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292 Y block with dual quad carter carbs stalls when trans is shifted in neutral.

Posted By Joe D 6 Years Ago
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292 Y block with dual quad carter carbs stalls when trans is shifted...

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Joe D
Posted 5 Years Ago
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Kultulz,
The timing is 28 BTDC with vac adv hooked up to rear carb port.
Intake shows a steady 14"HG
I tried stock fuel pump (6 pounds) this weekend and engine still stalled.
I do not understand what you are saying about the crankcase vent and special valley pan? The truck ran fine for 2 years. I just hooked up a hose to the fitting to route oil mist away from the back of the engine.

Ted,
The Idle can not be turned down below 1000rpm. I talked to the shop who just did the rebuilds and they said that they could  calibrate to try and correct this issue. We could not ID the Carters. The guy said they were 450-500 CFM carbs based on the size of the throats and they worked fine. 
I'm going to try getting an adaptor for my Edel manifold to accept a single carb. I'm not sure if there is such a thing? Or I'm going to purchase a single carb 4 BBL manifold before I send the old Carters WCFB's back to California for calibration.

Kultulz,
I don't believe its fuel percolation but would like to try some racing fuel in 5 buckets sometime, its just a little pricy.
There is an oil fill tube cap. It's brushed chrome and a little hard to see.

Sandbird,
That's not my engine on page 5. Both of my chokes have been removed and the vacuum holes are plugged.

Thanks Fellow Y- blockers for your help!

Joe D (The Frig)








Joe D (The Frig)
1960 F-100 - 292 Y-Block
Philly Burbs
Sandbird
Posted 5 Years Ago
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Joe D,
I realize that wasn't your engine, Page 10 has a picture of what I thought was your engine and the chokes look like they're not plugged. I thought the image on page 5 would show that others saw fit to block the unused choke(s) off. I guess the dark shadows fooled me. I've read teachings that claim a lean mixture burns slow which makes the engine need more advance than usual. My thoughts are the low 14" vacuum reading is too low to pull enough fuel through the idle circuits. I asked about a compression reading to see if it is normal, if it isn't your timing chain may have jumped time or your engine may just be tired. These thoughts are depending on that there are no vacuum leaks and your carbs are perfect. If you have good compression I would go forward with trying a different carb and manifold.
charliemccraney
Posted 5 Years Ago
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A high idle that cannot seem to be solved is not running fine.  There is something wrong which is causing that.  The only way it can idle too high is by getting too much air.  There is either a vacuum leak or the throttle plates are not closing for some reason.  


Lawrenceville, GA
KULTULZ
Posted 5 Years Ago
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Kultulz,

The timing is 28 BTDC with vac adv hooked up to rear carb port.
Intake shows a steady 14"HG

I tried stock fuel pump (6 pounds) this weekend and engine still stalled.

I do not understand what you are saying about the crankcase vent and special valley pan? The truck ran fine for 2 years. I just hooked up a hose to the fitting to route oil mist away from the back of the engine.


I am a$$-u-me(ing) it is showing 28 BTDC (with vacuum signal included) as a result of heightened curb speed idle and as a result supplying a PORTED VACUUM SIGNAL to the DIST.

The HIGH CURB IDLE may be as a result of the secondary throttle blades not being adjusted correctly. I would not send them back off as the re-builder has no clue as he did not check this adjustment on re-kitting.

Your oil fill cap. Is it vented or closed to the atmosphere?

Heightened fuel pressure may cause an enriched fuel mixture. There is no FORD data that I know of other than LINC-MERC regarding CARTER WCFB. You may have to research scrub 283 Dual Carters of the period for recommended fuel pressure. 



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Thanks Y Blockers!! We will correct this issue soon! A friend of mine told me when I first bought this old hot rod and was having trouble with the points, to "remember it's all about the journey".

Kultulz
The oil fill cap is vented and I put a sock around the vent holes to catch the oil mist.

Yesterday I ordered a stock cast iron manifold (single 4 BBL) and a friend at work is giving me a Edel carburetor. I really believe it's the throttle plates not closing all the way and creating a lean condition (not flooding). This  explains why the idle screws are all the way backed out and it idles at 1000 RPM. Engine runs strong and always starts back up and recovers.

We will know for sure if its the carbs once I test drive with the single carb set up.

Anyone out there know someone who can calibrate these Carter WCFB's?

Thanks,
Joe D (The Frig)




Joe D (The Frig)
1960 F-100 - 292 Y-Block
Philly Burbs
KULTULZ
Posted 5 Years Ago
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Anyone out there know someone who can calibrate these Carter WCFB's?


Well, actually you can as it needs to be done and then run to make sure everything is correct.

Is your E-MAIL address shown here?



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KULTULZ
Posted 5 Years Ago
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I do not understand what you are saying about the crankcase vent and special valley pan? The truck ran fine for 2 years. I just hooked up a hose to the fitting to route oil mist away from the back of the engine.


Ok, let me see if I can explain this correctly -

The 1957 8V intake had an increased plenum area for better breathing. The carb pad casting couldn't be raised as it also had to fit under the hood of the 57 BIRD. So it was cast with a deeper plenum. A special valley cover with relief was used to allow for the increased depth. Without it, the manifold plenum bottom would overheat damaging the bottom side of the intake.

http://forums.y-blocksforever.com/uploads/images/26e6cf96-f00c-41e7-bf46-1442.jpg

Does yours have this valley pan? Also, the 1957 E-CODE used a road draft tube off the rear of the pan.



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Kultutz,

I'm going to remove the carbs and manifold this weekend and prep for the stock manifold and single carb which I should have next week.
I will remove the valley cover and send pictures. The guy who did the rebuild on the truck said everything was stock when I asked him about the cam. He also said that he believed it was the original 292 Y-Block in the truck. !960.

My e mail address is jderita@comcast.net

Thanks again!

Joe D

Joe D (The Frig)
1960 F-100 - 292 Y-Block
Philly Burbs
charliemccraney
Posted 5 Years Ago
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If he used the word believe, then you don't really have any idea what is going on.  Belief is a lot different than knowledge.  It doesn't necessarily mean anything bad but basically anything said by him should be discarded until evidence supports it.  The 2-4s absolutely is not stock in 1960 on any Y-Block.  So there goes his everything is stock claim.

You don't need to remove the valley pan.  I would not advise that unless you have a problem with it or you do need a different one for the 2-4 intake.  Compare it to kultulz picture or just post a picture of it installed.  The difference will be obvious.


Lawrenceville, GA
Joe D
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Charlie,
I should have said that as far as the engine goes, when I asked him (previous owner) about the cam he said everything with the engine rebuild was stock.

I learned through this site and while trying to find a kit for the Carter WCFB's that lesson because he said the dual quads were off of a 57 T-Bird.
Well, they might have been taken off a 57 T-Bird but certainly were not stock OEM. I wish they were since I could have them calibrated to spec.

Thanks again,

Joe D (The Frig)

Joe D (The Frig)
1960 F-100 - 292 Y-Block
Philly Burbs


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