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4 drum original 68 Coronet

Posted earlier regarding a new clone MC that the new bushing doesn't look due to bore size and no inner groove. After looking further on the new MC I noticed the spec reference 2 different brake line fittings on the MC. The new one I'm retuning has both 9/16-20 and 1/2-20 fittings and my...

Did the new bushing fix the problem? I just received a new aftermarket Bbody MC and the piston center hole is larger than the original so the rod can slide in / out with little resistance using new bushing. Also has metric threads for the dust cap so original screws won't work. Sending back to...

Thanks for the response. The MC I bought looks exactly like my original but the piston hole is several thousandths bigger than my original. The rod/bushing will not lock and can slide in and out with little resistance, also dust boot screw threads are metric so I would need new screws. I'm...

Did you sell them?

How did you get the bushing to lock in the piston? My push rod / bushing slide in and out of the piston with little or friction. Did yours also require using metric screws for the piston retainer/boot? I'm sure the brakes would work but concerned with potential of the push rod not secure.

I have it boxed up and waiting for seller to respond. He wants me to pay shipping and I told him the part is not correct so I shouldn't have to pay. I'm concerned that he sold 77 of these with no issues reports. Too bad, the MC does look good. Either way its going back.

I thought about using my old piston with seals from new but a little concerned with the metric threading on the casting. Any chance there could be an issue?

I just purchased a new aftermarket Master Cylinder off Ebay that looks identical to my original. I found that the push rod and rubber bushing slide into the piston with no resistance and will easily pull out. I checked with t a caliper and the new piston inner bore is the same size and the...

Hello Jerry, Quick question, I found a matching aftermarket Master Cylinder on Ebay and is has the same piston limiting screw on the side between the pistons. The MC looks exactly like my original having the 1" piston. I was installing the push rod and noticed the piston does not as the...

Jerry Thanks for the info. I'll go Oreillys - Looks like brake best NMC11373M Rgds Mory

Yes - mine is 11" 4 wheel drum. Looks like several aftermarket - looking for recommendation. I see some on Ebay that are clones but dont know if any good. Thank you

Sorry about that. 4 drum brakes original - current master cylinder is the 2880809. 1968 Coronet RT

Original Master Cylinder failed and has some pitting in the cylinder. Looking for recommendation for replacement. Lots of different aftermarket brands and I want to ensure I install the right one. I saw an option to send my old for sleeving but very pricey. Thx Morey

Hello My name is Morey and I own a 1968 Cornet RT. Looking forward to exchanging info with the experts and referencing the forum. I'm currently planning to replace the rear seal and looking for some tips to ensure a successful repair. Rgds