backyardhack
New member
When checking the cc of an assembled BSP engine per AKRA rules is the spark plug hole plumbed vertically or is the head gasket surface held flat?
What is the cc volume that it must hold without spilling out? Can it reach the top of the threads but not go any further?
I am aware that there is a $20 cc tool but haven't been able to find anyone selling it recently. How much difference is there between using the tool and just using the plug threads providing they have not been modified?
What is the cc volume that it must hold without spilling out? Can it reach the top of the threads but not go any further?
I am aware that there is a $20 cc tool but haven't been able to find anyone selling it recently. How much difference is there between using the tool and just using the plug threads providing they have not been modified?