Villiers headgasket

kerabo on Mon Oct 23, 2017 1:02 pm

Anyone ever wondere why the Villiers headgasket has an extra hole in it?

I have just found out.

Ken

mike Sayer on Mon Oct 23, 2017 1:34 pm

Ken,
Answer 1 :- so you can hang it up on a convenient nail in your outside "dunny" next to your wad of newspaper squares?
Answer 2 :- I give up Ken, tell us please!
Mike. Embarassed

kerabo on Mon Oct 23, 2017 1:37 pm

Seems the decompressor vents through the head and through that hole and through a drilling in the barrel into the exhaust port.

Ken

bill2b on Mon Oct 23, 2017 3:09 pm

Have you been on Facebook Ken? Very Happy

kerabo on Mon Oct 23, 2017 4:06 pm

bill2b wrote:Have you been on Facebook Ken?

May have been Smile

piston 197 on Mon Oct 23, 2017 4:29 pm

Pre war engines and AMC competition engines decompress to atmosphere, 6E,7E,8E,9E,10E,11E,32A and 37A decompress to the exhaust port when fitted with a decompressor so if using the decompressor option the action is silent., There is an angled drilling in the head which aligns the decompressor with the hole in the gasket ( if fitted the correct way round) and the vertical drilling into the exhaust port.
JH

kerabo on Mon Oct 23, 2017 4:38 pm

piston 197 wrote:Pre war engines and AMC competition engines decompress to atmosphere, 6E,7E,8E,9E,10E,11E,32A and 37A decompress to the exhaust port when fitted with a decompressor so if using the decompressor option the action is silent., There is an angled drilling in the head which aligns the decompressor with the hole in the gasket ( if fitted the correct way round) and the vertical drilling into the exhaust port.
JH

Well done John
It all makes sense.
Just when you think you understand things something new comes along Smile

Ken