84-87 12" Corvette Brake Swap... (Page 15/28)
typhoon FEB 22, 04:32 PM
Front and rear rotors should both be 12 inches in diameter. If you have the bigger front rotors they are wrong. The larger rotor is for the J55 option heavy duty and are the larger rotor.
3.8 SC FEB 22, 05:56 PM
I don't know if anyone else has ran into this problem or not. I made my parts, to the prints, found here, on the forum. Everything is fine, accept the front caliper adapters. The prints say to make them .875" thick. I did that and it held the rotor off the hub, when I tried to assemble the brakes. I machined it to .725 and it is still hitting the back of the rotor, but the rotor can spin now. Am I missing something or is the print wrong? I still need to machine another .050" off the adapter to center the caliper bracket over the rotor. I did grind the spindle flat as Bubba Joe says to do.

Don Z.

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WWW.CLEVELANDFIEROS.COM


My rear defuser

A hint -

It's finally in the paint shop! Will be out in spring!

bobm FEB 24, 03:41 PM
Any have a phone number for Cheetah.

I placed an order back o the 14th and haven't had any contact since???
RUNDLC MAR 06, 07:21 PM
Has anyone else used the 67-80 MC and not had to change the lines?? I was told by a friend that there were no mods needed on this setup. I am just looking for others that have used this MC.

Thanks

RUNDLC
pokeyfiero MAR 09, 01:59 AM
Bump cause I need this thread close.
Jncomutt MAR 09, 11:27 AM

quote
Originally posted by RUNDLC:

Has anyone else used the 67-80 MC and not had to change the lines?? I was told by a friend that there were no mods needed on this setup. I am just looking for others that have used this MC.



We had to make new lines, others have said they switched lines and got them to work with some gentle finesse.
Jncomutt MAR 09, 11:28 AM

quote
Originally posted by 3.8 SC:

I don't know if anyone else has ran into this problem or not. I made my parts, to the prints, found here, on the forum. Everything is fine, accept the front caliper adapters. The prints say to make them .875" thick. I did that and it held the rotor off the hub, when I tried to assemble the brakes. I machined it to .725 and it is still hitting the back of the rotor, but the rotor can spin now. Am I missing something or is the print wrong? I still need to machine another .050" off the adapter to center the caliper bracket over the rotor. I did grind the spindle flat as Bubba Joe says to do.



We had to use small washers to space the caliper adapter. If its the same issue as I'm thinking, I mentioned it earlier.
From Page 1:

quote
You can now position the preassembled assembly onto the spindle. You will need to check for clearances. When we put ours together, we found that the outer edge of the caliper adapter was rubbing against the rotor. We fixed this by installing washers between the spindle and the mounting bracket. We used blue locktite, and tightened everything down once we were satisfied with fitment.

[This message has been edited by Jncomutt (edited 03-09-2007).]

1986GTV8 MAR 11, 04:18 PM
BUMP
RUNDLC MAR 28, 10:42 PM
Well I am going to need to redo the small lines from porporting valve to 80 corvette m.c.
I was hoping not to have to remake them, but you know the old saying!! What does it take to actually
make lines? I will need to find the two fittings that fit the vette m.c. the 85 fiero ones WILL NOT BOLT up
I don't care how careful you are.

Any advice on doing this small task would be helpful.


RUNDLC
brandon87gt MAR 28, 11:56 PM
I am collecting parts for this upgrade and noticed that the hub didn't stick out much past the rotor after it was put on, will it not contact the wheel at all? I thought it may still some. I would rather not have the wheel centered by the lug nuts. Any way to remedy this?


quote
Originally posted by Will:


Incorrect.
From the factory, the wheels DO center on the hub pilot.
Using brake upgrades with separate rotors does indeed reduce the length of the protrusion such that the wheels no longer contact it.
After doing the upgrade, the wheel is then centered by the lug nuts. This is NOT the same and is NOT as good as a positive location via pilot & bore.
However, this seems to be "good enough" that people don't have any problems with it.

I think it's sloppy and one of the major problems with Fiero brake upgrades. Would you trust that the lug studs locate the wheel well enough that it won't shake you into a crash at 150+ mph?