Centering front caliper; where to measure
I am having difficulty with my front calipers after installing S/S pistons as they are no longer centered about the rotor. I am confused on what to use as a measurement point on the caliper. Should I use the flat areas on the caliper body that the rotor rides between, or should I use the outward face of the pistons? Thanks in advance!
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Maybe I have missed something over the years, dunno.
The calipers bolt up to the vertical strut, on the 2 ears cast and machined from the factory, thats it. There is no adjustment for rotor position. I have never had issues on any of mine, and those items have been off and on so many times. The shims in that area are for the steering arm, and have nothing to do with the caliper. |
If my memory serves, the caliper slides laterally on a set of pins to accommodate for wear on the pad located on the opposite of the rotor from the piston.
The caliper is self adjusting for position. |
Originally Posted by Grant Francis
(Post 1690177)
Maybe I have missed something over the years, dunno.
The calipers bolt up to the vertical strut, on the 2 ears cast and machined from the factory, thats it. There is no adjustment for rotor position. I have never had issues on any of mine, and those items have been off and on so many times. The shims in that area are for the steering arm, and have nothing to do with the caliper. |
Originally Posted by Mikey
(Post 1690204)
If my memory serves, the caliper slides laterally on a set of pins to accommodate for wear on the pad located on the opposite of the rotor from the piston.
The caliper is self adjusting for position. |
Originally Posted by wadvocate
(Post 1690347)
Well, my problem started when I installed S/S pistons, which do not have the .017" deep dimple on the bottom of the small pistons to clear the raised bump in the bottom of the small bores, hence, the problem.
Machining stuff or adding shims is a case of two wrongs don't make a right. Is the caliper centred without the pistons installed? If no, find out why. |
BUGGA.
Its a Series 3 E TYPE. Sorry, my answer is probably not related to that brake system. However, in the ONE only I have seen is pieces, they are a caliper similar to the Series XJ fixed style, which means, as already stated, the pistons are not retracting into the caliper far enough, maybe coz they are for the XJ caliper, and not the E caliper, dunno. |
Originally Posted by Mikey
(Post 1690464)
So, the pistons are not retracting adequately either due to a manufacturing error or poor design. Ditch them and use OEM stuff.
Machining stuff or adding shims is a case of two wrongs don't make a right. Is the caliper centred without the pistons installed? If no, find out why. |
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