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Old 02-02-2013, 12:08 PM   #1 (permalink)
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carb identification

just got a chaparral 440 G44BW engine with these mikunis on it and was wondering if someone could help me identify them and or maybe direct me to rebuild kit thanks in advance



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Old 02-02-2013, 01:21 PM   #2 (permalink)
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All the Chaparral sleds with their own branded engine used a Keihin carb, not Mikuni.

Although they have MIC on the body, I do not recognize the configuration nor can i find it in any of my books.
Looks to be a REPLACEMENT for the original carbs and should be 30mm size.
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Old 02-02-2013, 02:07 PM   #3 (permalink)
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really appreciate you looking for me
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Old 02-02-2013, 07:22 PM   #4 (permalink)
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Old 02-03-2013, 05:39 AM   #5 (permalink)
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Look on the body and see if you find "B" or "BN" on it.
After another look, I suspect that you may have a "BN" carb.
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1980 AC Pantera (donor engine to the 90 wildcat)


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Old 02-03-2013, 03:00 PM   #6 (permalink)
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could not find a b or bn anywhere on the carbs ; ; but did find a couple stripped screws ><
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Old 02-03-2013, 03:58 PM   #7 (permalink)
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found 2 ebay listings that look exactly like mine aside from the mikuni stamp
both say 38mm and one says off of a 340

Chaparral Xenoah Fuji Vintage Snowmobile Mikuni Carb Left Side 38mm | eBay

Mikuni 38mm Carburetors Chaparral Xenoah | eBay

so i believe it to be a bno butterfly carb

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Old 02-03-2013, 05:39 PM   #8 (permalink)
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anyone know of a sled junkyard in nw pa ne oh?
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Old 02-04-2013, 05:19 AM   #9 (permalink)
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http://www.snowmobileforum.com/snowm...html#post67055
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'93 Wildcat 700EFI
w/ Comet 108 Pro-4 clutch & 01 ZR skid

'90 Wildcat Project in progress.

Vintage (sorta)
1980 Indy Trail 440 (for sale)
1980 AC Pantera (donor engine to the 90 wildcat)


http://www.dcdrifters.net/


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http://www.masonicdryden472.org/

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Old 02-04-2013, 09:25 AM   #10 (permalink)
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They look like Mikuni butterfly pumpers to me. RUN, don't walk, away!
Nobody likes Mikuni butterfly pumpers. Convert to Mikuni slide carbs, best way to go.
Same size should work, plug one of the outputs and use a dual port pump. That'll simplify your system and make it much easier to work on and reliable.
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Old 02-04-2013, 08:16 PM   #11 (permalink)
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ty ty
you mean plug one of the ports that the carbs connect to underneath?
anyone done this before and documented it with pics or a vid?
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Old 02-04-2013, 08:24 PM   #12 (permalink)
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Yeah it looks like the two carbs you have each have separate pulse lines. You could always run two different pumps but thats extra work/cost/complexity I wouldn't want when a dual port pump will work just as well.
Just unscrew one port and screw in a short bolt of the same diameter. Actually in the short term while you're troubleshooting and getting everything working the easiest way would be to put a bolt into a piece of fuel line and stick that on one of the ports. I don't like that for long term, the fuel line will eventually degrade and you'll have a nifty little leak.
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'70 Ski-Doo Olympique 12/3 - The Yellow Bullet
'71 Arctic Cat Panther 303 - Wankle Panther
'78 Arctic Cat Pantera 5000 - Back from the dead!
'79 Polaris Cobra 340 - Back from the dead!
'95 Ski-Doo Grand Touring SE 670



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Old 02-04-2013, 10:04 PM   #13 (permalink)
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sorry if this is a dumb question but i need to pick up 2 slide carbs the same size as these, a dual fuel pump, and 2 boots in order to mount the new style carbs? anything im missing? aside from lines
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Old 02-05-2013, 07:29 AM   #14 (permalink)
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And a split throttle cable and split choke cable with lever.
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Old Cat Rider
'93 Wildcat 700EFI
w/ Comet 108 Pro-4 clutch & 01 ZR skid

'90 Wildcat Project in progress.

Vintage (sorta)
1980 Indy Trail 440 (for sale)
1980 AC Pantera (donor engine to the 90 wildcat)


http://www.dcdrifters.net/


Worshipful Master; F&AM Dryden Lodge# 472
http://www.masonicdryden472.org/

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Old 02-05-2013, 08:46 PM   #15 (permalink)
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ok thank you guys very much im new to these snowmobile engines and appreciate the help greatly
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Old 02-09-2013, 09:32 PM   #16 (permalink)
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man i know this is going to be a dumb question but do you change the oil on these old engines? cant see a fill place and cant really id the drain plug
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Old 02-09-2013, 10:46 PM   #17 (permalink)
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no. Its 2 cycle
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Old 02-09-2013, 11:14 PM   #18 (permalink)
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lol ty bud :/

sorry ive worked on mainly small engines, dont know about how these work too much

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Old 02-10-2013, 08:47 AM   #19 (permalink)
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no problem. Had a chaparral early on. Which one do you have? This is a pretty good forum to get questions answered.
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Old 02-10-2013, 02:35 PM   #20 (permalink)
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got the chap 440 g44bw
also got a 340 chap but its missing some bits
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