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Old 09-12-2018, 12:24 PM   #1
Lyn Smith
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Default WCFB carb problem. Oil pressure ?

Got a 1956 Carter WCFB on my 55 265 Q/SA.The problem is that coming out of the water as soon as you let off of the throttle the car wants to die.You have to stick it in neutral real quick, and bring up the rpms to keep it from dying.It also will also try to quit running when you pull into your pit space,and let off of the throttle.Going testing tonight and I have a fuel pressure gauge on the car now.Will keep a eye on the pressure.Also the oil pump that came with the pan I used has 80 lbs of pressure at 6500 rpms.That seems high to me.
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Old 09-12-2018, 01:11 PM   #2
Chad Fergen
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Default Re: WCFB carb problem. Oil pressure ?

Is there any black smoke when you try to keep it running? If so, something little in the needle and seat? It doesn't take much.
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Old 09-12-2018, 01:14 PM   #3
Lyn Smith
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Default Re: WCFB carb problem. Oil pressure ?

No black smoke.Seems more like it is running out of fuel.
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Old 09-12-2018, 01:21 PM   #4
Chad Fergen
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Default Re: WCFB carb problem. Oil pressure ?

Does it run down the track fine?
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Old 09-12-2018, 01:27 PM   #5
Lyn Smith
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Default Re: WCFB carb problem. Oil pressure ?

Yes runs fine at WOT.
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Old 09-12-2018, 01:57 PM   #6
Randall Klein
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Default Re: WCFB carb problem. Oil pressure ?

May be helpful, maybe not (Grumpy said that to me once!), although we run dual WCFBs, we finally wound up at 14.5 lbs fuel pressure, cured a problem like yours and dying at launch FWIW
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Old 09-12-2018, 03:02 PM   #7
Painter
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Default Re: WCFB carb problem. Oil pressure ?

When we ran one of those on our 55 ss car we ran 15-18 pounds of fuel pressure.
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Old 09-12-2018, 03:29 PM   #8
Lyn Smith
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Default Re: WCFB carb problem. Oil pressure ?

For sure going to bump up f pressure.Only has 6.5 now.Had another racer tell me if I want to richen the wcfb up ,just bump up the fuel pressure.Will keep you all informed.Thanks for all the info.Lyn
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Old 09-12-2018, 03:56 PM   #9
FED 387
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Default Re: WCFB carb problem. Oil pressure ?

U might also want to check float level and make sure that the float is centered in the float bowl not touching the sides of the bowl at all. They were known to do that as well
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Old 09-12-2018, 07:24 PM   #10
Jim Johnston/6022
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Default Re: WCFB carb problem. Oil pressure ?

Have messed with those old carbs forever. We have run both single and dual in s/s so it is way different- but some things to look at is of course float level and binding,also check floats in hot water for leaks. One of the things carb kits show is to check vacuum passage thru body, fuel will slobber on turns or stops. we have always plugged with a piece of wire. We only run 5 1/2 lbs. for fuel pressure.

Randall-looks like we should try 15 lbs.
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