Decompressor

[Veg]

I’ve finally managed to remove the decompressor valve having soaked the head for a week. I’ve tried to clean it, however really it needs stripping apart. Is this possible? The reason is as soon as I put it back in and you kick it over it makes a tweet sound
as though it’s leaking. It’s an odd size not a normal plug size thread etc, if not possible to strip can you still get them? I’ve emptied Gary.
thanks for all your ongoing support to this Greeves/villiers newbie

[John Wakefield]

Put the original head back on, a de-compressor has no real use on a trials bike, although some riders used them for engine breaking in sections, they were also used on the Bond Minicar and vehicles fitted with a Siba Dynastart to reduce load on starter motor.

[Veg]

Unfortunately John the original head is a 200 hence why I got a 250, I’ve had conflicting advice re decompressors some swear by them, especially in low speed descents.

[John Wakefield]

Villiers services do a blanking plug but its expensive at ?23 plus vat and postage https://villiersservices.co.uk/produ...pressor-blank/ but probably cheaper that finding a good de compressor plus cable and operating lever.

[whitehillbillies]

Same as fitted to my RE350 bullet I believe?
decompressor - Mickey Spares

whitehillbilly

[IanCordes]

They help prevent the engine from stalling and locking up the back wheel in slow speed slippery descents.Greeves never fitted them on their ali top ends, though.

[Veg]

That’s interesting as I’ve measured mine and it’s 17 mm so the Enfield one doesn’t fit, (I know it’ll be imperial). I may get the head machined and get one fitted. TBH down hill I deffo need it in tricky sections, trying to balance braking, clutch etc without one is a challenge for one with little talent such as myself.