Holley AFPR, how to install?
Thread Starter
Drifting
Joined: Aug 2001
Posts: 1,550
Likes: 27
From: Minneapolis MN
Holley AFPR, how to install?
Now that the plenum is off I might pick up a Holley AFPR since that's what most recommend. What size torx do you need to remove the stock FPR? Is it as simple as unbolting the stock one and pulling the fuel lines? I haven't depressurized the system so will I get fuel spraying everywhere? It doesn't look too hard but I want to get an idea of what to do!
Team Owner
Joined: Jan 2003
Posts: 20,322
Likes: 248
From: Summerland B.C. Canada
Re: Holley AFPR, how to install? (FlyboyZR1)
T10 security torx bit. The one with a hole in the center of bit.
Remove vacuum line.
Remove torx screws. The cap is under spring pressure so be careful you don't let the pressure tear some threads when you get down to the last couple of screws.
Remove cap,spring and diaphram
Install Holley diaphram, noting which is the correct side up.
Install spring
Install spring washer
Install cap and reinstall torx screws
Install vacuum line and your done.
Of course you will have to put a gauge on rail and set your pressure.
:cheers:
Remove vacuum line.
Remove torx screws. The cap is under spring pressure so be careful you don't let the pressure tear some threads when you get down to the last couple of screws.
Remove cap,spring and diaphram
Install Holley diaphram, noting which is the correct side up.
Install spring
Install spring washer
Install cap and reinstall torx screws
Install vacuum line and your done.
Of course you will have to put a gauge on rail and set your pressure.
:cheers:
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
Re: Holley AFPR, how to install? (FlyboyZR1)
The only catch (at least on my application) was that the adjusting wheel didn't quite clear the bottom of the plenum. I had to grind some material off the plenum in that area for it to clear. It wasn't anything that a few minutes with a dremel couldn't solve :cheers:
Drifting
Joined: Jul 2002
Posts: 1,488
Likes: 4
From: Frostburg MD
Re: Holley AFPR, how to install? (FlyboyZR1)
You don't have to unhook the fuel lines, you should let the pressure out of the system. Loosen the gas cap and let the car sit for several hours would help, there is a fitting on the rear passenger side fuel rail where you read the pressure that you can also use it to relieve pressure, it should be under a little metal cap.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Holley AFPR, how to install? (FlyboyZR1)
It would be best if you had measured fuel pressure before removing the plenum but try 44psi to start with.
Be sure to relieve fuel pressure at the Schraeder before opening the FPR.
During installation press the cap into place and hold it there as you tighten the TOrx screws. Tighten them in succession with firm pressure but be careful to not strip the threads as they are rather fragile.
Be sure to relieve fuel pressure at the Schraeder before opening the FPR.
During installation press the cap into place and hold it there as you tighten the TOrx screws. Tighten them in succession with firm pressure but be careful to not strip the threads as they are rather fragile.
Melting Slicks
Joined: Oct 2000
Posts: 3,426
Likes: 4
From: Heidelberg PA
Cruise-In V Veteran
Re: Holley AFPR, how to install? (TIMSPEED)
Just another quick note - When I installed my Holley the car initially would not start. - Adjusted the fuel pressure up on regulator and she purred like a kitten. The Holley can be adjusted to almost no pressure and if it is installed that way the car will not start.
Just be aware of this since you cannot get a good pressure reading until the car starts.
[Modified by 85vet, 9:04 AM 3/5/2004]
Just be aware of this since you cannot get a good pressure reading until the car starts.
[Modified by 85vet, 9:04 AM 3/5/2004]
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Thread Starter
Drifting
Joined: Aug 2001
Posts: 1,550
Likes: 27
From: Minneapolis MN
Re: Holley AFPR, how to install? (65Z01)
It would be best if you had measured fuel pressure before removing the plenum but try 44psi to start with.
