Rocker Arm Interchangeability?

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
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Peter Lecompte
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Posts: 163
Joined: Sat Aug 15, 2009 12:52 pm
Location: QUEENSLAND AUSTRALIA

Rocker Arm Interchangeability?

Post by Peter Lecompte »

Hi all,
Just putting a question forward about using the 1952 Rocker Arms (inlet and exhaust) in a 1957 Rocker Box and in the build of a 1957 G80 engine. The books show different part numbers between 1952 and 1957. Can it be done? And what is the physical difference between the the 2 sets of Rocker Arms?

Cheers
Peter
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dave16mct
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Joined: Mon Jan 01, 1990 12:00 am
Location: LANCASHIRE UK

Re: Rocker Arm Interchangeability?

Post by dave16mct »

I would say yes you can use them, but the later arms have grooves for better lubrication of the pushrod ends.
Dave.
Peter Lecompte
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Posts: 163
Joined: Sat Aug 15, 2009 12:52 pm
Location: QUEENSLAND AUSTRALIA

Re: Rocker Arm Interchangeability?

Post by Peter Lecompte »

Hi Dave,
Thank you. I am going to take a Rocker Box apart now and do the comparison between the Rocker Arms in that box and the other set I recently purchased.

Cheers
Peter
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