acid porting a bbc 781 head

[Chris "drooze" Wertman]

I agree last set of heads I did full port to took 40+hrs a week for over 3 weeks. And Im pretty good....albeit slow, but man did they flow, they were on the chev 302 I was spinning at 10k...

Great heads, but they werent cheap, as in the trip to the doctor for the metal dust that had embedded in my lenses , superfine and in my hair, then into my eyes, the actual pain was from the metal slicing the insides of my eyelids, Now wear a hat when porting But I kinda like the fact you CANT in stock elim, its something I dont have to do.........Its REALLY hard to sit still when the doc comes at your eye with a magnetic needles and says "Hold Real Still" before explaining what he was going to do......he was in a hurry had a "hot lunch date" hey at least he was honest.....

Originally Posted by Al Kuehl

The only reason to use acid is to cover up any grinding that has been done on the head's . If you are building a motor for a GT class in Super Stock it is legal to port the head's so there is no reason to use acid . 15 hour's of hand porting doe's not even seem like a good start maybe 150 hour's would be more like it . That's why good head's are so expensive . If you are from Division 1 talk to John Armstrong or Tom Boucher or sombody like that they will steer you in the right direction .

Al