Fuel line question

[mgro]

I'm currently busy with an inline fuel pump install. I completely rebuilt the tank bracket and fuel pickup and I'm thinking of upgrading the fuel lines from the tank to the engine while I'm at it.

I noticed that the fuel return is much thinner then the main fuel line. Why did the Honda engineers make this design choice? Is that for cost price alone, or does the increased flow resistance in the fuel return help to dampen oscillations in the fuel system? Or something altogether different?

The more I look into the Honda design the more cleverness I find... it seems that almost everything is there for more reasons than I can think of in the first place. I don't want to replace the fuel line to find out I get a nasty problem in return.

Any ideas?

Mark.

[Jay Lee]

it may not need to be bigger because some of the fuel flow is being diverted into the engine.

[CivicR]

I have seen alot of turbo guys going way over 300+hp on the stock fuel delivery system...I would spend the money on something else that will give you some more return on HP.

<font color="#a62a2a" size="1">[ September 11, 2003 05:01 PM: Message edited by: CivicR ]</font>

[JRCivic]

I agree with CivicR...
And use a Walbro 255 lph pump to boot. It will deliver the fuel necessary for more than 400 wheel HP and it is a BOLT-IN product... no modification is necessary.

[mgro]

Originally posted by JRCivic:
I agree with CivicR...
And use a Walbro 255 lph pump to boot. It will deliver the fuel necessary for more than 400 wheel HP and it is a BOLT-IN product... no modification is necessary.

<font size="2" face="Verdana, Helvetica, sans-serif">Well, upgrading the fuel lines doesn't cost much money (like $20 or so), just lots of time... but I think you're right, I got carried away a little [img]redface.gif[/img] I'll leave them stock.
Its too late for the Walbro. I already spent the money for the Endyn Bosch pump, and the tank bracket is totally chopped up. I have to follow through on that.

Thanks for setting me straight,

Mark.