KVR rotor problems
February-25th-2002, 07:21 PM
#1
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KVR rotor problems
Hay Proteges,
Installed some KVR cross-drilled front rotors and Carbon Fiber pads Sunday. Everything went as usual when changing pads and rotors I've done it a 100 times till I drove out of the garage for the first burn in. Got 100 feet from the garage went to apply the brakes for the first time and it was like I had severe arthritis! The brake pedal was up and down like a skier’s knee in double black diamond moguls. Damn warped rotors but their band freaking new. Took off the rotors and got the digital calipers to check them sure enough warped like a record left in the back of a car window in Arizona in August. That sucks since they cost me $150.00 and I waited like two months for them. Since the rotors are crossed drilled no chance in hell I can find anybody willing to trash their bits turning (grinding smooth) the rotors down. The rotors are to warped to turn down anyway. Any-who anybody else out there had bad luck with KVR products? I should have checked them before I installed them but hell they where brand new. The KVR CF pads are great though I reinstalled my OEM rotors and the pads do work a little better than OEM pads. One more thing to mention I got them gold platted which didn't last though the first application of the brakes where the pads contacted the rotors. Ben at Cork Sport is calling KVR and hopefully they exchange them. Past a reply if you’ve had a similar experience with KVR or cross-drilled rotors.
Thanks
Installed some KVR cross-drilled front rotors and Carbon Fiber pads Sunday. Everything went as usual when changing pads and rotors I've done it a 100 times till I drove out of the garage for the first burn in. Got 100 feet from the garage went to apply the brakes for the first time and it was like I had severe arthritis! The brake pedal was up and down like a skier’s knee in double black diamond moguls. Damn warped rotors but their band freaking new. Took off the rotors and got the digital calipers to check them sure enough warped like a record left in the back of a car window in Arizona in August. That sucks since they cost me $150.00 and I waited like two months for them. Since the rotors are crossed drilled no chance in hell I can find anybody willing to trash their bits turning (grinding smooth) the rotors down. The rotors are to warped to turn down anyway. Any-who anybody else out there had bad luck with KVR products? I should have checked them before I installed them but hell they where brand new. The KVR CF pads are great though I reinstalled my OEM rotors and the pads do work a little better than OEM pads. One more thing to mention I got them gold platted which didn't last though the first application of the brakes where the pads contacted the rotors. Ben at Cork Sport is calling KVR and hopefully they exchange them. Past a reply if you’ve had a similar experience with KVR or cross-drilled rotors.
Thanks
February-25th-2002, 11:46 PM
#3
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Location: Evanston, IL
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Brembo only makes stock replacement rotors for the 3rd gens. Edwin, that link you posted looks like the first gen rotors, ours are different. The only place I know of that gets the stock replacement Brembos slotted and cross drilled is Import Performance. http://www.idperformance.com/
February-26th-2002, 07:45 AM
#4
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EricF thanks and Suggestions or Ideas
Thanks for the link didn't even know these guys existed. Seems like every week I find a new source for performance parts for our cars. Wish I could find someone that had Mazdaspeed cams for a 99-00 1.6L? Mazdaspeed made them in 00' and that was it. Any-who from now on I'm putting the word out on the boards that I'm looking for a certain part and see what you guys come up with. Maybe we need a parts section listing a certain part and who has it, at what price, and availability? I know the 3gen Eclipse DSM guys have a excellent reference section for parts on their forum when I'm looking for something.
Looks like I might be out $150.00 for those KVRs. I got my hands on an electronic digital outside micrometer so I'm going to compare the KVR rotors to the OEMs tonight. I'm wondering if they just don't set right on the hub. I did notice when tightening the lugs nuts up, the rotors didn't tighten up against the hub until about the last turn of the lug nut before it seated. I used a regular racket and not the air tools so that I was sure to torque the lugs evenly as I have always done when first installing new rotors. If the rotors center section if off by <.5 of mm and not as think causing the wheel not to push it up on the hub tight enough it would probably wobble when the brakes are applied causing the warped filling with a pulsating brake pedal. You wouldn't be able to feel the rotor being loose by pull or pushing by hand but under braking you'd defiantly feel it.
I've had this problem on bikes with hydraulic brakes with the spacing of the hub in relation to the rotor and caliper. Maybe a some sort of spacer between the rotor and wheel is what’s needed? If the rotor’s material is thinner in the center where it mounts maybe the lugs are not deep enough to push the wheel and rotor tight on the hub, but wouldn’t one feel something in the steering also? Well any suggestion or ideas is appreciated? I verified the P/N on the KVR’s to be sure I got the right ones, only on had the part number scribed on the out side edge of the rotor. The KVR’s had the min. thick number on the center and two other number that did not match anything I could find as far a P/N#. I’ll probably be ordering the Brembo’s since I’ve gotten three confirmations and recommendations on fit and function.
Again Thanks
Looks like I might be out $150.00 for those KVRs. I got my hands on an electronic digital outside micrometer so I'm going to compare the KVR rotors to the OEMs tonight. I'm wondering if they just don't set right on the hub. I did notice when tightening the lugs nuts up, the rotors didn't tighten up against the hub until about the last turn of the lug nut before it seated. I used a regular racket and not the air tools so that I was sure to torque the lugs evenly as I have always done when first installing new rotors. If the rotors center section if off by <.5 of mm and not as think causing the wheel not to push it up on the hub tight enough it would probably wobble when the brakes are applied causing the warped filling with a pulsating brake pedal. You wouldn't be able to feel the rotor being loose by pull or pushing by hand but under braking you'd defiantly feel it.
I've had this problem on bikes with hydraulic brakes with the spacing of the hub in relation to the rotor and caliper. Maybe a some sort of spacer between the rotor and wheel is what’s needed? If the rotor’s material is thinner in the center where it mounts maybe the lugs are not deep enough to push the wheel and rotor tight on the hub, but wouldn’t one feel something in the steering also? Well any suggestion or ideas is appreciated? I verified the P/N on the KVR’s to be sure I got the right ones, only on had the part number scribed on the out side edge of the rotor. The KVR’s had the min. thick number on the center and two other number that did not match anything I could find as far a P/N#. I’ll probably be ordering the Brembo’s since I’ve gotten three confirmations and recommendations on fit and function.
Again Thanks
February-26th-2002, 01:11 PM
#5
Protege God
Join Date: Sep 2001
Location: Evanston, IL
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It sounds like you know what to look for as far as the KVR rotors go. Any one of the other causes you mentioned could contribute to them appearing warped. You would only feel it through the steering if the problem was fairly extreme. Personally, If I bought new rotors for $150 and they were warped, I wouldn't take no for an answer. If you're sure you didn't do anything to cause the problem, I'd talk to the owner of Corksport, and to people at KVR and explain the situation. They are both in business to make a profit, and negative word of mouth advertising can really hurt that. Especially with all these Internet groups. News of your problem is already being referred to in other threads. Couldn't hurt to point that out, if necessary.
Did you use a torque wrench to tighten the wheels? I assume you have alloy wheels. I always use a torque wrench to tighten my wheels. I use about 70 ft/lbs for alloy wheels. Tighten in a cross hatch pattern, not more than a full turn on each lug after they get hand snug to the wheel. I use the air compressor mostly to remove things.
The Brembo rotors are OEM replacements. They are readily available, and Autospecialties (Powerslot rotors) will make a cross drilled and/or slotted application for us 4x100mm Pro owners with a minimum 5 orders. They should be cadmium plated for around $90 to $100 ea. depending on the size of the order. The Cadmium plating does wear of the braking surface quickly, but the pads keep that area from rusting. I have the Brembo part number, and Autospecialties info at home if anyone's interested.
Did you use a torque wrench to tighten the wheels? I assume you have alloy wheels. I always use a torque wrench to tighten my wheels. I use about 70 ft/lbs for alloy wheels. Tighten in a cross hatch pattern, not more than a full turn on each lug after they get hand snug to the wheel. I use the air compressor mostly to remove things.
The Brembo rotors are OEM replacements. They are readily available, and Autospecialties (Powerslot rotors) will make a cross drilled and/or slotted application for us 4x100mm Pro owners with a minimum 5 orders. They should be cadmium plated for around $90 to $100 ea. depending on the size of the order. The Cadmium plating does wear of the braking surface quickly, but the pads keep that area from rusting. I have the Brembo part number, and Autospecialties info at home if anyone's interested.
February-26th-2002, 02:32 PM
#6
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Join Date: Nov 2001
Location: Newfoundland, Canada
Posts: 1,010
No one mentioned STOPTECH. they've got a complete conversion for our Pro's. Check out their site:
http://www.stoptech.com/cgi/Products..._listings_to=0
Scroll down to Protege.
EDIT: Oh eheh. Didn't realize you were only interested in stock replacements.
http://www.stoptech.com/cgi/Products..._listings_to=0
Scroll down to Protege.
EDIT: Oh eheh. Didn't realize you were only interested in stock replacements.
February-27th-2002, 06:37 AM
#10
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Join Date: Oct 2001
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Update on KVR Rotors
Hay Protégés,
Ben from Cork Sport called me back yesterday and after talking to KVR in Canada, they said to just send them back and they will take care of it. I'll probably still get the Brembo's though. I went to check the warped-ness of the rotors with a micrometer but the dam battery was dead. I'm going out to Radio Shack at lunch and get a new one so I can measure the rotors to night. As far as all the other dimensions of the KVR rotors they are pretty much the same OEM ones.
Eric F, you've listed two different sources for the Brembos who is better or cheaper and a reliable source? Also I noticed on the Import Performance site the Brembo cross drilled/slotted rotors for 99-00 Pros have five lugs, we have four um. I'll try and call both this afternoon and confirm fitment, availability, and price.
And yes I used a toque wrench to toque all the lugs to spec. in a cross pattern, especially since I have alloy rims.
Later
Ben from Cork Sport called me back yesterday and after talking to KVR in Canada, they said to just send them back and they will take care of it. I'll probably still get the Brembo's though. I went to check the warped-ness of the rotors with a micrometer but the dam battery was dead. I'm going out to Radio Shack at lunch and get a new one so I can measure the rotors to night. As far as all the other dimensions of the KVR rotors they are pretty much the same OEM ones.
Eric F, you've listed two different sources for the Brembos who is better or cheaper and a reliable source? Also I noticed on the Import Performance site the Brembo cross drilled/slotted rotors for 99-00 Pros have five lugs, we have four um. I'll try and call both this afternoon and confirm fitment, availability, and price.
And yes I used a toque wrench to toque all the lugs to spec. in a cross pattern, especially since I have alloy rims.
Later
February-27th-2002, 01:28 PM
#11
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Location: Evanston, IL
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To clarify, Brembo only makes OEM replacement rotors for the Protege. Import Performance is the only place I'm aware of who is getting Brembo's OEM rotors cross drilled and slotted by a machine shop, and then selling them on the website. I can't vouch for the quality of the machine shops work since I haven't purchased the rotors. The picture on Import Performance's website is generic. I emailed Jason to verify he has the correct fitment for the '99-'00 ES with 4x100mm bolt pattern. He has both the 4x100 and 5x4.5" applications.
I mentioned that Autospecialties, the maker of Powerslot rotors , has the same Brembo OEM replacement rotors in case Mitch (Protege5online), or Rishie (ARD performance), were interested in getting a Powerslot application created for our 4x100mm rotors. Currently, Powerslot does not make any rotors for us, although Autospecialties carries the OEM replacement Brembo rotors. Powerslot rotors should be Cadmium plated and $100ea or less if they were to produce them. I think that would be a better value than the non Cadmium plated custom cross drilled and slotted rotors Import Performance sells for $125ea. Just my $0.02.
I mentioned that Autospecialties, the maker of Powerslot rotors , has the same Brembo OEM replacement rotors in case Mitch (Protege5online), or Rishie (ARD performance), were interested in getting a Powerslot application created for our 4x100mm rotors. Currently, Powerslot does not make any rotors for us, although Autospecialties carries the OEM replacement Brembo rotors. Powerslot rotors should be Cadmium plated and $100ea or less if they were to produce them. I think that would be a better value than the non Cadmium plated custom cross drilled and slotted rotors Import Performance sells for $125ea. Just my $0.02.
February-27th-2002, 01:42 PM
#12
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Thanks
A group rotor buy would be cool, but I’m not one that wants to start that up.
Another option I guess would be to get the calpier mounting brakets from AWR and then I'd have more choices in rotors and calpiers. But on the other hand thats a lot of work and money let someone esle be first on that one. Speaking of AWR have you heard anything from or about AWR’s front and rear poly motor mounts? What will they fit 00-00 or 01-02 what's the cost etc. Man would that be sweet, my motor hoops around so bad you can hear the intake manifold hit the strut bar. I e-mailed them last week no response yet.
I know Rishie had mentioned he was working something with Energy Suspension. Don't know the status of that yet either.
Later
Another option I guess would be to get the calpier mounting brakets from AWR and then I'd have more choices in rotors and calpiers. But on the other hand thats a lot of work and money let someone esle be first on that one. Speaking of AWR have you heard anything from or about AWR’s front and rear poly motor mounts? What will they fit 00-00 or 01-02 what's the cost etc. Man would that be sweet, my motor hoops around so bad you can hear the intake manifold hit the strut bar. I e-mailed them last week no response yet.
I know Rishie had mentioned he was working something with Energy Suspension. Don't know the status of that yet either.
Later
December-1st-2002, 04:53 PM
#13
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What about crossdrilling the OEM rotors (stock ones on the car?)... I'm getting my brakes done, and was comtemplating getting the rotors, and throwing them on my CNC machine, and cross drilling them?
December-1st-2002, 05:21 PM
#14
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Originally posted by TheMAN
uhhh no
uhhh no
Why no? Sparkcoonline.com sells Mazda OEM rotors that are crossdrilled.
http://www.sparkcoonline.com/product...=12&PHPSESSID=
Obviously all the holes would be chamfered so they would not to rip apart the pads..
December-1st-2002, 07:21 PM
#15
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Originally posted by TheMAN
just because a company like "sparkco" is selling "oem" rotors that were drilled doesn't mean they're good nor safe.
let me tell you this... all this bullshit about cross drilled or slotted rotors doing any damn thing for braking is a MYTH.
answers... click on the search button and you will find quite a few big threads about the issue
just because a company like "sparkco" is selling "oem" rotors that were drilled doesn't mean they're good nor safe.
let me tell you this... all this bullshit about cross drilled or slotted rotors doing any damn thing for braking is a MYTH.
answers... click on the search button and you will find quite a few big threads about the issue
I know they don't do much for braking in our cars. Lots of people think that slotted/cross drilled are to keep the rotors cool. That may be so, but that was not what they were designed for. They are designed to get the BRAKE DUST out of there.
I remember when I first got my car, the dust was nasty, and since I'm getting new pads, I had cleaning the tires/rims all the time, so I wanted to cross drill them, also for the look as well.