Richard@WCCH

iTrader: (3)

We use WD 40 for both carbide work and polishing. We buy it by the gallon and charge our own aerosol cans. Home Depot sometimes has sales and then it's pretty cheap. As for sharp edges around the valve seat are concerned, the only edges that should exist are the ones created by the multi angle seat cutters. The steel seat rings should blend smoothly to the valve bowl for optimal flow. The seat areas on these heads are very sensitive do to high flow activity. Be careful making changes in these areas!

Good luck,

Richard

xfactor_pitbulls

iTrader: (16)

This is a great thread for do it yourselfers on head porting. I have a set of 98 heads I am practicing on right now. When I am done with them I am going to cut them with the chop saw and do some cross sections for reference. I just bought the deluxe kit from standard abrasives and it has everything you need to do the job. Whomever said not to use flapwheels is crazy. How the hell are you going to evenly polish the combustion chamber?

Brandon

Hysteria

Use the Standard Abrassives cross buffs, not the flapper wheels, for polishing. Spray some WD40 on while you polish and you will have to get your sunglasses to look at it, super slick. I sand paper roll the combustion chamber, exhaust , and intake port. But I only cross buff the exhaust and combustion chamber.

Another_User

I'll second that. That's the only way I would want my heads ported.

Hysteria

Yes, good way to port a set of heads. But were is the fun? The adventure? The " I did it!"?

jimmyblue

iTrader: (11)

I was up at my mechanic's place tonight and asked him to
keep an eye out for a junk 241 head at the dealership,
and a couple of scrap valves too for seat protection. I
had the same chop-saw notion. It would be great to
have a "cat scan" of the LS1 head; put the slices on
the glass and we can all see just what's between the
runners and the water jacket.

LOnSLO

iTrader: (15)

Yep, it's a good thing to have a chopped head to examine before you start grinding. I learned alot from one.

Classic

iTrader: (3)

Try a junk yard or posting up on here. You can probably find a cheap trash LS1 head for almost nothing.

AGearHead4Life

iTrader: (5)

wow 8 years later... but JIK