Wessex100 Posted May 10, 2021 Report Share Posted May 10, 2021 Hi All Putting together a 8E trialer. Have obtained a two hole head however one of the holes is oversized. I always thought the decompressor was same size as standard plug. Anyone know if this is any use for my build, or simply use the standard head. Thanks in advance Quote Link to comment Share on other sites More sharing options...
teamferret Posted May 10, 2021 Report Share Posted May 10, 2021 it was probably stripped, it was common at one point to open out rethread and put a slave in. Now it would be helicoiled Quote Link to comment Share on other sites More sharing options...
Wessex100 Posted May 10, 2021 Author Report Share Posted May 10, 2021 Good point. That could be the answer. Thanks Quote Link to comment Share on other sites More sharing options...
Chesty Posted May 11, 2021 Report Share Posted May 11, 2021 I've got a feeling the Villiers decompressor thread is bigger than spark plug size, if it's the same as a 32A I've got one in the garage somewhere, I'll seek it out tomorrow. I'm just up the road from you in Fontmell..... Quote Link to comment Share on other sites More sharing options...
Wessex100 Posted May 12, 2021 Author Report Share Posted May 12, 2021 Wow . That would be great. Quote Link to comment Share on other sites More sharing options...
Chesty Posted May 12, 2021 Report Share Posted May 12, 2021 So the 32A decompressor I have has a thread of 0.700 inch (od) or 17.80mm in new money, and is 18 tpi as best as I can make out. Villiers Services do sell a blanking plug to take the valves' place if you don't want to use one, but they're handy on muddy drops! Quote Link to comment Share on other sites More sharing options...
Wessex100 Posted May 12, 2021 Author Report Share Posted May 12, 2021 Thanks for the effort. Will take a look this evening. If suitable are you selling? Quote Link to comment Share on other sites More sharing options...
Chesty Posted May 12, 2021 Report Share Posted May 12, 2021 I've sent you a PM. Quote Link to comment Share on other sites More sharing options...
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