Problem with the Holley 512-501
04-12-2015, 09:35 PM
#1
Junior Member
Thread Starter
Join Date: Aug 2013
Location: San Antonio,TX
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
Problem with the Holley 512-501
Any body else running into a problem with the Holley 512-501 fuel pressure regulator (pic is of regulator) hitting bottom of the upper plenum? I can't turn the dial to adjust the fuel pressure the plenum seems like it sitting on top of it not letting me turn the dial. Thanks in advance
04-13-2015, 04:04 PM
#2
Member
iTrader: (3)
Join Date: Apr 2010
Location: New Jersey
Posts: 397
Likes: 0
Received 8 Likes
on
7 Posts
Car: 87 Monte Carlo SS
Engine: 89 350TPI Transplant
Transmission: 2004r
Axle/Gears: 3.73
Re: Problem with the Holley 512-501
Yes, I had the same problem when I installed the Holley FPR. I had to remove the plenum and use my die grinder to remove some material from the bottom of the plenum. Be careful not to go too far. When I got it all back together, had plenty of clearance with the plenum. But the darn Holley FPR leaked. Holley said it was a bad diaphragm. So I switched to another brand AFPR. Good luck.
04-13-2015, 04:16 PM
#3
Junior Member
Thread Starter
Join Date: Aug 2013
Location: San Antonio,TX
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
Re: Problem with the Holley 512-501
Thanks Fred SS I guess I'm going to have to get the old die grinder out and put it to some use. Daaang I haven't ran mine yet so I'm hoping Holley FPR doesn't leak but if it does any recommendation as to what brand would be good use? Thanks in advance!!!
04-13-2015, 06:19 PM
#4
Supreme Member
Join Date: Jul 2009
Location: Kitchener, ON
Posts: 2,327
Likes: 0
Received 7 Likes
on
5 Posts
Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Re: Problem with the Holley 512-501
I've used that Holley regulator with no problem. Is it possible that those aftermarket runners locate the plenum smidge lower than stock?
04-13-2015, 08:25 PM
#6
COTM Editor
Re: Problem with the Holley 512-501
i have used these holley fpr on several of my camaros without issue... all with stock runners
04-14-2015, 10:01 AM
#7
Member
iTrader: (3)
Join Date: Apr 2010
Location: New Jersey
Posts: 397
Likes: 0
Received 8 Likes
on
7 Posts
Car: 87 Monte Carlo SS
Engine: 89 350TPI Transplant
Transmission: 2004r
Axle/Gears: 3.73
Re: Problem with the Holley 512-501
TXwildman, the issue I had with the leaking Holley AFPR was about 3 years ago. I would hope Holley solved the problem by now. As evidence by comments from other members, it would appear that they have. The clearance issue was with stock runners. Eventually, I went with a TPiS AFPR. Difficult to adjust, but I don't need to get to it often. Let us know how it turns out.
Thread
Thread Starter
Forum
Replies
Last Post
BlackphantomZ28
Engine/Drivetrain/Suspension Parts for Sale
0
08-22-2015 01:00 PM
86IROC112
Engine/Drivetrain/Suspension Parts for Sale
4
08-17-2015 02:00 PM