Eldorado Caliper rebuild problems

[mechted]

ok all, please tell me im not crazy and Napa is rebuilding stuff wrong

attached is a pic of the driver side brake pistons: silver one is from my '76 eldo junkyard caliper, the black one is from Napa's "76 eldo caliper" After not being able to compress the piston enough (I was around 0.12" too thin) I said f-it and popped the pistons out to see if there was a difference, and sure enough, there is. The original piston measures 1.950" tall, while the reman piston measures 2.160"! WTF is Napa using the wrong piston or something? the caliper itself matchs, and the casting numbers match, so WTH?!?!

BTW: the P/N i got from Napa is 242-2106, which the website confirms as 1976 Cadillac Eldorado Left Rear Caliper - "Semi Loaded"

Also, this is the 2nd caliper I have gotten from them like this --- the first had FUBARed banjo bolt threads so I returned it and picked up this one instead

 

[mechted]

btw, i am very temped to just use the old piston in the new caliper, but the problem with the old one was that the piston itself was leaking fluid (which ruined a brake pad before i found out - yay!) so im not very trusting of it

 

[4X4HIGH]

Yep, the rebuilt caliper has the wrong piston in it. The fleetwood and seville calipers use the black piston on the right while the eldorado uses the silver piston on the left.

That is the only major difference between the Eldo, fleetwood, and seville calipers. The caliper core itself is the same.

 

[mechted]

While I am glad to hear that... im also stumped as to how to proceed

I guess I should reassemble it and take both in to show them the difference... but does anyone know another part number for me to try?

 

[4X4HIGH]

Put the caliper back together and take it down and show them what the problem is and have them order another caliper and check to see if it has the correct piston in it.

If they don't believe you about the piston being the incorrect one for the application then have them look up a piston for a fleetwood or seville (same piston) then have them look one up for the eldo (different piston) and they should understand what has happened. The book does give a spec on the pistons.