Sounds like pinking but it ain't

[Eibar]

Got a strange problem in that when coming off the power, I get a metallic sound almost like pinking but it only happens when engine ain't under load. Definately coming from the top end. I was thinking it could be small end failure. Anyone got any thoughts ???????????????

[Soulpunk]

can be 'everything'.
more infos on engine required..
can be a faulty original dansi-flywheel, a wrong head / squish, wrong timing,..etc..

[Eibar]

Mugello V1 squish and timing are spot on, however runs a v3 head (higher compression than V1). However this is a relatively new sound and has been fine albeit top end pinking due to head compression being too high. Gonna get head reprofiled to reduce compression ratio ( cambridge lam don't do V1 muggy hads no more). I was just curious as to this coming off the power rattle that I've developed , as in has anyone else had a similar problem