Billy Sport + H&R Race + GC Spec E30 Plates = ??? Alignment Specs

[E turd]

Hey guys. I read that some cutting might have to be done to get less negative camber with this setup and I just want to make sure it is necessary before I take the grinder/dremel to the shock towers.

The car is a daily driver, but gets autox use once a month. I don't mind a little premature tire wear in exchange for better performance/more fun while driving, but I am wondering where that medium is spec wise on the alignment machine.


At present, the aligment printout shows the following:

Camber
Driver front: -0.9
Passenger front: -1.7

Caster
Driver front: 8.6
Passenger front: 8.5

Toe
Driver front: 0.12
Passenger front: 0.18


I had the tech remove two allen screws from each plate to max out camber adjustment, but I'd like to be able to run all of the screws if possible and even with the screws out, the passenger front side camber is still out of factory spec. I realize that the alignement specs might need to deviate from the factory with the lowered setup, but haven't the foggiest idea about where they should be.


Thanks in advance for any input you guys want to offer.

[e30s52]

Could you post some pictures of your car and how it sits please? I have been thinking about running a similar set up.

[Jean]

This post makes no sense at all. Are you adding camber plates to set the camber to 0 or are you trying to get as much camber as possible?

"I read that some cutting might have to be done to get less negative camber " and "I had the tech remove two allen screws from each plate to max out camber adjustment, but I'd like to be able to run all of the screws if possible and even with the screws out, the passenger front side camber is still out of factory spec. "

I had billy sports with gc camber plates with stiffer rates than the h&r race springs + gc plates and had the camber at about -2 and my tire wear was pretty damn even with rt615s.

[E turd]

I'd be happy to snap some pics, but the rear isn't done yet. Let me know and I'll out and get some.

[e30s52]

That would be great if you could get some pictures of the front.

[E turd]

This post makes no sense at all. Are you adding camber plates to set the camber to 0 or are you trying to get as much camber as possible?

"I read that some cutting might have to be done to get less negative camber " and "I had the tech remove two allen screws from each plate to max out camber adjustment, but I'd like to be able to run all of the screws if possible and even with the screws out, the passenger front side camber is still out of factory spec. "

I had billy sports with gc camber plates with stiffer rates than the h&r race springs + gc plates and had the camber at about -2 and my tire wear was pretty damn even with rt615s.

My bad. Poor knowledge of tech speak on my part. By "maxed out" I meant that in an effort to get as close to -0.7 (factory spec) camber, I have run out of plate travel. The allen screws are hitting the edge of the strut tower opening. I know that the factory spec is not necessarily the thing to strive for so I am hoping to hear what others suggest as being a good medium for performance without a ton of premature tire wear. Sorry again for any confusion and thanks for your contribution. :D

[z31maniac]

You have chassis/strut issues then.

My car with M3 cabs and the GC plates set at around 1.25° were at -2.5° camber on the machine.

M3 or offset CABS, will give you additional camber.

[Jean]

E turd, -1 would be pretty damn safe. Rotate your tires and you'll be fine.

[E turd]

Here are pics of the plates installed:





Pics of the car:






Keep in mind that the rears are still stock.



I forgot to mention that I also have the m3 offset CABs. Regarding the post prior, are your plates the SpecE30 ones and what kind of strut/chassis issues do you speculate might be going on?


Thanks again!

[Philo]

Hmm. . . What size tires are you running? I have H&R race with Bil' Sports and my front appears to be quite a bit lower, and i have stock FSM.

[E turd]

I've got Bridgestone Potenza RE-01 R's in 195/50/15


There is a chance I could have effed something up during install. I followed the protocol outlined in the Bentley, but with springs being so much shorter and no install instructions for the camber plates I could have missed or overlooked something.

[whodwho]

Turn the bearing plates around 180*, they are offset to one side from center.

[E turd]

Turn the bearing plates around 180*, they are offset to one side from center.

Thank you, sir. I'll do that ASAP!

[z31maniac]

Sorry, I miss understood your post.

[Philo]

Well your tires are undersized. So that makes up for some of the look. But the Plates should have a shorter stack height than stock FSM. Also make sure your springs are sitting on the pads/perches correctly.