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Rough running issues on a 318 2 bbl
#1160129
01/18/12 10:14 AM
01/18/12 10:14 AM
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Joined: Jun 2008
Posts: 86
Ontario
Mopar Boy
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Been working on getting the 318 in the 68 Newport tuned up. Having issues with it running. Unless you baby the throttle the motor dies. If you also give it more than 60%, it bogs.
I have changes the cap, rotor, plugs, wires, and set the timing at 8 deg, new air filter and a bunch of other items that are not really related.
Question is, where do I go from here? I seem to have good spark, so I would assume fuel. Also, as the carb was apparently rebuilt this past summer prior to my owning it, I wonder if the internals are screwed.
Thoughts?
Thanks,
Robert
1969 Chrysler 300 440/727
1980 W350 Crew Cab Dually with 1997 12V Cummins & many, many goodies
1990 W250 Cummins NV5600
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Re: Rough running issues on a 318 2 bbl
[Re: Mopar Boy]
#1160130
01/18/12 10:33 AM
01/18/12 10:33 AM
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Joined: Jan 2003
Posts: 8,668
Buford, GA
I_bleed_MOPAR
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master
Joined: Jan 2003
Posts: 8,668
Buford, GA
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Quote:
Been working on getting the 318 in the 68 Newport tuned up. Having issues with it running. Unless you baby the throttle the motor dies. If you also give it more than 60%, it bogs.
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From your description it sounds like the accelerator pump has dried out or incorrectly adjusted.
Tim
'71 Charger 383/727 '17 Challenger SXT (Wifeys car  )
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Re: Rough running issues on a 318 2 bbl
[Re: I_bleed_MOPAR]
#1160131
01/18/12 10:40 AM
01/18/12 10:40 AM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
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Florida
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Quote:
Quote:
Been working on getting the 318 in the 68 Newport tuned up. Having issues with it running. Unless you baby the throttle the motor dies. If you also give it more than 60%, it bogs.
...
From your description it sounds like the accelerator pump has dried out or incorrectly adjusted.
Tim
BBD 2-v carbs are that way.
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Re: Rough running issues on a 318 2 bbl
[Re: Mopar Boy]
#1160133
01/18/12 10:48 AM
01/18/12 10:48 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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As said carb & need more than 8 deg initial. check A/P then float level & shoot a 2 second blast of starting fluid in each idle mixture screw hole, vac leak
live every 24 hour block of time like it's your last day on earth
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Re: Rough running issues on a 318 2 bbl
[Re: RapidRobert]
#1160134
01/19/12 08:51 PM
01/19/12 08:51 PM
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Joined: Jun 2008
Posts: 86
Ontario
Mopar Boy
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Thanks for the advice guys! Says what I hoped was not true! LOL
1969 Chrysler 300 440/727
1980 W350 Crew Cab Dually with 1997 12V Cummins & many, many goodies
1990 W250 Cummins NV5600
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Re: Rough running issues on a 318 2 bbl
[Re: Mopar Boy]
#1160135
01/19/12 08:58 PM
01/19/12 08:58 PM
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Joined: Jan 2008
Posts: 3,886
Lost and Spaced
bboogieart
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master
Joined: Jan 2008
Posts: 3,886
Lost and Spaced
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I was just curious why some one would put a 318 in a 68 NewPort?
Seems like a lot of work to go to a small block in a car that never had one. Or was it a 383? Either way those carter 2bbl bbd carbs are a breeze to rebuild.
I have mechanical Aptitude.
I can screw up anything.
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Re: Rough running issues on a 318 2 bbl
[Re: 268RTs4ME]
#1160136
01/19/12 11:03 PM
01/19/12 11:03 PM
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Joined: Jul 2011
Posts: 817
Eugene, Oregon
Secret Chimp
super stock
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super stock
Joined: Jul 2011
Posts: 817
Eugene, Oregon
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Quote:
Time to take the carb off and rebuild it, also make sure you put in a new float. The caskets and new pump should be in the kit.
There's no need to put in a new float unless the one in there is shown to have a leak. The float in mine was perfectly fine, and it was rebuilt (poorly) at least once before with the float level set all wrong.
1967 Dodge Coronet Deluxe station wagon
1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s
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Re: Rough running issues on a 318 2 bbl
[Re: scratchnfotraction]
#1160138
01/20/12 07:51 AM
01/20/12 07:51 AM
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Joined: Jan 2003
Posts: 27,728
places
79powerwagon
Too Many Posts
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Too Many Posts
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Posts: 27,728
places
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Quote:
Quote:
Quote:
Been working on getting the 318 in the 68 Newport tuned up. Having issues with it running. Unless you baby the throttle the motor dies. If you also give it more than 60%, it bogs.
...
From your description it sounds like the accelerator pump has dried out or incorrectly adjusted.
Tim
BBD 2-v carbs are that way.
I HATE BBD carbs. Of all of them that I've had over the decades, only ONE of them worked properly, and no amount of rebuilding will correct anything on them!
There was someone, this past summer, selling brand new ones. You'd be way ahead doing this, and even further ahead if you found a 2v Stromberg instead. Of course, 4v is the real ticket, but if you insist on 2v, the Stromberg is a better Mopar carb.
To the poster stating no small blocks in C bodies- you sir, are wrong. Maybe not originally in THAT particular model and year, but there are PLENTY of small block and /6 C bodies made!
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Re: Rough running issues on a 318 2 bbl
[Re: 79powerwagon]
#1160139
01/20/12 12:36 PM
01/20/12 12:36 PM
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Joined: Jun 2008
Posts: 86
Ontario
Mopar Boy
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No, it is a 318/904. It was a 383/727 though. Why change it to a small block? Beyond my comprehention as to why they would go through the hassle! Not to mention the casting date says 1985!? It did allow me to get a decent deal on it though!  Either way, I want to stay 2 barrel for the time being as the motor wont be in there for more than a year. Just have to save up some more funds and then it will go under the knife after the parts have been collected. If I go to a 4 barrel, then I need to get intake pan, manifold, etc. For where I am going, makes more sense to just get it driveable for the least amount. I have also gone down this new carb road. Makes the most sense. Where would I buy a new one and how much CFM do I need for a stock 318? I was looking on Summit and found these. Would either work? Or is there a better one I should consider? http://www.summitracing.com/parts/HLY-64-1183/http://www.summitracing.com/parts/HLY-64-1169/Thanks,
Last edited by Mopar Boy; 01/20/12 12:37 PM.
1969 Chrysler 300 440/727
1980 W350 Crew Cab Dually with 1997 12V Cummins & many, many goodies
1990 W250 Cummins NV5600
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Re: Rough running issues on a 318 2 bbl
[Re: Mopar Boy]
#1160141
01/20/12 12:52 PM
01/20/12 12:52 PM
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Joined: Apr 2007
Posts: 2,918
Calgary, Alberta Canada
a12rag
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Posts: 2,918
Calgary, Alberta Canada
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For the price of a kit, the BBD is one of the easiest carbs to rebuild ! Think you would be money ahead doing that, over buying another one that may or may not be any better than the one you have.
I have always found, especially with stock motors, that if you rebuild it according to the factory instructions (or those included with the kit), you usually end up with something very very close to perfect for your application.
Have done that with Thermoquads over the years too . . . always had em work great !! With a bit of time, and reading (go figure - read the instructions !!), you should be able to get the carb you have on the car now, running like a top !!
Why take a big block drivetrain out of a C body and replace it with a small block drivetrain ? Come on, you get the big block for another project, and still have a running/driving C body ! . . . bought a 69 Chrysler 300 like that . . . it did get the 440 later on though !!
Hope it works out for you . . .
Cheers
Mark
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Re: Rough running issues on a 318 2 bbl
[Re: Dean_Kuzluzski]
#1160143
01/20/12 03:26 PM
01/20/12 03:26 PM
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Joined: Jul 2011
Posts: 817
Eugene, Oregon
Secret Chimp
super stock
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super stock
Joined: Jul 2011
Posts: 817
Eugene, Oregon
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If you're still scratching your head over this, you can have the BBD off of my Coronet when I'm done with my four barrel swap in a couple of weeks. It's a non-emissions carb so it has none of the junk that made them pains in the butt. Always works perfectly for me.
1967 Dodge Coronet Deluxe station wagon
1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s
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Re: Rough running issues on a 318 2 bbl
[Re: dOrk !]
#1160146
02/03/12 10:30 AM
02/03/12 10:30 AM
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Joined: Jun 2008
Posts: 86
Ontario
Mopar Boy
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OK. I have battled over the last few weeks what I want to do. I ended up deciding to just wait and collect some funds, and do it right. Put on a 4 barrel and call it a day. If I am going to do it, may as well do it right.
Thanks for all of the input folks. Again, you have all kept me on the right course!
1969 Chrysler 300 440/727
1980 W350 Crew Cab Dually with 1997 12V Cummins & many, many goodies
1990 W250 Cummins NV5600
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Re: Rough running issues on a 318 2 bbl
[Re: Mopar Boy]
#1160148
02/03/12 11:59 AM
02/03/12 11:59 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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dont forget to bump that initial up!
live every 24 hour block of time like it's your last day on earth
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