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LT2 / at2 similarity

  • gw1170
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LT2 / at2 similarity was created by gw1170

Hi guys, how different are the LT2 and AT2 ? are the frames the same ?, can the engines be swapped about, ie 125 top end on the 100 etc ? cheers
24 Mar 2021 12:01 #1

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Replied by darinm on topic LT2 / at2 similarity

LT2 is a smaller frame and different engine. The AT2 and CT2 share frames and most the engine.
1972 Yamaha CT2 175
1972 Suzuki TS185 Sierra
2000 Suzuki RM100
2003 BMW F650GS
2009 Yamaha WR250R
2013 Yamaha XT250
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24 Mar 2021 12:24 #2

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Replied by RT325 on topic LT2 / at2 similarity

Complete motor 'might' bolt in but i've not done it. Same type of mounts for all those.
24 Mar 2021 16:25 #3

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Replied by darinm on topic LT2 / at2 similarity

Huh wonder if it would. From my brief ownership of a LT2/CT2 at the same time, every aspect of the LT2 felt smaller but that could have just been my perception amplified by the frame being smaller.
1972 Yamaha CT2 175
1972 Suzuki TS185 Sierra
2000 Suzuki RM100
2003 BMW F650GS
2009 Yamaha WR250R
2013 Yamaha XT250
24 Mar 2021 20:27 #4

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  • gw1170
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Replied by gw1170 on topic LT2 / at2 similarity

Thanks guys, had the chance of a cheap one and thought i'd upgrade it to a 175 but not bother now 
25 Mar 2021 04:56 #5

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Replied by MarkT on topic LT2 / at2 similarity

I'm also pretty sure a complete engine swap would be possible...  not just the top end though.
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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25 Mar 2021 17:01 #6

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Replied by jims175 on topic LT2 / at2 similarity

I actually did that when I was a lot younger, my 100cc holed a piston and somebody at my high school made me a deal on what was supposed to be a 125cc but it turned out to be a 175cc and it dropped right in!
27 Mar 2021 10:04 #7

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Replied by darinm on topic LT2 / at2 similarity

That must have been a blast because I remember the LT2 being notably lighter than the CT2. Or maybe it just felt that way because it's smaller.
1972 Yamaha CT2 175
1972 Suzuki TS185 Sierra
2000 Suzuki RM100
2003 BMW F650GS
2009 Yamaha WR250R
2013 Yamaha XT250
27 Mar 2021 12:52 #8

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