NPI Build

DsmDave · May 13th, 2011, 04:44 AM

well guys I am coming to you for help. I have a PI motor in my car now and am swapping it for an NPI motor. Here is what I already know I will swap. I plan to go for a good nitrous/boost motor.

PI intake manifold swap
new gaskets all around
PI or a set of aftermarket cams price pending

any good pistons recommended? good set of rods? is it even worth touching the bottom end?

next question is can i use the harness with my NPI motor to use the coilpacks or just rip that shit off and use my COP harness?

cruizer · May 13th, 2011, 06:09 AM

If you still have your COP valve covers then you you should have no problem using your COPs and harness

DsmDave · May 13th, 2011, 03:00 PM

That's what I was hoping would swap over. I think cop is cleaner than the coil packs. I got a npi motor with 46k on it so I'm just gonna do a little budget build while I still drive my pi

sharkbait · May 13th, 2011, 03:02 PM

why are you putting a npi motor in? Whats the point?

No reason to mess with the bottom end on a npi motor. Its slow as ballz

DsmDave · May 13th, 2011, 03:05 PM

Its getting. A full pi swap and all bolt ons before it goes in. New gaskets and such. I think its easier to build this motor on a stand than in the car plus with a full tranny and motor it was only 400

97S281 · May 13th, 2011, 03:07 PM

$400? Damn, I'm NEVER gonna be able to sell my old motor.

sharkbait · May 13th, 2011, 03:10 PM

We can put it in my go kart

DsmDave · May 13th, 2011, 03:10 PM

I just got a good deal. I'm gonna part out the wire harness and Ecuador it came with a-d someno pi stuff to get some cash for mods.

97S281 · May 13th, 2011, 03:17 PM

Originally Posted by sharkbait

We can put it in my go kart

I would almost be willing to GIVE it to you just to see that.

DsmDave · May 16th, 2011, 09:38 PM

well here are some pics of my motor and new setup?

SWEET2KSTANG · May 16th, 2011, 10:20 PM

port the npi heads, cut the guides down, good cams, pi intake, and go. the npi heads are better flowing heads if you lift the valve .550 and helps with compression as well. any good name brand rod/pison would be good choice to get.

DsmDave · May 16th, 2011, 10:31 PM

im looking at just building this as my my motor to learn on before I do my 4v.

I planned doing the PI intake manifold swap. what would lifting the valves bring my compression to about? how weak is this crank? Will I be able to get 450 wheel safely on a blower?

SWEET2KSTANG · May 16th, 2011, 11:04 PM

the valves dont effect compression. the npi heads just flow little better about .530 lift if they are ported right and cut guides. as for the cranks, cast cranks will do 600rwhp all day long no porblem as long as tune is right.

DsmDave · May 16th, 2011, 11:09 PM

Thanks for the advice. That sounds like it willpower be more than enough for a few low 11 sec passes

SWEET2KSTANG · May 16th, 2011, 11:24 PM

depends on compression and set up. the npi head is plauged with larger umbustion chambers, so a s et of flat tops would be a good idea to get compression up. also think about future, if you go to a pi head then compression ratio will change drastically.

DsmDave · May 16th, 2011, 11:33 PM

I have a pi motor in my car now. This is being built as a boost motor so the lower the better for me.

May 13th, 2011, 04:44 AM	#1
DsmDave Enthusiast 2001 Mustang GT Join Date: Nov 2010 Location: Poughquag NY Posts: 979 iTrader: 2 reviews	NPI Build well guys I am coming to you for help. I have a PI motor in my car now and am swapping it for an NPI motor. Here is what I already know I will swap. I plan to go for a good nitrous/boost motor. PI intake manifold swap new gaskets all around PI or a set of aftermarket cams price pending any good pistons recommended? good set of rods? is it even worth touching the bottom end? next question is can i use the harness with my NPI motor to use the coilpacks or just rip that shit off and use my COP harness? __________________ bbk longtubes, bassani x, borla stingers, AM intake,bbk throttle body, Under drive pullies,Zex wet 125hp kit SCT Tuned by bama and drag radials, drag springs, agx shocks, lower control arms, subframe connectors MM+Cleavage Club #26

May 13th, 2011, 06:09 AM	#2
cruizer Regular 1998 Mustang GT 13.046@107.49 Join Date: Jul 2008 Location: Lapeer and Detroit, Michigan Posts: 443 iTrader: 0 reviews	If you still have your COP valve covers then you you should have no problem using your COPs and harness __________________ 98 Mustang GT 13.795 @ 98.87 N/A Main mods: PI Swap, 3.73 gears, E85 My Mark VIII and T56 swap

May 13th, 2011, 03:00 PM	#3
DsmDave Enthusiast 2001 Mustang GT Join Date: Nov 2010 Location: Poughquag NY Posts: 979 iTrader: 2 reviews	That's what I was hoping would swap over. I think cop is cleaner than the coil packs. I got a npi motor with 46k on it so I'm just gonna do a little budget build while I still drive my pi __________________ bbk longtubes, bassani x, borla stingers, AM intake,bbk throttle body, Under drive pullies,Zex wet 125hp kit SCT Tuned by bama and drag radials, drag springs, agx shocks, lower control arms, subframe connectors MM+Cleavage Club #26

May 13th, 2011, 03:02 PM	#4
sharkbait Hooo Ha Ha 1997 Mustang GT 11.65 @ 115 Join Date: Apr 2009 Location: Pasadena MD Posts: 9,743 iTrader: 10 reviews	why are you putting a npi motor in? Whats the point? No reason to mess with the bottom end on a npi motor. Its slow as ballz __________________ 410rwhp 520rwtq @ 12.9 psi

May 13th, 2011, 03:05 PM	#5
DsmDave Enthusiast 2001 Mustang GT Join Date: Nov 2010 Location: Poughquag NY Posts: 979 iTrader: 2 reviews	Its getting. A full pi swap and all bolt ons before it goes in. New gaskets and such. I think its easier to build this motor on a stand than in the car plus with a full tranny and motor it was only 400 __________________ bbk longtubes, bassani x, borla stingers, AM intake,bbk throttle body, Under drive pullies,Zex wet 125hp kit SCT Tuned by bama and drag radials, drag springs, agx shocks, lower control arms, subframe connectors MM+Cleavage Club #26

May 13th, 2011, 03:07 PM	#6
97S281 Rollin' 18/ pushin' 2 1997 Saleen S281 Join Date: Feb 2007 Location: The lost highway Posts: 6,673 iTrader: 13 reviews	$400? Damn, I'm NEVER gonna be able to sell my old motor. __________________ MODS IN GARAGE NCMM ORIGINAL BLOWN 96-98 CREW MEMBER # 1

May 13th, 2011, 03:10 PM	#7
sharkbait Hooo Ha Ha 1997 Mustang GT 11.65 @ 115 Join Date: Apr 2009 Location: Pasadena MD Posts: 9,743 iTrader: 10 reviews	We can put it in my go kart __________________ 410rwhp 520rwtq @ 12.9 psi

May 16th, 2011, 09:38 PM	#10
DsmDave Enthusiast 2001 Mustang GT Join Date: Nov 2010 Location: Poughquag NY Posts: 979 iTrader: 2 reviews	well here are some pics of my motor and new setup? __________________ bbk longtubes, bassani x, borla stingers, AM intake,bbk throttle body, Under drive pullies,Zex wet 125hp kit SCT Tuned by bama and drag radials, drag springs, agx shocks, lower control arms, subframe connectors MM+Cleavage Club #26

May 16th, 2011, 10:20 PM	#11
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,540 iTrader: 8 reviews	port the npi heads, cut the guides down, good cams, pi intake, and go. the npi heads are better flowing heads if you lift the valve .550 and helps with compression as well. any good name brand rod/pison would be good choice to get. __________________ project warhorse under construction wagon burner under construction as well (04 lightning) being built by MP2 Performance

May 16th, 2011, 10:31 PM	#12
DsmDave Enthusiast 2001 Mustang GT Join Date: Nov 2010 Location: Poughquag NY Posts: 979 iTrader: 2 reviews	im looking at just building this as my my motor to learn on before I do my 4v. I planned doing the PI intake manifold swap. what would lifting the valves bring my compression to about? how weak is this crank? Will I be able to get 450 wheel safely on a blower? __________________ bbk longtubes, bassani x, borla stingers, AM intake,bbk throttle body, Under drive pullies,Zex wet 125hp kit SCT Tuned by bama and drag radials, drag springs, agx shocks, lower control arms, subframe connectors MM+Cleavage Club #26

May 16th, 2011, 11:04 PM	#13
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,540 iTrader: 8 reviews	the valves dont effect compression. the npi heads just flow little better about .530 lift if they are ported right and cut guides. as for the cranks, cast cranks will do 600rwhp all day long no porblem as long as tune is right. __________________ project warhorse under construction wagon burner under construction as well (04 lightning) being built by MP2 Performance

May 16th, 2011, 11:09 PM	#14
DsmDave Enthusiast 2001 Mustang GT Join Date: Nov 2010 Location: Poughquag NY Posts: 979 iTrader: 2 reviews	Thanks for the advice. That sounds like it willpower be more than enough for a few low 11 sec passes __________________ bbk longtubes, bassani x, borla stingers, AM intake,bbk throttle body, Under drive pullies,Zex wet 125hp kit SCT Tuned by bama and drag radials, drag springs, agx shocks, lower control arms, subframe connectors MM+Cleavage Club #26

May 16th, 2011, 11:24 PM	#15
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,540 iTrader: 8 reviews	depends on compression and set up. the npi head is plauged with larger umbustion chambers, so a s et of flat tops would be a good idea to get compression up. also think about future, if you go to a pi head then compression ratio will change drastically. __________________ project warhorse under construction wagon burner under construction as well (04 lightning) being built by MP2 Performance

May 16th, 2011, 11:33 PM	#16
DsmDave Enthusiast 2001 Mustang GT Join Date: Nov 2010 Location: Poughquag NY Posts: 979 iTrader: 2 reviews	I have a pi motor in my car now. This is being built as a boost motor so the lower the better for me. __________________ bbk longtubes, bassani x, borla stingers, AM intake,bbk throttle body, Under drive pullies,Zex wet 125hp kit SCT Tuned by bama and drag radials, drag springs, agx shocks, lower control arms, subframe connectors MM+Cleavage Club #26

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