Modify the upper trailing arms

[Jimmi The Kid]

I am building my AE86 for trackdays, (grip race), and I wondered how I can modify the upper trailing arms so the are more horizontal, when I have lowered the car. The arms actually hits the metal on the bracket now.

I thinking to move the bracket a bit up, but I have to reinforce it a lot to keep it stable. I borrow a picture here: http://i117.photobucket.com/albums/o65/j...008269.jpg

I have also thought to use equal lenght traling arms, but its a bit difficult to get it right. Like this guy here: http://img187.imageshack.us/img187/3112/cimg0925nw3.jpg
I'm not so happy tho do this operation, as I might will use the car as normal daytime car later. But if its realy nesesary to build these trailings arms boxes, I will do it.

The lower trailing arms can be horizontal just fitting some tractions brakets.


Does anybody have an idea what should be the best choise?

[firehawk]

I'm going for the equal length arms in my car and I'm currently building the housings for the new brackets (link). It's going to be a dedicated track racer though, so there's no need to compromise.

One possibility might be not using equal length arms, but only slightly longer upper arms with a smaller housing protruding through the floor. This would make it possible to carve a bit of foam off the back seat and still be able to mount it back on the car.

This article is a pretty useful read when modifying the rear axle linkages:
http://www.afcoracing.com/tech_pages/4link.shtml

[Jimmi The Kid]

Thanks for the link. It seams pretty difficult to figure out, where to drill the holes in the new box.
If I go for the full Racecar, I can also get rid of the sparewheel and make room for a rear diffuser instead.

This one I have to sleep on :wink:

[Jan Pedersen]

Hey Jimmi! You can make it drive very well without using equal length arms. I would start off stock untill you decide on a fully built race car