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1972 AT-2 / it cylinder

  • husky250
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1972 AT-2 / it cylinder was created by husky250

I went through all of this back in February but the scamdemic has everything so backlogged I've been told not to even think about a piston this year. I have a 1972 Yamaha AT-2. I'm setting it up as a vintage xc bike. I did way more research than I care to admit and have been told that a mid 70's it175 cylinder will bolt on (in the same manner that it will bolt on to a trimoto 125). Therefore I have procured a (whatever70's) it175 cylinder and am planning on getting a piston, which I've been told, will bolt on the the at's rod and turn the 125 to a 175. I have read at least one thread on here to that effect and am trying to do about the same mods as that gentleman has. My local shop said no way I'm getting one this year (it was ordered in February). I was hoping someone on here had an idea where it pistons could be had sometime in the next 6 months. I've been down this road before with my kdx and my 200x and it finally worked out. So what say you Yamaha aficionados? Am I at the mercy of my local shop's supplier or do I have another option?
15 Sep 2021 14:27 #1

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Replied by RT325 on topic 1972 AT-2 / it cylinder

IT cylinder won't fit i'm sorry to say. Here's a "77 model to compare with a CT3.
www.partzilla.com/catalog/yamaha/motorcy...e/crankcase-cylinder
www.partzilla.com/catalog/yamaha/motorcy...3/crankcase-cylinder
Sorry i read that wrong AT2 but same base gasket so same problem so far as fitting it on goes. AT2 below.
www.partzilla.com/catalog/yamaha/motorcy...2/crankcase-cylinder

 
Last edit: 15 Sep 2021 14:57 by RT325.
15 Sep 2021 14:54 #2

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Replied by MarkT on topic 1972 AT-2 / it cylinder

I answered you in the other thread you started on this.  Including where to get a piston once you figure out what you actually have....  and the IT175 cylinder will not fit any AT/CT/DT
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
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15 Sep 2021 15:20 #3

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  • husky250
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Replied by husky250 on topic 1972 AT-2 / it cylinder

Well shit, thousand dollars in the toilet.
15 Sep 2021 20:20 #4

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