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Makotosun

1972 Yamaha CT 2 Carburetor

  • mpritch41
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1972 Yamaha CT 2 Carburetor was created by mpritch41

So I need a new Carb for my CT 2...the OEM is a mikuni vm 24 sh. It has a short body in order to connect to the airbox.
the only flange fit carb I can find is a vm 20-273.
   It is the exact size of the OEM except its a 20mm intake instead of 24mm.
  Does anyone have any experience with this...will the bike run ok ?

    Thanks,

            mp
Last edit: 12 Feb 2024 13:58 by mpritch41.
12 Feb 2024 13:57 #1

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Replied by Bdee on topic 1972 Yamaha CT 2 Carburetor

I haven't tried it but I have a vm20 in hand and I noticed that the ct's plastic intake manifold only covers the outer half of the o-ring gasket on the the carb. If I were to try I would use a thicker than stock o-ring.
13 Feb 2024 07:49 #2

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  • Gr8uncleal
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Replied by Gr8uncleal on topic 1972 Yamaha CT 2 Carburetor

Presumably you've tried fleabay? Used ones turn up regularly - sometimes advertised correctly, sometimes not! 

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13 Feb 2024 08:03 #3

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Replied by MarkT on topic 1972 Yamaha CT 2 Carburetor

What's wrong with your original carb? 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
13 Feb 2024 08:04 #4

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Replied by darinm on topic 1972 Yamaha CT 2 Carburetor

Worst case I'd say get a spigot to flange mount adapter for a VM24 and use a uni filter on it. But like Mark hinted at, few oem carbs are beyond a basic cleaning.
1972 Yamaha CT2 175
1972 Suzuki TS185 Sierra
2000 Suzuki RM100
2003 BMW F650GS
2009 Yamaha WR250R
2013 Yamaha XT250
13 Feb 2024 20:19 #5

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Replied by MarkT on topic 1972 Yamaha CT 2 Carburetor

Actually I was curious because of a few things...  one is that the stock carbs are by far the easiest solution, two is that not too many are actually "bad", and three is that I have some miscellaneous AT/CT reed valve carb parts like bodies and float bowls so it might be possible to fix the original if something is broken. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
The following user(s) Liked this Post: darinm, Ht1kid
14 Feb 2024 06:43 #6

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Replied by mpritch41 on topic 1972 Yamaha CT 2 Carburetor

I bought a bike with no carburetor
15 Feb 2024 11:27 #7

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Replied by mpritch41 on topic 1972 Yamaha CT 2 Carburetor

This bike was bought without a carburetor.

    Thanks
15 Feb 2024 11:29 #8

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Replied by mpritch41 on topic 1972 Yamaha CT 2 Carburetor

I really  wanted to put the OEM airbox back on it. This model carb was really short...66mm from front to back. most I've found are about 88 mm and  they  too long.

      Thanks
15 Feb 2024 11:32 #9

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Replied by MarkT on topic 1972 Yamaha CT 2 Carburetor

Let me see if I have a complete one.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
15 Feb 2024 11:39 #10

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