Yeah, I knew the prop we ran was too small. It had a 12 x 8 on it when we first cranked it up but it wouldn't come up on the pipe and I couldn't change the header length at the field. That's when we played with the prop and found the 11 x 7 hit good. I plan on reworking the header a little bit and going back to the 12 x 8 or so.

The header and the pipe haven't been touched or cut to this point. It's set so the baffle is right at 18.5" (if I remember correctly) without cutting anything. I'll have to play with it once I get it on it's feet again and settle on a prop.

I'll jack up the oil to 18 to 20% as suggested and go with that.

First build for me, and first piped engine so the learning curve is taking control right now.

Great information guys. I will change a couple things up while it's on the bench and see what we get. Thanks for all the good advise.

Paul