Unleaded Head
Turbo Mini Forums

Hi, Just had a search but couldn't find an answer, How can you tell if a cylinder head has been converted to take unleaded fuel? I've bought a 12G295 off ebay and am unsure if it is compatible.

If not, where do you suggest sending it for the conversion?

Thanks

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0

Take a valve out and look for an insert in the seat.

If its not unleaded, don't bother to get it converted.

In the 13's at last!.. Just

This should help;


Are the rings around the piston seats where the inserts have been fitted?

Edited by Mike-998 on 9th Feb, 2012.

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0

Those rings are the normal machining marks on the standard leaded head.

I got Turbo Phil to fit unleaded exhaust valve seats in my latest head. I'm running unleaded seats in a standard 12G295 head on my current 998 Turbo.

I would say that head needs a minimal skim to clean it up as well.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Thanks, I'll drop him a PM

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0