Cascade Crew

aaron_sK · Posted: Tue Aug 16, 2011 9:14 pm Post subject:

I wouldn't be quick to blame the a-arm or crossmember, the second shot Jon posted seems to absolve them.

I'd be looking at the new rotors. They are the only thing that changed between the two cars.

QwkTrip · Posted: Tue Aug 16, 2011 9:31 pm Post subject:

I found it. The spacing from the spindle mounts to where the wheel sits on the rotor is much more than stock. The SSBC rotors are same as the rotors that came with it. It's just the way the brake kit is made - it's going to move the wheel on any car. My guess is if somebody ran rear offset wheels on all four corners then it wouldn't be very noticeable. I have large tires up front. I just can't afford any movement to the outside or it gets real goofy real quick.

So I guess the next question is, what is a brake kit that won't move the wheel at all?

aaron_sK · Posted: Tue Aug 16, 2011 9:36 pm Post subject:

QwkTrip · Posted: Tue Aug 16, 2011 9:59 pm Post subject:

I found the root cause. Mystery is solved.

So back to the question earlier, what big brakes don't move the wheel? I need to find a solution and custom wheels are my least favorite idea.

I need good brakes but not Iansane brakes. Laughing

My car will trap around 130 MPH in the quarter. It needs to be able to stop well. 4th gen wheels with spacers is not an option and aren't allowed at the track anyway.

QwkTrip · Posted: Tue Aug 16, 2011 10:29 pm Post subject:

Something just dawned on me. It doesn't matter what kit I have, if it requires the hub mod then it's going to be the same problem. If I want to keep my wheels then the only thing I can do is use stock style brakes on stock spindles. Correct?

This is a quandary for me. I like my rims. The stuff that's made today for 3rd gens is just friggin ugly. I can't use 4th gen rims without spacers up front and a whole new rear axle. One option is to do a 15" drag wheel setup and put some real meat in the back. It just so happens that my new front springs are drag launch.

Got to go think about this one.

blue89 · Posted: Wed Aug 17, 2011 6:54 am Post subject:

If you modify a stock hub then the max the wheel moves out is the thickness of new motor mounting face. For me, that was a 1/4". What hubs did they use?

Twilightoptics · Posted: Wed Aug 17, 2011 8:13 am Post subject:

C4 HD uses a 1LE Hub.

IIRC C4 uses a stock hub.

I just put fronts on the rear and it all all evened out, made the car look and handle better. It really didn't seem to move out very far for me....

IROCDave · Posted: Wed Aug 17, 2011 10:02 am Post subject:

QwkTrip · Posted: Wed Aug 17, 2011 2:26 pm Post subject:

I found out that Wilwood makes a 11" and 12" kit that has zero offset from stock p/n 140-11012 and 140-11275, respectively. It uses stock hubs and you simply cut the ears off like 1LE. Not a terrible price either. This is good news.

iansane · Posted: Wed Aug 17, 2011 10:29 pm Post subject:

aaron_sK · Posted: Thu Aug 18, 2011 6:46 am Post subject:

Do you still have Paul's old rotors, or did you toss them? Those new rotors are the only unknown variable here.

Twilightoptics · Posted: Thu Aug 18, 2011 7:37 am Post subject:

Guys, it's the 1LE Hub. It doesn't push it out as far as 4th gen stuff, but it's about a 3/8" difference, plus the 1/4" of the rotor thickness.

Makes it about a half inch. Never even dawned on me since I did it so long ago. Ed originally told me to use a stock hub. It put the rotor off by 3/8" in the carrier. I went back through my emails.

Sorry Jon, I guess this is my mistake for not informing you. I never had fitment problems and my stock wheels/tires tucked in the fenders just fine and looked good.

I think you're aftermarket wheels may be extrapolating the issue aswell.

iansane · Posted: Thu Aug 18, 2011 8:49 am Post subject:

Crazy, didn't know there was that much of a difference in the hubs.

http://www.thirdgen.org/techboard/posts/brake-board/237436-13-c4-hds-installed/1804348-post20.html

Jon, I think the kit you have is about the only one that moves the wheel that far out which is why everyone was confused. My c5/c6 kit only moved it out the thickness of the rotor along with pretty much every other kit I've seen. Sorry bud.

QwkTrip · Posted: Thu Aug 18, 2011 4:14 pm Post subject:

That explanation makes sense. I think we solved it. Thanks for the help, guys!

I was disappointed to think that I have to sell it at a loss (new rotors and all) and start over with the unknown, but I think I'll put a 1/4" spacer on my stock setup and see where the tire lands. If it looks good then I'll probably convert my spindles and sell the 1LE spindles.

Twilightoptics · Posted: Thu Aug 18, 2011 5:17 pm Post subject:

nO NO NO NO.

Thirdgen spindles are thirdgen spindles.

1LE hub. Means the original rotor/hub assembly from a 1LE. The 1LE hub also uses slightly larger and stronger wheel bearings than the STD thirdgen stuff, but they both use the same spindle.

QwkTrip · Posted: Thu Aug 18, 2011 5:35 pm Post subject:

Ah! Okay.

I think the first thing for me to do is read up on how the conversion works. Very Happy

I have a friend at work with a machine shop in his garage. That should be the easy part and not cost anything.

QwkTrip · Posted: Thu Aug 18, 2011 6:02 pm Post subject:

Apparently you had no choice. The C4 HD system must use 1LE hubs.

http://www.lukeskaff.com/car/brakes/hub.html

Twilightoptics · Posted: Thu Aug 18, 2011 6:10 pm Post subject:

Cool writeup. Wasn't around when I did it LOL

redlava · Posted: Thu Aug 18, 2011 8:13 pm Post subject:

Could you maybe have the 5/8" milled off the back side of the two front rims?

QwkTrip · Posted: Fri Aug 19, 2011 4:34 am Post subject:

No, that would be suicide.