Holley 12-1800 dominator fuel pump
09-01-2014, 11:36 AM
#1
Holley 12-1800 dominator fuel pump Anyone take this over 80psi?? I am out of injector and curious if anyone cranks up the base with any results?? My DCs are 125% with 80lb injectors on gas. I know I need larger injectors but wanted to squeeze a little more out of this. Not sure on power level but 19psi 8.8@152 58base
09-01-2014, 12:12 PM
#2
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I'm not up & running yet, but I have your injectors:
https://ls1tech.com/forums/parts-cla...injectors.html
https://ls1tech.com/forums/parts-cla...injectors.html
09-01-2014, 12:55 PM
#4
TECH Enthusiast
Doug, you can always get a VersaFueler. I would go with a standalone at your point though.
For your question, I wouldn't take the pump up that high, it will reduce the life, and not be good for it in general.
For your question, I wouldn't take the pump up that high, it will reduce the life, and not be good for it in general.
09-01-2014, 01:03 PM
#5
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09-01-2014, 01:38 PM
#6
I was a little Leary of buying this pump when I saw the 80psi rating but figured it would be fine. Now regretting not going with the magnafuel. I'll grab a set of injectors and see how much that helps
09-01-2014, 03:30 PM
#7
On The Tree
Ya I have looked at those versafuelers I heard they suck to tune with but will look into it myself
I was a little Leary of buying this pump when I saw the 80psi rating but figured it would be fine. Now regretting not going with the magnafuel. I'll grab a set of injectors and see how much that helps
I was a little Leary of buying this pump when I saw the 80psi rating but figured it would be fine. Now regretting not going with the magnafuel. I'll grab a set of injectors and see how much that helps
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09-01-2014, 03:40 PM
#8
Wow that's crazy I heard good things about the magnafuel just wanted the Holley because ofthe street use . Ill step up on the injector and I'm sure that will take care of it. Time to shell out another 2k lol
Last edited by Camaro9969; 09-01-2014 at 03:48 PM.
09-01-2014, 03:46 PM
#9
On The Tree
You can get into a set of Holley 120's or 160's and driver box from AEM or Versafuel for half that price. These injectors have great manners and there is no down side (besides the wiring) to going that way.
09-01-2014, 03:49 PM
#10
So the Holley can't handle about 80psi? I tried cranking the base and it seemed worse I couldn't tune around it like I could with my twin 255/340 in tank set up
09-01-2014, 05:56 PM
#15
9 Second Club
If fuel pressure is rising and staying fairly stable, then you should see extra flow.
If fuel pressure is taking a dive under heavy load, then no point trying to run more.
If you want pumps that flow, are reliable and handle pressure...Bosch.
Or at a push, a boostapump firing more voltage into your current pumps should yield a decent gain.
but really you need to establish if it is larger injectors you need, more fuel flow via pumps, or maybe even both.
09-01-2014, 06:32 PM
#16
On The Tree
What is fuel pressure doing ?
If fuel pressure is rising and staying fairly stable, then you should see extra flow.
If fuel pressure is taking a dive under heavy load, then no point trying to run more.
If you want pumps that flow, are reliable and handle pressure...Bosch.
Or at a push, a boostapump firing more voltage into your current pumps should yield a decent gain.
but really you need to establish if it is larger injectors you need, more fuel flow via pumps, or maybe even both.
If fuel pressure is rising and staying fairly stable, then you should see extra flow.
If fuel pressure is taking a dive under heavy load, then no point trying to run more.
If you want pumps that flow, are reliable and handle pressure...Bosch.
Or at a push, a boostapump firing more voltage into your current pumps should yield a decent gain.
but really you need to establish if it is larger injectors you need, more fuel flow via pumps, or maybe even both.
Most pumps do suffer a greatly reduced lb/hr hit the higher you turn them up but this thing isn't even being pushed to 50% on 80 lbers.
09-01-2014, 06:53 PM
#17
He knows that he is out of injector. He's trying to compensate for that by turning up the fuel pressure. This pump is nowhere near maxing out on his 80# injectors unless one of the pumps in the housing is failing or has failed.
Most pumps do suffer a greatly reduced lb/hr hit the higher you turn them up but this thing isn't even being pushed to 50% on 80 lbers.
Most pumps do suffer a greatly reduced lb/hr hit the higher you turn them up but this thing isn't even being pushed to 50% on 80 lbers.
09-01-2014, 06:57 PM
#18
What is fuel pressure doing ?
If fuel pressure is rising and staying fairly stable, then you should see extra flow.
If fuel pressure is taking a dive under heavy load, then no point trying to run more.
If you want pumps that flow, are reliable and handle pressure...Bosch.
Or at a push, a boostapump firing more voltage into your current pumps should yield a decent gain.
but really you need to establish if it is larger injectors you need, more fuel flow via pumps, or maybe even both.
If fuel pressure is rising and staying fairly stable, then you should see extra flow.
If fuel pressure is taking a dive under heavy load, then no point trying to run more.
If you want pumps that flow, are reliable and handle pressure...Bosch.
Or at a push, a boostapump firing more voltage into your current pumps should yield a decent gain.
but really you need to establish if it is larger injectors you need, more fuel flow via pumps, or maybe even both.
09-01-2014, 07:01 PM
#20
On The Tree