master cylinder to prop valve line trouble - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skeeterbug · 04-25-2010, 04:03 PM

i hope one of my fellow board members can help with a very aggravating problem i am having with my 4 power disc conversion i am attemting to finish up. i am currently converting my 71 lwb over from manual disk/drum to 4 wheel power disc using captn fabs astro van disc conversion brackets for the rear, very good quality stuff by the way. i have everything done except i keep having trouble with getting the right steel lines that go between the master cylinder and the prop valve. i bought a master cylinder/booster set for a 88 s10 from orielys, the prop valve came from jegs a disc/disc valve. all i guess i want to know is can i use my corvette style master cylinder w/ an 88 style s10 booster, the master cylinder it came with will not work with any of my steel lines i have like three new set none will work with that style master cylinder!

**lolife99** · 04-25-2010, 09:17 PM

Take your M/C back to O'Reilly's and buy this. Done.

http://www.performanceonline.com/sto...at=1085&page=1

**lolife99** · 04-25-2010, 09:19 PM

This one would be better.
http://www.performanceonline.com/sto...at=1085&page=2
Aluminum so no painting or rusting.

cparman · 04-26-2010, 09:15 PM

not to contradict what LOLIFE said, but I will assume that you are having trouble connecting the lines to the MC? If you take the MC to NAPA, and find the right fittings, the will accept the proper sized line, then all you will have to do is to double flare them. They MIGHT even have some adapters to keep you from having to flare the lines

**lolife99** · 04-26-2010, 11:32 PM

Quote:

Originally Posted by cparman

not to contradict what LOLIFE said, but I will assume that you are having trouble connecting the lines to the MC? If you take the MC to NAPA, and find the right fittings, the will accept the proper sized line, then all you will have to do is to double flare them. They MIGHT even have some adapters to keep you from having to flare the lines

I agree,... this is what I would do.
Bend your own lines.
I posted up the set-up from POL, because it's clean and already pre-plumbed.
But the lines from the porportioning valve (to the truck) will probably have to be re-bent anyway.

cparman's solution, is a cheaper one.

**Captainfab** · 04-27-2010, 12:10 AM

Yes you can use the Vette master with the S10 booster as long as it's a master for power brakes. And make sure the short pushrod in the booster is in there.

Quote:

Originally Posted by skeeterbug

i hope one of my fellow board members can help with a very aggravating problem i am having with my 4 power disc conversion i am attemting to finish up. i am currently converting my 71 lwb over from manual disk/drum to 4 wheel power disc using captn fabs astro van disc conversion brackets for the rear, very good quality stuff by the way. i have everything done except i keep having trouble with getting the right steel lines that go between the master cylinder and the prop valve. i bought a master cylinder/booster set for a 88 s10 from orielys, the prop valve came from jegs a disc/disc valve. all i guess i want to know is can i use my corvette style master cylinder w/ an 88 style s10 booster, the master cylinder it came with will not work with any of my steel lines i have like three new set none will work with that style master cylinder!

skeeterbug · 04-27-2010, 10:00 AM

thanks for the help guys my neighbor helped me out to fix the problem.

04-25-2010, 04:03 PM	#1
skeeterbug Registered User Join Date: Jul 2009 Location: watertown, tn Posts: 332	master cylinder to prop valve line trouble i hope one of my fellow board members can help with a very aggravating problem i am having with my 4 power disc conversion i am attemting to finish up. i am currently converting my 71 lwb over from manual disk/drum to 4 wheel power disc using captn fabs astro van disc conversion brackets for the rear, very good quality stuff by the way. i have everything done except i keep having trouble with getting the right steel lines that go between the master cylinder and the prop valve. i bought a master cylinder/booster set for a 88 s10 from orielys, the prop valve came from jegs a disc/disc valve. all i guess i want to know is can i use my corvette style master cylinder w/ an 88 style s10 booster, the master cylinder it came with will not work with any of my steel lines i have like three new set none will work with that style master cylinder! __________________ '71 LWB c10-"WORK" in progress 385 ci 4 bolt (4.040 bore), scat 6.0" forged h beams,scat forged crank 3.750, speed pro 5cc flat top, clevite bearings, .039 head gaskets,comp xr288hr 110* 288/294adv. 236/242@.50 555/576 lift, pbm hyd roller lifters, chad spiers 215cc imp. heads , comp 1.6 roler rockers, comp magnum push rods, edelbrock victor jr. single plane intake p&p (1206 gasket matched), quickfuel 750R DP , th 350 trans, 5.14 gear, 3000 stall 2012 best 1/8- 7.70 @ 87mph 1.70 60' (lil better) 2013 best 7.39 2014 best-7.38 New for 2013-strange rear coilovers, headman 1-3/4 headers, 5.13 r&p, .060 aluminum bed floor, 15x14 holeshots w/ 31x18.5 hoosier dot pro's, 15x4 holeshots w/ 26x5.5 m/t skinnies and 200+#'s in body weight loss & 6 point cage

04-25-2010, 09:17 PM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,701	Re: master cylinder to prop valve line trouble Take your M/C back to O'Reilly's and buy this. Done. http://www.performanceonline.com/sto...at=1085&page=1 __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

04-25-2010, 09:19 PM	#3
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,701	Re: master cylinder to prop valve line trouble This one would be better. http://www.performanceonline.com/sto...at=1085&page=2 Aluminum so no painting or rusting. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

04-26-2010, 09:15 PM	#4
cparman sharp as a marble Join Date: Jan 2007 Location: atlantic beach,florida Posts: 1,082	Re: master cylinder to prop valve line trouble not to contradict what LOLIFE said, but I will assume that you are having trouble connecting the lines to the MC? If you take the MC to NAPA, and find the right fittings, the will accept the proper sized line, then all you will have to do is to double flare them. They MIGHT even have some adapters to keep you from having to flare the lines

04-27-2010, 10:00 AM	#7
skeeterbug Registered User Join Date: Jul 2009 Location: watertown, tn Posts: 332	Re: master cylinder to prop valve line trouble thanks for the help guys my neighbor helped me out to fix the problem. __________________ '71 LWB c10-"WORK" in progress 385 ci 4 bolt (4.040 bore), scat 6.0" forged h beams,scat forged crank 3.750, speed pro 5cc flat top, clevite bearings, .039 head gaskets,comp xr288hr 110* 288/294adv. 236/242@.50 555/576 lift, pbm hyd roller lifters, chad spiers 215cc imp. heads , comp 1.6 roler rockers, comp magnum push rods, edelbrock victor jr. single plane intake p&p (1206 gasket matched), quickfuel 750R DP , th 350 trans, 5.14 gear, 3000 stall 2012 best 1/8- 7.70 @ 87mph 1.70 60' (lil better) 2013 best 7.39 2014 best-7.38 New for 2013-strange rear coilovers, headman 1-3/4 headers, 5.13 r&p, .060 aluminum bed floor, 15x14 holeshots w/ 31x18.5 hoosier dot pro's, 15x4 holeshots w/ 26x5.5 m/t skinnies and 200+#'s in body weight loss & 6 point cage



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