View Poll Results: Did your Holley AFPR Fail
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HSR Adjustable Fuel Pressure Regulator Failures.
#1
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HSR Adjustable Fuel Pressure Regulator Failures.
I want to get an idea of the failure rate of the AFPR's that come with the HSR. Post up what pressure you had it set at, and how long it lasted (approx running time) before it failed.
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Stock pressure, 43lbs.
Went through 2. Both broke at the track which is 150km away nearly leaving me stranded. They both started pissing fuel into the vacuum line. They lasted a month at most. Holley replaced the first one and I didn't bother the next time around. I ditched the holley garbage and bought a non-adjustible buick gn replacement and it has been fine ever since.
Went through 2. Both broke at the track which is 150km away nearly leaving me stranded. They both started pissing fuel into the vacuum line. They lasted a month at most. Holley replaced the first one and I didn't bother the next time around. I ditched the holley garbage and bought a non-adjustible buick gn replacement and it has been fine ever since.
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Mine didnt go out but I suspect it is dropping pressure so I purchased a billet Kirban unit to replace it with Ill see if the car gets any faster when the track opens
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Had mine at 50 psi and it didn't last long.
Got the setup second hand so don't know any history on it.
Got the setup second hand so don't know any history on it.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Mine was on a SuperRam, but it still never failed. Running a TPIS version now....
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Hi,
The damn thing did broke during cranking.
100% new from Summit, installed one year ago but today did the first engine fire and did put the FPR at 45 PSI at that moment I got fuel at the screwdriver.
Lots of fuel man!
It is ridiculous that this poor quality has been send to the clients.
Just have order a Kirban 6547 and I hope that I get it fast to be able to have some fun.
It is just dangerous so please take attention to this FPR, I have cap it the facuum (screw) port.
Regards,
Cobra289
The damn thing did broke during cranking.
100% new from Summit, installed one year ago but today did the first engine fire and did put the FPR at 45 PSI at that moment I got fuel at the screwdriver.
Lots of fuel man!
It is ridiculous that this poor quality has been send to the clients.
Just have order a Kirban 6547 and I hope that I get it fast to be able to have some fun.
It is just dangerous so please take attention to this FPR, I have cap it the facuum (screw) port.
Regards,
Cobra289
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#8
Re: HSR Adjustable Fuel Pressure Regulator Failures.
glad to see (not really) that i am not the only one having touble with the reg.my first one new leaked fuel from start up my new one has just started to loose pressure after 4 weeks. will be going for a stand alone reg made by someone other than holley next.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
This isn't 100% the same as the header, but when I got my fuel rails from a third party the guy said he took off the Holley regulator and put on a GN regulator from Napa, said the Holley units are known for having metal shavings in them.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
My Holley AFPR was erratic, when I adjusted it the PSI gage would go down then up,, or then down, I did not trust it.
Called Holley, but what a total waste of time, no more Holley Products for me, they could not care less about customer service. If you make a bad product, its a bad product forever, regardless of whether you have a receipt or not.....
Bought a Kirban,,,, only!
Called Holley, but what a total waste of time, no more Holley Products for me, they could not care less about customer service. If you make a bad product, its a bad product forever, regardless of whether you have a receipt or not.....
Bought a Kirban,,,, only!
#11
Re: HSR Adjustable Fuel Pressure Regulator Failures.
mine is only a few months old and is holding fine so far...but the car is now acting funny at times, like hitting a brick wall in third gear at about 4000-4500rpms anywhere in there.. sometimes it does it sometimes it doesnt... i hope its not a bad regulator
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Went through 2. Neither would hold pressure steadily, and both maxed out at 43 psi. Love the HSR, and the rails are nice, but very unhappy with the quality of the regulator.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Hi,
Yesterday I did received the FPR from Kirban.
Now I understand why most people advice to use this one.
It looks pretty damn good. Well machined and all CNC.
I will install the FPR this weekend and see if I can get the pressure spot ON.
Check the pictures.
Regards,
Cobra289
Yesterday I did received the FPR from Kirban.
Now I understand why most people advice to use this one.
It looks pretty damn good. Well machined and all CNC.
I will install the FPR this weekend and see if I can get the pressure spot ON.
Check the pictures.
Regards,
Cobra289
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
I have the Holley regulator and haven't had a problem yet. Of course I only have about 100 miles on it! I'm curious about this Kirban regulator. Is it a direct replacement for the Holley? What is the part number again?
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
# Kirban 6547
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
You DO NOT need to fabricate anything, just dismantle the hoses and reconnect after fixing the two support bolts.
The HSR has a combined vacuum port and adjust screw. The Kirban as you can see at the picture the vacuum port is separated, so that you don't need to remove to adjust the pressure.
The site of Kirban Performance is here:
https://secure.mysuperpageshosting.c...turboregal.htm
Cost $105
Guy's a simple search will show you the possibilities.
Regards,
Cobra289
#22
Re: HSR Adjustable Fuel Pressure Regulator Failures.
I bought and installed the kirban unit and what a difference.the car now has precise fuel pressure and now drive consitantly when i give it stick ,no more breaking down under full throttle.glad i found this site you camaro guys have researched the HSR more than the vette guys. thanks
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#24
Re: HSR Adjustable Fuel Pressure Regulator Failures.
i purchased the hsr and the adjustable fuel rail kit.... the motors not going together yet prob spring time.... im kinda even afraid to use the holley adjustable regulator.... it looks like crap! like cheap. should i try it or just get the kirban unit?
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Get the Kirban one.My friend Kat suggested that I get one when I purchased my HSR used.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
About 250 miles and I noticed the vacuum line was wet with gas shen I pulled it to adjust the pressure. It isn't dripping or streaming but it's wet. I'm keeping a close watch but will probably go with another brand if uh I mean when it goes.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
I have mine at 50 psi without vacuum. But today I noticed the FP was 50psi no matter what vacuum I had...........so I guess its bad
Will buy a Kirban....
/N.
Will buy a Kirban....
/N.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Hate to bring up a dead thread, but my first one was bad out of the box. Second one failed after 30 minutes, set for 55 psi. I just ordered an Aeromotive, which should be here today. Then it's new lines and I should be back in business. I have to drive this car this year.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
well, my SECOND one bit the dust today.
The first one caused a hydrolock on cylinder 5 and bent a rod. I guess I found out the hard way, but figured that maybe I had a defective unit.
Put the second one in late last year and it just leaked on me today. I think the total mileage must've been about 300 miles. Car stalled on me, and I noticed a bit of fuel leaking out from the vacuum line. I pull off the line, and sure enough, fuel starts dripping out.
Unfortunately, I drove the car for maybe about 2 miles before having found a safe spot to pull over and get a tow.
I'm utterly disappointed in Holley for such poor quality.
The first one caused a hydrolock on cylinder 5 and bent a rod. I guess I found out the hard way, but figured that maybe I had a defective unit.
Put the second one in late last year and it just leaked on me today. I think the total mileage must've been about 300 miles. Car stalled on me, and I noticed a bit of fuel leaking out from the vacuum line. I pull off the line, and sure enough, fuel starts dripping out.
Unfortunately, I drove the car for maybe about 2 miles before having found a safe spot to pull over and get a tow.
I'm utterly disappointed in Holley for such poor quality.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
My first one was bad right out of the box... wouldn't go higher than 30psi.
My second one is better but still not right... fuel pressure will not hold stable.
My second one is better but still not right... fuel pressure will not hold stable.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
48psi and mine last almost 50k before it shat itself. Sucked because I was on my way to a car gathering loaded down with tent/gear/cooler too. Easy to diag once I popped the hood.
It was a friday night and autozone was the only one local that had a GN reg for $29.99! Bought that because it was my DD, ordered the kirban and warrantied out the vatozone one later.
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#35
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Sweet I thought I was going to have to go thru the headache of ordering different fittings, an/ braided hoses adapters etc.. to plumb in an aeromotive fpr now im just going to bolt in that kirban FPR. Thanks big time!!!
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Thankfully I checked here before I pulled the tank to swap out the pump which was fine.
IROC was hesitating at the high RPM range like it had a rev limiter, fuel pressure was under 20 at key on ~26# running and would DROP when revved.
When first installed, set the psi at ~45# I think and never noticed a problem until it started running funny this week. Probably had 5000 miles maybe. Unit was the Holley Adjustable one.
When the vac line was pulled off I found some fuel in it (small amount) and it looks to have been leaking for a little bit.
I went to VatoZone and bought GP Sorenson part #800-113 (ONLY $20!) which is stock FPR for a 1987 Buick Regal GN and it held 30#-38# when revved, problem solved! Glad I did not have some horror stories caused in here. Wonder if I can send it back to Holley still heh?
HTH,
V
IROC was hesitating at the high RPM range like it had a rev limiter, fuel pressure was under 20 at key on ~26# running and would DROP when revved.
When first installed, set the psi at ~45# I think and never noticed a problem until it started running funny this week. Probably had 5000 miles maybe. Unit was the Holley Adjustable one.
When the vac line was pulled off I found some fuel in it (small amount) and it looks to have been leaking for a little bit.
I went to VatoZone and bought GP Sorenson part #800-113 (ONLY $20!) which is stock FPR for a 1987 Buick Regal GN and it held 30#-38# when revved, problem solved! Glad I did not have some horror stories caused in here. Wonder if I can send it back to Holley still heh?
HTH,
V
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
The only problem with the kirban fpr is adjusting it. I need to take the distributor cap off to get to the adjustment screw. Its a pain in the *** to adjust, its impossible to get to its not even possible to do when the car running! I set mine at 49psi with the vacuum line off of the regulator.
#38
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
The only problem with the kirban fpr is adjusting it. I need to take the distributor cap off to get to the adjustment screw. Its a pain in the *** to adjust, its impossible to get to its not even possible to do when the car running! I set mine at 49psi with the vacuum line off of the regulator.
#39
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
The only problem with the kirban fpr is adjusting it. I need to take the distributor cap off to get to the adjustment screw. Its a pain in the *** to adjust, its impossible to get to its not even possible to do when the car running! I set mine at 49psi with the vacuum line off of the regulator.
![](http://www.donostia.demon.nl/LARGE/PDRM7151.jpg)
Regards,
Cobra289
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Thanks! Good idea. I have to check my fuel lines to see if thats gonna work though. By the way that's a beautiful engine!
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
How much this Kirban #6547 unit raises pressure when vacuum is removed from regulator?
My current Holley afpr starts to fail.Erratic pressure setting, and dont hold always pressure when pump priming.
edit: pressure will drop 0.5 bar( from 3.3 bar to 2.8 bar) when vacuum is removed from regulator.Fits nice with tall valve covers.
My current Holley afpr starts to fail.Erratic pressure setting, and dont hold always pressure when pump priming.
edit: pressure will drop 0.5 bar( from 3.3 bar to 2.8 bar) when vacuum is removed from regulator.Fits nice with tall valve covers.
Last edited by z 28 jari; 09-30-2010 at 03:06 AM. Reason: add
#42
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Im not sure how much it raises when the vacuum is removed but if your holley afpr is jumping erratically its junk and needs to be changed.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Mine was bad on installation, kirban unit solved that quickly and no problems since.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
I'm at about 8k miles with my original hsr afpr set at 46psi. seems to be holding ok but after seeing this I think I'll be ordering the kirban unit as a precaution. I'm not even remotely interested in being stranded by a bad afpr.
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Sorry for jumping into this post but i wondering something. I recently like today am putting together my HSR swap from my old TPI i have the Holley fuel rails and when installing the Kirban AFPR into the Fuel rails i noticed that the threads are different then the rails. I was wondering if anyone ran into this problem before. Please help i am at a stand still with this build till i know what other people used to fix this problem. Thanks for any help.
#46
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
What is the thread of be supplied hardware vs the rail? Maybe Holley changed the thread at some point in production? What's stopping you from hitting a hardware store for the correct threaded stainless bolts?
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Re: HSR Adjustable Fuel Pressure Regulator Failures.
Okay here is my problem its the regulator return fitting thats giving me problems. I have a picture of the fuel hose attachment to the 90 degree fitting which fits perfect. The bad part is the other side if you see i took a picture to show how it looks. FYI this is the stock Holley Non-Adjustable FPR(it did the same thing with the Kirban 6547). If you see on the picture on the regulator side it doesnt screw all the way in(only 2 threads thats it) which thats my problem how it has to be sealed by the washer and rubber seal at the end. Please what do you think is wrong with this? Bad Fitting?Or something else. I am callling Summitracing tomorrow to see if they can open a holley fuel rail kit and check if the 90 degree fitting go into and screws all the way into the regulator. Anyone have this problem before.
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Join Date: Jun 2001
Location: Tacoma, Wa
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Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: HSR Adjustable Fuel Pressure Regulator Failures.
The fitting is obviously a different thread. For some reason I thought you were talking about the mounting screws.
From a little googling, it looks like the fuel inlet is 9/16-18. (this thread; http://forums.corvetteforum.com/c4-t...questions.html)
Can you go to home depot or a nut/bolt place and ask to borrow a bolt that size to check? You could always just go to a local hydraulic hose supply house and see if they have russel/aeroquip fitting to go from the -6an to 9/16-18 oring fitting and see if it works?
From a little googling, it looks like the fuel inlet is 9/16-18. (this thread; http://forums.corvetteforum.com/c4-t...questions.html)
Can you go to home depot or a nut/bolt place and ask to borrow a bolt that size to check? You could always just go to a local hydraulic hose supply house and see if they have russel/aeroquip fitting to go from the -6an to 9/16-18 oring fitting and see if it works?
#49
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Join Date: May 2005
Location: Malvern, Arkansas
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Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
Re: HSR Adjustable Fuel Pressure Regulator Failures.
Mine was bad from the start and didn't know it. Got a Kirban like everyone else.
#50
Re: HSR Adjustable Fuel Pressure Regulator Failures.
48psi and mine last almost 50k before it shat itself. Sucked because I was on my way to a car gathering loaded down with tent/gear/cooler too. Easy to diag once I popped the hood.
It was a friday night and autozone was the only one local that had a GN reg for $29.99! Bought that because it was my DD, ordered the kirban and warrantied out the vatozone one later. ![Smilie](https://www.thirdgen.org/forums/images/smilies/smile.gif)
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