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Old 10-12-2010, 09:47 AM   #1
Scooby Newbie
Member#: 241967
Join Date: Mar 2010
02 wrx

Default head port job when?

hi i want to know when you need to port the head,from which hp?
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Old 10-19-2010, 11:38 AM   #2
FuJi K
Scooby Guru
Member#: 3687
Join Date: Jan 2001
Chapter/Region: MWSOC
Location: St. Paul, MN
MY99 GF4 JDM 6spd
NF Performance


400whp+ usually. What kind of Powerband are you looking at?
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Old 10-19-2010, 07:41 PM   #3
Scooby Specialist
Member#: 180640
Join Date: May 2008
Chapter/Region: E. Canada
Location: Montreal, Canada
2000 Drag RSTi
8.96 @ 163


It really depends on what your goals are for the car.
There are a lot of drag subarus that are running unported heads and making monster power. See the problem with porting is that if you take too much material out you can easily crack a head.

I am currently porting my STI heads and took my old ones and cut them up into vertical slices. This way, you can see how far you can port safely without overdoing it.

If you decide to go with nice cams, a port n polish would be a nice but not necessary. If you are reving high, id port the hell out of em!
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