G3L Head

Information relating to the Matchless G3 or AJS Model 16 350cc Heavyweight
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G3L Head

Postby Yak » Tue Nov 20, 2018 10:47 pm

https://www.ebay.com/itm/AJS-Matchless- ... Swo5lbJ306
HI.
Am searching for a head for my 1947 G3L and came across the above listing on ebay. My current head has only 7 fins where this has 9. I have a 500 iron head as well and this has 9 fins but the exhaust port has a spigot. The surface area for the barrel/head joint is also different, mine having a round ring joint only. Can anyone shed any light on this please.
Thanks
Ray

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Re: G3L Head

Postby 577typhoon » Wed Dec 05, 2018 12:25 am

Hi Ray, IMHO the 500 cast iron head is no good for your 48 G3L. From memory all cast iron 350 heads were the same from 1941 up to & including 1948. I can't say without checking in the garage how many fins there are on a 350 head but I think you are correct in saying there is no projecting spigot for the exhaust pipe to fit on.

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Posts: 117
Joined: Mon Jan 13, 2014 12:00 am
Location: SOUTH AUSTRALIA AUSTRALIA

Re: G3L Head

Postby Yak » Wed Dec 05, 2018 4:59 am

Thank you 57 typhoon.
The 500 head I have is for a G80 motor I am in the process of restoring? The head on offer appears to have characteristics of both the 350 and 500.
Ray

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