17-09-2024, 07:46 PM
As it happens I lifted the head on my car this afternoon.
It runs a 1.5" Phoenix crank with Tony Betts' slipper pistons, a Ruby head and a high compression gasket. I've not reduced the height of any pistons and they come right to the top of the block. No difference in any of the markings or carbon on the 4 piston tops and no witness marks visible despite revving to 6,500- 6,750 at times.
I suspect that some people (especially on social media) parrot what they've read without first hand experience.
Charles
It runs a 1.5" Phoenix crank with Tony Betts' slipper pistons, a Ruby head and a high compression gasket. I've not reduced the height of any pistons and they come right to the top of the block. No difference in any of the markings or carbon on the 4 piston tops and no witness marks visible despite revving to 6,500- 6,750 at times.
I suspect that some people (especially on social media) parrot what they've read without first hand experience.
Charles