the twisted rear end when we rebuilt the rear sills, she is now as square and true as possible, and I have rear wheel adjustment to boot!
http://i152.photobucket.com/albums/s198/kasbatts/c50828af.jpg
http://i152.photobucket.com/albums/s198/kasbatts/9d537517.jpg
http://i152.photobucket.com/albums/s198/kasbatts/f6487c31.jpg
These adjustable arms came about after a track day at one of our race circuits
Every corner we came to the car went around OK ish, but my god, the tyre squealing was unbelievable!, every corner, left or right.
After a lot of head scratching when I returned home and a bit of talking to those in the know
We put some of this down to the tyres (older Michilin Pilots) then decided to do a full wheel alignment to see what was going on, surprise, surprise, the back end is out a mile, toe out on one side and toe in on the other, a bit more measuring and we find that the wheel base is shorter on one side than the other (cant quite remember how much, about 5-10mm from memory), so after more measuring, we work out the whole rear subframe is twisted in the car, not sure how this has happened, no real sign of any major panel work or accident damage, maybe it was just built wobbly or the subframe was out?? who knows?
We decide the easiest fix for this and to give rear camber adjustment as well after having lowered the car is to make the rear arms adjustable for toe and camber.
As you can see in the photos we achieved this by eccentric bolts, system works a treat, the bolts for this were from a Toyota, and we custom made the little hoops for the large washer to run in.
On the upside, during the current rebuild of the car we have now rectified the twisted rear end when we rebuilt the rear sills, she is now as square and true as possible, and I have rear wheel adjustment to boot!
http://i152.photobucket.com/albums/s198/kasbatts/c50828af.jpg
http://i152.photobucket.com/albums/s198/kasbatts/9d537517.jpg
http://i152.photobucket.com/albums/s198/kasbatts/f6487c31.jpg
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