Just primed up the fuel logs on my HSR and adjusted the pressure to 44 psi.
Holds real nice and repeats good each time I run the pump but it drops off like a rock when the pump stops. Injectors are fresh back from Rich and haven't even fired'em up yet so they aren't leaking.
Is this common for these "known" to be crap adjustable regs on these?
I'm going to try and run with it for a while this way because it does "seem" to regulate well when the pump is on. Should have bought a Kirban when cash was good.
Any problems forseen by living with it that way?

 

Yes its known issue.

Some people have gotten their money back and/or a new replacement from Holley.

Might want to try calling them first or whomever it was bought from.

later
Jeremy

 

Got it second hand so I'll have to live with it till I can replace it with a good one. Just wondered if that was a sign of impending failure of the diaphram or if leakage externally at the adjustment is in my near future.

 

Holley AFPR's from what Holley has told several of us aresupposed to drop the pressure off quickly like that, it's supposedly a designed in safety feature so the fuel rail is not pressurized when not being used.

 

Mine acts the same way. Hasn't been on the car too long, but I haven't had any problems. I've also heard the same as Vern.

 

well that puts me at ease I thought my regulator was messed up only gripe I have now is that it wont adjust to over 50 psi (dont ask trying to band aid tune)

 

wow, im having the same problem. motor hasnt fired yet but this had me worried, especially because i think my check valve in the fuel pump is broke. i feel a little more at ease now.

 

Pinch the return line shut and see if it holds pressure.
That will tell you about the pump/injectors.

 

I've read that and wish I could, that would make my life so much easier but I have steel braided lines

 

You can get a steel #6 AN cap or plug for $3 or so from a hydraulic shop.
They might even let you borrow it and do it in the parking lot.
Just seal off the return fitting and do your test.

 

thanks, i'll defenitly try that. something is defenitly screwy though (i think the reg and pump if not all three). when i went to set the fuel pressure for startup tonight; depending on how much i turned the adjust screw (on the reg) it would increase or decrease the fuel pressure...
for instance, if i tightened the regulator to increase the pressure it would increase like it should to a point. if i crossed that point then it would actually decrease the pressure when tightened more. if i went further it would again increase the pressure like it should.

I've had so many little problems and gremlins im almost done with cars altogether

 

Wow, hearing all this is making me wonder why i just bought my HSR. While we are on the subject iam having problems with my injector selection, the fuel rails are nowhere near adjustable and iam at the point where i need to get them ordered but all the injectors ive looked at are different dimensions and iam hoping someone can tell me which ones there using. The spec's on the Accel are 2.880 overall Height X 2.270 seat to seat height, Ford Racing SVO's are 3.045 overall X 2.563 seat to seat, and my stock ones are 3.310 overall X 2.414 {i think b/c iam not 100% sure where they measure from} seat to seat. I called Holley to get the dimensions off the Holley injectors they supply with there kit {which might i add are $544.00 a set }, and they dont have them and are to lasy to pull one and measure for me, all they said was there a replacement for the stock ones as well as the Accel & Ford racing. I sat my stockers in to see how close they were and their to long {sits the rail up about 0.050 to high to insert the bolts} question is will the Accel be {to} short not allowing the top o-ring to remain in the seat. Iam looking at 30lb/hr injectors, anyone running this setup, and its for a 1987 Iroc 350. Thanks Chad

 

Mine is an 87' 350 and I'm running 30# injectors.
They are trapped by the rail and manifold and don't leak.
A little up/down movement is there but the pressure just seats them into the rail. not enough movement to uncover the oring or anything like that.
I don't forsee any issues with them.

 

Hi all, hey I'm having prob's with my HSR Reg also.

It's only going to 30 PSI not the 43 PSI, and it's also dropping pressure as soon as the pumps stop and then makes starting really hard.

The Australian importer here claims that Holley no longer make the replacement part, so does anyone know what other part I can get to fit straight in that will hold pressure and run at 43 PSI? I really don't want to go chopping and bending making a mess and have bit's hanging off things they should not be.

I want to keep it simple and neat.

Any help welcome.

 

You can go non-adjustable (Grand Nationals) or get an adjustable unit from Kirban (expensive).

 

I think the GN regs are set lower than the TPI 43 but don't have info to confirm that right now.The Kirban adjustable one is nice (and rebuildable if needed)I havn't had a bit of problems since installing it. Only took 10 mins and bolts directly in place of the existing reg. I would recommend it if you have the cash.

 

IIRC you're right. Seems like I remembered hearing between 36 and 38 PSI or something like that. But many people have done it since Holley's are so 'nice'.

Since I'm completly rebuilding the motor, I think I'll be forking over the extra money for a Kirban to eliminate one problem. As far as I'm in now I guess $120 isn't all that much

 

Same injectors here , loose enough to rotate freely but no leaks

 

Today we were testing my friends 406 with the HSR since it is running lean. when the fuel pump primes, the fuel pressure gauge goes up to about 1-2 psi (yes, one to two psi) and then drops to 0 instantly.
While idling it was set at 35psi and we bumped it up to 48. The fuel pressure doesn't go up or down when revving the engine either. Fuel pressure drops to 0 when the engine is turned off.

We though maybe my gauge was flaky so we hooked it up to my car.
Pressure goes up to 43psi and stays there after it primes.
Idling it is at 38psi and when you rev it it goes to 43-45psi. shut the car off and it holds at 38 or so psi.

On his car, I also clamped the return line and the pressure didn't go up, still did 1-2psi then to 0.
Does that sound like his regulator is bad? or could it be the pump or the small rubber line from the pump to the sender? or a combination of problems?

 

Might check that the pump is getting proper voltage/good ground. 1-2 psi is not good but not sure how else to explain that if it goes to 35 and higher when running.

 

Just a guess to fit the description-
If the check valve in your pump is weak, then it can't pressurize the whole system in one to two seconds on prime due to drain back after shutdown.
But after the pump runs a while pressure is ok.
Try jumping at the aldl connector to run your pump continuously while monitoring pressure.

That's not to say your reg isn't going bad....