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Advantages and Disadvantages. 52psi

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Old Aug 7, 2007 | 09:09 AM
  #1  
Viprklr's Avatar
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From: N. Illinois
Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Advantages and Disadvantages. 52psi

What are the advantages and disadvantages of running 52 psi fuel? I know that's high but the only way I can get it lower is if I remove the plenum and grind even more out of underside.
Could I lie to the computer and tell it I have 37 or 38 pound injectors instead of the 36 it thinks I have now?

This is in regards to the 92.
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Old Aug 7, 2007 | 11:06 AM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Shortened injector and pump life.
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Old Aug 7, 2007 | 11:16 AM
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Viprklr's Avatar
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From: N. Illinois
Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: Advantages and Disadvantages. 52psi

Can you explain the shortened pump life part? Why would it shorten the pump life? The pump pumps around 80psi regardless of what pressure you're allowing through the rail.
Not trying to be argumentative, I actually want to understand this.
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Old Aug 7, 2007 | 11:26 AM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The pump puts out the pressure you regulate it to. The higher the pressure, the harder you're working it. Pressure is regulated by controlling the return - the higher the pressure, the less the return.

If you dead-head the pump, outlet pressure will probably be in the neighborhood of 80 psi, and its life will be very short. The higher you are from stock, the closer you are to dead-heading it, so the shorter the life.
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Old Aug 7, 2007 | 12:02 PM
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From: N. Illinois
Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: Advantages and Disadvantages. 52psi

Okay. Thanks.
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