Corvair DiagramCorvair Photo
Corvair Center
home forum corvairs calendar links Corvair Podcast
California Corvairs
Clarks Corvair
Clarks Corvair
“CORSA"



Chevy Corvair License Plate
Chevy Corvair Chrome Wheel
Corvair Center Forum :  Corvair Center Phorum The fastest message board... ever.
Corvair Center 
Pages: 12Next
Current Page: 1 of 2
The Source - Dual Master Cylinder - Any info?
Posted by: kmart356 ()
Date: May 04, 2018 09:52AM

The Spyder currently has a Dual Master Cyl as installed by P.O. I found the Invoice (1/17/2008) from The Source, Inc but the only description on it is:
US Dual MC 1962-6 Pass. w/o AC

My plan is to convert to front discs and researching what I have before swapping out. Does anyone have any thoughts on what diameter this Dual MC might be? Photo is a bit blurry but might help with ID.

Ken
'62 Spyder Coupe
Florida

Attachments:
Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: NebraskaDave ()
Date: May 04, 2018 12:58PM

Hi Ken, any chance that it’s this one from a 62-66 El Dorado? Just a guess.

[m.ebay.com]

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: kmart356 ()
Date: May 04, 2018 01:28PM

Wow! Good eye, it looks like the same one. Thank you sir!

Ken
'62 Spyder Coupe
Florida

Attachments:

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: Timothy Shortle ()
Date: May 04, 2018 04:17PM

I see David Harren every year in Palm Springs at the Toss. Though he is not really active in his former business
(The Source) he always seems to show up and make an appearance.

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: JimBrandberg ()
Date: May 05, 2018 04:58AM

For right side exit, I use a Dodge master cylinder with 1" ports. Raybestos 36237.
For left side exit, I use a stock 68-69 Corvair master cylinder with 1" ports. Raybestos 36233.
There is a left side exit with bigger reservoirs available for Corvette non-power brakes with 1" ports, Raybestos 36367.

I use the right exit on EMs because there's a little more room. I use the left exit on LMs and pass underneath the master cylinder.

I don't know what The Source used but would guess it's the Dodge one above.

Jim Brandberg
Isanti, MN
CorvairRepair.com.

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: Wagon Master ()
Date: May 05, 2018 06:27AM

Matt, could these useful part numbers be moved to the appropriate place in our FAQ's?
Thanks

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: kmart356 ()
Date: May 05, 2018 07:08AM

JimBrandberg Wrote:
-------------------------------------------------------
> For right side exit, I use a Dodge master cylinder with 1" ports. Raybestos 36237.
...snipped...
>
> I don't know what The Source used but would
> guess it's the Dodge one above.
>
> Jim Brandberg
> Isanti, MN
> CorvairRepair.com.

Excellent info Jim, thank you. Do you know of one that fits EM and is 7/8" instead of 1" bore?

Ken
'62 Spyder Coupe
Florida

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: JimBrandberg ()
Date: May 05, 2018 07:39PM

No I don't know of a 7/8.
One thing I'd be concerned about is whether a 7/8 would have enough volume to operate in case of a failure in one of the circuits. A 1" barely does it, the pedal almost goes to the floor. I don't know that it wouldn't be okay, it just might be a good idea to test it.
I can't take too much credit, I got the information for the Dodge one on this forum a few years ago and the Corvette one on this forum last year.
The latest idea I got here which I haven't tried yet is to drill the new hole for rear brakes behind the original instead of sideways to it. That way the length of the line can stay the same, you don't have to go back and forth to use up the now extra length.

Jim Brandberg
Isanti, MN
CorvairRepair.com

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: BobV66Vair ()
Date: May 11, 2018 06:43AM

I don't mean to hijack but I have just installed the rear disc brakes on my 65. It had front disc brakes and I just added the rears. The pedal was weak with the front only disc's but now I can't get a pedal. I have fully bleed the system several times. No leaks but cannot get a pedal. It comes in an inch from the floor and is not great. I adjusted the push rod out for more length but no discernable improvement.

Reading about the bore size, I had a 1" on it and that didn't do the job. I put a smaller bore on it thinking I would get better pressure. Neither seems to work right. Anyone have any ideas? Maybe someone knows a part with a larger than 1" bore?

Bob Vinnacombe
Sandy, Oregon
1965 Corsa 140 stock
1966 Monza Soon to be race car
1968 Monza Parts for now

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: MattNall ()
Date: May 11, 2018 07:40AM

Larger bore! 1-1/8"





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: Ed Dowds ()
Date: May 11, 2018 11:40AM

1 1/8 used on 68-82 vettes with power brakes.

Ed
Hillsborough, NJ
66 500 rear 4.3 V6 Corvair
69 350/350 TH Camaro was RS
30 Model A Ford Streetrod 350/400 TH
88 Celebrity Wagon (Daily Driver)

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: BobV66Vair ()
Date: May 11, 2018 11:58AM

Thanks, I'll try that. No spec's on bore on the Oreilly's website. I call and ask them to measure one.

Bob Vinnacombe
Sandy, Oregon
1965 Corsa 140 stock
1966 Monza Soon to be race car
1968 Monza Parts for now

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: JimBrandberg ()
Date: May 12, 2018 05:35AM

I have Raybestos catalogs and look through them when I'm researching. Perhaps they are available online. Separate catalog for 78 and earlier.
Jim Brandberg
Isanti, MN
CorvairRepair.com

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: BobV66Vair ()
Date: May 12, 2018 10:36PM

I found a nice MC with a bore of 1.2". Exact fit for the Corvair. 1968 Cadillac with power disc brakes.

Bad news is I still could not get it bled. Nate Wolfe came over and bailed me out on a couple other things and then helped me bleed the brakes. Went through the top end and still no pedal. Finally, I noticed brake fluid leaking from the brass "T" block under the dash. Turns out the flare in that fitting is bad and it leaks. Clarks shows them but they may be gold plated given the cost.

If anyone has one that's still good, I would prefer it. PM me and I'll work it out with you. Its from a 68 Coupe so it looks like 1/4" into the top and two outlets of 3/16". It goes to the front two wheels.

Bob Vinnacombe
Sandy, Oregon
1965 Corsa 140 stock
1966 Monza Soon to be race car
1968 Monza Parts for now

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: MattNall ()
Date: May 12, 2018 10:58PM

Bob get a Copper Conical Flare Seal NAPA should have them or know who locally does!







MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: BobV66Vair ()
Date: May 13, 2018 09:44AM

I may try to use the old one from the car, which has good conical flare seals. I should be able to get new brass fittings and I have Cunifer line and flaring tool. Hate to pay Clarks price but it is obviously a part no one else has.

Anyone know if that brass T was used in other GM cars?

Bob Vinnacombe
Sandy, Oregon
1965 Corsa 140 stock
1966 Monza Soon to be race car
1968 Monza Parts for now

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: jjohnsonjo ()
Date: May 13, 2018 11:00AM

Did you try the small copper washers in the flair that are made to correct slight imperfections? They have worked for me.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

Image and video hosting by TinyPic

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: BobV66Vair ()
Date: May 13, 2018 02:43PM

Didn't try them. I don't know where to get them. The leak looks to be from a distorted flare and shredded threads into that hole of the block. I don't want to spend the $33 from Clarks but I think as a safety item, I should use a new one.

Bob Vinnacombe
Sandy, Oregon
1965 Corsa 140 stock
1966 Monza Soon to be race car
1968 Monza Parts for now

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: jjohnsonjo ()
Date: May 13, 2018 03:55PM

[www.corvair.com]

Read the description and use

Clarks has them, but you can get them almost anywhere

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

Image and video hosting by TinyPic

Options: ReplyQuote
Re: The Source - Dual Master Cylinder - Any info?
Posted by: jjohnsonjo ()
Date: May 13, 2018 04:15PM

[www.bing.com]

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

Image and video hosting by TinyPic

Options: ReplyQuote
Pages: 12Next
Current Page: 1 of 2


Sorry, only registered users may post in this forum.
This forum powered by Phorum.