Rough is the new smooth

Should work nice with that MP590 cam

Just wait until that thing meets a .690 cam and its mushroom lifters

Reminds me of the saying one of the head co. used fast as cast.

For sure hope to share dyno numbers as soon as we can

Waiting on a few parts.

And a few more billet parts need made😉

Awesome piece of working art. are you aiming for 2hp/CI ?

are those rough ports really ok ? would that keep the fuel from dropping out of suspension because of turbulence ? remember, i'm the dummy here.

Surface Finnish is so far down on the list of what matters in a cylinder head.

I think maybe you could change what port is doing by a small margin with surface finish.

But most of the time a rough finish will make more power than smooth.

thank you for your response. with a slight "tootsie roll" cleanup, would anything be gained, other than a "good look" to the port ? if i were doing this, it would make me feel good just going over the finish with a 60 or 80 grit roll.

What are the bronze looking spots in the intake and exhaust ports.

you know at 1st I was going to say Valve guide, then I noticed what I think your asking about, in the Exhaust pic it's off to the right side on the wall across from the stem?

the guides perhaps ? that's what i [ahem] ASSumed ......

i just thought that mark was some left over dykem.

Or excess assembly lube from the valve stem.

Do you have the same thoughts on surface finish as Larry Meaux and Chad Speier now?

Other than my CNC stuff I have let carbide finish for years. ( I am no good with sand rolls and no patients for it)

I know Lary has done a good bit of back to back testing and his results show more power with rough finish.

But again finish is way down on the list of important "stuff"

I sand rolled the chambers because I can do them quick and it looks nice. 😂

Should have just left them in carbide.

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Some sand roll vs carbide

Thanks. Always interesting to see your work.

Headers should be finished up this weekend for the dyno.

Lenny is working on them. (Owner of the engine)

Do the latest run of heads come with the top four head bolts drilled? Or did you have to do that yourself?

No we did a program for that and Jesel rocker bar attachment.

We hope to be getting RAW castings with HIP process done

Then my buddy can cube them and we will change the stuff we don't like about the heads.

Edelbrock has been un-receptive to changes we would like to have made.