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I mentioned in another thread that it is relatively easy to convert to rear coil-overs on our 105/115 cars for ride height adjustment and corner weighting. Since I had a few PM's with questions, I thought I'd just start a new thread. Here's what it takes:
(1) remove the spring pan from the trailing arms. (2) weld on Coleman coil-over mounts (see picture) directly over the original shock holes on the top of the trailing arms. (3) Source an appropriate coil over shock with an eye mount at the bottom and a bayonet mount at the top. (4) Source coil-over springs in the rate that you think you need. (5) Fabricate an aluminum adaptor to bring the upper spring seat down to the size of your coil-over spring.
The attached picture shows the mount on the trailing arm.
Of course this would all be overkill for a street car, but well worth the effort for a race car or autocrosser. On my pretty-serious vintage race GTV, I am running Carerra (now QA1) 8264 shocks. These are an aluminum-bodied coil-over shock that are not adjustable, but are revalvable. The springs are 300 pounds in rate and 8-inches in length. Depending on your overall set up, you may need different shock valving, different rate springs, or even shocks with different compressed and extended lengths, so measure carefully before buying the shocks! A great side benefit of the conversion is that coil over springs are available in about any rate you want and are pretty cheap.
Hope that helps anyone considering the project!
Erik
(1) remove the spring pan from the trailing arms. (2) weld on Coleman coil-over mounts (see picture) directly over the original shock holes on the top of the trailing arms. (3) Source an appropriate coil over shock with an eye mount at the bottom and a bayonet mount at the top. (4) Source coil-over springs in the rate that you think you need. (5) Fabricate an aluminum adaptor to bring the upper spring seat down to the size of your coil-over spring.
The attached picture shows the mount on the trailing arm.
Of course this would all be overkill for a street car, but well worth the effort for a race car or autocrosser. On my pretty-serious vintage race GTV, I am running Carerra (now QA1) 8264 shocks. These are an aluminum-bodied coil-over shock that are not adjustable, but are revalvable. The springs are 300 pounds in rate and 8-inches in length. Depending on your overall set up, you may need different shock valving, different rate springs, or even shocks with different compressed and extended lengths, so measure carefully before buying the shocks! A great side benefit of the conversion is that coil over springs are available in about any rate you want and are pretty cheap.
Hope that helps anyone considering the project!
Erik
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