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Lockheed Boosters

Posted by trymes

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Lockheed Boosters #1
trymes Tom Rymes Concord, NH, USA 1959 Riley 1.5 1969 MG MGC GT ~ For Sale ! ~ 1971 Jaguar XJ6 Series 1 1971 MG MGB GT 1972 Chevrolet C20	Posted: April 06, 2012 12:18PM Registered: 4 years ago Posts: 3,228

My car's PO received the car without any boosters, as they had been sent out for a rebuild and never reunited with the car. As a result, I have two Lockheed boosters, one installed under the bonnet, and one floating around behind the back seat. They have the casting number 3232656C, which seems to cross reference to a Mini, of all things.

Is this the Lockheed unit that others have used on their MGCs?

Tom

PS: I am aware of the other alternatives out there, I'm just trying to figure out what I have before I go any farther.

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Re: Lockheed Boosters #2
ga duke Mike Dooley Newnan, GA, USA 1969 MG MGC GT	Posted: April 06, 2012 03:45PM Registered: 5 years ago Posts: 349

Tom:

I have a small instruction sheet that I can review later with the Lockheed numbers for the MGC.

Also provides installation requirements regarding inclination angle etc.

If someone else provides this sooner, OK.

M

Tom:
Can't speak to the casting number w/o looking at the one's I have, but the Lockheed number for the booster assembly w/ installation kit isLE10117, original girling p/n 64049354. The servo p/n is LN18221.
I'll need to scan the installation sheets before I can send them.
M

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Re: Lockheed Boosters #3
kirks-auto robert kirk Davenport, Iowa, Rock Island, Illinois, Clearwater, USA	Posted: April 09, 2012 08:42AM Registered: 4 years ago Posts: 13,090

There are different sizes offered and the sizes are often confused or confusing...7 inch and 9 inch...the smaller is used on 4 cyl under 2L anything bigger is the larger. Lockheed makes both sizes but yours are wantonly too small to be effective. Girling is the OEM supplier of the larger units used on Tiger, Healey, a host of Ger. cars and all the Italian exotics. PBR makes an updated replacement for the proper Girlings and would be my preference to use as replacements for either Lockheed or Girling remote servo.

Regards,
Robert Kirk
kirkbrit@yahoo.com
563 323 1017
Moss distributor UK importer
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Re: Lockheed Boosters #4
trymes Tom Rymes Concord, NH, USA 1959 Riley 1.5 1969 MG MGC GT ~ For Sale ! ~ 1971 Jaguar XJ6 Series 1 1971 MG MGB GT 1972 Chevrolet C20	Posted: April 09, 2012 08:58AM Registered: 4 years ago Posts: 3,228

Thanks, guys. I was at Sports Car Services this weekend picking up some parts and was able to compare my Lockheed with some others, and it appears to be one of the smaller ones that folks in the UK generally use in a single-line MGB system. I'm tempted to just send the blasted things out to Power Brake Exchange in San Jose and install them. I figure if they work to stop an MGB, they ought to stop an MGC. Then again, I don't want to spend $550 or so just to find I need to buy something else.

I hear you on the PBRs, BTW, Robert, but they are more than a small investment. That's not to mention that I am really drawn to the idea of using the original Girlings, seeing as how everything else in the engine bay is pretty much stock. I understand that the Girlings are likely to require a rebuild much more frequently, but....

Time will tell. She stops fine as-is with unassisted brakes for now. My right leg is getting a bit beefier, too!

Tom

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Re: Lockheed Boosters #5
trymes Tom Rymes Concord, NH, USA 1959 Riley 1.5 1969 MG MGC GT ~ For Sale ! ~ 1971 Jaguar XJ6 Series 1 1971 MG MGB GT 1972 Chevrolet C20	Posted: April 09, 2012 12:00PM Registered: 4 years ago Posts: 3,228

These look to have been discontinued, but maybe they will stock more?

Has anyone ever seen/used one?

http://www.s-v-c.co.uk/product/dual-remote-servo/

Tom

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Re: Lockheed Boosters #6
ga duke Mike Dooley Newnan, GA, USA 1969 MG MGC GT	Posted: April 09, 2012 09:56PM Registered: 5 years ago Posts: 349

Tom: Check your email for servo mounting info.
M

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Re: Lockheed Boosters #7
kirks-auto robert kirk Davenport, Iowa, Rock Island, Illinois, Clearwater, USA	Posted: April 11, 2012 01:24PM Registered: 4 years ago Posts: 13,090

Just spoke with Ellis King one of my first PBR customers 13 or so years ago....still stopping as well as when he installed them...fwiw....

Stick with known brands when it comes to Servos. Once you get used to power brakes have a sticking/non working servo accerlates the issues I have spoken. The link you provided was to some made in Spain and thay rapidly became problematic as I recall. There are some cheap China made 5.5s now on the market and a favorite of the shills and whatnot on ebay. As yet, I know of no major US vendor going that route and I suspect, the are sticking to the 5.5 and not doing the 7s for fear of ramifications should the larger unit cause on a larger car...a blend of facts and a little speculation....fwiw.

Regards,
Robert Kirk
kirkbrit@yahoo.com
563 323 1017
Moss distributor UK importer
Beat or match any retail/delivered quote

How to advertise on this website

Kirk's Auto Parts for your classic British and Italian car. 30 years in business.

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Re: Lockheed Boosters #8
Swamperca Swamper CA Nor Cal, USA 1969 MG MGB GT "Rat" 1969 MG MGC GT "A 69 MGC" 1970 MG MGB GT "Widow" 1971 MG MGB "Ruby" 1974 MG MGB "Groovy B"	Posted: April 11, 2012 04:00PM Registered: 8 years ago Posts: 7,658

If I were you I'd not waste the money on rebuild of the wrong units and buy a couple of Roberts offerings.

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Re: Lockheed Boosters #9
ga duke Mike Dooley Newnan, GA, USA 1969 MG MGC GT	Posted: April 11, 2012 10:10PM Registered: 5 years ago Posts: 349

Tom:
Finally got to look at the casting number on the Lockheed servos that I have...it's the same as yours.
Doesn't mean much though; a raw casting can be bored to many sizes as long as the wall thickness is adequate.
If you'll look at the document I sent you, it lists the pressure ratios associated w/ the different applications; I think a function of the bore and the diaphram diameter. A guy sells Lockheed boosters on ebay, but don't know if the application is correct.
Also, most booster kits I've seen have brackets suitable for the rear booster only; you would have to fabricate your own for the front.
Haven't mounted mine yet, but this is my plan.

MikeDooley

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Re: Lockheed Boosters #10
Swamperca Swamper CA Nor Cal, USA 1969 MG MGB GT "Rat" 1969 MG MGC GT "A 69 MGC" 1970 MG MGB GT "Widow" 1971 MG MGB "Ruby" 1974 MG MGB "Groovy B"	Posted: April 11, 2012 10:27PM Registered: 8 years ago Posts: 7,658

If Roberts are really lasting 13 plus years this is the way to go.

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