The New And Improved Unofficial R65 Forum V2
Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: Bob_Roller on April 27, 2020, 05:43:07 PM
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I was going through the Motobins site this afternoon and found 38 mm replacement caliper pistons look like stainless steel .
For the life of me I can't remember the correct size for the ATE calipers .
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I was going through the Motobins site this afternoon and found 38 mm replacement caliper pistons look like stainless steel .
For the life of me I can't remember the correct size for the ATE calipers .
:I found the below line from a member:
The standard 38mm Brembo FO8 caliper is a direct replacement to the very expensive 36mm Brembo and the NLA ATE caliper.
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I was trying to save the ATE calipers, but I won't know until I disassemble them, 40 years, I'm not expecting the calipers to be reusable due to corrosion .
But if they are I'd like to replace the pistons as they are well known to be rusted .
I've got a spare set of Brembo calipers if they are unuseable .
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The Ate pistons are also 36mm.
Mine have some corrosion but as it's not at in the seal contact area it doesn't impact on function. With the cost and availability of Ate spares I can't help think that I'll have to go the Brembo route sooner or later though.
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Barry, the only issue with the ATE calipers is the chrome plated pistons that start to rust. Stainless pistons can be made and repair parts are available (although pricey, still not as bad as a set of used Brembos that will also need service).
There was a website specializing in Jaguar E-type parts that sold stainless ATE pistons years back. A local machine shop could also make them. What I love about the ATE calipers is the surface finish; it's bomb proof. Also, I think my silver LS looks better with the ATE calipers over the black Brembos.
I'll be embarking on making new pistons (and lines) soon and will be sure to share.
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When I brought the Junkyard Dawg back to ife I machined new pistons from SS.