Rotor Replacement

Galligher · 03-22-2001, 08:58 AM

My 91 is doing the front end shimmy when braking. I bought the car 2 months ago. I am almost positve it's warped rotors. Anyway, I am of the mindset of doinging it right the first time. I don't plan on auto-Xing so I don't need brembo or cobra brakes. I am looking at the slotted rotors. I see Summit sells one and others are for sale in the mags (Power Slot). Any experience? Anyone... Bueller... Bueller...
Thanks,
Brian

84_GT350 · 03-22-2001, 03:40 PM

Just about every place that sells rotors for Mustangs sells a slotted or drilled rotor option. Even JC Whitney sells them for gawd sakes. Your rotors aren't going to make a big difference in stopping power anyhow (one companies slotted rotors probably don't differ too much from another's)...it's all about the pads. Find some good Hawk pads or something comparable and you should be happy. Stainless steel lines and caliper bushings will be a big help too.

------------------
1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s

[This message has been edited by 84_GT350 (edited 03-22-2001).]

Galligher · 03-22-2001, 04:23 PM

My Concern was more about longevity. I am scared to buy a rotor at most parts stores (deal with the crap I am now) and for what Ford probably wants ( I have not checked yet) I can get slotted ones. Unless anyone knows of a good brand to buy or a place to get non slotted rotors. I have owned many cars that wobble after a while due to warped rotors. IT'S TIME TO STOP THE MADNESS!!! (just thought I would add that for dramatic effects).
Thanks,
Brian

vande97 · 03-22-2001, 07:25 PM

hey galligher does the car shimmy at high speeds when the brakes are NOT being applyed?
are they that warped because i think mine are

Galligher · 03-24-2001, 11:27 AM

Mine does not wobble too much at high speeds. I think your problem may a tire or balance.

MTU 50 · 03-24-2001, 05:27 PM

I have the same quetion about rotors too seeing as mine are out of tolerance and cannot be turned anymore.

------------------
1991 GT, AOD, Moroso Cold Air, 3.73s, Pulleys, 3-chamber(the left one fell off-NO time+No Money=College), FMS c-springs, and KYBs

03-25-2001, 01:11 AM

The problem you'll face with slotted rotors and cross drilled rotors is that they can't be turned at all. If they warp or are scored, they're done unless you tolerate bad brakes, which is what you're trying to avoid. For street use you might as well just get regular rotors with good calipers, brake lines and good fluid (synthetic is even better). You're not going to be heating the brakes up enough to make them fade enough to effect performance with a good system (unless you drive REALLY HARD like an autocrosser). I'd go with solid rotors and save the money to go towards braided brake lines, stronger calipers, and synthetic fluid, etc. Just my $.02, good luck!

------------------
'84 Mustang 5.0 T5, FMS aluminum radiator & 180* thermostat, 1 5/8 shortys/2.5" duals, '88 GT tail lights and wheels, Holley 4160 4 BBL, smog pump idler, more coming soon

Chevyguy · 03-25-2001, 09:33 AM

Auto Zone sells rotors for $40.99 each with a 2 year warranty. I have had good luck with their brake parts in my daily driven cars. The Performance friction pads are 30.99, and are carbon metallic. I used those on my lumina and they stoppped great. They list "Z rated" pads at $49.99 special order, dunno anything about those.

------------------
Frank W
90 5.0 LX coupe Daily driver. Silencer removed, K&N filter. Flexalite fan, 3 core radiator. FMS flywheel and Clutch Finally rebuilt T-5.

74 Chevy Laguna Type S-3 305 apart in garage, getting a 454 to put next to it
www.chevellepages.com/folingo

03-22-2001, 08:58 AM	#1
Galligher Registered Member Join Date: Dec 1998 Location: Ft.Wayne, IN Posts: 12	Rotor Replacement My 91 is doing the front end shimmy when braking. I bought the car 2 months ago. I am almost positve it's warped rotors. Anyway, I am of the mindset of doinging it right the first time. I don't plan on auto-Xing so I don't need brembo or cobra brakes. I am looking at the slotted rotors. I see Summit sells one and others are for sale in the mags (Power Slot). Any experience? Anyone... Bueller... Bueller... Thanks, Brian

03-22-2001, 03:40 PM	#2
84_GT350 Registered Member Join Date: Apr 1999 Location: Overland Park, KS, USA Posts: 1,631	Just about every place that sells rotors for Mustangs sells a slotted or drilled rotor option. Even JC Whitney sells them for gawd sakes. Your rotors aren't going to make a big difference in stopping power anyhow (one companies slotted rotors probably don't differ too much from another's)...it's all about the pads. Find some good Hawk pads or something comparable and you should be happy. Stainless steel lines and caliper bushings will be a big help too. ------------------ 1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s [This message has been edited by 84_GT350 (edited 03-22-2001).]

03-22-2001, 04:23 PM	#3
Galligher Registered Member Join Date: Dec 1998 Location: Ft.Wayne, IN Posts: 12	My Concern was more about longevity. I am scared to buy a rotor at most parts stores (deal with the crap I am now) and for what Ford probably wants ( I have not checked yet) I can get slotted ones. Unless anyone knows of a good brand to buy or a place to get non slotted rotors. I have owned many cars that wobble after a while due to warped rotors. IT'S TIME TO STOP THE MADNESS!!! (just thought I would add that for dramatic effects). Thanks, Brian

03-22-2001, 07:25 PM	#4
vande97 Registered Member Join Date: Jan 2001 Location: okemos Posts: 205	hey galligher does the car shimmy at high speeds when the brakes are NOT being applyed? are they that warped because i think mine are

03-24-2001, 11:27 AM	#5
Galligher Registered Member Join Date: Dec 1998 Location: Ft.Wayne, IN Posts: 12	Mine does not wobble too much at high speeds. I think your problem may a tire or balance.

03-24-2001, 05:27 PM	#6
MTU 50 GOT TORQUE ???? Join Date: Aug 1999 Location: New Hudson, Michigan, USA Posts: 689	I have the same quetion about rotors too seeing as mine are out of tolerance and cannot be turned anymore. ------------------ 1991 GT, AOD, Moroso Cold Air, 3.73s, Pulleys, 3-chamber(the left one fell off-NO time+No Money=College), FMS c-springs, and KYBs

03-25-2001, 01:11 AM	#7
84stangLX Guest Posts: n/a	The problem you'll face with slotted rotors and cross drilled rotors is that they can't be turned at all. If they warp or are scored, they're done unless you tolerate bad brakes, which is what you're trying to avoid. For street use you might as well just get regular rotors with good calipers, brake lines and good fluid (synthetic is even better). You're not going to be heating the brakes up enough to make them fade enough to effect performance with a good system (unless you drive REALLY HARD like an autocrosser). I'd go with solid rotors and save the money to go towards braided brake lines, stronger calipers, and synthetic fluid, etc. Just my $.02, good luck! ------------------ '84 Mustang 5.0 T5, FMS aluminum radiator & 180* thermostat, 1 5/8 shortys/2.5" duals, '88 GT tail lights and wheels, Holley 4160 4 BBL, smog pump idler, more coming soon

03-25-2001, 09:33 AM	#8
Chevyguy Backyard Mechanic/Chemist Join Date: Feb 2001 Location: Acton MA USA Posts: 435	Auto Zone sells rotors for $40.99 each with a 2 year warranty. I have had good luck with their brake parts in my daily driven cars. The Performance friction pads are 30.99, and are carbon metallic. I used those on my lumina and they stoppped great. They list "Z rated" pads at $49.99 special order, dunno anything about those. ------------------ Frank W 90 5.0 LX coupe Daily driver. Silencer removed, K&N filter. Flexalite fan, 3 core radiator. FMS flywheel and Clutch Finally rebuilt T-5. 74 Chevy Laguna Type S-3 305 apart in garage, getting a 454 to put next to it www.chevellepages.com/folingo