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homemade AFPR

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Old Nov 14, 2000 | 11:17 AM
  #1  
fly89gta's Avatar
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From: Mays Landing NJ
Car: 2018 Camaro SS
Engine: LT1 w/Paxton 1500SL
homemade AFPR

i've heard people putting quarters in their FPR off of a TPI to make it adjustable...can anyone give me info? thanks!

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89 GTA
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Old Nov 14, 2000 | 01:06 PM
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
It doesn't make it adjustable. It simply makes the fuel pressure rise by a specific amount. You need a way to move that quarter up and down for it to be adjustable, but the top cap doesn't have the strength to support a threaded screw.

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Old Nov 14, 2000 | 01:26 PM
  #3  
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From: Mays Landing NJ
Car: 2018 Camaro SS
Engine: LT1 w/Paxton 1500SL
thanks jim.....now i have another question for u....can i relocate the pressure regulator...cause i don't feel like pulling the plenum everytime i wanna mess with it...are there any tech files i can read of this procedure? i dont feel like spending $60 on a new one when can rip mine for $.25 or $.50...all depends on the amount of quarters i need any more info would be great!! thanks

[This message has been edited by fly89gta (edited November 14, 2000).]
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Old Nov 14, 2000 | 05:48 PM
  #4  
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From: San Diego, CA
You can make your own by jb-welding (or actually welding) a nut to the top of your stock fpr and then putting a shim and a bolt through the nut you welded. someone wrote a article about making one i think. It takes maybe 30 minutes to do it right. I did it, and now I have an extra holley afpr sitting around.

It would cost a lot of money to re-locate your fpr and probably wouldn't be possible to do without custom machining.

Just make your own and buy a fuel pressure guage... then your set.
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Old Nov 14, 2000 | 08:51 PM
  #5  
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Fly,

Jim is somewhat correct. The old "quarter-in-the-cap" trick doesn't make it adjustable, but this modification does:

AFPR.pdf

You'll need Adobe Acrobat Reader to view/print the file (see link below).

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Vader
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Adobe Acrobat Reader 4.0
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