wilwood big brakes

[dansmith11]

so after install my big brakes, they didnt clear my current wheels, so i went and added some longer wheel studs and spacers to make it all fit, now i have about 4 mm clearance between my wheels and calipers, which is find rolling around, but under braking, they hit.

the wheel and caliper are all bolted to the same hub/steering knuckle and shouldnt be able to move independantly of each other. so what gives? any ideas?

 

[twinturbozs]

what makes you think they are hitting? if you have 4mm of clearance from the back of your wheel centers to the calipers, maybe something else is hitting.

 

[dansmith11]

what makes you think they are hitting? if you have 4mm of clearance from the back of your wheel centers to the calipers, maybe something else is hitting.

they are hitting because the noise was not there with my stock brakes, and i can see the mark on the inside of the wheel spokes where it hit.

 

[Yellow 13]

Go over everything and make sure its all tightened down. Sounds like something loose to me.

 

[TurboStreetCar]

maybe heat expansion? was this under hard braking or like backing out of your drive way?

 

[twinturbozs]

4mm is alot of clearance. I cant imagine why you would contact the back of the spokes against the calipers unless the wheels are flexing or the spacers are flexing. Are you having contact on both wheels?

 

[CRE]

Only three things to choose from that I can think of... flex in the rims, slack in the bearings or flex in the caliper and it's mount on the knuckle. Probably a combination of all three, and no 4mm is not alot it's very little.

 

[ma71supraturbo]

flex in the caliper and it's mount on the knuckle.

My bet is that most of the flex is in the adapters (and their mounts)

 

[dansmith11]

wheel bearings are brand new, theres no play in the bearings.

ive seen skyline brakes on s13's with barely any clearance at all, like 1mm away from spokes and they run with no issues, so 4mm seems like a lot of clearance , thats quite a bit of flex for wheel and brake components to have is it not?

 

[TurboStreetCar]

does it happen at speed? or just pulling out of the drive way and sub 10MPH? what are the brackets made of?

 

[dansmith11]

does it happen at speed? or just pulling out of the drive way and sub 10MPH? what are the brackets made of?

slow speeds with the brakes not even warmed up yet

brackets are aluminum i think, its the arizona performance big brake kit, and i havent heard of anyne else complaining of anything like this though so im leaning towards it being my wheels

 

[Poodles]

PM arz about it, he's been VERY good with customers (or even potential customers!)

 

[arz]

Thanks for contacting me as soon as possible about any problems you are having.

Did you follow all of the Installation instructions?
http://www.supramania.com/forums/showthread.php?t=35175

Can you post a photo of how you have them installed?

The Caliper brackets do flex, by my measurements its less than 1mm under extreemly heavy braking. That usually results in the aft side of the caliper being drawn closer to the rotor center. This would suggest that the forward (trailing) portion of the caliper is possibly drawn away from the rotor center, but I cannot confirm this, as all the wheels I have tested with have had plenty of clearance.

How did you measure the 4mm of clearance? Can you post a photo of the measurement and where you took it?

BTW I make no claims that these brakes will work with any and all 17 inch wheels. If you have to space your wheels out just to clear the Brakes I would recommend a different set of wheels. As a matter of fact I dont remember you mentioning exactly what size and make wheels you have.

To make sure you are getting an accurate measurement I would try modeling clay stuck to the inside of the rim and rotating the wheel and seeing if you actually get 4mm of clearance. I find it very surprising that the wheels or the calipers, or the bracket allow that much movement. Then again you did not elaborate on where that clearance was measured (radially, axially, a combination?).

Again please post a photo of how you are taking your measurement, and if you could, could you please post a photo of how the fasteners are arranged on the caliper bracket and the caliper.

wheel bearings are brand new, theres no play in the bearings.

So let me clarify, When exactly did you replce your wheel bearings? How did you establish there is NO play in the bearings? You didnt share this with everybody http://www.supramania.com/forums/showthread.php?t=45297

I am very avaliable to help any and all perspective and current customers. Please call me any time. If you need, I will call you right back. Andy Z 480 861 0586

 

[dansmith11]

Thanks for contacting me as soon as possible about any problems you are having.

Did you follow all of the Installation instructions?
http://www.supramania.com/forums/showthread.php?t=35175

Can you post a photo of how you have them installed?

The Caliper brackets do flex, by my measurements its less than 1mm under extreemly heavy braking. That usually results in the aft side of the caliper being drawn closer to the rotor center. This would suggest that the forward (trailing) portion of the caliper is possibly drawn away from the rotor center, but I cannot confirm this, as all the wheels I have tested with have had plenty of clearance.

How did you measure the 4mm of clearance? Can you post a photo of the measurement and where you took it?

BTW I make no claims that these brakes will work with any and all 17 inch wheels. If you have to space your wheels out just to clear the Brakes I would recommend a different set of wheels. As a matter of fact I dont remember you mentioning exactly what size and make wheels you have.

To make sure you are getting an accurate measurement I would try modeling clay stuck to the inside of the rim and rotating the wheel and seeing if you actually get 4mm of clearance. I find it very surprising that the wheels or the calipers, or the bracket allow that much movement. Then again you did not elaborate on where that clearance was measured (radially, axially, a combination?).

Again please post a photo of how you are taking your measurement, and if you could, could you please post a photo of how the fasteners are arranged on the caliper bracket and the caliper.

So let me clarify, When exactly did you replce your wheel bearings? How did you establish there is NO play in the bearings? You didnt share this with everybody http://www.supramania.com/forums/showthread.php?t=45297

I am very avaliable to help any and all perspective and current customers. Please call me any time. If you need, I will call you right back. Andy Z 480 861 0586

ya i got them installed just like the install instructions, fasters in the same order etc.

my measurements arent exactly percise, they were from the round part on the back of the caliper on each piston to the spoke of the wheel, that is the part where it gets closest. I'll have to take some pics to make that clearer

My wheels are some 18" old school work VS's, they have a fairly crappy spoke design for clearing big brakes, and i have new wheels on the way to solve the problem, this is more a curiousity thing as im trying to figure whats going on and how my wheels are hitting still even with the clearance i have.

And just to be clear, I wasnt tryin to say anything bad about the quality of this kit or anything, If anything I think its my wheels flexing or something else going on, which is why i posted here first instead of going directly to you.

 

[arz]

Sorry about the knee jerk, response, in re-reading the entire post I see that, all of your questions werent directed at my Brake kit. Still I would have liked the opportunity to help you solve this issue before it was broadcast publicly.

I would still look very closely at the torque value on the wheel bearing spindle/stub nut. It is possible that the nut isnt tight enough or that debris were trapped between the inner bearing races preventing them from completely closing.

Make sure to try the clay trick with the wheels before and after the fact.

Please contact me if I can help in any way.

 

[dansmith11]

Sorry about the knee jerk, response, in re-reading the entire post I see that, all of your questions werent directed at my Brake kit. Still I would have liked the opportunity to help you solve this issue before it was broadcast publicly.

I would still look very closely at the torque value on the wheel bearing spindle/stub nut. It is possible that the nut isnt tight enough or that debris were trapped between the inner bearing races preventing them from completely closing.

Make sure to try the clay trick with the wheels before and after the fact.

Please contact me if I can help in any way.

ya ill try the clay thing, and sorry for not going to you first, I didnt want it to sound like i was complaing about the kit becuase its a sweet setup , im well aware of the fact that its the design of the spokes of my wheels which is the problem (which is why i have new wheels on the way) i was just looking for a way to use my current wheels in the mean time since my other wheels are 2 months out from japan. and i figured since its a problem with my wheel design and not your kit, its not really your problem and didnt wanna annoy you with questions when there is nothing wrong with your kit.

 

[arz]

... and i figured since its a problem with my wheel design and not your kit, its not really your problem and didnt wanna annoy you with questions when there is nothing wrong with your kit.

I would immediately address ANY problems with my kit if there were any, I appreciate you stating in so few words, that its not a problem with my kit.

Again, if I can help in any way please let me know.

 

[Ckanderson]

wierd 4mm of play is allot. Im pretty sure it's not your wheels. is it hitting on both sides, or on only one?

 

[dansmith11]

wierd 4mm of play is allot. Im pretty sure it's not your wheels. is it hitting on both sides, or on only one?

both sides

 

[Sawbladz]

Could you take some pics to give us a better idea of what/where it is making contact with the wheel?