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View Full Version : How long to 250R cranks last?


rustyATV
02-16-2009, 10:04 PM
20 years!

Called my parts supplier to ask why my '88 crank was taking so long to have a new rod put in it. Turns out the shop that does the work returned it because the journals were out of spec., beat undersized from use.

So now I've had a stator, wiring harness, and a crank crap out due to age.
All250R
02-17-2009, 05:49 PM
That's a long time. It might have lasted longer if the main bearings were replaced more frequently(?). Usually the lower rod bearing would go before a crank journal.
trx310R#24
02-17-2009, 07:08 PM
i may have one for you if no one wants to buy my parts motor for 360
rustyATV
02-17-2009, 08:58 PM
Originally posted by All250R
That's a long time. It might have lasted longer if the main bearings were replaced more frequently(?). Usually the lower rod bearing would go before a crank journal.

The only way my crank bearings could have been replaced more frequently is if I did them with every new piston, and not just the annual rebuild.
rustyATV
02-17-2009, 09:57 PM
Originally posted by trx310R#24
i may have one for you if no one wants to buy my parts motor for 360

How much time is on it?