Some M1 porting pictures and flow numbers

Yea man. Looks cool as heck. Lots of work there. I’ve carved a few things, but nothing compares. I’d be more inclined to work on a what I’d guess we could consider a normal square bore intake than take a stab at this. The spreadbore shape and such things as how air flows is not really a personally well know item for me. I really am not sure how to attack that intake. Since you have done such work before, porting, your personal experience and understanding goes a lot further than a rookie’s best guess.

Sometimes, things are obvious, counterintuitive, or when pointed out because you have no idea, you then say, “Of Course!”
It’s not until you find out “Of Course!” Does it make itself apparent.

In the cylinder heads I worked on I’d have to say after viewing your work and talking with you here via PM’s on how to proceed, I made the jump. I fixed the heads and did what you showed and what you told me to do. They work, don’t leak oil, runs great, better than before. Home run all around. You really helped me out and in that helping, take away the nervousness of screwing it up badly.

The last thing that wanted to do was to screw them up.
There a bit pricey to purchase one just to experiment with.
One day I’ll try a full porting on a set of heads.