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Makotosun

1971 DT1 crank dimensions

  • Doctor K
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1971 DT1 crank dimensions was created by Doctor K

Howdy from Texas!  How do I find the crankshaft dimensions (I basically need the width of the crank between the two main bearings) for a 1971 DT1 250?
27 Sep 2022 09:17 #1

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Replied by DEET on topic 1971 DT1 crank dimensions

Maximum 62mm
Minimum 61.95mm

The crank pin cannot be any longer than 62mm
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Where the Yamaha Enduro is still a current model...
Last edit: 27 Sep 2022 12:44 by DEET.
27 Sep 2022 12:43 #2

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Replied by RT325 on topic 1971 DT1 crank dimensions

In theory crank width being in spec should give correct conrod side clearance so need to keep that in mind & i feeler blade the rod clearance as i press it up & i preload the press when getting close & tap the press--been a while-- maybe i tap the crank wheel just get it to creep a little until lightly biting on the blade at the desired rod side clearance. & now i can't remember how much clearance but probably 10-12 thou but don't quote me--or DEET correct me please?. But yes crank width has to be within what DEET said 62mm.
27 Sep 2022 13:51 #3

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