Model 20 split skirt original pistons

Information relating to the Matchless G9 or AJS Model 20 500cc twin
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moley
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Posts: 559
Joined: Sat Jan 01, 2000 12:00 am
Location: EAST SUSSEX UK

Model 20 split skirt original pistons

Post by moley »

Hi all

I have got some original split skirt pistons and I have the barrels rebooted to suit

I am querying if the split skirt should go at the rear or front of the engine ?

Also I think 6-9 thou would be the piston ring clearance ? Do you agree

Any help would be appreciated
Ta

Andu
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GSAX1
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Posts: 971
Joined: Wed Sep 14, 2005 1:00 am
Location: NORWAY

Re: Model 20 split skirt original pistons

Post by GSAX1 »

moley wrote: Sun Jan 23, 2022 5:59 pm Hi all

I have got some original split skirt pistons and I have the barrels rebooted to suit

I am querying if the split skirt should go at the rear or front of the engine ?

Also I think 6-9 thou would be the piston ring clearance ? Do you agree

Any help would be appreciated
Ta

Andu
The split should be at the side with the lightest load, at the front of the engine.
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