My friend has a h22a with stock compression and cams on his 92 hatch si. In a couple of months he is planning on going 12:1 compression and a fully built head.

He wants to know what

Fuel pump
Fuel Regulator
and
Injectors does he need? (what size)

Any help is appreciated!

 

He shouldnt need to change any of that, higer comp doesnt need more fuel, at least not more than your stock setup can provide.

 

I do and dont neccarily agree with the post above, higher compression does increase the chance for detonation if he doesnt supply atleast a little more FUEL PRESSURE then it can hurt his engine.

Id just get an adjustable FPR and gauge and hook that up, see where your at then get some dyno tuning in your really not going to know where your at with air/fuel until you do taht.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kasper-EF8 &raquo;</TD></TR><TR><TD CLASS="quote">I do and dont neccarily agree with the post above, higher compression does increase the chance for detonation if he doesnt supply atleast a little more FUEL PRESSURE then it can hurt his engine.</TD></TR></TABLE>

Yes higher CR increases the possiblilty of detonation but higher oct gas and tuning would be how I'd regulate detonation, not more fuel. Yes it can help but it certainly wouldnt be my choice, to each their own.

 

I was gonna say up the octane as well.......