compression on 9:6:1

[ben10]

it picks out a set resonant frequency of the cast steel block. when its over a sertian amount of db it retards. i am not worryed about knock. i am sure i have non.. this is only a temp engine any how heck it i may get it rollered at a bar of boost just to see how it goes

 

[5e colin]

it picks out a set resonant frequency of the cast steel block. when its over a sertian amount of db it retards. i am not worryed about knock. i am sure i have non.. this is only a temp engine any how heck it i may get it rollered at a bar of boost just to see how it goes

sure let us know how u get on man love to see when the rod or gen1 piston cracks first