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Alcon 6 pistons...

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Old Aug 14, 2007 | 10:41 PM
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Alcon 6 pistons...

I'm trying to fit my 17s over my 355 6 piston Alcons and the caliper scrapes on the inside of the wheel(not the spokes.) My question is, can I sand down the caliper so that it doesn't scrape, or do I need alot of clearance(will the caliper move at all or expand?) Thanks
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Old Aug 14, 2007 | 11:13 PM
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When you go with a big brake kit, you often have to go with an inch-up wheel. My 17's were insufficient for my 355 4 piston Project Mu kit. My 18's are barely sufficient for my 370 Endless kit. Just get bigger wheels instead of altering such a beautiful caliper.
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Old Aug 14, 2007 | 11:26 PM
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He has 18s for street wheels but 17 inch autox wheels...
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Old Aug 15, 2007 | 05:34 AM
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I don't think you will have any luck with that as i'm running the 343mm Alcon 6pot kit on a 17" wheel and there is only a few mm of clearance with that.
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Old Aug 15, 2007 | 08:43 AM
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Have the caliper machined. I do it all the time. Custom parts require custom fitting. As long as you're not dealing with a critical area (the OD of the body is not critical), machining to fit is no problem.

If you don't feel comfartable with the machine shops near you, just PM me and I'll get you situated.

Darin
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Old Aug 15, 2007 | 09:34 AM
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DO NOT MODIFY THE CALIPER!!!! The Alcon caliper used in your kit is a monobloc design which means that removing ANY material from the body will greatly reduce the stiffness of the caliper and sacrifice the structural integrity of the unit. If you want the ability to run a 17" wheel you can step down a size disc and have a set of 340mm (13.5") discs for auto-cross and retain your 355mm (14"), all you would need would be a pair of discs/hats and the appropriate spacers.
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Old Aug 15, 2007 | 09:47 AM
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Originally Posted by djtmotorsports
Have the caliper machined. I do it all the time. Custom parts require custom fitting. As long as you're not dealing with a critical area (the OD of the body is not critical), machining to fit is no problem.

If you don't feel comfartable with the machine shops near you, just PM me and I'll get you situated.

Darin
Well, gee, why doesn't he just machine away some material from his wheel instead?

Yes, let's all go out and take metal away from parts that don't fit on critical safety oriented parts. Because if it doesn't fit right, clearly the engineers of the product who spent thousands and thousands of dollars to make sure it works right and fits as properly as possible can't be right!

Vostok 7
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Old Aug 15, 2007 | 10:59 AM
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Personally i would just get bigger wheels. machining down the caliper will hurt its resale value in the end.
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Old Aug 16, 2007 | 09:04 AM
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machine the inside of the wheels BEFORE do anything to the caliper just like stasis said!
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Old Aug 16, 2007 | 09:16 AM
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Originally Posted by evo_8_u
machine the inside of the wheels BEFORE do anything to the caliper just like stasis said!
Uh, no, that's a stupid idea too and that's not what Stasis said.

Machining the wheels down is an even dumber idea than machining the calipers!

Vostok 7
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Old Aug 16, 2007 | 09:40 AM
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this machining thing sound stupid! get a bigger rims like KMX said.
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Old Aug 16, 2007 | 09:52 AM
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Originally Posted by Vostok 7
Well, gee, why doesn't he just machine away some material from his wheel instead?

Yes, let's all go out and take metal away from parts that don't fit on critical safety oriented parts. Because if it doesn't fit right, clearly the engineers of the product who spent thousands and thousands of dollars to make sure it works right and fits as properly as possible can't be right!

Vostok 7
Didn't realize that these were the monoblock calipers, I reatract my comments concerning that specific application.

Darin
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Old Aug 16, 2007 | 10:06 AM
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Damn, if you can afford a 14", 6-piston Alcon brake setup, invest in some new 18" RE30's or something. You won't be adding much weight and you won't have to worry about destroying high dollar car parts.


Who the hell would modify a $1500 caliper?
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Old Aug 16, 2007 | 10:18 AM
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Originally Posted by djtmotorsports
Didn't realize that these were the monoblock calipers, I reatract my comments concerning that specific application.

Darin
It's a bad idea on any of them, monobloc or not.

Vostok 7
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Old Aug 16, 2007 | 10:21 AM
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DO NOT MACHINE CALIPERS OR WHEELS....DO NOT EAT YELLOW SNOW EITHER! Seriously, you do not want to machine the inside of the wheel either. Your best bet would be to purchase a pair of 340mm rotors and caliper spacers. Your existing bracket does not need to be changed. Please feel free to contact us @ 707-935-9700 if you have any further questions.
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