1959 G12 cylinder head type
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jebauer
- Posts: 1
- Joined: Tue Jan 18, 2022 11:39 pm
- Location: Colorado USA
1959 G12 cylinder head type
Can anyone tell me what year was the Matchless G12CS cynlinder head changed to the one with the three vertical fins? My 1959 G12CS motor has the version with these three fins. Did the factory change these heads in mid year, or toward the end of the 1959 production year? Thanks in advance for any info.
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SPRIDDLER
- Member
- Posts: 8559
- Joined: Wed Sep 01, 2004 1:00 am
- Location: WEST SUSSEX UK
Re: 1959 G12 cylinder head type
Welcome to the club and forums, John.
Have a look at the details of changes to twins in the article link below.
It would seem that the change to the fins occurred in the 1960 models which would have been produced from September 1st 1959 (i.e. after the factory annual August holiday shut down).
See here:
https://www.jampot.com/article_read.asp?id=20
Have a look at the details of changes to twins in the article link below.
It would seem that the change to the fins occurred in the 1960 models which would have been produced from September 1st 1959 (i.e. after the factory annual August holiday shut down).
See here:
https://www.jampot.com/article_read.asp?id=20
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Which taken at the flood............'
Which taken at the flood............'