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1st Gen Rear Suspension

Old 03-25-03, 08:35 PM
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1st Gen Rear Suspension

I have an '84 GSL-SE, and have come to the conclusion that I want to go faster on road racing courses, which will necessitate having the car's rear end stick better. I contacted ISC about their "3-link" rear setup with Panhard rod, which requires some welding to attach. Any experience with this or other modifications to enhance 1st Gen rear adhesion?
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Old 03-26-03, 09:05 AM
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Those items are worth every penny!
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Old 03-26-03, 08:07 PM
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Hey Buttlips! Do you have a tri-link on your 7? Any chance you're making the trip to Gateway this weekend?
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Old 03-27-03, 07:39 AM
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Speed,

I'm not heading out this weekend since there's no National race. I'll be there in May for the first Regional/national weekend.

Yes, I do have a Tri-Link. Mine is a modified version of the one Jim Susko sells at G-Force.
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Old 03-27-03, 04:01 PM
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buttlips: how smooth is your seven with the trilink and panhard bar.. i have both in mine, and it feels like it is binding (abrupt, as if it was almost wheel hop) when i am at low rpm's..
soon i am going to put a fatter panhard bar on, and change the third link out to one that mouts ontop of the drive shaft (into the storage bin area). but i am still woundering if there is something messed up with my setup.
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Old 03-27-03, 09:34 PM
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buttlips: How do the ISC and G-Force trilink setups compare? How do I contact G-Force? Are there other setups I should consider? (I'm only aware of the makers of racewear by the same name)
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Old 03-27-03, 11:23 PM
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Old 03-28-03, 07:40 AM
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Riff,

Mine is really smooth. Look under your car to see if there is evidence of any parts hitting the underside of the tub. Otherwise, I would re-evaluate your springs and shocks for the source of your wheel hop. The Tri-Link should really free up the movement in the rear end and prevent binding.

Elwood,

The main difference between the two is how they mount. The ISC setup mounts to a frame rail and requires welding, whereas the G-Force version mounts in transmission tunnel and can be bolted in. The geometry on the two is basically identical.

I would offer this pice of advice with the G-forcemodel. If you're doing any really hard driving (i.e. road racing with slicks on the car) it's a good idea to beef up your transmission tunnel. I ripped mine out of the car, and I know many other racers who have done the same.
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Old 03-28-03, 04:50 PM
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I personally would be leery of bolting any suspension pickup points in.

Hell I'm leery of having a big ol' bend in the middle of the link. Which is why if I go 3-link it will be custom done. Screw the floorpan, I'll cut it, I want *strength*.
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Old 03-28-03, 04:56 PM
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I have G-forces tri-link but I autocross.

http://www.cardomain.com/id/7heaven
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Old 03-28-03, 09:35 PM
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Originally posted by peejay
I personally would be leery of bolting any suspension pickup points in.

Hell I'm leery of having a big ol' bend in the middle of the link. Which is why if I go 3-link it will be custom done. Screw the floorpan, I'll cut it, I want *strength*.
It's plenty strong. Yes its a compromise cause of the rules, but quite adequate. Never heard of one breaking yet. Mines rock solid.
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Old 03-30-03, 11:24 PM
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Yeah but you are bound by rules.

I still have dreams of 400 or so HP from a light pressure turbo bridge/peripheral motor. Having that much power might make me consider upgrading the suspension.
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Old 03-31-03, 07:46 AM
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I would love to run a straight bar into the car, but that would move me from EP to GT-3.

RX-7 Carl: I never had a problem when I was running in ITA, but since moving to EP, I've broken a couple of them. That's why we modified ours. We use the same geometry as Susko's, but our bar is much beefier.
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Old 04-01-03, 05:42 PM
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is yours the type that mounts over the drive shaft (cutting into the storage bins)? i am thinking about ditching the third link that i have and moving over to something like that... i am not building my car to meet any class regulations, so i am not worried about that.
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Old 04-02-03, 10:00 AM
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No, mine does not cut into the car at all. If you have no class rules to car about, using a straight link that cuts through where the bins are located is the way to go. It's stronger than the ones we use which have a bend in them.
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