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Author
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Topic: It Lives !! (plus a carb question)
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kid vishus
Gearhead Posts: 2066
From: huh?? what? who? ME!?!?!?!
Registered: Oct 2000
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posted 04-15-2002 10:35 PM
   
Yep, got the racer fired today for the first time this year.  It sounds pretty good, but then again, it has been since thanksgiving since I last heard it run. ALso, I took my strip dominator off and put that Vapours intake on it even though it was cast for the 2v heads (and I'm running ported 4v heads). Now, while the car is idling, it acts like it has a stuck float, (fuel runs out of the primary side boosters). Enough runs out that I have to keep the idle set higher than I normally would just to keep it running, otherwise it loads up real bad and dies. I pulled the site plug out of the float bowl and only a little dribbled out while the car was running, and yet the fuel continued to run out the boosters. Could it be possible that the smaller runners dumping into the bigger port in the head has enuff velocity now that it has screwed up the signal to the carb? I have never had this happen before (every other time fuel ran out of the booster it was caused by a high, or stuck float). I'm sure its probably something ximple, but I'm basically lost and need some help on this one.
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clevelandstyle
Gearhead Posts: 199
From: Connersville, IN
Registered: Jul 2001
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posted 04-15-2002 10:46 PM
Make sure there is no obstruction in the vent tubes. If the air can't get out the tubes it forces pressure out the boosters.
I had this problem when a spider blocked the vent tubes on an old carb.------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 351C 4V
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Hans olsson
Gearhead Posts: 149
From: Eskilstuna Sweden
Registered: Apr 2000
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posted 04-16-2002 11:28 AM
Kid, check the power valve and the gasket between the metering block and the main body.I assume you are using a holley?  ------------------
- 71 Mach1 351c
- E/SA 11.89-110
- F/SA 11.92-110
[This message has been edited by Hans olsson (edited 04-16-2002).]
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kid vishus
Gearhead Posts: 2066
From: huh?? what? who? ME!?!?!?!
Registered: Oct 2000
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posted 04-16-2002 04:59 PM
I am using a Holley. But it has no power valve in it at all. However, I'm not sure what I did, but it quit running fuel out the boosters. I sprayed some carb cleaner followed by WD-40 down the vent tube, and set the car down off the jack stands back on the floor.
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clevelandstyle
Gearhead Posts: 199
From: Connersville, IN
Registered: Jul 2001
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posted 04-16-2002 07:57 PM
Those darned jack stands will do it every time.  ------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 351C 4V
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kid vishus
Gearhead Posts: 2066
From: huh?? what? who? ME!?!?!?!
Registered: Oct 2000
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posted 04-16-2002 08:07 PM
quote:
Originally posted by clevelandstyle:
Those darned jack stands will do it every time.
Actaully, I was thinking that might have had something to do with it. The car normally sits fairly low in the nose (forward rake) and that is the attitude the car was sitting at when the floats were set last year. But when it is on the jackstands, it sits level. Regardless of what caused it, its fixed now, and idles at 1100 rpm without loading up and die-ing, (or creating so many fumes it runs you out of the garage first)
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Fordwiser
Journeyman Posts: 89
From: Metamora, Illinois
Registered: Dec 2000
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posted 04-16-2002 09:06 PM
COOL! Got my Cleveland fired up monday night too! Seems like a long time since last October. Hopefully, we're headed to Byron Dragway this weekend to see how it runs.
Roger
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jsracingbbf
Journeyman Posts: 31
From: Batesville,MS. , U.S.A.
Registered: Mar 2002
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posted 04-16-2002 09:23 PM
Back when I ran a carb, Kid I remember this happening at the start of each season. I always just thought the needle and seat finally decided to seal off, or trash in the air bleed finally cleared. I don't know but we would tap on the bowl and do all manner of silly tricks then all of a sudden like magic the problem disappeared. By the way do you run Alky on your clevland? I used to back a couple of years ago when I ran clevlands and the motor really liked it. I started with a C & S specialties holley 950 that I bought used from Rich Kent ( off his clevland powered Pinto ) anyway the car loved the alky and I kept it on it. I regretable sold the carb and put a toilet on mine later. The toliet was good for another tenth but I loved that carb! Anyway i just wondered if you had considered it. By the way I like your car and Especially cause it has a clevland. ------------------
Jerry Smith
69 Pro ET Mustang
514 cid Alcohol/ Enderle injection
5.60's@ 119 MPH 1/8th
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kid vishus
Gearhead Posts: 2066
From: huh?? what? who? ME!?!?!?!
Registered: Oct 2000
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posted 04-16-2002 09:49 PM
quote:
Originally posted by jsracingbbf:
By the way do you run Alky on your clevland?
Yep Its a 750 that was modified by BG about 10 years ago and now flows 920 cfm. Alchy is the only way to bracket race Especially if you're like me and like running both box and no box classes on the same day and dont get any cool down time between passes. Plus its so much more consistent than it ever was on gas.
When I switched from gas to alcohol the car picked up almost half a second in the qrtr. And the guy I bought the carb from put on a toilet, and his car picked up another .3 after he switched. By the way, his car is a tube chassis 62 falcon with a 372 4v headed cleveland. It runs 10 ohs in the qrtr, but it has a powerglide and weighs 2900 lbs with driver.
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Hemikiller
Journeyman Posts: 89
From: Clinton, CT
Registered: Feb 2002
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posted 04-17-2002 11:20 PM
Kid, had a similar problem with a friends car today. As the car heated up, and reached operating temp, it would start dripping fuel out of the accelerator pump nozzles. Running, not running, whatever, if the motor was hot, it would drip. Checked everthing, all was OK. What I came up with is that he ended up with a tank of "winter blend" gas. His problem started almost immediately after getting fuel yesterday. Up here in the Northest, we are saddled with the watered down gas that has MTBE. This is an oxygenate and act to imrove emissions and cold start qualities of engines in cold weather. Also, I believe it has the effect of lowering the vapor pressure and boiling point of the fuel. Essentially, it was 80 yesterday, 85 today, and he has fuel that's designed for 55 degrees and below. When the motor heat soaked, the fuel would just expand in the accelerator pump and start dripping out the shooters. I know that you run alcohol, but it may have to do with the formulation of fuel you are using. Just a thought......
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