pimpflea

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.

mike1986fyrbird

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.

formula350sd

iTrader: (2)

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

thirdgenrs

iTrader: (1)

running 48psi and mine has held up for 2 years and still goin.

JP86SS

iTrader: (1)

Had mine at 50 psi and it didn't last long.
Got the setup second hand so don't know any history on it.

vernw

iTrader: (2)

Mine was on a SuperRam, but it still never failed. Running a TPIS version now....

Cobra289

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

mickey427@optus

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.

1991CamaroRslow

iTrader: (3)

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.

LD85

iTrader: (2)

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!

Orr89RocZ

iTrader: (20)

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

LD85

iTrader: (2)

I hope you dont lean out and blow a hole in a piston,, be careful

Orr89RocZ

iTrader: (20)

i hope not either!!!! its funny cuz the pressure on the gauge says everything is cool.

rhuarc31

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.

Cobra289

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

1989GTATransAm

iTrader: (3)

I don't personally have one but I know of two failures on friends cars. Same problems as pointed out above. It's a really nice looking unit and I like the adjustment wheel. I wish they would get the problems fixed.

antman89iroc

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?

Cobra289

Yes, it is direct replacement. (See pictures above)
# Kirban 6547

SLP_GTA

iTrader: (1)

direct in the factory location or do have to fab anything??

also where does one buy this unit??

Cobra289

Guy's we are talking here about a Holley Stealth Ram setup that use his own FPR and this one has the same design as the GN cars and it is adjustable.

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

Orr89RocZ

iTrader: (20)

i had a fuel issue i thought was my regulator but turned out it was bad injectors

mickey427@optus

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

Orr89RocZ

iTrader: (20)

vette guys cant run the HSR without modifying the manifold for hood clearance or getting a new hood. thats probly why they dont have much material on that intake

customblackbird

iTrader: (15)

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?

IROCZ4BD3

iTrader: (4)

Get the Kirban one.My friend Kat suggested that I get one when I purchased my HSR used.

antman89iroc

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.

anesthes

iTrader: (12)

That and they don't keep HSR's on the same shelf as car wax

-- Joe

Orr89RocZ

iTrader: (20)

haha that is true...good to see someone actually DRIVE a vette the way they are ment to be driven

my regulator is still holding strong so far.....praying it stays that way

gta324

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.

Eats5.0's

iTrader: (1)

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.

Zepher

iTrader: (1)

43psi, still working great after 40K miles.

age

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.

formula_novice

iTrader: (1)

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.

iansane

iTrader: (1)

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.

1hotroc

iTrader: (3)

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!!!

vindeezl

iTrader: (2)

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

1hotroc

iTrader: (3)

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.

iansane

iTrader: (1)

.....flip it.

Cobra289

See picture


Regards,
Cobra289

1hotroc

iTrader: (3)

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!

z 28 jari

iTrader: (1)

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.

1hotroc

iTrader: (3)

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.

rhuarc31

Mine was bad on installation, kirban unit solved that quickly and no problems since.

thunder85

iTrader: (1)

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.

Fermin91rs305

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.

iansane

iTrader: (1)

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?

Fermin91rs305

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.

iansane

iTrader: (1)

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?

abray1

Mine was bad from the start and didn't know it. Got a Kirban like everyone else.

Drac0nic

If you have to you can use one off an 86-87 3.8L FWD car (think Cutlass Sierra or some thing along those lines.) I believe it will have a slightly higher base pressure but should be LOTS more common than a Buick GN regulator would be I imagine.