Mild home head porting advice .

-
MOPAROFFICIAL said:
What kind of advice ?
Work the straight side ssr just off the seat to a more vertical shape than the buldge it is and at the last 1/3 from the top...ever so slightly lay it back and leave a lip, don't round the top of the ssr to the floor, you want a definitive steep ramp.
Thin the guide, shorten its height about 5/16 and grind the guide tail to mimic the set angle.
Open the rest of the bowl , keep it a little smaller than the seat, use the throat cut to guide you and leave an even .100 of throat cut for now, don't grind too much on dogleg side of bowl, go straight up from throat cut on straight side of bowl.

Hard to put it into words, so be conservative. Tall is good, laid back too far is bad that you cannot come back from.
Click to expand...

Say's the guy that has done it before and knows the names of everything.:D
To a guy that isn't familiar with it you might as well had been speaking a foreign language.
 
MOPAROFFICIAL said:
Though out of the spectrum, you can include the slant 6 heads in the "work the floor for more" approach.
Click to expand...
Lol, I was about to post that, ...and Whooop! There it is!!
And to follow, I cut a peanut-plug casting up and there is barely over .100" where the corner of the guide spot-face in the pocket is adjacent to the long-side water jacket.
Try to shorten the guide too much & then go Bowl-Hog happy & You're busted for sure..................
 
yellow rose said:
If I had to port with an electric grinder, I'd quit. I use air, which is a pain in the *** but I get a much better finish.

Either way, you have to have some way to slow the grinder down depending on materiel, tooling and desired finish.

I almost never use a stone but I do have them. I always start with a carbide and finish with a paper roll.
Click to expand...
Agreed, except after hours of porting My case of "cold hand" wasn't even alleviated by a shop rag wrapped grinder, break-time!!
I also use a shop rag wrapped around the shank of the long burrs to help control & even brake them for control. But that end gets hot after a bit, one hand hot, one hand
cold.......................
 
I'll be finishing a stage 2 308 and x894 head.
I'll see about doing a thread. Gotta have someone take the pictures or it kills my flow.
 
You must log in or register to reply here.
-

Back
Top