Master Cyl, need sleeves g
 

Anyone have a shop to sent a master to to sleeve? Anyone here on the site?

Just sent my 70 L78 master cylinder to white post restorations for the same problem. I've heard nothing but good about them. https://whitepost.com/

I've used White Post and Karp's, great service from both.

Yep, White Post, quick turn

Apple hydraulics did mine. Good service.
The research I did seemed to favor a brass sleeve rather than stainless the master cylinder bore is very thin wall and the higher stress of a SS sleeve had reports of cracking the casting if the interference fit isn’t perfect.

Did they rebuild your master cylinder or just sleeve it. Anyone rebuild there own master cylinder?

I've done it. Very easy to do as long as your bore isn't too bad. You might be able to get away with just honing it. If it just needs seals, that's a no brainer.

Thanks for the info. I’ll pass it to a friend. I’ll get pics from who he sends it to and post them. ����

I think I got my rebuild kits at NAPA. Pretty easy to do

Yup I just bought one from Napa my self! I’m pretty good with mechanics so i figured it can’t be that hard.

If you rebuild your own (very simple I might add), instead of buying a rebuild kit, buy a complete similar rebuilt master cylinder. You can buy the rebuilt master for less money then the rebuild kit. At least that has been my experience.

That's exactly what I did. And here I thought I was being uniquely crafty lol It was actually because I couldn't source a rebuild kit when I did it.

Whitepost. Really fast service. I have sent several over the years. I fedex them there on a Monday morning and have always had them back before Friday. One time I had it back Wed afternoon!. They sleeve them.

Note: If you want the original finish left alone, like on a survivor car, make sure you tell them beforehand so they don't paint it.

Just a heads up. I checked in on mine and they are a little backed up 2 to 3 weeks.

HA! that's a bit better than Karps. They took 4 months on mine. It takes a lot for me to rip on someone, but when a company tells you 3 times over 3 months that it'll be done that very week, we have an issue. I sent my last resleeve to LoneStar brakes and they performed as I expected. They'll get my next one.
Rebuilding a master is a simple gig, but you need to source the best seals you can. Dealing with 2 stroke bikes will teach you this in a hurry.

Hi i just sent today to White Post my GM Moraine Master Cylinder for 1974 Trans am for sleeve and rebuild they told me takes 3 to 4 weeks to returned done but give me the option to pay 25% more and returned in 3 days after received also they told me they painted in cast grey in my case is good because i plan to repainted in black like comes from factory and the cast grey base is good to prevent rust in the future. after receive i posted pics before and after thanks

His is pitted Has to be sleeved.
I sent my og master out to be rebuilt. $35. Came back all Brad lasted It went to Pittsburgh.

I have never had any luck with rebuilt masters even when the cars were only ten years old.
They would work for a month to a year and then started to leak and bleed off pressure.
Since then I have always used new and never had an issue.
I would only trust a quality sleeved master cylinder bore I'm done with honed bore masters.
If one could locate a core from a dry climate area then maybe it might work.

he got it back the other day, there was a small charge to expedite the rebuild, it’s painted and ready to go on the SD. They even had the correct cap for 74, and it was plated factory Correct also.

Nice.
What do they charge for a re-sleeved master

Update, master looked great, he painted it black, correct for F body, and......no brakes.
Had to put the old master back on, and send it back. Very disappointed. But let’s see what they do. His mechanic says it must be the sleeve.

MIne came back about a week ago. Looks great. Unfortunately mine won't be installed soon to check it. My car won't be ready for at least 6 to 8 months to install it.

What do people think on here about White post stating that there would be NO warranty if Silicone Fluid is used.
I have used many White Post Masters and used Silicone in most due to being used in restored cars and the Silicone is protective of paint.
In Short White Post literally re-coils at the mention of Silicone Fluid....What gives on this tidbit? Comments?

Yup I’m wondering the same thing or anyone care to share what the charge for a sleeve and rebuild? Thanks

I want to say with the quicker turnaround price included it was like $350 I’ll confirm.
Now I’m glad I just bought new wheel cylinders for the back instead of bs’n around with the OG ones.

I have one at Karps right now, I think the quote was $275, but that was 3 months ago and it's not back yet.

I was wrong on the price, it was $175. So they did it again for him. Getting it on and bled today. I hope it’s good.

Receive the Master Cylinder back from White Post i paid extra 25% to returned back in 3 days painted in Black before installed and bleeding the MC on the bench but unfortunately not working properly on the car the brake pedal go to the floor we bleed again the complete system and not help this MC have internal bleeding problem i returned back to White Post and they replace the rear piston due to corrosion and sent me back again installed on the car still same problem pedal go to the floor no preassure on MC, i asumme the sleeve is the problem not the piston's call tomorrow to White post to see what they do. keep informed (by the way with my current master cylinder the car brakes perfect)

It’s not doing the kit that’s hard, it’s the sleeve. Btw, it still goes to the floor. So not sure how What Whitepost is going handle this. So much for paying extra to express the whole thing.
He put the non/ correct master back on and the brakes are fine. So. It is their rebuild they did it twice and sill it’s no good.

Sounds like White Post isn't the one to go with anymore... You would think, they would have a way of testing each master before shipping.

I’ve been following the saga daily. everything has to be getting scratched up, and the risk of spilt fluid too. Last thing on the 74 SD to be done. He did find a nos 74 complete unit on eBay. I’ll post what white post does for him.

And the saga continues. They emailed him a pre paid label to ship back for the third time, they both agreed on a fix or a refund this time. What saved my friend is he has a good master, this was all to get the correct casting for 1974. They kept saying it’s your car, not the master we sleeved. But it is. So let’s see.

Hmmm, thats really odd as I have been also having similar issues with my rebuilt master that I sent and had them resleeve.

Makes me wonder now. I had one sent out and got it back. Bench bled it, did everything by the book. No go. Then I figured it has to be something with the Master. So I bought another and had it sent there and just got it back. I just need to try this again on this one I just got.

They said bench test it with gauges. But under load it doesn’t hold. I’m curious what they find.
When I did mine years ago, I painted it cast, its wrong, should be black. I’m tried if people saying, hey that’s wrong. It I hate to take it all apart just for paint.

When you installed in you car the Brake pedal go to the floor?

That’s what he said. It’s not my master, it’s a friends. Then they put the other master on, it works.

It was the sleeve, they are going re sleeve it again, they weren’t that friendly on the phone, they said they would ship when it’s done. Wouldn’t give exact time. I do t think I’d send my parts to them.

I remember a few years back someone here (maybe Tim S) mentioned that your local NAPA store has the ability to rebuild and return your original master cylinders and calipers. I am in the process of correcting some things on my car among them the master cylinder and calipers I removed and saved years ago. It took my local store about a week or two to verify up the chain of command that they could still actually do this since nobody really asks for this. Once verified it took about three weeks to turn them around. I will still have to detail them as they don't do a great job of painting them (they came back with just a quick thin shot of cast iron gray) but it was pretty economical and I got my original stuff back. They tag each piece and have to walk it thought the rebuild process - you also have to pay special freight as well. The calipers were $60 each, the master was $90 (they don't do the lids) and the freight was $80 for everything both ways. Will advise how they work when installed in another month or two.

If you do send your casting via the local Napa shop DO NOT INCLUDE YOUR ORIGINAL LID. They do not replate them or care what lid they give you back, regardless of whether you get your original casting rebuilt and returned. It happened to me years ago. I made the mistake of including the original lid and got a generic one back.

Funny you say that - I intentionally did not include ANY lid (as my original is out being re-plated) and when they returned it I got a generic cast iron gray painted lid on it.