Porting small block 915 j-heads

Porting small block 915 j-heads

:)

'63GT said
I am assuming the numbers next to 'lift' is corresponding millimetres in the made up manometer? 890 mm = 35" H20 , 364 mm = 14" h2o ?
Although those numbers can't be converted into CFM, we can see your baseline max flow of 413 mm @ .450" is now at .200" on the ported version. Given no valve job has been done, I would call that a success!

You are right there. Forgot to add millimeter after the numbers. I assumed you guys would understand and you did.

Where will the bigger valve and valve job show?
Valve job from ,200” and down?
Bigger valve all over the readings?

I for sure will have to take the heads to a real flow bench to get a receipt on the results

Cudafever said
That's how i made my first bench, as the hole get bigger the inch of water go down as you only have a set volume.
It will get you hook and cause you to make the next step when you realize it short comings.
don't get me wrong you can lean a lot. A lot more then if you had no measuring stick.:)
If you count that one i have had 3 flow benched. but i consider that one as just a get your feet well exercise.
quick simple and most important vary inexpensive to build.:thumbsup::thumbsup:

Cheap but yet taking some time to do.
Mostly done on working time :):thumbsup: