500hp sr20 fuel system help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

frankenfresh · 01-08-2010, 06:15 PM

i had my car's fuel system (s13 silvia) set up for 300hp but have since upgraded a lot of things and will be running between 450 and 500 whp on a red top sr20det with nismo 740 side feed injectors, sard fpr, and aftermarket side feed fuel rail.

first question is, whats the hp rating for a walbro 255?
im assuming that I will need to replace it with something that pumps a little more but am not sure. opinions on what i should be using?

ive read that i'll need to run -6an or -8an fuel lines from my tank to the engine bay. can someone explain these lines to me? are these professionally built lines that are crimped together similar to brake lines? or is it something that you just build yourself with a fuel line and ends that you clamp on yourself?

with the hp that im looking to run now, should i be looking into running some kind of fuel surge tank? or is that overkill?

01-08-2010, 06:15 PM	#1
frankenfresh Leaky Injector Join Date: Mar 2009 Location: canada Posts: 63 Trader Rating: (1) Feedback Score: 1 reviews	500hp sr20 fuel system help i had my car's fuel system (s13 silvia) set up for 300hp but have since upgraded a lot of things and will be running between 450 and 500 whp on a red top sr20det with nismo 740 side feed injectors, sard fpr, and aftermarket side feed fuel rail. first question is, whats the hp rating for a walbro 255? im assuming that I will need to replace it with something that pumps a little more but am not sure. opinions on what i should be using? ive read that i'll need to run -6an or -8an fuel lines from my tank to the engine bay. can someone explain these lines to me? are these professionally built lines that are crimped together similar to brake lines? or is it something that you just build yourself with a fuel line and ends that you clamp on yourself? with the hp that im looking to run now, should i be looking into running some kind of fuel surge tank? or is that overkill?