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Originally Posted by
Egoracing
In pic #3 there is a shock mount on the inside of the frame at an angle to the rearend on the chassis?????? Never seen that before that I can remember!@#
That one threw me for a loop as well...
It looks like the rearend and frame both have liftarm mounts i would try that if you are doing the 4bar deal.
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It's definitely a 4 bar chassis that was setup to run 2 bar, and i'd also agree should be lift arm. Either weld the clamp brackets back down, or get birdcages put on it and go 4 bar.
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Looks like it used to have a swing arm type suspension which would have had coil over eliminators in front of the rear end hooked to the swing arm and the shocks mounted behind the rear on clamp mounts using brake floaters on both sides and a long panhard bar mounted behind the rear. That's the set up like Ohio's Laser chassis used to run. After that it must have undergone changes from a rookie racer with access to a stick welder and some scrap steel. JMO.
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I wouldn't say your wasting time with this chassis just decide which way to go and get started.but from what I can see the cheepest way would be a 3 link with a 5th arm set up. we ran this a few years ago when we were first getting started in a lm. very easy to set up and fewer adjustement to get f'd up with. us a chain on the 5th arm to set the pinion angle at 6 to 8 degrees. if you decide to go 4 bar you'll need birdcages,5th arm or add pullbar and brackets plus do something with the lower bar mounts on the frame or build custom bolt in mounts to get the lower bars to a length that will work with the top bars. I like the upper bars tobe 1 inch to 2 inches longer than the lower bars.
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Thanks for all the help everyone. I guess I'm going to make it a 4 bar car. I have the pull bar for it already but I'm just going to have to buy a set of bird cages. The right side caliper mount floats on the rear housing and the left caliper mount is welded to the axle tube. I'm think I'm going to just add two new bird cages and go from there. Not going to be perfect but it should get me around the track for a starter car.
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not to dissuade you from 4 bar, but I kinda agree with racing6mod here. it's already pretty close to race ready right now, why don't you just reweld that left clamp bracket and race it and see what you think, rather than adding extra expense right away? The 3 link setup is very simple, whereas 4 bar you can adjust yourself out of the game pretty quick if you don't know what you're doing. I'd probably keep it as is for a few races, see what you think, and go from there.
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So to make it a 3 bar car all I need to do is reweld the lr bracket clamped around the rear. I'm assuming that is what keeps the rear from rotating so the pull bar is not used. Any suggestions on shock and spring placement and pinion angle?
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Nevermind I see that 1blacksheep answered those questions already. So just so I'm clear. All three bars that are in the car are going to stay. Set pinion angle and weld left cage. Add pull bar and leave the j bar. Mount the springs foward of the axle and the shocks rear of the axle.
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If you do that it, you will have a 2 link LR, 4 bar RR. If you want to go 3 link take the top bar off the RR and weld both sides up. Put a bull bar in it and put the springs on top of the axle tube.
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in the 26th post he said the rr was a brake floater not a 4 bar birdcage like some thought so yes easy 3 link set up as well as on the cheap to get started.
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PM sent, dont weld nothing yet.
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