Disappointing dyno results

ch1ll said

You forgot to add in the area for the valve relief eyebrows.

Did you check piston to deck height with a depth micrometer?

And on the subject of cylinder pressure, did you have a 5 angle valve job done and have the valves lapped in?


I know I’m throwing a lot of **** at you, but I want to see you get through this. Success at your first engine build is important for your future builds and rebuilds.

Also its important to smoke chevies and fords at all opportunities given.

Click to expand...

Valve relief was 6.8 cc as advertised and included in calc. That number came from manufacturer. Are not eyebrows part of relief or am I not understanding?

Piston to deck height was done with a straight edge. You can poke fun a me on this one for it was an estimate. Looked flush to me.

Valve job question for the builder. Will ask next time I see him.

I appreciate your involvement. Really would like to see this through to the end. I sit here trying to think what it could be but no ideas other than take engine apart to verify cam install for everyone. That's going be very difficult to convey. And if it's correct, which I think it is; I'm back where I started.