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#81
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Uh oh. What about the lines?
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#82
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#83
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You must feel like a Fuel Delivery Expert after all this. Congrats for your tenacity. Jim
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65 Catalina sedan. Allen Thomas Performance 495. KRE Heads at 310cfm ported by SD Performance, ProSystems Dominator carb on ported Victor intake, P-Dude custom grind hydraulic roller, MSD ignition, 3.50 Moser/Ford rear. F-Glass front bumper by son Rob, rear by the old man and joint effort for trunk lid. 3950# w/driver. Best of 9.5761/139 on 175 shot, 6.01 /114 in 1/8. |
#84
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but - I also have a Holley electric pump mounted at the tank. Been that way for many, many years with no issues. K
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'63 LeMans Convertible '63 Grand Prix '65 GTO - original, unrestored, Dad was original owner, 5000 original mile Royal Pontiac factory racer '74 Chevelle - original owner, 9.85 @ 136 mph besthttp://www.superchevy.com/features/s...hevy-chevelle/ My Pontiac Story: http://forums.maxperformanceinc.com/...d.php?t=560524 "Intro from an old Assembly Plant Guy":http://67-72chevytrucks.com/vboard/s...d.php?t=342926 |
#85
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I have a Holley mech. fuel pump on my car. I think it's an 80GPH. No issues.
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#86
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we used braided lines instead of the factory steal line. thats all.
patrick
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#87
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to sprinkle in another wrinkle...
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You might want to if you haven't started turning a wrench yet. |
#88
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I've had it on and off and replaced so many times that I no longer remember which way is which. I haven't done anything further yet until the Holley pump gets here. I needed a break for a couple of days. Last edited by 61 389-348; 10-02-2012 at 09:16 AM. |
#89
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I'm going to smell like gas for life, butT at least this time, it's the 'other' kind of gas!
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#90
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Been following this thread for AWHILE!!! Yeas, I have had the Holley 110 on my car for 5 years with ZERO issues. I have a 400 bored .030 over with a 670 Holley carb and I never run out of fuel. The Tempest had a 2BBL 326 with 5/16th fuel line. Weird that you have had so many pumps go bad. I have an Airtex on my 62 Catalina with a 67 326 and it has been fine.. Although, I have not had it over 4K many times.
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1967 Pontiac Tempest 2dr HRDTP Coupe 468 C.I. 500 HP 5 speed = FUN!!! 1990 Chevy Suburban R2500 Daily Driver 1986 Volvo DL245 Wagon.. Project car!!! The Burb Files |
#91
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http://youtu.be/8wH7F0oCAes Should have just left it installed. The Airtex I repleced it with the week before the 2012 event only made it as far as the Motel 6 in Milan |
#92
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Fuel pump is now replaced with the Holley and the world is fine. Full throttle is fine. Tip-in stumble is gone. Let's see how long it lasts. Can it get through tomorrow? Do I REALLY believe I have it this time ….. no. It will have to prove itself to me and that will take time, but for now, I’m rolling again.
Anyway, I want to say a huge thanks to everyone who has racked their heads to come up with ideas for me. |
#93
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Keep on truckin' !! I think you got it.
Jim
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65 Catalina sedan. Allen Thomas Performance 495. KRE Heads at 310cfm ported by SD Performance, ProSystems Dominator carb on ported Victor intake, P-Dude custom grind hydraulic roller, MSD ignition, 3.50 Moser/Ford rear. F-Glass front bumper by son Rob, rear by the old man and joint effort for trunk lid. 3950# w/driver. Best of 9.5761/139 on 175 shot, 6.01 /114 in 1/8. |
#94
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man, talk about an elusive gremlin!
hopefully they won't, but keep us posted if things regress. |
#95
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It was fine all weekend. I still don't believe and it will take a while before I'm confident in it, but so far ….
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#96
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An update:
Still hard to believe that I went through that many fuels pumps, but the car is still running great. I took it out to National Trails on the last day of the season. And that thing is consistent with 60' varying by a few 1000th and ET varying by about 5 100ths from best to worse. |
#97
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Same problem
I have had the same problem. Which Holley fuel pump did you use?
I have avoided the problem by not getting to the pedal too much but what fun is that... Thanks |
#98
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And it wasn't a matter of just using part throttle. I had the last two Carter pumps fail completely, one within 50 miles or so and one fail within 5 miles. The only pump that lasted for a while was the 50 yr old NOS AC pump that I bought at the swap meet at Norwalk in 2011 to get me home after three failed new pumps. That pump was fine all year and was only replaced a few days before the 2012 Pontiac Nationals because I was REAL nervous about a 50 yr old pump diaphragm on today's ethanol based fuels. Should have left it in there and maybe avoided the hell I went through for several months. And it's not that I have some highly modified engine which needs a electric pump. It's a stock base 389-303 A/C automatic, which runs all of a 15.00 at 90 mph. The mods are really only a Petronix II and a replacement 1406 for the AFB. The AFB was only rebuilt three times and then replaced to see if it was the problem. So my fuel needs are pretty modest. Last edited by 61 389-348; 11-09-2012 at 10:22 AM. |
#99
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Please post the pump brands, their part numbers, how many of each you tried that didn't work and which one (besides GM NOS) did work.
(Slightly O/T but one of my first PY posts dealt with a similar problem - the Airtex pump from NAPA was the culprit and Airtex customer service (at that time anyway) was worthless.) |
#100
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I have heard multiple mechanics tell of similar experiences like this only with thermostats.
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"If you do everything you'll win" -LBJ 13 Smiles per Gallon: 66 Bonneville wagon 66 Bonneville 2d HT - In perpetual progress |
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