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| Accelerator pump adjustment https://slantsix.org/forum/viewtopic.php?t=16066 |
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| Author: | Jeb [ Mon Feb 06, 2006 4:47 pm ] |
| Post subject: | Accelerator pump adjustment |
I tinkered out in the shop today with the acc. pump linkage for a holley 1945 (piece with U in it) and I fashioned one that could be easily unhooked and slid into a different pump actuating slot. My question is, will this give me a better/quicker pump shot by moving the linkage to the shortest slot? I really don't care about mileage, I just want a fatter pump shot to cover the lean spot before the power circuit kicks in. Will I have to do all the measuring and adjusting when I'm done too? |
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| Author: | CStryker [ Mon Feb 06, 2006 4:54 pm ] |
| Post subject: | |
I tried all the different slots on mine and didn't notice an appreciable difference. Of course I also discovered some p-valve issues once I actualy tore into it, so my experience may be moot. |
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| Author: | edwinjmartz [ Tue Feb 07, 2006 1:52 pm ] |
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If you pull the accelerator pump there is an adjustment on the shaft made by a clip that corresponds with the linkage slot you use. I can't remember which goes with which. |
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| Author: | Jeb [ Tue Feb 07, 2006 6:31 pm ] |
| Post subject: | |
So the shortest slot is the "quickest" one? |
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| Author: | edwinjmartz [ Sun Feb 12, 2006 12:51 pm ] |
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Jeb, I didn't play with mine so I couldn't say. I just set it where the old one was when I re-built it. It seems to me that the set-up with the longest stroke for the pump would produce more jump. |
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| Author: | emsvitil [ Sun Feb 12, 2006 1:02 pm ] |
| Post subject: | |
Quote: Jeb, I didn't play with mine so I couldn't say. I just set it where the old one was when I re-built it.
It seems to me that the set-up with the longest stroke for the pump would produce more jump. Which would be the inside (shortest hole). It's basically a rocker arm. With the linkage to the throttle, the hole (wherever it is) moves a constant vertical amount. When you're on the inside hole, the arm moves thru a greater angle for a given amount of 'hole' travel. Thus the other end of the arm moves farther when you're on the inside hole. |
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