Author Topic: slant 6 carb  (Read 555 times)

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Offline crazzywolfie

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slant 6 carb
« on: May 23, 2020, 05:29:14 pm »
hoping you guys may be able to help me with a slant 6 carb. 71 dodge dart 198 engine. i believe it is a carter bbs C.A.P. according to the instructions. we seem to have it running a bit better than it was when be dropped off but it according to the exhaust you can tell it is running rich at idle. how do you adjust these carbs? we haven't put a carb kit in it yet since haven't been able to get one from the parts store but have popped it open and cleaned things out a bit. was a bit of debris in the float bowl but nothing too bad. i would guess the fuel is at least 90% fresh since we siphoned out as much as possible before dumping in about 6 gallons of fuel fresh straight from the gas station into the tank. i am really not too sure what to look at next. other than that it actually doesn't seem too bad. once it starts moving it the black smoke clears up and it seems to move pretty good. only black smokes when idling. any info would be appreciated. thanks

this is all i got to work with as far as info goes
https://www.rockauto.com/genImages/154/GF3494-8.pdf
« Last Edit: May 23, 2020, 05:32:22 pm by crazzywolfie »
93 RamCharger 2wd 318
89 RamCharger 4x4 318/727/3.21 on 33's
81 d150 long box 318 670CFM Holley Carb
If you can't fix it with a hammer, you've got an electrical problem

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    Offline dodge82273

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    Re: slant 6 carb
    « Reply #1 on: May 24, 2020, 12:04:52 am »
    36 and 37 adjusts , BUT where is 37 on yours ? some of those were non adjustable . I suggest a different carb . you may have a California one on there ............. 
    78 to 93 parts trucks
    91 w250 318 518 44/60 single 9 foot driveway plow locked
    87w150 44/corp727 kandy w/ ghost bats/summer
    86-D/W100 44/corp/318mag/carb/4500/aka shit box/winter
    93w150short/44/corp/360/le/mag "caddie"
    93w250LB51844/60posi 318"New Truck"
    93w350 6 tire CC 60 c/a flat bed dump

    Offline crazzywolfie

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    Re: slant 6 carb
    « Reply #2 on: May 24, 2020, 12:55:40 am »
    there is no 37 on this carb. special note number 1 "idle mixture screws(37) are not removable on C.A.P. carburators"

    i made sure number 36 was clear. we are hoping to try and get this carb to work but would definitely consider replacing it if we had to.
    93 RamCharger 2wd 318
    89 RamCharger 4x4 318/727/3.21 on 33's
    81 d150 long box 318 670CFM Holley Carb
    If you can't fix it with a hammer, you've got an electrical problem

    Offline DODGEBOYS

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    Re: slant 6 carb
    « Reply #3 on: May 24, 2020, 10:30:00 am »
    the 37 screw is there , its under and inside the Carb , there is a PLUG that needs to be removed to get to it , see diagram for instructions

    NOTE / now if your GOOD you can remove the plug without to much damage to reinstall it without them knowing after its adjusted
    put your truck info HERE
    MOPAR TO YA!!!!!! AARON HOWORD TOWNSEND / SLANTEDMIND---GOD BLESSDODGEBOYS FSM STORE
    [email protected]
    former Parts Mgr & A1 Tech @ Pete's Chrysler -Plymouth
    DO NOT use the site IM,s to contact me  l have them turned OFF

    Offline crazzywolfie

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    Re: slant 6 carb
    « Reply #4 on: May 24, 2020, 10:56:41 am »
    ok. i will try taking the carb off and get a better look but not really sure how i would feel about drilling into a carb. it looks like the mixture adjustment screw on other carbs is usually pretty long and sticks out a decent amount.
    93 RamCharger 2wd 318
    89 RamCharger 4x4 318/727/3.21 on 33's
    81 d150 long box 318 670CFM Holley Carb
    If you can't fix it with a hammer, you've got an electrical problem

    Offline dodge82273

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    Re: slant 6 carb
    « Reply #5 on: May 25, 2020, 12:00:34 am »
    drilling / accessing the idle screws WAS a common repair . the exposed screw will be different than the older model, the needle does the same thing tho .... as far as drilling into the carb , its broke anyway .... and all you really need to do is uncover the adjuster under the lump they covered it with ....
    78 to 93 parts trucks
    91 w250 318 518 44/60 single 9 foot driveway plow locked
    87w150 44/corp727 kandy w/ ghost bats/summer
    86-D/W100 44/corp/318mag/carb/4500/aka shit box/winter
    93w150short/44/corp/360/le/mag "caddie"
    93w250LB51844/60posi 318"New Truck"
    93w350 6 tire CC 60 c/a flat bed dump

    Offline DODGEBOYS

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    Re: slant 6 carb
    « Reply #6 on: May 26, 2020, 09:05:31 am »
    the diagram is pretty straight forward , drill hole at 45* angle till you hit the plug - knock plug out - adjust idle screw

    l done hundreds of these , thats why l knew what and which diagram info to post

    NOTE / when they HID the screw they made it smaller to fit under the plug
    put your truck info HERE
    MOPAR TO YA!!!!!! AARON HOWORD TOWNSEND / SLANTEDMIND---GOD BLESSDODGEBOYS FSM STORE
    [email protected]
    former Parts Mgr & A1 Tech @ Pete's Chrysler -Plymouth
    DO NOT use the site IM,s to contact me  l have them turned OFF

    Offline crazzywolfie

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    Re: slant 6 carb
    « Reply #7 on: May 27, 2020, 07:03:35 pm »
    thanks guy. i think we got it sorted out today. there was piece of crud between needle and seat which i don't think was there the other day and the float seems like it is finally starting to work better. the float definitely didn't seem like it was moving smoothly like it should earlier but is now. now i think we need to trouble shoot the ignition again. i think 1 of the used plugs i gave him may have gone bad. was running perfectly for about 5-10km. then went to change the oil and after that it started running poorly. i think it is ignition just because the way engine shakes i don't think it is a fuel issue but it seems to clear up when you give it some throttle. oh well. i wasn't exactly wanting to put platinum plugs in a engine with points but it was all i had that were NGK. most of my other ones were champion ;D. definitely headed in the right direction. it is no longer spewing black smoke and starts awesome just like a dodge should lol. 
    93 RamCharger 2wd 318
    89 RamCharger 4x4 318/727/3.21 on 33's
    81 d150 long box 318 670CFM Holley Carb
    If you can't fix it with a hammer, you've got an electrical problem

    Offline dodge82273

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    Re: slant 6 carb
    « Reply #8 on: May 27, 2020, 09:02:34 pm »
    some thing different about the slant 6 you may not be aware of . all the older ones had solid lifters not hydraulic , and as such the valves need to be adjusted occasionally , the exact year the switch to hydraulic lifters is not clear to me , my 69 Barracuda was solid / adjustable . Lifter noise ? adjust and it will run better ..The dizzy has a plastic gear at its base that drives it , pinned in place , it often breaks , won't run .
    78 to 93 parts trucks
    91 w250 318 518 44/60 single 9 foot driveway plow locked
    87w150 44/corp727 kandy w/ ghost bats/summer
    86-D/W100 44/corp/318mag/carb/4500/aka shit box/winter
    93w150short/44/corp/360/le/mag "caddie"
    93w250LB51844/60posi 318"New Truck"
    93w350 6 tire CC 60 c/a flat bed dump

    Offline crazzywolfie

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    Re: slant 6 carb
    « Reply #9 on: May 27, 2020, 09:34:02 pm »
    i am just hoping it is a plug. it still starts flawlessly. no real noises. it was literally running perfectly till we went to do the oil change. we made a few stops here and there and shut the engine off and then fired it back up no problem multiple times before the oil change. i don't know what we did. maybe this is why i pulled most of the platinum plugs out of my truck. maybe 1 of them was bad. i really forget.

    we haven't got a new gear yet but it was on the list. i think i was going to look for a brass one if they are available. it would be nice to convert it to electronic ignition some day but we will see.
    93 RamCharger 2wd 318
    89 RamCharger 4x4 318/727/3.21 on 33's
    81 d150 long box 318 670CFM Holley Carb
    If you can't fix it with a hammer, you've got an electrical problem

    Offline dodge82273

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    Re: slant 6 carb
    « Reply #10 on: May 28, 2020, 02:42:40 am »
    by '74 they all should be the ecu ... if its points , it is the same thing , but requires a little maintenance that's all , some LOOOONG screwdrivers and your good to go ..
    « Last Edit: May 28, 2020, 02:44:49 am by dodge82273 »
    78 to 93 parts trucks
    91 w250 318 518 44/60 single 9 foot driveway plow locked
    87w150 44/corp727 kandy w/ ghost bats/summer
    86-D/W100 44/corp/318mag/carb/4500/aka shit box/winter
    93w150short/44/corp/360/le/mag "caddie"
    93w250LB51844/60posi 318"New Truck"
    93w350 6 tire CC 60 c/a flat bed dump

    Offline lilredex

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    Re: slant 6 carb
    « Reply #11 on: July 2, 2020, 04:38:51 pm »
    Slant sixes in Canada had hydraulic lifters from 1980 up. Mopars here had ECU boxes from 1971 up.

    Offline crazzywolfie

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    Re: slant 6 carb
    « Reply #12 on: July 2, 2020, 06:35:51 pm »
    this thing has points and there is no question about it. i know a points distributor when i see one.

    my dad says the car seems to be running a bit better but i still don't 100% believe him since i can see it in the way the engine moves while idling. i did replace the fuel filter on it last week while install new wheel cylinders and brake shoes. old fuel filter was junk and the gas that came out of it was questionably rusty. that did help it run a bit better but still not 100%. we did have the carb kit show up today along with a new distributor cap/rotor/air filter. cap/rotor made no difference but at least it has brass contacts now instead of the aluminum ones. i am hoping this is the last time i have to take the carb apart. hoping to do that at the same time i install the new front drums and the rest of the parts we ordered to do a tune up on the ignition system. who new stupid stuff like brake shoes and drums were that hard to find for this thing? had to order drums from rockauto and felt extremely lucky that the parts store was able to find a set of  rear brake shoes and able to get them overnight. i almost wonder if they might have been oversized shoes. had 1 adjuster wound all the way in and still nearly didn't get the drum back on and you can see the drums have been machined at some point. oh well. we will get this car all sorted out eventually.
    93 RamCharger 2wd 318
    89 RamCharger 4x4 318/727/3.21 on 33's
    81 d150 long box 318 670CFM Holley Carb
    If you can't fix it with a hammer, you've got an electrical problem

    Offline dodge82273

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    Re: slant 6 carb
    « Reply #13 on: July 3, 2020, 12:42:22 am »
    drums/shoes , the other thing to look at is the parking brake cable/and spreader bar ... they too can make the shoes seem too big . each side has 1 shorter lining shoe , it always goes in front of the axle , short shoe forward.
    « Last Edit: July 3, 2020, 12:45:20 am by dodge82273 »
    78 to 93 parts trucks
    91 w250 318 518 44/60 single 9 foot driveway plow locked
    87w150 44/corp727 kandy w/ ghost bats/summer
    86-D/W100 44/corp/318mag/carb/4500/aka shit box/winter
    93w150short/44/corp/360/le/mag "caddie"
    93w250LB51844/60posi 318"New Truck"
    93w350 6 tire CC 60 c/a flat bed dump

    Offline crazzywolfie

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    Re: slant 6 carb
    « Reply #14 on: July 3, 2020, 06:38:05 am »
    everything went back together like it should and the shoes sat like they should.i even double checked after the first test drive. i think the linings may just be taller. it took the guy at the parts store about 10 minutes to track down this set.
    93 RamCharger 2wd 318
    89 RamCharger 4x4 318/727/3.21 on 33's
    81 d150 long box 318 670CFM Holley Carb
    If you can't fix it with a hammer, you've got an electrical problem