Help! Motorcraft 4350 Carb tech question
Cargo Master
Joined: Apr 2001
Posts: 2,364
Likes: 3
From: Eustis FL
Help! Motorcraft 4350 Carb tech question
This is for those carb gurus! (and those with the spec books!)
I need the clearance measurement for the metering rod adjustment.
It is the clearance between the hanger and top of vaccuum cylinder.
None of my books seem to have it.
Mark
Ford started it; Ford will finish it!
I need the clearance measurement for the metering rod adjustment.
It is the clearance between the hanger and top of vaccuum cylinder.
None of my books seem to have it.
Mark
Ford started it; Ford will finish it!
Cargo Master
Joined: Apr 2001
Posts: 2,364
Likes: 3
From: Eustis FL
Help! Motorcraft 4350 Carb tech question
>Is this for vacuum operated secondaries?
Gee, I don't know...I think so. I have never done a carb rebuild on a 4 bbl before; thought I would give it a shot. Pretty simple to do, it seems, but now I have a spec missing. All other info is with the kit, but not this clearance... All I know is that it is different from the 4300, to which I have books on... The 4300 doesn't have the metering rods over the jets like this 4350 does...
Mark
Ford started it; Ford will finish it!
Gee, I don't know...I think so. I have never done a carb rebuild on a 4 bbl before; thought I would give it a shot. Pretty simple to do, it seems, but now I have a spec missing. All other info is with the kit, but not this clearance... All I know is that it is different from the 4300, to which I have books on... The 4300 doesn't have the metering rods over the jets like this 4350 does...
Mark
Ford started it; Ford will finish it!
Postmaster
Joined: Aug 2000
Posts: 3,312
Likes: 1
From: Eldorado Ca. USA
Help! Motorcraft 4350 Carb tech question
Your'e gunna make me get up and go get the shop manuals out aren't you!! AGH!!! 
Tony
'77 F250, 460 transplantee, "Flamer"
'74 F250. 460, "beater" now "1 dead ford"
'73 F250, "midnight auto" now a trailer for the flamer
Tony
'77 F250, 460 transplantee, "Flamer"
'74 F250. 460, "beater" now "1 dead ford"
'73 F250, "midnight auto" now a trailer for the flamer
Senior User
Joined: Apr 2002
Posts: 406
Likes: 1
From: cedar rapids usa
Help! Motorcraft 4350 Carb tech question
hold vac.piston in the down position and back out metering rod screws and vac.piston screw until met.rod. hanger is fully seated on vac.piston hanger.Turn each metering rod screw in until hanger
just begins to rise from cyl.-Turn in vac.piston screw until .120"(approx.1/8") clearance is obtained between hanger & top of vac.cylinder. This is a starting point,and you may have to go
back and forth until eng. and carb are carrying a tune. Use a vacuum gage to get the highest vacuum at idel rpm's
Hope this works for ya.
just begins to rise from cyl.-Turn in vac.piston screw until .120"(approx.1/8") clearance is obtained between hanger & top of vac.cylinder. This is a starting point,and you may have to go
back and forth until eng. and carb are carrying a tune. Use a vacuum gage to get the highest vacuum at idel rpm's
Hope this works for ya.
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Cargo Master
Joined: Apr 2001
Posts: 2,364
Likes: 3
From: Eustis FL
Help! Motorcraft 4350 Carb tech question
Believe it or not, I got almost word-for-word what you have there, except for the .120 clearance. Thanks a bunch! The carb wasn't working worth beans, and the metering rods were about 3 turns apart from each other... Not sure if someone was messing with it before or not...
Thanks again! Now I can reassemble!
Mark
Ford started it; Ford will finish it!
Thanks again! Now I can reassemble!
Mark
Ford started it; Ford will finish it!
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