I got my H22a4 delivered to me today and was thinking about having the head ported,polished and a 3 angle valve job. I have a friend that does it and is REALLY good at it. Anyone have this done and how did it help? Thanks.
I think the H22A4 has bet. 195-200hp. Having the head ported,polished and a 3 angle valve job is a great idea since the motor is already out of the car. If you're going to do any motor mods, do them now. The only issue (really a non-issue) is that you won't be able to baseline dyno the stock H22A4 setup.
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