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MGB clutch Master Cylinder

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MGB clutch Master Cylinder #1
GMATS GERALD MATLIN palm beach gardens, FL, USA Sign in to contact 1965 Ford Mustang 1978 MG MGB 1978 MG MGB V6 Conversion	Topic Creator (OP) Jul 22, 2014 03:32 PM Joined 11 years ago 502 Posts

By now, since I have posted more than a few questions about my build many of you know I am putting a 60 degree Chevy V6 in my '78 MGB. Actually it is already installed. (pic below) My question of the moment has to do with the clutch MC.

I am using an '84 Camaro non-WC V8 transmission and HTOB. From everything I have read I am confident the stock Clutch MC will work just fine but I am confused regarding which one to buy. The prices seem to be all over the map from $35 to $175 yet all of the MCs are the right size with the right bore. Do I go with the cheapest, the middle of the road or spend the bucks and get an original MC? I do not want to have to change the MC five hundred miles or five months down the road.

Anyone with real world experience who can steer me in the right direction or away from the wrong direction please chime in and tell me how and where to spend my money on a clutch MC.

As usual, thanks in advance.

engine install 5.jpg 40.1 KB

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Re: MGB clutch Master Cylinder #4
canuck David Ross Tampa, USA Sign in to contact 1978 MG MGB V6 Conversion "New Baby"	Jul 24, 2014 08:07 AM Joined 18 years ago 2,203 Posts

I prefer to rebuild if I have a good candidate. I have been generally lucky with MC and front calipers with my rebuilds. Rear wheel cylinders are a crap shoot and they are cheap to buy anyway. I have purchased new or probably rebuilt somewhere MC,s that were bad out of the box. I would go with a MC from somebody like NAPA or Discount Auto that offers a big over the counter exchange warranty, just in case you get a lemon down the road. MC's installations are always a PITA because of all the bleeding and taking case not to mess your paint up.

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Re: MGB clutch Master Cylinder #5
hanker Hank R Denver, CO, USA Sign in to contact 1972 MG MGB 1974 MG MGB MkIII	Jul 24, 2014 08:43 AM Joined 12 years ago 601 Posts

If your MC is not rebuidable, match your old one up with something that will work. A lot of after market MCs won't fit your 78 pedal box. There's not much room for a reservoir. I don't think Moss Motors after market MCs are that pricey and they have one that would fit your car.

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Re: MGB clutch Master Cylinder #6
Perdido Rut Rutledge Tuscaloosa, AL, USA Sign in to contact 1960 Austin-Healey Bugeye Sprite "Scarlet" 1962 Triumph TR4 1966 Triumph TR4A 1966 Triumph TR4A & more	Jul 24, 2014 09:37 AM Top Contributor Joined 16 years ago 5,263 Posts

Gerald,
You might want to look at the Tilton 74 series of MCs. They have the same bolt pattern and you can use an attached or remote reservoir and although it's a tight fit thru the front hole it will fit. Kits are cheap and easy to replace and they are excellent quality.
Rut

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Re: MGB clutch Master Cylinder #7
dbandel David Bandel Glenwood, MD, USA Sign in to contact 1967 MG MGB GT 1974 MG MGB	Jul 24, 2014 07:56 PM Top Contributor Joined 13 years ago 1,373 Posts

OK since I have been asking lots of stupid questions lately I'll ask one here in this thread too - do you know what the correct bore and displacement is for a stock MC? I think the bore on my original was 7/8" but I also have heard some replacements may be 1"? I ask as I am collecting parts for my swap also. Thanks!

-David

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Re: MGB clutch Master Cylinder #8
BMC Brian Mc Cullough Minneapolis, Minnesota, USA Sign in to contact 1959 Austin A40 Farina 1959 Austin-Healey Bugeye Sprite 1959 Morris Minor 1000 Pickup 1961 Austin-Healey Sprite "Green Sprite" & more	Jul 24, 2014 08:11 PM Top Contributor Joined 24 years ago 6,907 Posts

We purchase from the various large suppliers. The only unit I do not care for from these companies is the unit that VB sold about 5 years ago or so that had a large plastic reservoir. This will interfere with other items and be distorted as the cap is installed. Not sure if they still sell it.

-BMC.

BMC British Automobile www.bmcautos.com

Minnesota's only Fully Dedicated British Classic only shop providing Professional Restoration & Services & Specialty Products including- proper L.E.D. tail lights, Wiring looms and Engine and five speed Conversion Kits

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Re: MGB clutch Master Cylinder #2
dbandel David Bandel Glenwood, MD, USA Sign in to contact 1967 MG MGB GT 1974 MG MGB	Jul 22, 2014 07:26 PM Top Contributor Joined 13 years ago 1,373 Posts

Re: MGB clutch Master Cylinder #3
GMATS GERALD MATLIN palm beach gardens, FL, USA Sign in to contact 1965 Ford Mustang 1978 MG MGB 1978 MG MGB V6 Conversion	Topic Creator (OP) Jul 22, 2014 07:52 PM Joined 11 years ago 502 Posts

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MGB clutch Master Cylinder

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