Warped rotors

mikeddodgers · 10-27-2009, 10:23 PM

When I brake I it feels like the brake rotors are warped. I changed the front brakes completely and had all the tires balanced and rotated but still the feeling of warped brakes remain. Any suggestions of what it could be?

Thanks for your help.
Mike

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wolfrunner · 10-27-2009, 10:37 PM

mike the runner your driving is notorious for having warped rotors. you could have them machined and that would help for a little while but it will come back. try to find slotted rotors or drilled to help the problem. also adj your rear brakes so your drums are helping brake. most of the time toyota's will pulsate due to the rear brakes not being used very much.

Elton · 10-27-2009, 10:42 PM

i got some ebc rotors on order for mine they where 30ea plus shipping found them on ebay from what i read drilled or slotted dont help much

wolfrunner · 10-27-2009, 10:46 PM

yeah slotted will help get rid of the gas that is made when you brake. plus rotors like power slots are made with a coating that helps them last longer

mikeddodgers · 10-29-2009, 11:08 PM

Sorry fellas, I was out hunting and couldn't back to my computer to reply.

So here is the thing.....I noticed the "warped" feeling immediately after I changed the rotors. I felt it the first time I drove them.

Gnarly4X · 10-30-2009, 06:15 AM

Quote:

Originally Posted by wolfrunner

mike the runner your driving is notorious for having warped rotors. you could have them machined and that would help for a little while but it will come back. try to find slotted rotors or drilled to help the problem. also adj your rear brakes so your drums are helping brake. most of the time toyota's will pulsate due to the rear brakes not being used very much.

Well, I have to respectfully disagree with some of your comments.

First, I've never heard of any Runner owner's saying they are "notorious" for having this problem. Secondly, putting slotted or drilled rotors on an off-road vehicle is just plain stupid, and can be dangerous. Rocks, mud, sand, snow, ice, water, that can get into the holes and slots can cause major loss of braking power.

Warping is caused by excess heat. You can install organic pads which will a lot to reduce the tendency to warp.

Rear brakes "pulsating" due to "not being used very much"???? That's a new one on me!!.... utter non-sense.

Now... adjusting the "rear brakes so your drums are helping brake".... makes perfect sense, except you have to do that with either the proportioning valve adjustment, or a separate porportioning valve like a Wilwood. I adjusted my truck proportioning valve so the rear drums are getting a tad more pressure and it does improve the overall braking, plus it's better for off-roading, especially when you are attempting a climb and the vehicle weight transfers to the rear end.

If your front rotors are warped, having them resurfaced may help for awhile or it may completely cure the problem. On my Toyotas I just replace them with a good quality new rotor if they are warped and causing the brake pedal to pulsate and usually steering wheel wobble during braking.

That's just my worthless opinion.

gNARLS.

badattitude · 10-30-2009, 07:01 AM

Anyone think the problem could be the steering rack bushing? Does your steering wheel also vibrate at hwy speed?

mikeddodgers · 10-30-2009, 06:06 PM

My steering wheel does vibrate between 70-75 miles per hour. I also adjusted the rear brakes so that they would take a little more of the braking load.

Again, thank you for all your suggestions.

Cal01 · 11-06-2009, 01:11 AM

warping can be caused from using power tool to tighten your wheel.

use hand.

10-27-2009, 10:37 PM	#2 (permalink)
wolfrunner Registered User Join Date: Jul 2008 Location: Graham, WA Posts: 93	mike the runner your driving is notorious for having warped rotors. you could have them machined and that would help for a little while but it will come back. try to find slotted rotors or drilled to help the problem. also adj your rear brakes so your drums are helping brake. most of the time toyota's will pulsate due to the rear brakes not being used very much. __________________ GET IN THE CHOPPER IF YOU WANT TO LIVE!!!!!!!!! 1993 runner bought stock 3.0 auto / as if 2-21-09 sas started / rear chev 63" leaf springs / TG rock sliders / bilstein 5150 14" shocks all around / 5.29's / 37x14.50x15 toyo m/t on 15x10 ultra 164 wheels / longfield super axles / trailgear rear bumper 1991 runner auto 3.0 blown head gaskets / as of 2-19-09 hg repaired / runner up for sale. $2500.00 obo swapping to a 3.4 ....priceless, ARE YOU KIDDING ME!!!! COSTS A TON!!!!

10-27-2009, 10:42 PM	#3 (permalink)
Elton Contributing Member Join Date: Jul 2005 Location: Siletz,Oregon Posts: 10,647	i got some ebc rotors on order for mine they where 30ea plus shipping found them on ebay from what i read drilled or slotted dont help much __________________ My Truck 98 4runner SR5 3.4L 5spd 4x4 E-Locker Mods Mom 07 Tundra d-cab limited 5.7L 4x4 auto sister 92 pickup SR5 X-cab 3.0L 5spd 4x4 Papa 89 Pickup SR5 X-cab 4x4 3.0L 5spd/98 4runner SR5 4x4 auto 3.4L R.I.P 91 4runner SR5 4x4 3.0L 5spd Totaled 5/13/06 My Wreck

10-27-2009, 10:46 PM	#4 (permalink)
wolfrunner Registered User Join Date: Jul 2008 Location: Graham, WA Posts: 93	yeah slotted will help get rid of the gas that is made when you brake. plus rotors like power slots are made with a coating that helps them last longer __________________ GET IN THE CHOPPER IF YOU WANT TO LIVE!!!!!!!!! 1993 runner bought stock 3.0 auto / as if 2-21-09 sas started / rear chev 63" leaf springs / TG rock sliders / bilstein 5150 14" shocks all around / 5.29's / 37x14.50x15 toyo m/t on 15x10 ultra 164 wheels / longfield super axles / trailgear rear bumper 1991 runner auto 3.0 blown head gaskets / as of 2-19-09 hg repaired / runner up for sale. $2500.00 obo swapping to a 3.4 ....priceless, ARE YOU KIDDING ME!!!! COSTS A TON!!!!

10-30-2009, 07:01 AM	#7 (permalink)
badattitude Registered User Join Date: Jun 2009 Location: Madison, WI Posts: 29	Anyone think the problem could be the steering rack bushing? Does your steering wheel also vibrate at hwy speed? __________________ 1999 Black 4Runner TRD exhaust deckplate mod, TRD air filter, Airaid MIT front discos

11-06-2009, 01:11 AM	#9 (permalink)
Cal01 Registered User Join Date: Oct 2009 Location: Lost Angeles Posts: 60	warping can be caused from using power tool to tighten your wheel. use hand. __________________ 97 SR5 5spd 4x4 wanted: White Drivers side Fender

10-29-2009, 11:08 PM	#5 (permalink)
mikeddodgers Registered User Join Date: Sep 2009 Posts: 7	Sorry fellas, I was out hunting and couldn't back to my computer to reply. So here is the thing.....I noticed the "warped" feeling immediately after I changed the rotors. I felt it the first time I drove them.

10-30-2009, 06:06 PM	#8 (permalink)
mikeddodgers Registered User Join Date: Sep 2009 Posts: 7	My steering wheel does vibrate between 70-75 miles per hour. I also adjusted the rear brakes so that they would take a little more of the braking load. Again, thank you for all your suggestions.

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