fuel rail help

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Jan 8, 2009 | 11:22 AM

Big Bird WS6

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fuel rail help

i have an 2002 f-body. and i am puting in a new motor with a ported ls2 intake.

will a ls2 fuel rail work in my ls1 f-body?

i know i need spacer for the fur injector hight. but would about fuel hook ups. and the regulator part.

thanks

Jan 8, 2009 | 12:36 PM

Nasty N8

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What reg. your reg. is in you tank. Ls2 rails should plug right into your factory hose.

nate

Jan 8, 2009 | 12:50 PM

Big Bird WS6

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thank you.

and the reg i was talking about is on my 02 fuel rail line there is a round thing about 1" deep and 1 1/4" round. right where the fuel comes in to the rail sytem before it splits in to two lines.

Jan 8, 2009 | 03:52 PM

03 BUSA

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^^^I believe they call that the fuel dampner and with aftermarket rails you do not need it. Trust me I have searched this many times on here.

Jan 8, 2009 | 05:03 PM

Nasty N8

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There is only one line going to your rails. The other line is a purge line coming from your charcoal can to the vacuum on the intake.

Nate

Jan 8, 2009 | 08:19 PM

405HP_Z06

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Quote:

Originally Posted by 03 BUSA

^^^I believe they call that the fuel dampner and with aftermarket rails you do not need it. Trust me I have searched this many times on here.

Not completely correct. The fuel dampener helps to absorb pulses in the fuel rails caused by rapid changes in throttle position during high load periods. The injector open/close events cause pulsations that get worse during high RPM periods with longer pulse widths. Large injectors and large fuel rails will make fuel pulsation worse.

The LS2 doesn't use an external dampener because GM used a different method to achieve dampening.

Last edited by 405HP_Z06; Jan 9, 2009 at 11:28 PM.

Jan 9, 2009 | 09:18 AM

Big Bird WS6

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^ ^ ^ explain

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Jan 9, 2009 | 10:34 AM

405HP_Z06

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Quote:

Originally Posted by Big Bird WS6

^ ^ ^ explain

Do I need a fuel damper in my fuel system?

This is a question that we often hear from our customers. The easiest way to find out is to monitor your vehicle’s fuel pressure at peak power, wide open throttle. A session on the chassis dyno is recommended for this test. Do NOT use a liquid-filled or dampened fuel pressure gauge for this test! At peak power, the fuel pressure gauge should not flutter more than 4-5 PSI. Also, a damper is recommended if one of more of the following conditions exist:

* Batch-fire injection is used
* Engine RPM will exceed 8000 RPM
* 5 or more injectors are used per fuel rail
* To replace a factory-installed fuel damper

For high-power applications, it is recommended that a damper be installed on EACH fuel rail for maximum effectiveness.

http://www.injector.com/fueldampers.php