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#1 |
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All good advice. But I also believe the air was better this weekend, especially on Sunday.
If your squirters were borderline lean, the air could have leaned them out more. (footbraking) If you're 2-stepping, it could be borderline lean jetting.
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LOCOMOTION Racing |
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#2 |
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The idle air bleeds won't cause it to hesitate, it would just sound like a V-6 at idle if they are dirty.
I'd say to go up on the squirters. Is that the Texas two step you are talking about Myron? If Chip is a little lean doing that, maybe someone should have took him a couple beers! No wonder it took till 300 am to finish that race Saturday!
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Chris Bowman The Mountain State Mustang 1984 Mustang GT350 |
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#3 |
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I'm footbraking between 2000 & 2500 rpm's depending on track.
The air saturday was similar to the first 2 tracks. It is a brand new carb. Sunday Morning: We went up on the squirter. Went up on the timing. Raised the floats Adjusted the pump arms. It did fine the first 3 passes. 3rd rd I dropped rpm to 2200 and it did it again. HELP ME HELP ME HELP ME. Chip |
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#4 |
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Chip call me ..../I think i can help...
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Danny Waters, Sr / 73 Duster "340" |
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#5 |
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>> It did fine the first 3 passes. 3rd rd I dropped rpm to 2200 and it did it again.
Oh, ok. I didn't get a chance to talk to you after the run. I figured you'd only give me an .022-.024 after being .000, so I was surprised at the .04. I figured maybe the polished rims blinded you. ![]()
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Michael Beard - NHRA/IHRA 3216 S/SS |
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#6 |
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First make sure all the passages are clean. If you still have the power valve, take it out and plug the hole. Go up 2 or 3 on the jet. That is what made it go away on my Top Stock. Holley 4779
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#7 |
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Jeff,
The carb originally had the PV blocked. I like leaving between 2000 and 2400, at those RPMs it had a horrible idle. We put a PV in and rejetted. Carb idles geat now. Thanks Chip |
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#8 |
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Sounds like your idle passages might be blocked. I had one doing that. Didn't like to idle, but seemed ok @ wot. Quick fuel fixed it at the track. Idle passages were blocked amoung other things. Took a lot. After it was fixed, it made enough difference to bust 2 8/34 gears and 2 pro trans. I assume it is an out-the-box 4779?. Usually a stumble is lack of fuel. Just got to find it. On the T/STK 360 we ran 76 to 78 jets on all 4 corners and no pv. We left on a 2 step, but it would launch almost as well footbraking. No stumble and we ran 7 lbs pressure. Still run 7 lbs.
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