if anyone has removed the swirls out of these heads, how far down did you grind them. here is a before and after pic of what i've done so far

 

heres the after

 

mmm fuzzy

 

anbody? i know a couple of people have done this. please any help on how far to grind them down would be appreciated.

 

Yeah, I'd like to know too. I'm pulling mine next month and want to do something to help them breath better. TTT for ya.

 

I took more than that out of mine, I had wanted to find a scrap head somewhere and section it on a bandsaw at work so I could tell how far I could go without hitting a water jacket but I was unable to locate a scrap head anywhere.

 

dartbyu what did you use to do it with? i've been using a dremal with a grinding stone and i don't think that i can get all that far down.

 

I used a 1/4" air grinder with a short extension I made and several different shaped carbide burrs and polished them smooth with grinding stones and cartridge rolls, a Dremel is not really a good choice for doing any deep pocket porting because they are not rugged or powerful enough but you can buy small carbide burrs for them that will work better than the stones will for getting the material off, the stones are good for finishing work.

 

thanks for the info dartbyu. but ruffly how far past the center post did you take it down?

 

you need to discover the highspeed cuttoff drum.

stones suck...