How much clearance do I need spoke to caliper?
04-20-2018, 02:46 PM
#1
Race Director
Thread Starter
How much clearance do I need spoke to caliper?
Trying some ccw I have on the c6z. The rear spoke is just kissing the caliper. Would a 1/4" spacer be enough? These are 18x12 rears. I would get a little longer stud so I can get at least 8 turns.
1"4 would also let me clear the tub a little more, now it's maybe 1/8 to 1/4" clear on the tub (hard to measure it).
Fender looks to be ok. As is the control arms etc.
Also the tires are 335x30x18 so I may go to 345x30x18 (as far as the tub & fender.) But I don't want to spacer out more than needed because of the fender.
1"4 would also let me clear the tub a little more, now it's maybe 1/8 to 1/4" clear on the tub (hard to measure it).
Fender looks to be ok. As is the control arms etc.
Also the tires are 335x30x18 so I may go to 345x30x18 (as far as the tub & fender.) But I don't want to spacer out more than needed because of the fender.
Last edited by froggy47; 04-20-2018 at 02:49 PM.
04-20-2018, 06:27 PM
#3
Race Director
Thread Starter
Really? Eight hundreth's? Whoa, I would never have figured that close. So if I am right touching, I only need a tiny spacer, maybe 1/8 inch if they come that thin. Might not need the extended studs as I get about 9 turns stock.
Anyone have a source for thin spacers?
Anyone have a source for thin spacers?
04-20-2018, 06:52 PM
#4
Drifting
Take a look at the note near the bottom of this page:
http://www.wilwood.com/Images/BrakeK...229_wcd-lg.jpg
Get some thin stock from McMaster and drill some holes!
http://www.wilwood.com/Images/BrakeK...229_wcd-lg.jpg
Get some thin stock from McMaster and drill some holes!
04-21-2018, 10:24 AM
#7
Instructor
Because a wheel shouldn't be deforming and caliper/wheel when bolted up are static; .00000000000000000001" would even be enough. I've seen people grind calipers to fit wheels and only take away just enough to allow wheel to spin.
04-21-2018, 12:51 PM
#8
Racer
http://www.motorsport-tech.com/wheel...ers_pop_car_d1
Last edited by YYZ06; 04-21-2018 at 12:53 PM.
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froggy47 (04-21-2018)
04-21-2018, 07:17 PM
#9
I had this same issue a while back.
I spoke with AP and a Brembo rep. Each recommened a minimum 2mm clearance with a good forged wheel.
I have been running a 3mm spacers without issue.
I spoke with AP and a Brembo rep. Each recommened a minimum 2mm clearance with a good forged wheel.
I have been running a 3mm spacers without issue.
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froggy47 (04-21-2018)
04-22-2018, 10:20 AM
#12
Burning Brakes
Destroyed big brake kits and wheels..... $11,000.00
Real world experience..... Priceless....
04-22-2018, 10:32 AM
#13
Instructor
I’ll agree being on safe side is wise, always. And good points that it’s not exactly static. But sounds like y’all are blowing out wheel bearings, they do not have the play that is being suggested. Obviously my .0000000000001 was a wild exaggeration. I’ll be more careful in wording.
04-22-2018, 06:21 PM
#14
Burning Brakes
I’ll agree being on safe side is wise, always. And good points that it’s not exactly static. But sounds like y’all are blowing out wheel bearings, they do not have the play that is being suggested. Obviously my .0000000000001 was a wild exaggeration. I’ll be more careful in wording.
04-22-2018, 06:39 PM
#15
Race Director
Thread Starter
I’ll agree being on safe side is wise, always. And good points that it’s not exactly static. But sounds like y’all are blowing out wheel bearings, they do not have the play that is being suggested. Obviously my .0000000000001 was a wild exaggeration. I’ll be more careful in wording.
But ya never know.
Last edited by froggy47; 04-22-2018 at 06:40 PM.
04-22-2018, 07:10 PM
#16
Burning Brakes
Wheels flex too.... there absolutely needs to be a gap to allow for movement of the wheel. A few mm sounds good unless there is excessive play in the hubs.
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BrianCunningham (04-24-2018)
04-23-2018, 09:53 PM
#18
Le Mans Master
I would say that it depends on how FLEXIBLE your wheel is! I run Stoptech BBK (front and rear) and run a (soft) matchBOOK of space between caliper and wheel with no problems (on race tires).
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BrianCunningham (04-24-2018)
04-25-2018, 08:47 PM
#19
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04-25-2018, 08:52 PM
#20
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Bill
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froggy47 (04-26-2018)