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| holley 2 bbl accelerator pump tuning? https://www.slantsix.org/forum/viewtopic.php?t=7277 |
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| Author: | moturbopar [ Sat Oct 18, 2003 7:01 pm ] |
| Post subject: | holley 2 bbl accelerator pump tuning? |
Ok my car finally passed emissions, so I was able to pull of the stock carter and put on my $25 holley 2bbl I got from a swap meet. The carb is brand new but has nothing for the charcoal canister. The carb is for some AMC 6cyl from the early 60s. Anyways I bolted it on and the car idles and runs like never befor! has quite a bit more power. The problem is it has a bog when you punch it off idle, at higher engine speeds its not as noticable but is still there. I have a white cam set on number 2 with a 25 shooter. This is the same setup I had on my 600 holley bolted onto a small block and it ran fine but on this it seems to be lean. Anyways when you are trying to cover up a hole off idle or initial tip in would I need to increase the shooter size or the cam or both? Its been along time since I have messed with a holley. I am thinking of trying a larger shooter maybe a 30 to get fuel in faster, but dont want to spend the $$ if I need something else. Thanks |
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| Author: | DusterIdiot [ Sat Oct 18, 2003 8:22 pm ] |
| Post subject: | More shot... |
White cam is a real small cam, and 25 is a start... Your next two 'shooters' are 28 and 31, I'd try an Orange 466 cam in the #1 position with the '25' and move up to the 28 if the duration is good but the shot isn't big enough...31 is a pretty big shot. FYI anything over the 31 and you have to get a hollow screw to make it flow correctly (They're like $10 for the screw, Holley has discontinued them, but moroso has picked up production). If you have to go to a pink 330 cam, something isn't right.... -D.Idiot |
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| Author: | moturbopar [ Mon Oct 20, 2003 4:05 pm ] |
| Post subject: | |
Thanks. I tried a pink cam the other day (happened to have it laying around), but it still bogged then sputtered and went rich farther up in the RPMs. So I think I will try a slightly bigger shooter and see what happens. Thanks again |
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| Author: | Doc [ Mon Oct 20, 2003 5:48 pm ] |
| Post subject: | |
Put a vacuum guage on it and check your power valve rating. Slants usually pull some good idle vacuum so you may need to up the power valve to 8.5 - 10.5 range in order to get the power circuit to kick-in sooner. DD |
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| Author: | DusterIdiot [ Mon Oct 20, 2003 10:34 pm ] |
| Post subject: | Ancient Carb... |
According to some parts books the Holley 2300 was used in some applications on 6 and 8 cylinder Rambler/AMC/Nash...most 6 cyls up to 1964 used Carters...never thought I'd look up a Holley 'R' number that was only in the 2000 series (your app. might be coded R-2144...). Doc's on the right track, with my Hpak at cruise I pull 15" so the closest I can get is 10.5 an 8.5 leaves a bog window between 11 and 9" on the gauge. what Jets are you running? 52's? -D.Idiot |
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| Author: | moturbopar [ Tue Oct 21, 2003 8:36 am ] |
| Post subject: | |
The power valve says 9.5 on it. As for jets They are 50s, They seem to be pretty close. The plugs are a tan color. The carb runs great everywhere but a hard launch. Normal drivings great. I just cant get a good launch without the bog. I havnt been able to get the bigger shooters yet, just been driving the car the way it is. Thanks again guys. |
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