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PI or Port & Polish?


Discussing PI or Port & Polish? in the 96-98 Forum. im going to wyotech in blairsville, pa. they let me bring my car in to ...

       

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Old September 29th, 2007, 01:58 PM   #1
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PI or Port & Polish?

im going to wyotech in blairsville, pa. they let me bring my car in to work on and i want to either port and polish the heads or get pi heads. any suggestions?
 

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Old September 29th, 2007, 02:59 PM   #2
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do a pi swap and then port and polish those then you'll get the best of both but as for money wise just pi swap because you dont wanna fuck up a set of heads... ya know what i mean??
 
Old September 29th, 2007, 04:26 PM   #3
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depends on your plans for the car. ie...do you want a power adder later on
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Old September 29th, 2007, 09:24 PM   #4
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honestly as much as i'd love to, i'll probably end up not supercharging it, unless i hit the lottery or something lol...so you guys think i should just go with the PI heads? cause the school im going to i could easily port and polish my stock heads there, if its worth it
 
Old September 30th, 2007, 08:44 AM   #5
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if thats the route you want to go, port and polish your PI heads.
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Old September 30th, 2007, 11:15 AM   #6
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NPI heads respond better to porting and polishing i think.
Ask boomer, he knows.
 
Old September 30th, 2007, 11:21 AM   #7
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ported pi ftw.

if i remember i read that ported npis do flow better with a cam with a lift of .550 or greater but cause ptv issues with the stock pistons requiring new pistons, and the ported pis will still give you a better downlow grunt...
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Old September 30th, 2007, 12:56 PM   #8
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Originally Posted by nes
ported pi ftw.

if i remember i read that ported npis do flow better with a cam with a lift of .550 or greater but cause ptv issues with the stock pistons requiring new pistons, and the ported pis will still give you a better downlow grunt...
That is incorrect, lift has nothing to do with PTV, it occurs in the low lift areas. The piston is almost 3" away at the point of max. lift.
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Old September 30th, 2007, 12:58 PM   #9
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so now that ur here Napolean, care to explain which is better? again
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Old September 30th, 2007, 01:20 PM   #10
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yea before i go out and buy a pair of these. future plans include a junkyard supercharger if i dont get the heads if i do im going bottle fed
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Old September 30th, 2007, 02:28 PM   #11
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i tell ya what i think boomer should do is write us up a sticky. because this npi vs pi head thing comes up way to often. and boomer knows more than any of us do about these heads. He has his own porting and polishing business. I am currently using him now for my fox body heads, and am gonna use him in the future, when i start to heavily mod the sn95. Many other ppl here have used him and have great results.
 
Old September 30th, 2007, 02:31 PM   #12
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make a sticky!!!!!

join us
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Old September 30th, 2007, 02:34 PM   #13
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everyone that wants boomer to make us a sticky about the NPI vs PI heads and porting and polishing chime in here and just type.....




Sticky Boomer!
 
Old September 30th, 2007, 02:35 PM   #14
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Stick it in Boomer.......i mean Sticky Boomer
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Old September 30th, 2007, 05:15 PM   #15
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yea sticky boomer
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Old September 30th, 2007, 08:41 PM   #16
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Originally Posted by Boomer
Originally Posted by nes
ported pi ftw.

if i remember i read that ported npis do flow better with a cam with a lift of .550 or greater but cause ptv issues with the stock pistons requiring new pistons, and the ported pis will still give you a better downlow grunt...
That is incorrect, lift has nothing to do with PTV, it occurs in the low lift areas. The piston is almost 3" away at the point of max. lift.
welp proven wrong. so what causes the ptv problems?
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Old September 30th, 2007, 09:36 PM   #17
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Originally Posted by nes
welp proven wrong. so what causes the ptv problems?
When the duration is so long that the valves are still open when the piston is high enouhg in the stroke that they hit. It also has to do with the lift while at that duration.

Sticky Boomer ( if he is willing to write it, he sucks at the internet! )
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Old September 30th, 2007, 09:49 PM   #18
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if he would ever get his ass online!
Since having his baby girl, hes been really busy.
 
Old September 30th, 2007, 09:54 PM   #19
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Originally Posted by ujslost
if he would ever get his ass online!
Since having his baby girl, hes been really busy.
it'll be a good learning experiance for her though.....u gotta start them young these days
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im gayer than 2 boys fucking
 
Old September 30th, 2007, 10:01 PM   #20
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Originally Posted by 96GTRagTop
Originally Posted by ujslost
if he would ever get his ass online!
Since having his baby girl, hes been really busy.
it'll be a good learning experiance for her though.....u gotta start them young these days
What? Wat learning expirence? This is his 3rd or 4th! lol
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