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18 Feb 2019
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TOPIC: Rebuilding dad's 1972 DT2MX

Rebuilding dad's 1972 DT2MX 21 Jun 2016 15:06 #11

  • YAMABOBINTEXAS
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Zads,

I may have some other parts for this model that may be in much better shape than yours. Including a cylinder and head. I rebuilt one of these bikes a few years back and have a few spare parts. Let me know.

YAMABOB :likey
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Rebuilding dad's 1972 DT2MX 28 Jun 2016 07:16 #12

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I put some more hours into this over the weekend, unfortunately I was unable to break the piston free, as it turns out (or doesn't turn :ROFLOL ) the crank is seized as well. I decided to remove the piston by taking it out in small pieces, I'm not sure if this was the best decision, but I was careful not to damage the cylinder walls and now I can move ahead.

I then split the cases.







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Rebuilding dad's 1972 DT2MX 30 Jun 2016 08:02 #13

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Both of the crankcases have damage on them. The right crankcase lip that retains one of the bearings is broken.

The left crankcase has damage on one of the bolt holes that I think connects the cover.

I'm trying to find out if this can be repaired. Any thoughts would be appreciated.

Thanks
Zads

Right crankcase


Close up shot of damaged lip


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Rebuilding dad's 1972 DT2MX 30 Jun 2016 08:04 #14

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Left crankcase



Close up of damaged bolt hole
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Rebuilding dad's 1972 DT2MX 30 Jun 2016 09:20 #15

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I think Rich (Racer Clam) can repair cases. might give Rich a try.
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2 1968 DT1s,1970 RT1M,1970 DT1C,1971 RT1B,1971 Honda Z50K2,1974 DT100A,1974 Honda MT250,2 1975 DT400Bs,1975 Honda CR250M1,1978 DT175E,1979 Honda CR250R.
Dave
Jesus is Lord!

Rebuilding dad's 1972 DT2MX 13 Jan 2019 21:41 #16

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Are you still working on the DT2MX?

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