Anyone install a normal Walbro into there tank?

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Feb 14, 2008 | 03:55 AM

chpmnsws6

Thread Starter

Drifting

Joined: Jul 2006

Posts: 1,700

Likes: 60

From: Springfield IL

Anyone install a normal Walbro into there tank?

I was wondering if I HAD to install a kit from lingenfelter, or if I could install a normal Walbro pump. Fuel pressure is dipping down to 20psi at WOT even with a new fuel filter.

Feb 14, 2008 | 07:00 AM

WKMCD

Race Director

Joined: Dec 2004

Posts: 13,760

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From: Haymarket VA

I run the Racetronics kit. It come with the wiring harness all the way to the alternator and a few other things. It uses a Walbro 255 fuel pump. It keeps up with 510RWHP N/A just fine.

Feb 14, 2008 | 11:52 AM

CODE4LS1

Racer

Joined: Jul 2006

Posts: 401

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From: Big Bear, CA

My regular Walbro is holding up just fine w/no problems so far. Hope this helps.

Feb 14, 2008 | 01:10 PM

chriswtx

Le Mans Master

Joined: Feb 2002

Posts: 5,970

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From: San Marcos Texas

You cant just buy a $100 Walbro pump and slap it in there.. The Lingenfelter and Ractronix walbro pumps come as a new bucket assembly to specifically fit in the C5 gas tank...

Feb 14, 2008 | 02:53 PM

chpmnsws6

Thread Starter

Drifting

Joined: Jul 2006

Posts: 1,700

Likes: 60

From: Springfield IL

I'm just debating installing an inline 255 pump

Feb 14, 2008 | 03:12 PM

chriswtx

Le Mans Master

Joined: Feb 2002

Posts: 5,970

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From: San Marcos Texas

On a C5 you can't run an external pump "inline", it has to run in paraell with the in tank pump to keep the in tank balance system working properly. If you put a pump in line it will suck the driver side tank empty leaving the passenger tank full of gas. The in tank jet pump system need fuel pressure to feed the venturi pump in the passenger tank to siphon gas from the passenger tank to the drivers tank...

Feb 14, 2008 | 04:01 PM

chpmnsws6

Thread Starter

Drifting

Joined: Jul 2006

Posts: 1,700

Likes: 60

From: Springfield IL

so even with the stock pump in place it would not work?

Feb 14, 2008 | 04:11 PM

chriswtx

Le Mans Master

Joined: Feb 2002

Posts: 5,970

Likes: 20

From: San Marcos Texas

no, inline the external would suck on the internal fuel pump line keeping the internal pump from making enough line pressure to feed the venturi system. Its been tried and it didn't work. You have to "T" in an externall pump so the both pumps are feeding the fuel line to the rail and the intake pump sees fuel pressure.