14 mm decompressor Valve

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rudge250
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Joined: Mon Nov 20, 2017 8:57 am
Bike: Montesa

14 mm decompressor Valve

Postby rudge250 » Tue Dec 05, 2017 4:38 pm

try as I may I cannot find any information on adapting a 14 mm Valve to the threaded spare hole in the Cylinder head of my 247 T Cota. The Head thread hole is approximately 11 mm and probably Metric. Will it safely tap out to 14 MM ?
Or is an adaptor available somewhere ?. Thanks Sean
:D :NSW:
P.S After many hours the Electrics are now working, were a total mess !!! Speedo opened and repaired, waiting for a Cable from the UK. Chain Guard on order fro Germany ,, metal.



rudge250
Junior participant
Junior participant
Posts: 6
Joined: Mon Nov 20, 2017 8:57 am
Bike: Montesa

Re: 14 mm decompressor Valve

Postby rudge250 » Wed Dec 06, 2017 4:04 pm

:NSW: :D Hole taped out to 14 mm ok. made a tap from an old Spark Plug. Apparently the thread pitch is not std. and peculiar to 14 mm plugs ,so says internet search ?




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