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Are Roll Center Adjusters (RCAs) available?

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Old 05-28-04, 01:30 AM
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Are Roll Center Adjusters (RCAs) available?

I swapped Rx-7 (GSL-SE) front suspension into my AE86, after doing so, my A arm (correct term?) has to reach upwards. I'm looking for a Roll Center Adjuster (large spacer for lowered cars to put the arm back into spec).

Are these available? I've briefly searched around and found nothing (nor have i heard of them being available for the FB)
Old 05-28-04, 11:43 AM
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Why did you do that?
Old 05-28-04, 04:27 PM
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Turn-in spacers I think are what you are looking for. Jim at Gforceengineering.net makes them.

Why one earth did you swap the suspension onto a AE86? I mean if you're going to the trouble of custom fitting a suspension why not find a unequal length A-arm one to put on it?
Old 05-28-04, 05:24 PM
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And here I was considering (somewhat) the opposite swap...

edit: G-Firce Engineering's turn-in spacers adjust not only the roll center, but the Ackerman as well, as I see it. Being cheap, and needing more ground clearance/suspension travel anyway, I simply raised my car, first with the hockey puck method, and soon, with some 12"x200lb-in springs.

Last edited by peejay; 05-28-04 at 05:27 PM.
Old 05-29-04, 02:37 AM
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Two reasons, i had aftermarket suspension on my GSL-SE (Racing Beat) and the offset for my AE86 wouldn't allow me to fit a set of aftermarket rims.

I didn't see a reason to buy new rims and new suspension when i could use what i had.

Reguardless, had i have used aftermarket suspension for the car, i'd still want the adjusters to put the arm back to spec.

Edit:

I had a look at the site, $129 is redicules, is this the only site currently offering them?

Last edited by O 16581 72452 5; 05-29-04 at 02:59 AM.
Old 05-29-04, 07:23 AM
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RB and Mazdatrix sells them too, but they arent ackerman correcting. Also, the g force spacers wont work on a street car. They are a race only part.
Old 05-29-04, 01:52 PM
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Originally posted by Rx7carl
RB and Mazdatrix sells them too, but they arent ackerman correcting. Also, the g force spacers wont work on a street car. They are a race only part.
I've browsed each site for 20 minutes and cannot find them.
Old 05-29-04, 02:13 PM
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They are part of the lowering kit. The setup that physically relocates the suspension an inch higher. It comes with two replacement strut towers (cut off the tops of the old ones, weld in the new ones) and some ball joint spacers to get roll center back to stock.
Old 05-29-04, 02:18 PM
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I thought they sold the spacers seperately? Maybe they stopped, but I doubt it as its a good mod for certain race cars.
Old 05-29-04, 05:44 PM
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Do you have any pictures of the swap? Anything wierd needed? I picked up a 82 toyota starlet (ae86's little brother) and was thinking of swapping on ae86 suspension but that widens the track a bit and makes finding wheels a pain. Might have to try some non se front suspension on it and see where the rims sit.

Later
Randy
Old 05-30-04, 12:19 AM
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Originally posted by Eville140
Do you have any pictures of the swap? Anything wierd needed? I picked up a 82 toyota starlet (ae86's little brother) and was thinking of swapping on ae86 suspension but that widens the track a bit and makes finding wheels a pain. Might have to try some non se front suspension on it and see where the rims sit.

Later
Randy
I ran into two main problems, the camber was signficiantly positive (i purchased camber plates). The other is the top of the Rx-7's strut isn't very compatable with the spindle (thing-a-thing that bolts to the top of the shock tower) allowing for little tightening of the bolt, if you decide to go with the swap, you'll see what i'm talking about. I didn't try swapping the lower arms from the SE, i started to and wasn't able to get them off the AE86 so i gave up and purchased camber plates insted (would've most likely been very negative anyway).



The picture was before the camber was adjusted, it's noticeable in the picture.

Last edited by O 16581 72452 5; 05-30-04 at 12:22 AM.
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