Threaded hole behind exhaust camshaft cap

Information relating to the Matchless G9 or AJS Model 20 500cc twin
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ducati2242
Posts: 69
Joined: Sat Jul 15, 2017 6:50 pm
Location: Durham

Threaded hole behind exhaust camshaft cap

Post by ducati2242 »

I have recently acquired a 55 G9 I have been busy with the powder coating of practically everything and have done little with the engine , untill now , I have had the crank reground at -20 new shells and mains and have started to re-assemble . It was in pieces when purchased so plenty of missing parts which I am slowly purchasing . I have found a threaded hole in the oil way near the exhaust camshaft that I'm stuck with . Internet is good but cant find out this problem , I think it must be some kind of oil metering jet but I am unsure of size or shape any help would be greatly appreciated . Guy

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ajsph
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Posts: 326
Joined: Mon Jan 01, 1990 12:00 am
Location: DENMARK

Re: Threaded hole behind exhaust camshaft cap

Post by ajsph »

in 55 there was a metering plug in the hole, and no alu distributor for the top end lubrication, but after a short time the factory send a service bulletin to the dealers, they had to remove the plug and fit the well known alu distributor.
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ducati2242
Posts: 69
Joined: Sat Jul 15, 2017 6:50 pm
Location: Durham

Re: Threaded hole behind exhaust camshaft cap

Post by ducati2242 »

Thats good as I have some of the bar type distributors . Was there anything else that needed changing or just a case of fitting the bar type distributor . Thanks for your information . Guy
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