porting and polishing heads

[NewStangNewbee]

How much is it to port and polish heads?

 

[bdcardinal]

depends on how much porting you want done and who does it. also location matters for price.

 

[Avenger]

Haven't personally dealt with them but I heard great things about Steen Racing

 

[bierbelly]

Don't waste your money. I'm not convinced that you really get much if any gains out of P&P, and it's expensive to take off/put on the heads...I was going to say if you don't do it yourself, but considering all the new headbolts, gaskets, etc, it's even kinda expensive to do it yourself.

 

[tangerine]

it isn't that bad porting and polishing heads. I am in the process of trying to develop a new type of non PI head. I am trying to change the ports and stuff around to see if I can get some good gains out of it. I would like to invent a new type of head for the 4.6 since that department is lacking now. I had some extra heads laying around and I was just bored so I decided to hack them up and try something new.

 

[twogts4us]

it isn't that bad porting and polishing heads. I am in the process of trying to develop a new type of non PI head. I am trying to change the ports and stuff around to see if I can get some good gains out of it. I would like to invent a new type of head for the 4.6 since that department is lacking now. I had some extra heads laying around and I was just bored so I decided to hack them up and try something new.

"Develop a new type of non PI head"??? "Changing the ports and stuff around"??? "Invent a new type of head for the 4.6"???
My hat's off to ya if you have the knowledge, R&D funds or resources, machinery, tools, testing facilities, etc. But I think you gave it away when you used the words "hack them up".

 

[tangerine]

what I am doing is trying out different types or port sizes and styles and puttingthem on a flow bench to see if the velocity will rise and how many more cfms they will push. You can laugh all you want but just because you don't have the brains to try something new doesn't mean that I don't.

 

[SMRcalidiv]

a friend of mine says that he was told his p&p'd non pi heads flow better than pi heads, something seems fishy about this though...

 

[twogts4us]

what I am doing is trying out different types or port sizes and styles and puttingthem on a flow bench to see if the velocity will rise and how many more cfms they will push. You can laugh all you want but just because you don't have the brains to try something new doesn't mean that I don't.

No, you've got it backwards - I've got the brains NOT to try hacking a pair of heads.

 

[bdcardinal]

a friend of mine says that he was told his p&p'd non pi heads flow better than pi heads, something seems fishy about this though...

yes he is true, there was a writeup in MM&FF i think in which they showed the cfm numbers on ported NPI heads compared with PI heads and they were higher. until you port the PI heads that is.

 

[FallenPhoenix]

what I am doing is trying out different types or port sizes and styles and puttingthem on a flow bench to see if the velocity will rise and how many more cfms they will push. You can laugh all you want but just because you don't have the brains to try something new doesn't mean that I don't.

:worship: can I test the first production set?

 

[cobra killer]

Don't waste your money. I'm not convinced that you really get much if any gains out of P&P, and it's expensive to take off/put on the heads...I was going to say if you don't do it yourself, but considering all the new headbolts, gaskets, etc, it's even kinda expensive to do it yourself.

Hmm..How about 267rwhp- 289TQ to 323rwhp and 324TQ with race ported heads on a low compression 99 GT..That convince you?

yes it is expensive tho....


Tim

 

[WOT]

You tell 'em homo

 

[SMRcalidiv]

that was the point i was trying to make, sure you might get some decent numbers on a seriously worked non pi head vs. a stock pi head but then thats it, at least the pi head gets you a nice chunk of hp right off the bat and then you could port them, but nooo, to each his own i guess

 

[Defleshed]

Hmm..How about 267rwhp- 289TQ to 323rwhp and 324TQ with race ported heads on a low compression 99 GT..That convince you?

yes it is expensive tho....


Tim

when you say race ported heads, do you mean for race use only, aka not-street legal due to emissions? or are you just using that term meaning heavily ported? I'm extremely interested in a head swap, any more info you could tell me would be fantastic. can you throw out a price in a round about ball park?

 

[smokin'Red35th]

yes he is true, there was a writeup in MM&FF i think in which they showed the cfm numbers on ported NPI heads compared with PI heads and they were higher. until you port the PI heads that is.

please explain to me how the 99 stangs got a 45hp jump when ford put on the pi heads, if the non-pi heads flow better. and why would they be called performance improved heads if they dont perform as well as the non-performance improved heads. None of this makes any sense to me. will someone please clarify or provide a link to where this info came from?

 

[SMRcalidiv]

i think the keyword was "ported" non-pi heads flow better than stock pi heads

 

[smokin'Red35th]

gotcha

 

[Jake795]

Don't forget about the COP ignition system, and different cams and intake. I'm sure that helped add that 45 extra hp

 

[bdcardinal]

ya ported NPI heads flow better than stock PI heads. also the PI intake in substantially better than the NPI intake manifold.