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On 15 Mar 2004 at 11:47, Everett Barnes wrote: > It has been mentioned that the Type 3 caliper piston is 42 mm vs. 40 mm for > Ghias. I had the opportunity to buy a set of calipers this weekend that I > was pretty sure were off a '69 Fastback but when measured, they were 40 mm. > > How do you measure them? I noticed the piston has a step on the edge so do > you include that step or ? When measuring, ignore the diameter at the front. Only the main, largest diameter counts, as this is the diameter that is responsible for generating the hydraulic force. If the piston retaining plates are there you will notice that they are also different between our calipers and the type 1 calipers. Ours look like the ones shown in the type 3 Bentley manual. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org