300ZXT how much horsepower more per PSI - Page 4

**morepower2** · Aug 27th, 2004, 11:27 AM

Quote:

Originally Posted by B@lliZtiK

Probably just stick with the Walbro idea then. It should support the Hp I have in mind anyway. Do the fuel line sizes need to be raised to get around 450-500 Hp? I know this is an issue with certain other makes of cars.

No you can use the stock fuel line.

Marc Z31 · Aug 27th, 2004, 10:17 PM

If you wanted more than 500 fhp, you will need larger lines... and a better bottom end.

hondakillerZX · Aug 27th, 2004, 10:49 PM

do any of you know where i could get a better exhaust manifold

Zen31ZR · Aug 28th, 2004, 05:55 AM

Quote:

Originally Posted by Marc Z31

If you wanted more than 500 fhp, you will need larger lines... and a better bottom end.

I know about cryoing and shot peening the crank , what else is there to do.

TheJackal · Aug 28th, 2004, 02:17 PM

Quote:

Originally Posted by B@lliZtiK

I know about cryoing and shot peening the crank , what else is there to do.

i think he means forged pistons and rods

Zen31ZR · Aug 28th, 2004, 03:56 PM

Quote:

Originally Posted by TheJackal

i think he means forged pistons and rods

That too , yep.

JAMESZ · Aug 28th, 2004, 09:41 PM

And a forged crank. Somewhere around 450-500RWHP the crank isn't going to be happy. Get forged, crank, rods, and pistons at about 450RWHP (pistons maybe around 400RWHP). The bottom end is strong but because of all the cast parts under high power the internals will have issues.

Zen31ZR · Aug 28th, 2004, 09:54 PM

Quote:

Originally Posted by JAMESZ

And a forged crank. Somewhere around 450-500RWHP the crank isn't going to be happy. Get forged, crank, rods, and pistons at about 450RWHP (pistons maybe around 400RWHP). The bottom end is strong but because of all the cast parts under high power the internals will have issues.

MarcZ31 supposedly had his stock crank shot peened and cryoed , I just want to confirm that..........

**morepower2** · Aug 30th, 2004, 01:11 AM

Quote:

Originally Posted by Marc Z31

If you wanted more than 500 fhp, you will need larger lines... and a better bottom end.

No you don't. You can use the stock lines to over 500 whp. Stock prepped rods can work for over 500 hp for some time at least.

Prepped is beam polished and shotpeened. The stock crank is fine, just deburring and shotpeening is needed.

**morepower2** · Aug 30th, 2004, 01:12 AM

Quote:

Originally Posted by hondakillerZX

do any of you know where i could get a better exhaust manifold

Try to find an HKS with an external wastegate flange and a TO4 bolt pattern. You can only find them used.