![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
Join Date: Nov 2014
Location: The Old Dominion
Posts: 63
|
'60 Apache Front Disc Brake Conversion MC to Prop Valve Lines
I installed a 1990 1500 booster for the conversion and purchased the matching master cylinder. I couldn't find a proportioning valve local so I ordered one supposedly specific to the master. The front line out of the master is 1/4" with a 9/16-18 thread. The front line in the proportioning valve is 3/16" with a smaller thread.
I was considering returning everything and ordering a combo kit from Summit etc... but the tech rep said he couldn't guarantee that their combo would work with the booster. He suggested I install an adapter in the larger port to fit a 3/16" line. Has anyone run into this issue? Has anyone installed a specific master, prop valve and line kit on this booster? Is installing the suggested adapter a viable solution? I thought I would finish this today but it never works out that way. I appreciate whatever help you guys can lend. |
![]() |
![]() |
![]() |
#2 |
Senior Member
![]() Join Date: Nov 2013
Location: Portland, OR
Posts: 529
|
Re: '60 Apache Front Disc Brake Conversion MC to Prop Valve Lines
I can't seem to find an OEM version of the proportioning valve anywhere, so you might be stuck with using the adapter if you want to keep the 1990 booster/master cylinder setup. I doubt the adapter would cause any problems.
|
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Nov 2014
Location: The Old Dominion
Posts: 63
|
Re: '60 Apache Front Disc Brake Conversion MC to Prop Valve Lines
Thanks for responding. I'm stuck with the booster. I already cut and threaded the shaft. I have not been able to find the adapter locally. I also wondered if there was a master and proportioning valve from another GM vehicle that will fit the booster I have. So far I haven't had much luck.
|
![]() |
![]() |
![]() |
#4 |
Senior Member
![]() Join Date: Nov 2013
Location: Portland, OR
Posts: 529
|
Re: '60 Apache Front Disc Brake Conversion MC to Prop Valve Lines
If you haven’t already I’d take the master cylinder into a NAPA store and compare the mounting flange and piston position to a 1973-ish C10 master cylinder. If they are close you won’t have a problem finding a valve and lines to match the MC.
|
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 2,230
|
Re: '60 Apache Front Disc Brake Conversion MC to Prop Valve Lines
I bought the right nuts to run 3/16" brake line everywhere.
Wilwood adjustable proportioning valve to the back, Line Lock to the front. It works fine. ![]()
__________________
1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, boosted-LS 1977 Silverado: Shortboxed & dropped, potato-potato V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag Lotus Super 7 Replica: Scratch-built street-legal rollerskate |
![]() |
![]() |
![]() |
#6 | |
Registered User
Join Date: Nov 2014
Location: The Old Dominion
Posts: 63
|
Re: '60 Apache Front Disc Brake Conversion MC to Prop Valve Lines
Quote:
I took it in yesterday. Everyone says to use the adapter. One is inbound. Hopefully it works. |
|
![]() |
![]() |
![]() |
Bookmarks |
|
|