1952 M20

Information relating to the Matchless G9 or AJS Model 20 500cc twin
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G15 Roy
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1952 M20

Post by G15 Roy »

I am looking for photos of the inner faces of a pair of 1952 crank cases.
Roy
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ajscomboman
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Re: 1952 M20

Post by ajscomboman »

Are you still on about those bloody cases!! :headbang: :headbang: :headbang:
g80csp11
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Re: 1952 M20

Post by g80csp11 »

are you checking before you stamp 1952 on them ?
ajsph
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Re: 1952 M20

Post by ajsph »

Here are 2 photos of a 52 Crankcase
Poul
DSC01876_1.jpg
DSC01873_1.jpg
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ajscomboman
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Re: 1952 M20

Post by ajscomboman »

There you go Mr B, I did say to you earlier that I thought they'd have to be identical by the throat of the barrel and the rocker feeds. I just couldn't see how yours could be a matching set. Now you know they're not. I'm impressed you had pictures of a pair Poul, certainly helped confirm my suspicions.
G15 Roy
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Re: 1952 M20

Post by G15 Roy »

ajsph wrote:Here are 2 photos of a 52 Crankcase
Poul
DSC01876_1.jpg
DSC01873_1.jpg
Many thanks just what I needed .
Roy
ajsph
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Re: 1952 M20

Post by ajsph »

There are two types of timing side crankcase in 52 , the early one with vertical type oil relief valve is identical with the 51, and the later one with horizontal oil relief valve, a one year only, the one in the photo is the early one.
Poul
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