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Mon Dec 08, 2008 12:36 am

So I think Im going to be building up my rear end in the next couple weeks and im stuck with a little problem. I think I am going to end up using FOA shocks but I see they now sell bypasses. I was thinking about going with 3x3s, some 30mm torsion bars and some FOA triple bypasses. How would a combo like this compare with a coil over setup without bypasses? Will my torsion housing be able to take the abuse? Will I be safe with a future ecotec hanging back there? Price seems comparible considering springs are 75 bucks a piece x4 and I wouldnt have to buy coil over conversion plates and bypasses would be pretty cool to have.

Mon Dec 08, 2008 12:41 am

your torsion housing will take a lot more abuse with a set up that big. if it would break or not is hard to say. but yes its a good possibility that you could spin out the inner splines.

i would say go with the coil overs. there is a great deal of improvement to be had over torsion bars, the adjustability and ease of changing out springs for one. if you decide that your coil overs are not enough you could always weld up a second set of mounts for some bypass shocks.

Mon Dec 08, 2008 2:50 am

Go coil..... better on the ol gals rear!! iv seen a few torsion blow outs..... not cool!!! if you have the money to do it,, DO SO!!

Mon Dec 08, 2008 8:18 am

If you can afford it the best solution would be a hybrid of them both.

Go with a coil and a bypass. You will have the best of both worlds then.

Mon Dec 08, 2008 11:16 am

I'd love to have a coil over with a bypass, not happening though. So thinking out of the box has anybody ever taken a look at funco sand cars? They use airbags on the rear. Im aware of the problems of the exponetial rising spring rate so I was thinking of supplimenting the stock 23-22mm bars with bags. This would lessen the rate of exponential growth and I could even tune the rate of exponential growth similar to a dual rate coil over. by just playing with the preload on the torsion bars and amount of air in the bags. I'll probably just go with coil overs, but this seams like it would be a pretty trick setup.

Mon Dec 08, 2008 11:22 am

I'de go coilovers over torsions and bypasses.

Mon Dec 08, 2008 11:23 am

OK. Educate me. What is this bypass you are speaking of

Mon Dec 08, 2008 11:38 am

joescoolcustoms wrote: OK. Educate me. What is this bypass you are speaking of

basically multiple fluid bypasses so the shocks valving will change over the course of the shaft position.

Mon Dec 08, 2008 12:58 pm

Motochris wrote: I'de go coilovers over torsions and bypasses.

I also agree that would be the prefered method over a t-bar/ bypass.

Get yourself a nice dual rate shock and make sure you tune it and you will ber amazed on how well the car will handle.

Mon Dec 08, 2008 9:58 pm

Started out with 27mm torsions and Bilstien 7100s, caught a pretty good wash straight on and it spun the splined sleeve inside the torsion housings. If you decide to run torsions I'd highly recommend welding that area much better. I switched to FOA Coilovers and havent looked back. I really like the FOAs, great shocks and a coilover setup is soooo much easier to dial in.