84-87 12" Corvette Brake Swap... (Page 9/28)
1986GTV8 FEB 20, 12:10 PM
A bump for 87GTBro
kru FEB 23, 12:46 AM
This is an EXCELLENT thread. There are a couple other good threads as well. I have read and re-read them many times. I'm certainly not trying to knock any of them, but I do feel like a more complete parts/advice document is in order. Something that can be printed out for parts sourcing, if nothing else.

I spent the last couple hours putting together the following document regarding this brake upgrade. There are still several question marks that I would like to fill in, so if anyone can supply the answers, that would be great. I'd especially like to hear from some of you who have performed this upgrade. Especially if I've got anything wrong here. I'd like to update this document and have it available for people wanting to undertake this project. (Even though its not car radio related, I may even find a place to 'hide' it on my website: www.ReplacementRadios.com )

I think this particular thread is the best 'build' thread I've seen, so I don't plan to go into the step by step build process but, rather, provide a more complete parts list, some brief highlights (and possible hang-ups), as well as some links to this thread and other sites of relative interest.

I've got this saved as a Word document if anyone wants it. (Yep. I can be pretty anal sometimes.) Here goes...

**************************Start of document***************************

First, keep in mind that I have not yet performed this swap, so I can't speak for the performance or safety results. In other words, just like me, you should be performing this upgrade at your own risk. This document is just a compilation of information found in various places regarding this project.

Estimated total cost = @ $800, assuming mostly new or rebuilt parts (Detailed below.)

Parts list:

New 1988-96 Corvette 12” rotors (front for front, rear for rear) Try eBay for variety.
New Fiero Store stainless steel brake lines
New 1967-80 Corvette master cylinder (Try Rock Auto for good prices.)
Qty 4: New 10mm x 1 banjo bolts (Most auto stores.)
1984–87 Corvette front calipers (O’Reilly's reman #s: 18-4183 & 18-4184)
1984–87 Corvette front brackets (GM discontinued. Part#? Try Arts Corvette for used.)
*1988–96 Corvette rear calipers for e-brake*. (O’Reilly's reman #s 18-4323 & 18-4324)
*1988–96 Corvette rear brackets (GM# 10112652. EYE12652 at Arts) for 88-96 caliper
Alternative for rear: 1984–87 Corvette rear calipers for no e-brake (Part #s ??)
Alternative for rear: 1984–87 Corvette rear brackets for 84-87 caliper (Part #s ??)
Adapters & concentric rings. See bubbajoe’s site for specs or Cheetah’s site to order.
Qty 10: Long wheel stud. Front (Rear optional) Dorman 610-323. Advance Auto 98501
Qty 8: 12M 1.75 x 30mm hex head cap screws for front. (Hardware/fastener store)
Qty 8: 12M 1.75 x 20mm hex head cap screws for rear. (Hardware/fastener store)
New brake tubing (diameter or length ??)
Hubs (Original 84-87 Fiero rotors with the ‘disc’ portion ‘turned’ off.)
New brake pads of your choice for the calipers you selected.

‘Special’ Tools needed:

tubing bender
flare tool
12M 1.75 tap
grinder
hex bit/socket for caliper pins (size?)
A 'real' jack
jackstands

‘Special’ Instructions/Notes:

Rear spindles will need drilled and tapped to 12M 1.75 (Front already 12M 1.75?)
Grind off small ‘ear’ on front edge of rear spindles.
Have Corvette rotors drilled for 5x100 bolt pattern
Custom bend and flare brake lines. (Re-use existing fittings.)
Make custom e-brake 'loop' if you use 88-96 rear calipers and want e-brake.
It’s probably a good idea to replace bearings and seals while you have everything apart.
High-temp paint recommended for calipers. (Tape off pistons first.)
Minimum wheel size is 16". (Although some 16s may have clearance problems.)
May not be compatible w/ custom tubular control arms.
For 1984 to 1987 Fieros only. (Base, SE or GT.)

Links:

Bubbajoe’s website = http://members.fortunecity.com/bubbajoexx/id215.htm
Art’s Corvette website = www.artscorvetteparts.com
Fiero Store website = www.fierostore.com
Rock Auto website = www.rockauto.com
Cheetah’s website = http://www.cheetahonline.com/j3030.html
Excellent ‘build’ thread = http://www.fiero.nl/forum/Forum2/HTML/063914.html
Informative Pennock’s thread = http://www.fiero.nl/forum/Forum2/HTML/061483.html
Great factory/OEM CD car radios = www.replacementradios.com (Couldn't resist )

-Kevin

[This message has been edited by kru (edited 02-23-2006).]

northeastfiero FEB 24, 09:17 AM
Have already tried but no harm in trying again.
Does any one have or able to get the front and rear caliper brackets Arts Corvette doesnt stock them any more.
This is all that I need to get started on my swap
Thanks Carl.
fiero go fast FEB 24, 01:22 PM
What I did to get all of the parts fairly cheap was to join a corvette forum and just post in their for sale section. Within 2 weeks I had all the parts I needed. All of them were used, but I got lucky and found everything with under 30,000 miles on it. I would try there. Just do a google search. You can also get the brackets you're looking for quite a bit cheaper. Front (84-87) and rear calipers (88-96) with brackets I don't think I payed over $150. Worth a shot.

Matt

[This message has been edited by fiero go fast (edited 02-24-2006).]

87GTBro FEB 26, 02:31 PM
I began installing this brake upgrade and ran in to a problem with the front brakes. I had the brake adapters machined to bubbajoes exact specs. While test fitting the adapters and calipers I found that the banjo bolt on the caliper hits the lower part of the shock before the steering rack hits the end of its travel... Did anyone else complain of having this problem? The steering radius of the Fiero already sucks as it is. I don't want to sacrifice any more.

-------------------
Nevermind.... fatigue is affecting my brain function. The clearance is perfect with a compressed suspension! Reminder though.... make sure your wheel is straight when you jack up the car....

[This message has been edited by 87GTBro (edited 02-26-2006).]

Custom84cp FEB 26, 09:23 PM

quote
Originally posted by 87GTBro:

I began installing this brake upgrade and ran in to a problem with the front brakes. I had the brake adapters machined to bubbajoes exact specs. While test fitting the adapters and calipers I found that the banjo bolt on the caliper hits the lower part of the shock before the steering rack hits the end of its travel... Did anyone else complain of having this problem? The steering radius of the Fiero already sucks as it is. I don't want to sacrifice any more.


This is just a guess, but it sounds like you have the calipers on the wrong sides (left on right, right on left). The banjo bolts should be at the top of the caliper not at the bottom.
Hope this helps.. Steve

HellYes MAR 04, 07:07 PM
Rear adapter

This drawing is incomplete. Anyone have the rest of the dimensions?

One if these 2 dimensions are needed to make a part from this print.

Unltd1 MAR 04, 08:32 PM

quote
Originally posted by HellYes:
Rear adapter

This drawing is incomplete. Anyone have the rest of the dimensions?

One if these 2 dimensions are needed to make a part from this print.


The drawing is complete... at least to my eye... the centerline is drawn... 3.5625... so the complete dimension is
7.125

hope that helps you

-Darius

HellYes MAR 04, 10:33 PM
The part is not symetrical, so I cannot assume a center line that is not properly noted as center line is correct. The line is not dashed, does not extend through to the other sde, and is not noted CL. Just making sure I am not paying to have junk made. Cautious Stainless is not cheap.

[This message has been edited by HellYes (edited 03-04-2006).]

Unltd1 MAR 05, 01:05 AM
I think the part is symetrical, the only thing that is not is the location of the holes...
I agree it would be nice if the centerline had been chain dotted... but from every other outer dimension on it... it looks symmetrical to me...
have you tried emailing/pm-ing cheetah to ask him... since he had some of these made... (I'm assuming from the same drawing)

(also I must apologize, I just now read that someone else's post having given the measurements the same....sorry to have duplicated..)

here is a bump up for you to get a more satisfactorial answer.

-Darius