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Brockey
10-14-2007, 08:46 AM
What mm is a 70 carb? I see these cheap ones on ebay and would buy one if I knew the mm was the same. Anyone put one of these on thier 70's? If so what size and did it needed to be rejetted? My 70 is a 84 if they makes a difference. I noticed the lines and choke are on the opposite side on some of these aftermarket carbs, that doesn't bother me as long as it works. Any info would be great.

Thxs Cyril
super90
10-14-2007, 11:33 AM
Im pretty sure that they're 22mm carbs on the 70s. I have a 84 and the carb is tiny, it could even be smaller though. But crf 50s and pitbikes use 22mm alot so I would say 22.
Brockey
10-14-2007, 03:58 PM
It seems most of them on ebay are 22mm. I wants to buy one and hopefully rid me of my constant flooding problems. I cant get a rebuild kit for a 84 atc 70 here anywhere. They are on back order when I ordered one locally.
james9r9r
10-14-2007, 05:53 PM
Well here's a carb kit for ATC 70's 1978-1985.

http://www.dratv.com/at78to85car1.html
KASEY
10-14-2007, 06:05 PM
Im pretty sure that they're 22mm carbs on the 70s. I have a 84 and the carb is tiny, it could even be smaller though. But crf 50s and pitbikes use 22mm alot so I would say 22.

hmmm if you don't know,,, why waste a post and GUESS!!! he was asking to get the RIGHT information NOT A GUESS,,, how about 14 MM
and those cheap ones will not be jetted for a 70,, :crazy: :crazy:
Brockey
10-14-2007, 07:18 PM
Isnt there someone on here who deals these parts? I would like to buy the parts off a member if they do. Mr. Moshman?
james9r9r
10-14-2007, 10:08 PM
I cant get a rebuild kit for a 84 atc 70 here anywhere. They are on back order when I ordered one locally.





Right imformation I was giving him a link to a kit.
thefox
10-14-2007, 11:34 PM
hmmm if you don't know,,, why waste a post and GUESS!!! he was asking to get the RIGHT information NOT A GUESS,,, how about 14 MM
and those cheap ones will not be jetted for a 70,, :crazy: :crazy:

Only a 14mm? I have heard of people using them on ct70's without a problem, do you think with a rejet they would work on the atc ok? Going up from a 14mm to a 19mm sounds like a big jump, would there still be a low end?
KASEY
10-15-2007, 12:35 AM
i am sure you can jet it to work,, but mounting and aircleaner hookup will be different,, if no other work is done to the motor i doubt it will do much at all except be new,, just a thought,,, i have never bought a carb "KIT" there is only one part that MIGHT go bad in a 70 carb,,, that would be the needle ,, ian i have only seen one bad one in 20 years,, usually a thoughral cleaning does the trick,,, just a thought,,,,,,,,,