Posted February 8, 201312 yr comment_414315 Hey everyone, I've been working on the suspension on my 240z, and marveling at all the beautiful control arms available from places like Arizona Z and such...but I can't afford them. I was thinking that maybe I'd try to build some rear control arms as I'm taking a welding class and need a final project. Has anyone tried this before? I realize I'd need a control arm to build a template for dimensions and such, but I don't want to bite off more than I can chew. Here's a sample of what I'd like to build.https://technotoytuning.com/nissan/280z/rear-lower-control-arms-datsun-240z-260z-280zbrakesThank you in advance!Adam Link to comment https://www.classiczcars.com/forums/topic/45630-building-rear-control-arms/ Share on other sites More sharing options...
February 8, 201312 yr comment_414325 Hybridz.org (suspension section)Have Arizona Z rears in my street 240 and TTT rears in the 240 race car. Both work great. Link to comment https://www.classiczcars.com/forums/topic/45630-building-rear-control-arms/#findComment-414325 Share on other sites More sharing options...
February 8, 201312 yr comment_414326 I have seen a modification involving just the brace behind the diff. The brace was cut and the center section removed. An adjustable bolt was then welded into place. This made toe in adjustment possible. Chamber adjustment was done using chamber plates in the tower. I have some photos that I can post tomorrow.Chas Link to comment https://www.classiczcars.com/forums/topic/45630-building-rear-control-arms/#findComment-414326 Share on other sites More sharing options...
February 8, 201312 yr Author comment_414329 Thanks for your help, everyone, I'll check out Hybridz in a second. Also, I'm very interested in the modified control arms you talked about Chas. Hmmm. Sounds like a simpler project, though I think the tow in the rear was OK. My main focus is the camber, but it would be nice to do both. Photos would be great! Were you able to use stock shock towers with the camber plates? I'd love to go to coil-overs, but that's just to spendy for me right now. Link to comment https://www.classiczcars.com/forums/topic/45630-building-rear-control-arms/#findComment-414329 Share on other sites More sharing options...
February 8, 201312 yr comment_414336 I found the photo. Its not very detailed, but it gives you enough info to be able to make your own. Chas Link to comment https://www.classiczcars.com/forums/topic/45630-building-rear-control-arms/#findComment-414336 Share on other sites More sharing options...
February 8, 201312 yr Author comment_414355 Wow--thanks for the picture, Chas, that gives me a lot to think about! I'll take a close look at the pic while I'm looking at the 240 so I understand what I need to do. Link to comment https://www.classiczcars.com/forums/topic/45630-building-rear-control-arms/#findComment-414355 Share on other sites More sharing options...
February 9, 201312 yr comment_414403 Using stock springs will only allow about 3/4. Negative camber - thats all the more room there is unless you can bring out the bottom .The stock control arms are actually very strong, so dont under estimate the strength needed of the control arms.Like said before - Hybridz is a good source for info. Link to comment https://www.classiczcars.com/forums/topic/45630-building-rear-control-arms/#findComment-414403 Share on other sites More sharing options...
February 10, 201312 yr Author comment_414454 It does look a little tight in there...and I actually have negative camber now, I need to straighten out the wheels, and my guess is that'll take another degree or so. If I understand it, I'd actually want to shorten the control arm...and right now the bushings are pulled all the way in...shortening it as much as they can. That's how I started thinking maybe I should just try to build ones that are adjustable...or just shorter. I figure something like a .5" would do it, but I'm guessing there's a way to measure for this (and I'd still have the adjustable bushings for fine tuning).Also, I did search through hybrid Z, and they had a couple good posts....but most of them included buying new control arms, coil overs with camber adjustment, or camber plates. For now, all are out of reach for me financially. :-(Here's the best link I found on hybrid, FYI: Adjustable Control Arm / LCA / Lower Control Arm FAQ - Brakes, Wheels, Suspension, and Chassis - HybridZ Edited February 10, 201312 yr by z boy mn Link to comment https://www.classiczcars.com/forums/topic/45630-building-rear-control-arms/#findComment-414454 Share on other sites More sharing options...
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