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Information relating to the Matchless G5 or AJS Model 8 350cc Lightweight
cbranni
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Joined: Sat Oct 09, 2010 9:17 pm
Location: SWANSEA UK

Re: top end

Post by cbranni »

Hi Robert, I may have a used one if that will do

Colin
only dead fish go with the flow
red_dog49
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Joined: Fri Mar 08, 2013 12:03 pm
Location: DERBYSHIRE UK

Re: top end

Post by red_dog49 »

hi, that would be great I'll happily make a donation or swap for anything I may have of use to you, I have been trying to find one
without success.pm me for address etc.
rob.
red_dog49
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Location: DERBYSHIRE UK

Re: top end

Post by red_dog49 »

hi, when I removed the head I found a small 'o'ring had been used to seal the rocker oil way hole has anyone else done this as it doe's not appear in the parts list.
Rob.
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Janet
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Joined: Mon Jan 01, 1996 12:00 am
Location: EAST YORKSHIRE UK

Re: top end

Post by Janet »

I haven't. There are no recesses in the flat surfaces of either the barrel or cylinder head and diameter of the hole in the gasket isn't big enough to fit round an o-ring and it definitely shouldn't be pushed inside the hole. Surely it would prevent the head gasket lying flat between the two parts?

I think that's the only place my engine wasn't leaking form and I've taken it apart. :(
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Mick D
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Location: Aberdeenshire

Re: top end

Post by Mick D »

Hi

There's no reason not to do this provided:

The O ring is sized to match the thickness of the head gasket plus compression.

The head gasket hole at this point is corrected for the OD of O ring used.

The O ring is of a material capable of withstanding the heat.

Or it could just be re-built as per design without the additional seal, I'd opt for this.

Regards Mick
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Janet
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Location: EAST YORKSHIRE UK

Re: top end

Post by Janet »

Further to my previous post, I've just unearthed another barrel and this one does have a very slight recess round the hole.
le
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Ozmadman
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Location: ESSEX UK

Re: top end

Post by Ozmadman »

No o ring on a 350 that is why it isn't in the parts list
Paul
1960 Model 8
1974 Yamaha RD250B US Model 6 speed
red_dog49
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Joined: Fri Mar 08, 2013 12:03 pm
Location: DERBYSHIRE UK

Re: top end

Post by red_dog49 »

universal compressor spring tool arrived this afternoon, head re-assembled and ready to fit back on tomorrow, if I can avoid, swmbo.
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