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Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: VairKing ()
Date: August 29, 2010 02:08PM

Just got done doing this, its easy to do, even easier if you know how to make your own brake lines, which I did. I had lots of fittings on hand, so you will need to use your new master cylinder and your friendly parts guy to get the correct size adapters to make 3/16" lines work.

Parts needed:

Dual master cylinder for a '67 Camaro w/ all drum brakes
Advance Auto Parts # 10-1505 $15.99 + $5.00 Core charge = $20.99
3/8-24 double flair plug (like $2)
3/8-24 double flair interconnect, with 2 female ends.
12" piece of 3/16" brake line, I used the poly coated stuff mentioned in a previous thread and it bends very nicely without use of a bender.
Brake Fluid

_________________________________________
Ryan Counterman (Moderator)
1965 Corsa Kelmark V8 400 HP ///1965 Monza Sedan 110/PG /// Ultimate Corvair Hauler/// Don Eichstaedt's 1965 Corsa Racecar
West Michigan Corvair Club /// New Build! 1966 Corsa GTP Convertible Mid Engine 3.8L Supercharged!




Edited 1 time(s). Last edit at 08/29/2010 02:19PM by VairKing.

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Re: Dual Master Cylinder Conversion done for less than $30!!
Posted by: VairKing ()
Date: August 29, 2010 02:11PM

First remove old master cylinder. I chose to drill my hole for my rear brake line right in front of where the old brake line is. Clarks has you drill it way over towards the center of the car. Either way it doesnt matter. Here is my Double flare tool, made by Snapon. The harbor freight ones usually will not work.

_________________________________________
Ryan Counterman (Moderator)
1965 Corsa Kelmark V8 400 HP ///1965 Monza Sedan 110/PG /// Ultimate Corvair Hauler/// Don Eichstaedt's 1965 Corsa Racecar
West Michigan Corvair Club /// New Build! 1966 Corsa GTP Convertible Mid Engine 3.8L Supercharged!

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Re: Dual Master Cylinder Conversion done for less than $30!!
Posted by: VairKing ()
Date: August 29, 2010 02:17PM

Next mount the new master cylinder and route your new line for the rear brakes through the new hole, and thread the line onto the front port of the new master cylinder. Now wedge yourself up under your dash, and remove the brake line going to the rear brakes. Plug the hole you just removed it from with the plug, then thread the 2 lines (one new from the master cylinder, the other old going to your back brakes) I put this union inside the car, Clarks has you put it out in the trunk. Either way is Ok.

_________________________________________
Ryan Counterman (Moderator)
1965 Corsa Kelmark V8 400 HP ///1965 Monza Sedan 110/PG /// Ultimate Corvair Hauler/// Don Eichstaedt's 1965 Corsa Racecar
West Michigan Corvair Club /// New Build! 1966 Corsa GTP Convertible Mid Engine 3.8L Supercharged!

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Re: Dual Master Cylinder Conversion done for less than $30!!
Posted by: VairKing ()
Date: August 29, 2010 02:19PM

Put a grommet on the new line, and bleed all 4 brakes, and you are done! Easy right?!?! Takes me about an hour to do such a conversion.

_________________________________________
Ryan Counterman (Moderator)
1965 Corsa Kelmark V8 400 HP ///1965 Monza Sedan 110/PG /// Ultimate Corvair Hauler/// Don Eichstaedt's 1965 Corsa Racecar
West Michigan Corvair Club /// New Build! 1966 Corsa GTP Convertible Mid Engine 3.8L Supercharged!

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: tampatexan ()
Date: August 29, 2010 03:21PM

I put the new fitting behind the stock one. I had a extra factory block, so I used that. Cost me about the same as yours.

Free Image Hosting at www.ImageShack.us


Free Image Hosting at www.ImageShack.us

Jim Houston
'65 Corsa

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: Mike J ()
Date: August 29, 2010 03:23PM

Really? That looks pretty slick. I have a dual m/c from a '67+ Corvair already. Just needed to see the underside to make some lines & changes. Right on - thanks.

Mike J
Northern Calif
Rescue, CA

65 Corsa ~ Sold !!
www.fquick.com/MikesGarage

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: gwydionjhr ()
Date: August 29, 2010 03:24PM

I was going to chime in about the doubling up on the factory fitting as well. Nothing looks as good. And yet, when was the last time someone saved that piece out of a 'vair they were scrappin'....?

Regards,
Joel Rushworth
1961 Rampside w/Deluxe Scamper Camper
1966 Corsized Cdn Monza Coupe
1967 UV #292
"Kick the Hell out of the Status Quo" - Ed Cole

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: 62corvan ()
Date: August 29, 2010 03:48PM

Great post Vairking. Thanks for pics and easy instructions. Will save this to the Vair file on my desktop.

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: c17flyer ()
Date: August 29, 2010 04:01PM

Both are nice pieces of work! I like the Texan version better only because I want to still use my washer bottle and it looks like he made that happen. I really do want to convert my single to a dual as well and have purchased the '67 and later bracket and just need to get it powder coated to look as nice as the rest of the trunk.

John
Olympia, WA

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: flamingchariots ()
Date: August 29, 2010 04:29PM

Looks great!

Could someone post a picture of the fitting that goes through the firewall (and is attached to by nuts)? Not quite sure what that looks like...

Kevin
Medina, OH

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: Radio Joe ()
Date: August 29, 2010 05:38PM

When I stripped a 67 it had a proportioning valve on it. I bought a new master cylinder for a 67 and planned to install it all. Do we not need the prop valve?

Laurens, SC

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www.joesclassiccarradio.com

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: MattNall ()
Date: August 29, 2010 06:23PM

Joe.. not a PP valve... it's a SWITCH... "brake warning light" [ loss of pressure on either side].





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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

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: 65Cvair ()
Date: August 29, 2010 06:37PM

I used the brass connector as a bulk head connector. Cut a small brass nut into a thin slice and made the connection at the firewall.

Keith Hammett

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: sura ()
Date: August 29, 2010 07:49PM

With the dual MC did you notice any increase in pedal effort?

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: upnorth1 ()
Date: August 29, 2010 08:08PM

THANKS FOR THE TUTORIAL!!!

The photos really help. I am switching my LOADSIDE to the dual system, got he Camaro MC at o'reillys, close to same price.

happy braking! ggg

Chaplain Bob
135 miles from Canada

AT THE TIP OF LAKE SUPERIOR
1961 Loadside 95hp. 30 over bored and stroked. 145 block, 165 heads 4 speed
1966 Corsa clone 140 4 speed, 30 over.
1966 4 door 110 pg soon to return to factory 140 PG

DON'T mess with Old Men, we didn't get old by being, STUPID!!!

\/ this is a half mile from my house... \/

Click for Hermantown, Minnesota Forecast

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: gwydionjhr ()
Date: August 29, 2010 08:17PM

Bob,

With the FC's clearance for the lines against the frame rail is a bit of an issue. Choose the drum/drum dual MC that has the greatest difference between the centerline of the ears, and the centerline of the ports.

Regards,
Joel Rushworth
1961 Rampside w/Deluxe Scamper Camper
1966 Corsized Cdn Monza Coupe
1967 UV #292
"Kick the Hell out of the Status Quo" - Ed Cole

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: 63spyder ()
Date: August 30, 2010 07:05AM

I helped install a kit fromk clarks, it worked great but there was increased pedal pressure. I wonder if the stock dual cylinder system ran smaller slave cylinders to compensate?

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: sweet66monza ()
Date: August 30, 2010 07:14AM

The 67 (now Matts) had a bit more pedal pressure than all of the 66s. IMHO I perfer the feel of the 66- single master cylinder

Cody Hurley
North Idaho (Post Falls)
66 Monza convertible 140/PG, loaded with factory options
66 Corsa factory turbo coupe, 3rd owner fully documented [corvaircenter.com]
65 Monza coupe daily driver 110/4
66 Monza 95/PG coupe project FOR SALE
Also 2 Ford f350 IDI diesels, six Jeep FC 170s, 66 CJ5A, 03 neon, 4 Rokon Trailbreakers, 3 vintage Honda 50cc minibikes, 4 Honda xr350s, and thousands of parts


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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: finks500 ()
Date: August 31, 2010 02:46PM

Will this work on early & late models the same

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Re: Dual Master Cylinder Conversion done for less than $30!!hot smiley
Posted by: ubuck ()
Date: September 01, 2010 08:24AM

finks500 Wrote:
-------------------------------------------------------
> Will this work on early & late models the same


All except the real earlies (60-61). MC inside~

Brian
63 Monza Convertibile Sprint Clone
64 Monza Coupe Sprint Clone
65 Monza Convertible
66 Corsa Convertible
69 Grand Prix Model J
2004 SSR


South Holland, IL

Corsa/CCE



"Let's agree to respect each others views, no matter how wrong yours may be." Ashleigh Brilliant

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