tr7triumph.com

OK I replaced the rear cylinders, brake rubber lines, rebuilt calipers and tried to rebuild the master. Unfortunately the master cylinder rebuild kit had poor quality seals and do not fit properly in the cylinder. So I ask, is there a master cylinder other than the over priced origional unit that I might be able to find locally?

And to top it off, I figured out why it has been running so poorly lately. The booster is shot. When I blocked off the vacuum line it smoothed right out and ran perfect. So any other options for that?

Maybe somebody has a set of used units they'd sell me cheap.

TIA
Frustrated as always when I work on this car

John Peacock
"like many other great ideas this too started with 2 guys in a bar"
80 TR7, Brooklands Green, Maybe on the road soon
98 Z28 over 500rwhp

That is not an option. We had sort of a falling out/misunderstanding about rust a few years ago. Nobody else has had any problems that I am aware of with him, but he did me wrong, so I wont smear his name, but I also wont use him either for anything.



John Peacock
"like many other great ideas this too started with 2 guys in a bar"
80 TR7, Brooklands Green, Maybe on the road soon
98 Z28 over 500rwhp

Oh and I seem to have lost that one way valve somehow. Could that be the problem with the booster? Because I have 2 boosters here doing the same thing.

John Peacock
"like many other great ideas this too started with 2 guys in a bar"
80 TR7, Brooklands Green, Maybe on the road soon
98 Z28 over 500rwhp

Could be the problem. If you don't want to talk further to Woody, you might want to try Erick Van Sickle, Leyland English Auto Repair, in Keenebunkport, ME [207-967-2504]. He knows TR-7's quite well and has a lot of used parts in stock. He doesn't do junk either.

Jeff

Jeffrey Aronson
P.O. Box 90
Vinalhaven, ME 04863
USA
'80 TR-7 Spider
'66 Land Rover Series II-A [2]
'66 Corvair Monza

Just another thought. You might not have lousy seals, but you might have a pitted master cylinder body that is leaking out pressure. Not every cylinder can be rebuilt successfully.

Jeff

Jeffrey Aronson
P.O. Box 90
Vinalhaven, ME 04863
USA
'80 TR-7 Spider
'66 Land Rover Series II-A [2]
'66 Corvair Monza

NO, the rear seal was so big I couldnt get it in the master cylinder. Not only that, the whole kit was only 4 seals, 3 of the front ones and 1 of the rear. No matter where I put that one seal, it would not fit in the master cylinder. Maybe the kit was shorted the correct seal and I have been trying to use the wrong one, but for $20 I certainly got ripped for 4 little seals and one that didnt work.

John Peacock
"like many other great ideas this too started with 2 guys in a bar"
80 TR7, Brooklands Green, Maybe on the road soon
98 Z28 over 500rwhp

Who did you get your seals from? British Parts Northwest carries two types, Brand X and TRW. I got the TRW one for a few bucks more ($18). I've read the Brand X types are not worth the few bucks you save. I've yet to put them in but will in the next few weeks. Some kits fit more than one type of master cylinder so you don't use all the parts.

http://www.bpnorthwest.com/.sc/ms/dd/TR7-8--Braking%20Components/8084/Brake%20Master%20Cylinder%20Kit%20MGB%2075%20to%2080%2C%20TR7%20TR8

TR7 Spider - 1978 Spifire - 1976 Spitfire - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra

Yeah, I got the cheap one. It wasnt that it had more seals than I needed, it didnt have enough, and the ones that were there didnt fit. So you say the TRW works. I will have to call BPNW tomorrow.

John Peacock
"like many other great ideas this too started with 2 guys in a bar"
80 TR7, Brooklands Green, Maybe on the road soon
98 Z28 over 500rwhp

OK I found the one way valve. It still seems to have the vacuum leak. I couldnt test run it too long, the wife is sleeping. I will know more tomorrow.

I shot off an email to BPNW about the quality of the rebuild kit. Lets see what happens.



John Peacock
"like many other great ideas this too started with 2 guys in a bar"
80 TR7, Brooklands Green, Maybe on the road soon
98 Z28 over 500rwhp

Hey John,

Man, I wish you had contacted me a week ago. I just gave away a parts car with a functioning master and booster. The reservoir was broken though. I might be able to get it back. Email me direct.



Terry Merrell
St. Louis, MO

Sent you an email Terry. Let me know.

John Peacock
"like many other great ideas this too started with 2 guys in a bar"
80 TR7, Brooklands Green, Maybe on the road soon
98 Z28 over 500rwhp