from what i have been told from josh at galvsport for my 32 build no need to replace the fuel lines for this reason, however it wouldnt be a bad idea to run a new dash 8 feed just to keep everything fresh. considering the cost for this new line is sweet f all in the grand scheme if you are chasing big power, why not?

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R32 GTR - 800ish

60.7 Long Track at Barbs
57.6 at RAC Reverse circuit.

Yeah man but thats two different things

"you must" or "why not"

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I am only an asshole on the internet :)

[SIGPIC][/SIGPIC]

I don't want to run a new line if i don't need too, because I can buy 2 cartons of beer for the cost. I do want to run them, because if i run out of fuel on the dyno, thats dyno $$$ & time wasted.

I think by the sounds of it 600 to 650 crank hp is the upper limit of 5/16 or standard in car hard line. I am going to run a dash 8 feed & just be done with it.

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Cheers,

Simon.

I expect 600+ hp then

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Long live the WRC

Ha ha, I very much doubt it, but you never know. I will try for 601

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Cheers,

Simon.

justin still runs standard lines and is making 600plus on juice atw, with no problems

For what it's worth, V8 supercars are using Dash 8 flexible lines at approx 635hp on E85 fuel.
Ref clause C9.3

http://www.v8supercars.com.au/files/...013-Div-C1.pdf

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MY00 WRX. 89 Prelude. 99 CRV