Can fox lake port NPI heads?

[98blackstallion]

I couldnt find anything on there site about them being able to port NPI heads....can someone help me?

 

[Dog bite]

Porting

Usually, porting is porting. If they can port one head and have the "proper" instruments, flow bench and know how, there shouldn't be a problem.

PI and NPI heads are not different enough to restrain them from porting either one.

 

[mogs01gt]

Yes they can. They can port any head, I saw them working on a tractor engine head.

 

[98blackstallion]

alright thats cool cause i want mine ported...so that way my compression doest get to high and i might be able to S/c the motor later without worry about having to high compression..

 

[1992 2.3LX]

how much would it cost to get heads ported?

 

[Dog bite]

Compression?

I'm not sure porting NPI heads will lower compression though.

Usually, the air passage way is ported, not the cylinder wall or area where the valves are... With PI heads, swirl dams can be cut down to bring the compression back to "normal" when swaped on pre-99 2Vs.

 

[mogs01gt]

it would only effect compression if they touch the combustion chambers and you would have to specify that you want that done.

 

[1992 2.3LX]

i believe he is saying he would like to get his NPI head ported instead of doing a PI swap because the PI swap will raise compression and porting the NPI's will not.

 

[98blackstallion]

1992 2.3LX,

you are correct sir....thats my reasoning

 

[Gearbanger 101]

And very sound reasoning it is.

 

[98blackstallion]

i look at it like this: If i was to do the PI head swap that cost somewhere around $700-800 to do it right but it raises my compression to like 10.5:1 and then i can say byebye to the thought of a blower. OK i can take my NPI heads and have them ported and add a PI intake for not much more and i can still be able to supercharger the car without worries. From what I have heard is that PI and NPI heads flow close to the same stock so why not just ported the NPI heads and still be able to supercharger without ripping the motor down and sticking in different pistons...I mean dont get my wrong thats a good idea but when I set my budget I didnt want to have to break the motor down but instead push it close to its limits while maintaining a safe air fuel mixture and preventing detonation....I think I have set a good reasoning for doing this..

 

[Gearbanger 101]

Yep and not to mention your ported NPI's will also outflow stock PI's and are able to support more than enough power to overwhelm the stock internals. So a head flowing higher than that is unnecessary anyway.

 

[1992 2.3LX]

don't forget the PI Cams!

 

[DropTopPony]

check out steenracing.com they have a package for npi heads. and a good reputation.

 

[Jd200287gt]

PI cams are hardly better than NPI cams, get VT's while youre in there and youre set

 

[Mike97gt]

I couldnt find anything on there site about them being able to port NPI heads....can someone help me?

why port the non pi's the only thing i can think of is maybe you don't want the added compression with the PI heads.. if this is not a problem.. get a set of PI's and port those..

 

[Gearbanger 101]

why port the non pi's the only thing i can think of is maybe you don't want the added compression with the PI heads.. if this is not a problem.. get a set of PI's and port those..

That's exactly why he doesn't want to go with the PI heads. Besides....ported NPI's will flow more than enough for his set up anyway....so why drop another $600-700 on a set of PI's when it's unessary? Bigger isn't always better dude.

 

[Mike97gt]

That's exactly why he doesn't want to go with the PI heads. Besides....ported NPI's will flow more than enough for his set up anyway....so why drop another $600-700 on a set of PI's when it's unessary? Bigger isn't always better dude.

bigger is'nt always better is true depending on what he wants from the car... the PI head is a better starting point.. but after i posted i read that he wants too supercharge the car at some point.. so yeah i agree he should go with a good port job on the stock heads.. well that is if he keeps the stock pistons...

but if looking for the best performance wise without a blower.. i would get a set of PI's port those and get cams.. not PI cams... atleast VT stage 2's

but if i was going with a blower.. i would port the NPI heads (keep the compression down with the stock pistons) and go with a set of cams for a blower motor..

 

[98blackstallion]

yep i am gonna stick with the stock pistons and internals and I am gonna shoot for 400 rwhp