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#1
05-18-2000, 02:07 PM
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I have been experiencing intemittent bogging when I whack the throttle on the 3rd yellow. This, of course, never happens in time trials. It always happens later elimination
rounds. Last weekend I was getting consistent 60 footers of 1.64 to 1.67. In the 2nd round of elimims, big time bog--2.11 60 ft. The air didn't change that much from 1st to 2nd round. The car never misses a beat in the burnout box but sometimes at the launch---puke, sputter go--2.5 sec 60 ft--loose round. Anyone else had to solve this problem? Please help so I know what to try first.
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fasteddy |
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#2
05-18-2000, 02:07 PM
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I have been experiencing intemittent bogging when I whack the throttle on the 3rd yellow. This, of course, never happens in time trials. It always happens later elimination
rounds. Last weekend I was getting consistent 60 footers of 1.64 to 1.67. In the 2nd round of elimims, big time bog--2.11 60 ft. The air didn't change that much from 1st to 2nd round. The car never misses a beat in the burnout box but sometimes at the launch---puke, sputter go--2.5 sec 60 ft--loose round. Anyone else had to solve this problem? Please help so I know what to try first.
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fasteddy |
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#3
05-18-2000, 06:40 PM
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Tell us a little more about your combination. What size engine, Type and size of carb etc. Sounds like your footbraking. is this correct?
------------------ PROBRD (probrd1@aol.com)
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455: 1/8th mile 6.52 @ 104 1/4 mile 10.43 @ 128 |
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#4
05-19-2000, 10:15 PM
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Well, "It's a quadrajet" will be the first three words, I'd wager.
------------------ Jesus is coming again. Look busy!
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"Democracy is a beautiful thing, except for that part about letting just any old yokel vote." ~Jack Handey, Deep Thoughts |
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#5
05-20-2000, 10:08 PM
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Hence the name 'quadra-bog'.
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#6
05-21-2000, 01:34 AM
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if it's a quadrajet tighten the sec. springs a bit and insulate the carb from the intake. the problem will disapear . if its a carb problem that is. mike
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so many pontiacs, so little time.................. moderator is a glorified word for an unappreciated prick.................. "Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." --Albert Einstein "There is no such thing as a good tax." "We contend that for a nation to tax itself into prosperity is like a man standing in a bucket and trying to lift himself up by the handle." - Winston Churchill |
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#7
05-21-2000, 04:14 AM
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I agree that Holley is a better carb than a Q-jet for all out performance. A q-jet can be a better carb for the street though. With the small primaries it will get better mileage. I went 11.80's in my LeMans before going to a Holley and it didn't bog at all, in fact it was very responsive and had excellent 60's. Fact is with proper mods and tuning a q-jet can perform very well. Super stockers go low 10's high 9's with q-jets and big heavy cars. I prefer a Holley mostly because I think they are easier to tune and I understand them more.
Tim Corcoran
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Tim Corcoran |
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#8
06-29-2000, 02:01 PM
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Found the problem--squirters too small. Opened up from .029 to .034--hesitation gone. Thanks, guys. Eddy
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fasteddy |
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#9
06-29-2000, 04:37 PM
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fasteddy
I foot brake also and was having a similar problem. It was the float level. I adjusted the float and the bog was gone. Tim Corcoran
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Tim Corcoran |
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#10
06-29-2000, 05:14 PM
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I need to retroact some information for all you guys that responded to this post. I tried my darndest to post but the system wouldn't let me until day before yesterday.
Anyway, here it is: I run a 469 with 16 heads with a Holley 850 dp atop a Torker with a 2" adapter. I use a mild Comp Hyd Roller, BME Aluminum rods and Ross pistons. I foot brake my 76 GP and power is through a TH400 with a 3800 stall Continental,to a 9" Ford with a 4.10 locker. Thanks again for your responses. Oh by the way Tim, the float level was the first thing I thought of too.
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fasteddy |
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#11
07-25-2000, 08:15 AM
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I'll be boggin' down the Grove track on Sunday. Curious to see how the Q-Jet does without the Primary choke plate. An otherwise great running street carb&combo until I removed the Primary Choke plate. Now suspecting that the idle went to pot & the plugs picked up some carbon. As if I'm running rich. Probably will bring the choke plate along to the track for re-install for performance check.
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12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
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