ol'skool Posted March 2, 2014 Report Share Posted March 2, 2014 Has anyone done a dual carb set up with the fluid drive. The 1950 Dodge has the correct Stromberg on it now and we are thinking about going with a hotter set up on this 218. Has it been, is there another forum that goes over this, how did it work. The thought was to keep the original carb and find another matching. The 2nd carb would be fully functional but wouldn't have anything to do with the fluid drive set up, only the first carb would. That's that thought, is that correct? Any input is great appreciated. Quote Link to comment Share on other sites More sharing options...
P15-D24 Posted March 2, 2014 Report Share Posted March 2, 2014 Only issue is the dashpot used to slow the throttle closing. This keeps the engine from stalling when the throttle closes rapidly from the drag created by the fluid drive. Quote Link to comment Share on other sites More sharing options...
Frank Elder Posted March 2, 2014 Report Share Posted March 2, 2014 230 has fluid drive dodgewise, 218 is a plymouth motor and doesn't come with fluid drive..... Quote Link to comment Share on other sites More sharing options...
meadowbrook Posted March 2, 2014 Report Share Posted March 2, 2014 Through this forum, I have learned that I must have the wrong carb in my '50 Meadowbrook. Mine is a Carter BB. And I see no dashpot anywhere. However, I have experienced no stall whatsoever in normal driving. The only time it may stall is if I stab the throttle and lift while sitting in gear, which is certainly not a normal driving maneuver. (I have a manual trans and fluid drive) Otherwise it runs perfectly. My point is, maybe the dashpot isn't essential, at least in a stock, 1 carb application. On the other hand I suppose one could, if needed, set up a dashpot on the linkage, controlling both carbs in a dual carb setup. Quote Link to comment Share on other sites More sharing options...
Lumpy Posted March 2, 2014 Report Share Posted March 2, 2014 (edited) I don't think the dash-pot thing will be an issue....don't believe you will need them. Here's the advice I like to give concerning dual carbs...some will disagree. When running two carbs, use carbs that are smaller than the stock carb. Sometimes doubling the CFM gives the engine too much carb, and that can cause tuning and driveability issues. But having said that, I know lots of people have gone to two stock carbs on the flathead sixes and they have worked well. However, a smaller carb will always meter fuel better, and two small carbs will still be much more CFM than one stock carb. I tend to think sometimes, that when people run too much carburation, by the time they get the carbs tuned in, they don't realize that the thing is running more doggy than with the single carb. ?? Any engine will run better with too little carb, in comparison to too much carb. Too much carb will only "turn on" at high rpm, and will be doggie at normal driving rpm's, and will usually tend to bog unless it has a lot of pump-shot, and then gas mileage goes down. Again, too much carb will only really "turn on", or get with the program, about the time you are ready to shift into the next higher gear. Small carb gets with the program right off the line, and really turns on nice at mid-range. The worst thing that happens with too small of a carb is that it will act as a governor (sp?) at high rpm. And again, two smaller carbs, will still have more cfm than the single stock carb. (unless you used something off a Briggs and Stratton!!!) But again and again, two small carbs can/usually equal more cfm than the single stock carb, so you kind of get the best of both worlds. There are lots of single barrel carbs out there that are a little less cfm than the Stromberg. I have super good luck running two B&B's that came off of 198 slant sixes. Power went up, gas mileage went up, and wow-appeal went up. I only had to lean them out a bit, and put the accelerator pumps on the lowest settings. Again, I think dash-pots are over-rated. I wouldn't give them a second/another thought. Non-issue. ken. Edited March 2, 2014 by Lumpy 1 Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted March 2, 2014 Report Share Posted March 2, 2014 The only time it may stall is if I stab the throttle and lift while sitting in gear, That is exactly what a dash pot will prevent. I think that is a very normal driving maneuver if you are in stop and go traffic. I think the mopar engineers knew what they were doing when they incorporated a dash pot on a fluid drive equipped car. Quote Link to comment Share on other sites More sharing options...
ol'skool Posted March 2, 2014 Author Report Share Posted March 2, 2014 Ok, let's get back on topic. I'm interested in feedback related to dual carbs with a fluid drive. Has anyone done it and what has it produced. What are the downfalls, problems, etc.... Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted March 2, 2014 Report Share Posted March 2, 2014 When did this thread go off topic? Quote Link to comment Share on other sites More sharing options...
ol'skool Posted March 2, 2014 Author Report Share Posted March 2, 2014 Sorry, maybe I wasn't clear in my question in the first post. I understand going to dual carbs. Been there, done that with other engines. Going to a dual carb set up with the fluid drive trans isn't as easy as most cars due to the fact the single carb controls the fluid drive. My thoughts are to find another fluid drive carb and use that. Only the throttle and choke will be connected. I understand about CFM and jetting and I can deal with that. I can also get real creative and go to a set of switches that would do the same thing and do away with the carb on there now and search for 2 Carter B&B and use them. The system is really nothing more that a few switches telling the solenoid on the transmission what to do. That can be done another way if necessary. Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted March 2, 2014 Report Share Posted March 2, 2014 Good luck Quote Link to comment Share on other sites More sharing options...
DonaldSmith Posted March 2, 2014 Report Share Posted March 2, 2014 The carb for the semi-automatic transmission has a contact to force a downshift when the accelerator pedal is fully pushed. Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted March 2, 2014 Report Share Posted March 2, 2014 If your car has the M-6 gyromatic I'd just use one stock carb that has the electrical KD and antistall components and match another carb to it W/O the controls thats jetted to match. Thats what I did on my car. Quote Link to comment Share on other sites More sharing options...
ol'skool Posted March 2, 2014 Author Report Share Posted March 2, 2014 (edited) Yes Don, that is exactly what I'm after. I wanted to know if it's been done and what's involved and what to expect. Thank you. I was at my shop today and took a look at it. It says gyro matic on an emblem. I wasn't sure on engine size and my thoughts were a 230 but customer thought it was a 218. Not worried about the size right now. It is a stromberg 2bbl carb on there now, not even sure if that's stock to the car, I thought they used single bbl carbs, haven't gotten that far yet. What's that from. I can get the numbers one day this week off the carb to figure put for sure. That may also be contributing to why the car boggs down when accelerator is pushed. It does this while sitting in neutral. All the plugs were fowled but it still ran and idled good. I think to inch fool is being dumped in. I'll worry about that later also. That's another thread if I can't figure it out. Thanks dodgeb4ya for that info. That is what I'm thinking about doing. Edited March 2, 2014 by ol'skool Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted March 2, 2014 Report Share Posted March 2, 2014 I'm now confused... how did someone put a 2BBL on a 50 dodge unless it's a factory 55/56 230 Dodge engine in a 50 dodge? If it is a factory 2BBL engine I'd keep that and skip the twin carbs idea..I'd do a compression test and if good get it running good-keep it the way it is @ 131HP. Bob Quote Link to comment Share on other sites More sharing options...
ol'skool Posted March 2, 2014 Author Report Share Posted March 2, 2014 There is a really nice adapter between the carb and intake. It's a single bbl intake. I think there is a single bbl carb in a box. I haven't gotten a really good look at what misc items are in boxes. I'll have to check it out. I'll post pictures later this week of the engine. Quote Link to comment Share on other sites More sharing options...
Lumpy Posted March 2, 2014 Report Share Posted March 2, 2014 I'm lost...didn't know there was a M6 involved. !!!! ken. Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted March 3, 2014 Report Share Posted March 3, 2014 I am also confused. Is this your car or is it your repair shop and a customers car? Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted March 3, 2014 Report Share Posted March 3, 2014 I'm out! Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted March 3, 2014 Report Share Posted March 3, 2014 ditto 1 Quote Link to comment Share on other sites More sharing options...
ol'skool Posted March 3, 2014 Author Report Share Posted March 3, 2014 (edited) Really, that it? Oh well. Here are some pictures, maybe it will help. Edited March 3, 2014 by ol'skool Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted March 3, 2014 Report Share Posted March 3, 2014 Well it is a 1950 dodge with a M6 transmission for sure. Thats a 1953-54 Dodge 241 Hemi Stromberg 2BBL used for the M6 transmission mounted on an after market adapter. All I can say is wow! Quote Link to comment Share on other sites More sharing options...
ol'skool Posted March 3, 2014 Author Report Share Posted March 3, 2014 I wondered if it was from a V8 or another 6 cylinder from a "newer" car. Well, that solves that. I think it's too much carb for the engine. Too much fuel being dumped in it. It bogs down from an idle when you press the pedal, neutral or starting in drive then comes out of it and goes great. I think a dual set up is doable using 2 original 1 barrel carbs. Now to locate 2 carbs. Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted March 3, 2014 Report Share Posted March 3, 2014 let the thing breath a bit better by removing that restrictive air cleaner and see if it makes any difference.. Quote Link to comment Share on other sites More sharing options...
_shel_ny Posted March 3, 2014 Report Share Posted March 3, 2014 (edited) Is the accelerator pump functioning properly? Edited March 3, 2014 by shel_ny Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted March 3, 2014 Report Share Posted March 3, 2014 let the thing breath a bit better by removing that restrictive air cleaner and see if it makes any difference.. I was thinking the same thing. That air filter is quite small. Let 'er breath!! Quote Link to comment Share on other sites More sharing options...
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