Replacing warped front rotor. Is this what I need? (Page 3/6)
Dennis LaGrua JUL 30, 08:55 AM
Warping is often caused by heat and the sudden application of cold on untreated rotors. I am a big proponent of heat treating rotors before installing them. Years back all brake rotors were heat treated, but now with the flood of Chinese product this is probably not the case.
About 30 minutes in an oven at 400* is what I use to heat treat my rotors and prepare them for installation. With heat treating I have never had a problem with rotors warping or disc life.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

Knight Rider JUL 30, 11:10 AM
How about doing a Grand Am front brake upgrade.

[This message has been edited by Knight Rider (edited 07-30-2020).]

Cliff Pennock JUL 30, 12:32 PM

quote
Originally posted by Knight Rider:

How about doing a Grand Am front brake upgrade.




If that's a road-side job that can be done in a reasonable amount of time, I'm all for it, since I can't seem to find these rotors anywhere in Europe...
Cliff Pennock JUL 30, 12:36 PM
I just checked RockAuto and shipping really isn't all that bad, only $23 or so.

But there are a number of brands I can choose from and since I have no experience with any of those brands, is somebody willing to check RockAuto for me and tell me which part numbers I need?

I need one rotor, inner wheel bearing, outer wheel bearing, wheel bearing seal and a cotter pin.
Dennis LaGrua AUG 01, 09:50 AM

quote
Originally posted by Cliff Pennock:

I just checked RockAuto and shipping really isn't all that bad, only $23 or so.

But there are a number of brands I can choose from and since I have no experience with any of those brands, is somebody willing to check RockAuto for me and tell me which part numbers I need?

I need one rotor, inner wheel bearing, outer wheel bearing, wheel bearing seal and a cotter pin.



Front Wheel bearings for the Fiero are standard tapered roller bearings that are available all over the world at any bearing or power equipment supply house. The seal is National 3357
Front Inner Wheel Bearing. Industry standard P/N L44649/L44610 This is the inner and outer P/N's set
Front Outer Wheel bearing Industry standard P/N L11749/L11710
Cotter pins are very standard hardware parts available at any auto store.
For front brake rotors Bendix (PRT1286) , Raybestos (R5009R), Wagner (BD60726) and Centric (12162018) . They are all good. Many come with the seal.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

[This message has been edited by Dennis LaGrua (edited 08-01-2020).]

PK AUG 01, 01:34 PM
You will need to change both front discs (and any other brake components) to follow good practice.
steve308 AUG 01, 05:08 PM
RWDPLZ AUG 03, 11:11 PM
Probably a good idea to do front pads and both rotors, depending how old/worn what's on there is?

From Rock Auto's site,

Front pads Raybestos PGD261M
Front Rotor Raybestos 5009R
Inner wheel bearing Timken SET4
Outer wheel bearing Timken SET1
(Timken makes great bearings, they're all I use when they're available, I have these on my Fiero)
Wheel seal Timken 3357

The cotter pin you can get locally, nothing special about it, auto parts store or hardware store.
Lou6t4gto AUG 04, 04:42 PM
just take your old rotor in and have it "TURNED"
theogre AUG 05, 12:03 AM
GA "Upgrade" often will Not pass EU car inspections for same or different reasons as some cover in my cave in many member countries.
UK MOT and many others are far more strict then most of US state inspections and many are getting or recently gotten harder to pass. Like UK MOT updated their rules in spring of 2019 and can Fail for more issues/problems.


quote
Originally posted by Lou6t4gto:
just take your old rotor in and have it "TURNED"

That only works when the rotors meet some rules to start w/.
Many Fronts Rotors, and not just Fiero ones, have worn or warped to much to "turn" to be above the "machine to" limit.
See my Cave, Brake Rotors Spec