G9 with G11 Barrels

Information relating to the Matchless G9 or AJS Model 20 500cc twin
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Re: G9 with G11 Barrels

Postby matg80s » Tue Feb 19, 2019 12:03 pm

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Last edited by matg80s on Sun Apr 07, 2019 9:35 am, edited 1 time in total.

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Re: G9 with G11 Barrels

Postby dave16mct » Tue Feb 19, 2019 12:50 pm

I think you might have trouble balancing the oilfeed to the rockers. Have a look in the Tech articles at 'Twins year by year changes'.
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Re: G9 with G11 Barrels

Postby raffles » Tue Feb 19, 2019 7:38 pm

I have been running a G9 with 6oo heads and barrels for the last fifteen years and 12,ooo miles. NO problems at all
Tony

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Re: G9 with G11 Barrels

Postby dave16mct » Tue Feb 19, 2019 7:53 pm

What year are the crankcases Tony?
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Re: G9 with G11 Barrels

Postby matg80s » Tue Feb 19, 2019 10:07 pm

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Last edited by matg80s on Sun Apr 07, 2019 9:36 am, edited 1 time in total.

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Re: G9 with G11 Barrels

Postby matg80s » Wed Feb 20, 2019 8:55 am

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Last edited by matg80s on Sun Apr 07, 2019 9:36 am, edited 1 time in total.

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Re: G9 with G11 Barrels

Postby raffles » Wed Feb 20, 2019 7:16 pm

Crankcases will need to be 1956 _on my own are 1958. Tony

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Re: G9 with G11 Barrels

Postby raffles » Wed Feb 20, 2019 7:25 pm

As an after thought the 600 crank is stamped with a 6 on top of the timing side web. In my opinion the vibration is no more than as a 500
.Tony

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Re: G9 with G11 Barrels

Postby matg80s » Wed Feb 20, 2019 10:19 pm

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