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Generation 6 1973-1979 F100, F150, F250, F350

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  #1  
Old 07-20-2018, 02:41 PM
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Recommendations For Rebuilt 2150 Carburetor

Can some recommend a reputable source for a rebuilt 2150 carburetor(351M/400) 1978? I had the carb rebuilt several years ago, and the builder said I was leaking air around the throttle shaft. He polished the shaft and said if there were further issues, then the carb would need to be replaced. Any suggestions?
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'78 F-150 Lariat

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Old 07-20-2018, 03:50 PM
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Time for an upgrade... the 2150 is one of the sorriest carburetors ever to leave Ford
I think reman units are still pretty easily available though
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Last edited by SuperCab; 07-20-2018 at 03:54 PM.
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Old 07-20-2018, 04:58 PM
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Suggestions? 4 barrel intake with 570/600 cfm avenger carb? Lots of rebuilts for the 302, but not many available for the 351M/400.
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'78 F-150 Lariat

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Originally Posted by john112deere
I think the lens of time is required to differentiate between the real milestones, and the detours along the way.
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Strippers, ammo and SKS, wow, that is almost sig worthy!!
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Old 07-20-2018, 05:21 PM
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I personally would yank the intake,put a aluminum 4bbl intake, and a holley EFI unit. Especially SINCE YOUR GOING TO KEEP IT WELL PAST THE DAY YOU DIE.
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Old 07-20-2018, 08:15 PM
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Point taken.
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'78 F-150 Lariat

Quote:
Originally Posted by john112deere
I think the lens of time is required to differentiate between the real milestones, and the detours along the way.
Quote:
Originally Posted by mrxlh View Post
Strippers, ammo and SKS, wow, that is almost sig worthy!!
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Old 08-02-2018, 02:55 PM
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Kinda late to the party here, but the rebuilt carb that came on the 400 in my '79 F150 has mostly been a headache. I think the guy that I got the truck from said the carb came from O'reilly's so don't get one there. An old mechanic that's pretty sharp said it was setup more for a 302. Still trying to chase down the right main jet to put in it.

The Holley EFI is on my to do list someday when the budget allows.
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Old 08-02-2018, 03:56 PM
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Thank you. I don't know if you are saying you don't know which jet to put in the carb, or you know what size jet and can't find it. If the latter, here is a link for various jets for a 2150 carburetor at about $6.00 each.
http://www.carburetor-parts.com/Auto...Jet_p_175.html

If you don't know what size jet to use, I can gladly pull the jets off of my old carburetor(original to '78 F150 49 state with a motorcraft 2150) and let you know what those numbers are for a starting reference point.
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'78 F-150 Lariat

Quote:
Originally Posted by john112deere
I think the lens of time is required to differentiate between the real milestones, and the detours along the way.
Quote:
Originally Posted by mrxlh View Post
Strippers, ammo and SKS, wow, that is almost sig worthy!!
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  #8  
Old 08-02-2018, 04:14 PM
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Changing jets is an old school lost science

I had a buddy that used to have a whole box of jets. He'd spend a whole day changing them.
Carb was flawless when he was done.
Just like EFI does now. LOL
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Old 08-03-2018, 12:29 PM
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Originally Posted by fatherdoug View Post
Thank you. I don't know if you are saying you don't know which jet to put in the carb, or you know what size jet and can't find it. If the latter, here is a link for various jets for a 2150 carburetor at about $6.00 each.
http://www.carburetor-parts.com/Auto...Jet_p_175.html

If you don't know what size jet to use, I can gladly pull the jets off of my old carburetor(original to '78 F150 49 state with a motorcraft 2150) and let you know what those numbers are for a starting reference point.
Thanks for the link! I'm honestly not sure what's in there now since I wasn't the one working on it. The guy said he didn't have the jet size I needed at the time, but put in as close to what was needed out of what he had in his little shop. He thought it needs to be in the 57-58 range. I know it's not getting quite enough fuel from 3/4 to full throttle and falls on it's face a little bit so a larger main is in order. Also has a stumble from the AP circuit if you stab the throttle wide open from low RPM. Guessing it's delivering a bit too much fuel there based on how it acts.

If you don't mind I'd be interested to see what the factory jets are supposed to be. Not sure what makes a truck 49 state legal, but mine has the ported gas tanks, emission system (mostly disconnected), and evidently came from the CA factory since it has the green paint stamp on the firewall.

I'm pretty good at tuning dirt bike, ATV, and snowmobile carbs. I've just never gotten into automotive carbs until now so I don't have the background yet on how the carb is laid out and which circuits are where.
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  #10  
Old 08-03-2018, 02:41 PM
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I pulled the jets on my 2150 and they have size 57 jets. Hope that helps. Manufactured in California doesn't necessarily mean California required emissions. My truck was also manufactured in California ("R" code in VIN for San Diego), but was sold in Salt Lake City(DSO code 73). Therefore, California emissions did not apply.
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'78 F-150 Lariat

Quote:
Originally Posted by john112deere
I think the lens of time is required to differentiate between the real milestones, and the detours along the way.
Quote:
Originally Posted by mrxlh View Post
Strippers, ammo and SKS, wow, that is almost sig worthy!!

Last edited by fatherdoug; 08-03-2018 at 02:46 PM.
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