Eyeball my carb...

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Joined
Jan 6, 2013
Messages
399
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7
Location
Birmingham, AL
My Car
71 Mach 1. Originally 2V but going 4V soon!
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Blows fuel out the top overflow. Replaced the float and the little brass valve and fitting. Dang looking at that pic there still some junk in there. I didn't have to adjust the float to 7/16 it was right on that out of the box.

Seriously that little float and the little brass pin hold all the fuel back coming from the fuel pump.

And on a side not that square thing on the second pic, the one with the lever. It's got a slow leak and that top left screw will not budge. Short of cutting it out and tapping any suggestions.

This carb problem gets one more shot. It aint got to be perfect just back her in and out of the garage. My only other alternative is go 4V and use that Holley 750. That's heads, manifold... you know the drill.

Thanks in advance.

 
Cole

If you want to go 4 barrel, you only need an intake. I even have an old 4 barrel intake for 2 barrel heads that is aluminum, but has all manufacturing marks ground and polished off. It is a dual plane and I'd bet it is an edelbrock.

I'd be happy to give it to you as I didn't realize it was for 2 barrel heads when I got it.

That square thing is your accelerator pump-if it isn't working, nothing else is going to compensate.

 
Wow what a generous offer Jeff. Just feel if I have to take the manifold off I'm going 4v and not looking back. Have all the parts cept bolts and gaskets. Assuming I can reuse my 2v rocker arms.

I just dont get how that little pin thing holds back all that fuel.

Got a tip from a friend to take it apart and blow air and see if it seats. Try that tonight. Again thanks for the most generous offer.

 
With all that rust in the bowl, you ought to consider replacing the tank and or lines...

Edit: I see the fuel filter. I'd replace it.

But if you're thinking of going 4v...
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Thanks totalled. New tank and new lines already in. New pump and new filter. I took it off last night and going to do some work on the bench with it. But yea man 4v is looking better!

 
Motorcraft 2150. Everybody loves them because of their integral fuel bowl. I've had three of them - two of which have been utter nightmares.

Short of Jeff's very nice offer, you can always put a Holley 2300 in its place.

-Kurt

 
Every freaking cuss word in the books! Readjusted the float and replace the thing in the accelerator pump (square do hicky) and it still pumps gas out the overflow. Took the carb top off and bent the tab on the float so only a about a half inch in the bowl would tap the needle into the seat. Still happens, gas pours everywhere. Friend suggested drain the bowl and blow air into the gas line and barely tap the pin and see if it shut the air off. Sure enough the slightest pressure on the pin and I cant blow any air through. I ain't screwing with this thing anymore. It's a real biotch to come along that car back into the garage, then all the gas fumes.

Tempted to hit Jeff up in a PM or just go 4v. I looked into gaskets for the 4v setup today and as usual my boot camp set in. Really you need to specify the thickness of the head gasket. Will I need pushrods and rocker arms? New head bolt set? Can you order those as a set?

Really really discouraged. May work on refinishing my console for a few days.

 
Send me your mailing address- I am trying to move some stuff out of my way to make room for my motor build.

Head gasket thickness is specified for clearance with High compression custom builds or odd lift cams. Standard basic Felpro gaskets are fine for a head swap on a stock bottom end.

I may have a solid lifter cam available if it isn't damaged. It would be a bargain, (but not free) if you need it

 
Cole,

Looks like you have a EGR plate underneath your carburetor. Might want to keep it for prosperity or originality in the future. Definitely need to place it in the museum.

mustang7173

 
Sorry, buddy, but I had to grin as I read your post. Working on these old cars teaches us patience and the importance of a well-stocked fridge. :) And I thought skinned knuckles would be the greatest of my problems... :p

While you're waiting for the stuff from Jeff and looking up old forum threads related to replacing your intake and carb and such, it'll give you time to tinker with the console. Don't be discouraged - it's things like this that build character, right? :mad:

Just think of all the power you'll have once you've got that 4V intake and 750 on top of it. You'll have to buy an extra piggy bank just to save enough money for rear tires! :banana:

 
Thanks Doc. And everyone else too. Gonna go the 750 with the 4 barrel manifold and 2v heads. Setting up a meeting with Jeff who is ever so kind. Is that BBQ I'm smelling. :)

 
Cole

If you want to go 4 barrel, you only need an intake. I even have an old 4 barrel intake for 2 barrel heads that is aluminum, but has all manufacturing marks ground and polished off. It is a dual plane and I'd bet it is an edelbrock.

I'd be happy to give it to you as I didn't realize it was for 2 barrel heads when I got it.

Tempted to hit Jeff up in a PM or just go 4v. I looked into gaskets for the 4v setup today and as usual my boot camp set in. Really you need to specify the thickness of the head gasket. Will I need pushrods and rocker arms? New head bolt set? Can you order those as a set?

Really really discouraged. May work on refinishing my console for a few days.
Why are you talking about swapping heads? The intake Jeff is offering is for your stock 2v heads. Al you have to do is swap intakes, nothing else. You don't even have to pull your valve covers...

Let me go dig in the shop tonight, I'm sure I have a 2V intake manifold set somewhere I'll send you.

PS, a 600 cfm 4 barrel will likely work better on that setup.

 
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All,

I believe the Holley 750 is way too much for the 351C 2v engine. Question, is the original engine with the original 2 v cam profile. Here is the Holley Configuration recommendation:

351C 2V -5500 RPM -N0 Modifications

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351C 4V - 5000 RPM Slightly Modification

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It recommends the 600 CFM Carb. It might be good to go to the 650 at the most.

Holley Website Configuration

https://www.holley.com/applications/CarburetorSelector/CarbSelection.asp

Thank You,

mustang7173 :)

 
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The offers and generosity of this group never ceases to amaze me. I took a little time this morning to pull my intake manifold off while promptly throwing that 2 barrel in the scrap pile.

Glad that carb didn't work.

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Think thats #5 or #6

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I dropped a brick in my pants when I saw it missing.

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1 thru 4 have a lot of these clips broke. That freaks me out. What the heck.

I guess the best route would be to pull the heads?

 
Cole, I would pull the heads.

What do you want the car to be when you're finished? A daily driver, or a weekend burnout king, or a show car during the summer, etc.? What exactly do you want her to do when you're "finished" (although that really never happens, now does it? :p )

With your answers, we could suggest certain directions to take, like pulling the motor and doing the whole thing the right way, or just replacing the rods and such and cleaning up the heads, or replacing the cam, or whatever. I agree with the previous poster that the 750 is way too much carb for a stock 2V cam, so you may consider going with a bigger cam or a smaller carb.

Let us know what you're looking for, and we can provide some suggestions. I think you have the same motor that I started with.

 
Not looking for a daily driver but would like to be able to just say one morning drive the stang to work. That's some low rpm driving. Would like a car that could hold its own on the road. Hate it when rice burners jump off at a light. Burn some tires. She won't be a perfect restore where everything as it was from the factory.

I'm thinking order new gaskets, rods and rocker arms and go the 4v route. really don't want to break the whole thing down if I can help it. Not right now ya know.

New Autozone fuel pump. Mechanical. Looked almost exactly like the old one.


Oh and to maybe clear things up, I already have 4v heads, the intake manifold, holley 750 DP and headers.

Thanks again everyone.

 
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