Do it yourself porting on Non-PI heads....?

[Gearbanger 101]

Anybody able to point me in the direction of some good “How to” articles in regards to porting a set of Non-PI heads. I just picked up a ’96 Cougar and would like to give it the once over. I considered the PI head and intake swap, but a roots supercharger is in the works down the road, so the intake would have to come off anyway and I'd like to keep the compression ratio, boost friendly. I’m great with porting the stock E7TE 5.0L heads but am still a bit of a cherry as far as the mod motor is concerned. Whatever you got would help, I’m sure….thanks again guys

 

[HIGDON]

Well the basic gasket matching, short radius, valve guide, and polishing the exhaust port/combustion chamber work are pretty much the same. The main thing is the vertical emissions shroud on the intake vavle that needs to be laid back and blended into the chamber. If you are going to be doing all this work you should consider having PI intake valves put in and a good seat job done. The main point of porting the NPI head is to increase it's low lift number because it already outflows the PI head at the higher lift (.500 and above). Not too sure about any site with a "How to". . .

 

[Gearbanger 101]

Yeah, sounds like you read the article in the last issue of MM&FF too. I guess i'm just a little shaky about it since they're not as easy or cheap to come by as E7TE's (5.0L heads) in case you screw them up.

 

[HIGDON]

I'm about to port a set of PI heads that I bought. Sure I'm a bit "nervous" about puttig them under the knife, but I know i will enjoy the benefits. I am going to start with the lightest abrasive I can that will take off material and give me the surface I want and just take my time. I'm not doing much other than the basics really. I got my info from the June 2004 5.0 Mustang and amazingly I retained it, lol. I wish I had it to look at, my roomate flooded the bathroom floor and ruined my two latest Mustang mags.... If you do screw one up you are in luck because the NPI heads can be had for like $100 each, maybe less.

 

[Lostcause]

If your able too,check out the June of 2004 issue of 5.0 Mustang Magizine. It discusses some porting on non P.I. heads.