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Bolt Spacing for 6 piston caliper

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Old 09-24-2009, 07:01 AM
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slate blue
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Default Bolt Spacing for 6 piston caliper

Guys does anybody know what measurement is of the spacing of the bolt holes that holds the caliper onto the stub axle? This is for the 6 piston Brembo caliper, in metric if possible, I believe the old spacing was 130 mm for calipers on the 993 twin turbo etc.

Greg
Old 09-24-2009, 10:19 AM
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pete95zhn
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142mm.
Old 09-25-2009, 12:14 AM
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I don't think it is that small I was told more like 222mm for the 6 piston type, maybe 142 mm for the 4 piston GT3 caliper that came out with the 330 mm disc? What size discs did the GT2s have? With 18s I can't run bigger than 355 mm. Anybody know? I would prefer steel brakes as I heard that the carbon ones don't like the track much, or have they improved?

Greg
Old 09-25-2009, 02:15 AM
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BTDT, got the T-shirt... 6 piston calipers & 350mm discs ( GT2 M449 ) on my past 951:



6 piston calipers and 350 mm discs ( 997 turbo ) on my present '00 C2:

Old 09-26-2009, 09:33 AM
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The 350 mm discs appear to have a bigger swept area than the Ferrari 5o setup I have on one of my 928s, if I was to use this setup I would need a two piece disc so that I could use a custom hat. Do you or anybody else know of any options there?

Do anybody know the width of the brake pad? The F50 is a really nice light disc, it is only 32 mm wide, I suspect that these are 34 mm wide?

Greg
Old 09-26-2009, 10:46 AM
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pete95zhn
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Originally Posted by Greg Gray
The 350 mm discs appear to have a bigger swept area than the Ferrari 5o setup I have on one of my 928s, if I was to use this setup I would need a two piece disc so that I could use a custom hat. Do you or anybody else know of any options there?

Do anybody know the width of the brake pad? The F50 is a really nice light disc, it is only 32 mm wide, I suspect that these are 34 mm wide?

Greg
34mm. Check pads from Ferodo's pages. They have nice info there, drawings with measurements and all...you just have to dig deeper from the front page. I'll get into this later = tomorrow. Saturday evening, you know.
Old 09-28-2009, 04:33 AM
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I downloaded a tech drawing from Brembo and that states that the 6 piston off the shelf Brembo caliper has a spacing of 200 mm. Maybe the pics I saw of the Porsche one are unique to Porsche.

I will check the Ferodo pages, thanks for the assistance, it is appreciated.

Greg
Old 06-14-2010, 10:51 PM
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Pete95zhn How did you get to install the 6 piston calipers and 350 mm discs ( 997 turbo ) on your '00 C2I'm looking to do the same.



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