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Guest Message by DevFuse
 

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To return fuel or not to return fuel?


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5 replies to this topic

#1 BobBrumby

BobBrumby

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Posted 11 March 2005 - 01:49 AM

I am talking about my holley180 that came with no fuel return fitted. I took it to a holley shop and they said it should be ok without one. It has been good but this was with the stock filter with the fuel return up the top of the filter with the old line that used to goto the carb just kinked off. I am about to fit an inline filter and cap the fuel return line on the firewall. Will this damage my fuel pump or carb at idle? Or should i stick with the stock configuration?

#2 Skip

Skip

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Posted 11 March 2005 - 07:27 AM

Bob,
First, the fuel return was engineered for a purpose.

This being so the fuel pump is not "dead headed".

This condition exists when a pump tries to push
against a closed system.

This condition will exist in your fuel system when at idle.

I have read where some people get away with it,
but for how long has not been reported.

If the float needle seat or valve is not up to the task

carb dumping can result, it may not be enough
"passed gas" to cause problems
but why take chances.

The engineers at Subaru may not always score tries-

but most times they do put the ball up for points
on a free kick.

BTW
The filter you speak of with the return out of the top is a "vapor separator"

The true fuel return line is connected close to the carby fuel inlet.
The Weber DG series I have have a return built into the fuel input port.
You can use a "T" with a restrictor placed in the return leg.

#3 BobBrumby

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Posted 11 March 2005 - 06:46 PM

Skip do you know if the one piece fuel inlet and return fitting for the hitachi carbi uses the same thread as holley's or would i have to get it rethreaded?

#4 Skip

Skip

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Posted 11 March 2005 - 08:05 PM

Sorry Bob the only Carby I am friendly with

is the Weber

my quess - given Holley was designed for the

US market is -- no

A "T" fitting with a restricter of sorts would be
an EZ way to solve the riddle

Email me if you want and I'll show you a couple ways
I have done this.

neper at alltel dot com

#5 BobBrumby

BobBrumby

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Posted 11 March 2005 - 09:12 PM

i think i have sent you an email through the forum, if you dont get it my email my adress is dilatorix@hotmail.com. btw any sugestions would be greatly apreciated.

#6 Bro

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Posted 11 March 2005 - 10:27 PM

could you email me too please quombone@hotmail.com :)




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