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Ludicrous Speed!
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Discussion Starter #1
After the springs my rear camber is at -1.8 degrees, way too much. Can't find any way to adjust the camber, only the toe. Anyone know of any way to fix this?

Also, with the stock rims/tires the front allows only about -1 degree before the tire hits the strut. I am actually going to need 3mm spacers to get more than that. Annoying.
 

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Let me know if you find some good spacers, I have been looking for them.

I cannot find the camber adjustment for the rear either, although it did seem to diminish a little when I adjusted the toe. If we don't do something about it I worry about eating the inside of the tire tread way faster than the outside. That is a shame too because these tires are designed to sit flat.

This applies to the Eibach Pro Kit springs for those who don't know.

GranTurismoOmologato
 

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2Cool said:
After the springs my rear camber is at -1.8 degrees, way too much. Can't find any way to adjust the camber, only the toe. Anyone know of any way to fix this?

Also, with the stock rims/tires the front allows only about -1 degree before the tire hits the strut. I am actually going to need 3mm spacers to get more than that. Annoying.
I am awaiting a rear camber kit to test over the next few weeks. If it works, I will post it and import them. If it does not work, I will look into alternate sources. Stay tuned...

Thx!

Jim
 

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Trapper
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If you are a drag racer, then I agre that is too much camber on the drive wheels. However, that is not too much for solo1/soloII SCCA type racing. The radial tires are much more forgiving of camber than the old bias-ply were. I ran -1.0 degree on the rear of a GT1 Corvette in SCCA National racing with bias ply slicks.

Just take a look at F1 or CART cars when set up for a road course. I have put over 20,000 miles on a Grand Prix GTP with that much camber and there is no significant difference in tire wear across the tread.

I would almost recommend that much camber for the front of the GTO, as it will definitely improve cornering.
 

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Ludicrous Speed!
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Discussion Starter #5
I agree, the front should be closer to -1.5 to -2.0 (or even slightly more). The problem is that the most I can get out of the front is less than -1.0, before the wheel hits the strut. So I am going to use some 3mm spacers to try and get a bit more out of it, as the adjustment is there, but the tire interference must be dealt with. Ultimate solution there is a better offset rim, somewhere along the 40mm lines.

Next, -1.8 on the rears with only -1.0 on the front is not balanced. The car will tend to plow and understeer, with a lack of rear rotation when desired. I was hoping for -2.0 up front and -1.0 in the rear, with zero toe all around. I can't do that without some modifications though.

I too play in Solo II and also NASA open track events. I fully intend to take the next year regional ESP title in this car, after some sorting. I took the same class in 2003 in my Evo VIII (Central Florida East SCCA Solo II), and have locked in the STX trophy for 2004 in my MINI Cooper S. So I do have a bit of experience with alignments... heh
 

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Ludicrous Speed!
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Discussion Starter #6
Ok, bit more research and some email exchanges with CAPA and I have their assurance that the rear camber bushings they stock will fit the GTO. I am working the details of purchasing a set, so we will see how they work.

http://www.capa.com.au/ls1_suspension.htm
 

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Great Digging! Please post your results. I will probably go this route as well if it works out.

Thanks,
GranTurismoOmologato
 

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2Cool said:
After the springs my rear camber is at -1.8 degrees, way too much. Can't find any way to adjust the camber, only the toe. Anyone know of any way to fix this?

Also, with the stock rims/tires the front allows only about -1 degree before the tire hits the strut. I am actually going to need 3mm spacers to get more than that. Annoying.
Discount tire has Enkei wheels with a 38 mm offset. I am a bit nervous to go that farther out, stock is 48 mm. I think I have seen a few wheels with 41 mm offset, so 7mm outboard. That should give some more room for tire-strut clearance. Not sure on the fender lip though. When I ran at Grattan, there is a right hander that hits the suspension pretty hard in the middle of the turn. Kinda nervous about hitting the fender there..
 

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H&R spacers

1lapgto said:
H&R makes great spacers, I have used them quite a bit on other applications.
H&R Springs

Later,

Enrique
I just spoke with H&R about spacers for the gTO. They do not make any, BUT, the tech rep says thay are all CNC machined in Germany. BMW wheels are 5x120mm as well, but on a 72.5 mm center. GTO's are about 67 mm. I told the rep, if they CNC machine them, all they have to do is to cut the center hole a little smaller... seems like it fell on deaf ears... MAybe I'll have to have my lathe guy make some up. They are pretty simple, I wonder how hard it is to find longer studs.. Of course you can just go with different offset aftermarket wheels.
 

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IBM GTO owner
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The gto uses a semitrailing arm rear supension, the same set up as a bmw 3 series, 92-05. I would guess camber is adjustable just like it is on bmw. Bmw does not use accentric bolts to adjust camber on the rear of the 3 series. The 3 bolts at the front of the trailing arm on the 3 series have a sloted plate they ride in. Meaning you loosen the front mounting bolts and then push the trailing arm out or pull it in. My guess is the gto should be very similar to this if it is adjustable. When i get a chance i will take a look at mine and see if its the same but that won't be for a few days.
 

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NASCAR-A-HOLIC
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Is the camber adjustment kit Eibach makes only for the front? I've been told they don't lower the back enough to really affect camber.
 

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GTO / LS-1 Specialists
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We have sent a quite few camber kits over to the USA for the GTO's and they fit as they would to the Monaro here..

A full kit has both top and bottom adjustable bushes so you can get rid of alot of the camber that the car has once lowered.. And also has the removal tool to get the old bushes out... Which is handy..

They retail for around $135.oo USD + shipping.. ;)
 

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Ludicrous Speed!
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Discussion Starter #14
Got the CAPA kit, just looking for time to install it. Very nice parts, looks to be a straightforward install.
 

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CAPA Performance said:
We have sent a quite few camber kits over to the USA for the GTO's and they fit as they would to the Monaro here..

A full kit has both top and bottom adjustable bushes so you can get rid of alot of the camber that the car has once lowered.. And also has the removal tool to get the old bushes out... Which is handy..

They retail for around $135.oo USD + shipping.. ;)

AHA!!! I knew somebody had to have something to adjust the camber on the front!

I was on your website, and am interested in the caster kit, as well as the strut mount kit. With the 12mm offset, there is no clearance issue with the springs hitting the strut towers? Assuming stock offset wheels, how much more camber does this give you, assuming the same clearance between the strut and the tire (sorry tyre :) )

Finally, I found a place that can keep the outer bands of tread from tearing off on the road course..
 

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NASCAR-A-HOLIC
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So the Eibach Pro Kit affects camber that much??? Thought it only dropped car .8" in back.
 

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Member #804
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2Cool said:
After the springs my rear camber is at -1.8 degrees, way too much. Can't find any way to adjust the camber, only the toe. Anyone know of any way to fix this?

Also, with the stock rims/tires the front allows only about -1 degree before the tire hits the strut. I am actually going to need 3mm spacers to get more than that. Annoying.
I just aligned my GTO for shiots and grins with my shops new Hunter 811; within doing that it illustrates how you make adjustments, with the rear camber it comes up "not adjustable" which means holden/pontiac don't have an approved method of doing so. Far as the 1.8* in the rear, long as both sides are the same or close I wouldn't worry about it, but it sounds like you will be able to get some parts from australia to correct your rear camber.

Front camber has an awsome adjustment with these holdens, you loosen the two strut bolts and theirs a adjuster bolt on the knuckle (tighten to + loosen to - camber) no more hanging off the wheel and somebody cranking down on the strut bolts.
 

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Ludicrous Speed!
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Discussion Starter #18
Yep, the front has incredible range and is very easy to adjust. Main issue there is the limitation of space between tire and strut. At -.8 degrees camber my tires rub the strut. I am going to try again now that I have the 40mm offset rims, as the additional 8mm spacing should allow me to get closer to my -1.5 goal for the front.
 

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Member #804
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you just need the right wrench, I found a craftsman racheting 8mm (one of the clunky racheting wrenchs) fits in there well.
 
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