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Author Topic: Caliper carrier to hub bolt hole distance  (Read 1221 times)

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ngrainqey

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Caliper carrier to hub bolt hole distance
« on: 02 July 2017, 10:55:50 »
Hello,

I don't suppose anybody happens to know what the distance centre to centre of the bolt holes is do they?

A rather cheap set of corvette brakes has come up and I can sort a disc (rather than the wrong PCD monaro etc discs)

Thanks
Alex
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Doctor Gollum

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Re: Caliper carrier to hub bolt hole distance
« Reply #1 on: 02 July 2017, 14:54:16 »
Straight bolt on requires calipers from cars with a 296x28 mm disc... Base model 5.7 Monaro/Pontiac GTO... Corvette and Monaro VXR use 330x32mm discs which causes offset issues on the Omega... ie not straight bolt on.

Either way, you also need Monaro front brake hoses... Slightly longer :y
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ngrainqey

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Re: Caliper carrier to hub bolt hole distance
« Reply #2 on: 03 July 2017, 02:22:54 »
Quote from: Doctor Gollum on 02 July 2017, 14:54:16
Straight bolt on requires calipers from cars with a 296x28 mm disc... Base model 5.7 Monaro/Pontiac GTO... Corvette and Monaro VXR use 330x32mm discs which causes offset issues on the Omega... ie not straight bolt on.

Either way, you also need Monaro front brake hoses... Slightly longer :y

Yeah I read about the different calipers (296 older monaro and newer monaro/corvette etc ones though there look to be LT1 vs LS1 differences on the Camaro)

I've been looking through the EBC brake catalogue at different discs as they actual list the spec of the monaro discs for example and both the 5.7 and 6.0 VXR look to be 83mm disc height from memory which would mean only a larger diameter disc would be required (such as the 323mm audi a8 3.7 discs as the height and diameter are roughly correct to be a larger version of the omega disc to suit the corvette calipers)

Thanks
Alex
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Re: Caliper carrier to hub bolt hole distance
« Reply #3 on: 03 July 2017, 10:44:12 »
Camaro is a different car/chassis.

Re discs, I used Mercedes ML 330x32mm but had to have the centre bore machined to fit the Omega hub. I also had to space the caliper from the carrier. Still a much more accurate fit than the Audi discs though.

The disc offset/disc height is greater on the Monaro due to a different front hub design, but the position of the inside pad relative to disc face is almost the same as the Omega.

Don't dismiss the base model calipers, they use the same pads and deliver the same force... did I mention that they fit the Omega with standard discs and no buggering about ::)
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