Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
|
04-23-2011, 09:34 AM | #1 |
Registered User
Join Date: Mar 2011
Location: South Jersey
Posts: 234
|
Re: HOW TO: Split the brake lines (many have asked)
Would the pushrod from a 67-70 non-power truck work for those who don't have an adjustable one? Just a thought...
Posted via Mobile Device
__________________
_____________________________________________ Ray All my life, I've been told I'm a "Bad Influence" |
04-23-2011, 10:54 AM | #2 |
Registered User
Join Date: Nov 2009
Location: Galt, Calif
Posts: 2,437
|
Re: HOW TO: Split the brake lines (many have asked)
I ran across and old post a while back in the 67-72 section, this might help as well ...
http://67-72chevytrucks.com/vboard/s...d.php?t=456859
__________________
`64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip |
04-29-2011, 09:41 PM | #3 |
Registered User
Join Date: Mar 2011
Location: South Jersey
Posts: 234
|
Re: HOW TO: Split the brake lines (many have asked)
Disc/drum master has one bowl smaller than the other. Disc/disc and drum/drum both bowls are the same size.
And no disc brakes til '71 Posted via Mobile Device
__________________
_____________________________________________ Ray All my life, I've been told I'm a "Bad Influence" Last edited by Str8axle; 04-29-2011 at 09:45 PM. |
04-29-2011, 10:41 PM | #4 |
Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,940
|
Re: HOW TO: Split the brake lines (many have asked)
Awesome! Thanks Str8!
|
04-30-2011, 09:45 AM | #5 |
Hollister, CA.
Join Date: Sep 2006
Location: Hollister, Ca.
Posts: 6,147
|
Re: HOW TO: Split the brake lines (many have asked)
Again ... I grabed one from '67 Impala...bolted right up.
The Vette ones are perfect for use with all around discs.
__________________
John What the Heck is that ?? CURRENT BUILDS: 62 BurbMaster Other Builds: My '63 C-10,LWB,CC,BBW '06 HD StrAight Axle Swap Father/Son '67 C-20, LQ9,4L80,Bagged,8-Lugger !!Good Friend Richard's Build AMERICAN CUSTOMS & CLASSICS (831) 630-1965 www.ACCHOLLISTER.com ACC on FACEBOOK "Rest in Peace, Mom & Dad ... I will see you again someday!" |
04-30-2011, 07:23 AM | #6 |
Registered User
Join Date: Mar 2011
Location: South Jersey
Posts: 234
|
Re: HOW TO: Split the brake lines (many have asked)
I should add that a disc/disc master is considerably larger in bowl size than a drum/drum master.
Posted via Mobile Device
__________________
_____________________________________________ Ray All my life, I've been told I'm a "Bad Influence" |
04-30-2011, 02:36 PM | #7 |
Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,940
|
Re: HOW TO: Split the brake lines (many have asked)
Thanks Str8 and ChiefRocka - picked up my 67 C10 MC this morning. Good to go. Same functionally as the 67 imp mc, just has the clip-held top vice the screw down type. Thanks again for the help!
|
09-05-2011, 12:02 AM | #8 |
Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,940
|
Re: HOW TO: Split the brake lines (many have asked)
Hey Chief - reviving this great thread one more time! Quick follow-up for you or anyone that has done this. I noticed that someone asked the question about whether or not the "forward" (i.e. the grill end) port on the master went to the front brakes and the "aft" (i.e. firewall end) port on the master went to the rear brakes. (this is on a DRUM/DRUM setup btw)
Your answer was yes. But I noticed that your fwd line on the master was the one you connected to the rear line's new union. Did that get switched later or something? Or for anyone out there - on a drum/drum setup, which master cyl port (fwd/aft) goes to which brakes (front/rear), etc.... Thanks all! Last edited by jocko; 09-05-2011 at 12:17 AM. |
09-05-2011, 10:43 AM | #9 |
Hollister, CA.
Join Date: Sep 2006
Location: Hollister, Ca.
Posts: 6,147
|
Re: HOW TO: Split the brake lines (many have asked)
The REAR PORT, closest to the PUSHROD is the main, or "primary" chamber.
This port is for the FRONT brakes.... The FRONT PORT, furthest from the PUSHROD is the secondary chamber....supplying the REAR brakes.
__________________
John What the Heck is that ?? CURRENT BUILDS: 62 BurbMaster Other Builds: My '63 C-10,LWB,CC,BBW '06 HD StrAight Axle Swap Father/Son '67 C-20, LQ9,4L80,Bagged,8-Lugger !!Good Friend Richard's Build AMERICAN CUSTOMS & CLASSICS (831) 630-1965 www.ACCHOLLISTER.com ACC on FACEBOOK "Rest in Peace, Mom & Dad ... I will see you again someday!" |
09-05-2011, 11:47 AM | #10 |
Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,940
|
Re: HOW TO: Split the brake lines (many have asked)
thanks Chief! You Rocka!!!
|
09-06-2011, 06:08 PM | #11 |
Hollister, CA.
Join Date: Sep 2006
Location: Hollister, Ca.
Posts: 6,147
|
Re: HOW TO: Split the brake lines (many have asked)
__________________
John What the Heck is that ?? CURRENT BUILDS: 62 BurbMaster Other Builds: My '63 C-10,LWB,CC,BBW '06 HD StrAight Axle Swap Father/Son '67 C-20, LQ9,4L80,Bagged,8-Lugger !!Good Friend Richard's Build AMERICAN CUSTOMS & CLASSICS (831) 630-1965 www.ACCHOLLISTER.com ACC on FACEBOOK "Rest in Peace, Mom & Dad ... I will see you again someday!" |
11-27-2011, 10:25 PM | #12 |
Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,940
|
Re: HOW TO: Split the brake lines (many have asked)
Matt -residual valve and prop valve not required for the dual reservoir drum/drum master cylinder setup. Here's a link that may help, based on Chief Rocka's thread here - http://67-72chevytrucks.com/vboard/s...d.php?t=487384 When you go disk/drum, then you can buy a disk/drum (unequal) dual reservoir master cyl and the prop and residual valve. I'm not certain about whether or not you'll need the residual valve in either setup though - I always thought the res valve was only if you had a "low" mounted master cylinder. With a firewall mount, I do not believe it's necessary - but let's get that confirmed by someone on here. But for the drum/drum - you don't need either as long as the master is on the firewall, that much is correct.
|
11-27-2011, 10:29 PM | #13 |
Registered User
Join Date: Nov 2009
Location: Galt, Calif
Posts: 2,437
|
Re: HOW TO: Split the brake lines (many have asked)
Residual valve is only needed when master is down low with the brakes to prevent fluid running back to master....Jocko is correct.
__________________
`64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip |
11-28-2011, 02:26 AM | #14 |
Registered User
Join Date: Mar 2010
Location: Camperdown Vic Australia
Posts: 230
|
Re: HOW TO: Split the brake lines (many have asked)
Thanks guys, that will make life a litle easier.
|
05-25-2012, 04:42 AM | #15 |
Registered User
Join Date: Dec 2011
Location: Czech Rebublic / Europe
Posts: 18
|
Re: HOW TO: Split the brake lines (many have asked)
I did extend our push road for one inch.
Thanks for help!
__________________
I need to do it myself otherwise I won't be happy. |
10-16-2012, 07:39 PM | #16 |
Registered User
Join Date: Jun 2012
Location: East Haven, Ct
Posts: 14
|
Re: HOW TO: Split the brake lines (many have asked)
I just finished reading this thread for the the fourth or fifth time. One question i have is, does it make a difference if you split the system front/rear vs front right left rear/ left front,right rear as I believe newer vehicles are?
|
10-16-2012, 08:13 PM | #17 |
Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,940
|
Re: HOW TO: Split the brake lines (many have asked)
yes it makes a differenence - do NOT do what you just mentioned. Aft port (closest to the firewall) goes to front brakes, forward port (closest to grille) goes to the rear brakes.
I won't swear by it - but I've never, ever heard of any vehicles, new or old, being plumbed the way you just mentioned. But definitely not correct for these trucks. Excellent safety question, glad you asked! Big safety implications. |
10-16-2012, 09:28 PM | #18 |
Registered User
Join Date: Jun 2012
Location: East Haven, Ct
Posts: 14
|
Re: HOW TO: Split the brake lines (many have asked)
Thank you for the quick reply
|
10-17-2012, 02:21 AM | #19 |
Registered User
Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,358
|
Re: HOW TO: Split the brake lines (many have asked)
JrJc66, Actually a lot of cars do use a diagonally split braking system like you described. It's very common on front engine, front wheel drive cars. They don't have very much weight over the rear wheels so the rear brakes alone often aren't enough to safely stop the car if the front brakes were to fail. With the diagonally split system, at least one of the front brakes will still be working.
At first, it seems like that would be a good idea for a pick-up truck too since they don't have a lot of weight over the rear wheels either when they're not carrying a load. But from what I understand it's not done (or recommended) because the front suspension/wheel design usually has a positive scrub radius that would cause the truck to pull hard to the outside with only one front brake working. Cars with diagonally split braking systems are all designed with a negative scrub radius so they'll pull to a stop straighter (in theory anyway) with only one front brake working. |
05-03-2016, 07:54 PM | #20 |
Registered User
Join Date: Jan 2016
Location: westchester ny
Posts: 107
|
Re: HOW TO: Split the brake lines (many have asked)
So I finally got to doing my swap over today. Took me a good hour of driving around getting more fittings to make it happen. Couldn't find the proper plug for the T so I just eliminated it and used a union. Anyway, I got everything in and bench bled the new master with no problems. I measured the new master and the depth of where the pushrod goes in and it was identical to old one. So I assumed I didn't need to mess with pushrod. I didn't get a chance to bleed the brakes yet but currently have no pedal whatsoever. Is this a bad sign?
|
05-03-2016, 08:04 PM | #21 |
Registered User
Join Date: Feb 2008
Location: Sidney,b.c.
Posts: 4,425
|
Re: HOW TO: Split the brake lines (many have asked)
an unbled system will have no pedal
ron |
05-03-2016, 08:15 PM | #22 |
Registered User
Join Date: Jan 2016
Location: westchester ny
Posts: 107
|
Re: HOW TO: Split the brake lines (many have asked)
That's what I was hoping to hear. I'll report back once I've bled it all out. Thank you for the response.
|
05-12-2016, 04:17 PM | #23 |
Registered User
Join Date: Oct 2013
Location: Shelbyville, IL
Posts: 111
|
Re: HOW TO: Split the brake lines (many have asked)
I did this conversion to a 64 a few years ago and last year to my current 64. I hooked everything up like in the thread mentioned. I never did get the pedal height I like. I have done a little research and in my 1971 Chilton manual under the Camaro/Chevelle section there is a drawing of a "typical" 67-70 master cylinder. It shows the front port to the front wheels and the rear port to the rear wheels. It states- "Since 1967, a dual type master cylinder is used. The front portion of the master cylinder supplies hydraulic pressure for the front wheels. Pressure for the rear wheel brake application is supplied from the rear portion of the master cylinder." I just switched my lines and have more pedal now. I still have to re bleed the lines because I may have gotten some air in while switching the lines. I'm using a 70 truck booster/mc set up.
__________________
1948 Chevy 1/2T 1964 Chevy 1/2T stepside short bed 1939 Pontiac coupe Street Rod 2005 GMC 1/2T short bed |
05-12-2016, 10:06 PM | #24 |
Moderator
Join Date: Dec 2012
Location: ON, Canada
Posts: 2,156
|
Re: HOW TO: Split the brake lines (many have asked)
That's what Captainfab has always posted, too.
|
05-12-2016, 10:11 PM | #25 |
But Found Her 25yrs Later!
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,522
|
Re: HOW TO: Split the brake lines (many have asked)
I'll have to try switching mine.
My pedal height isn't what I'd like it to be.
__________________
I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
Bookmarks |
|
|