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Author Topic: Trouble with 85 lt 250r motor  (Read 453 times)

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Trouble with 85 lt 250r motor
« on: February 23, 2014, 08:14:42 pm »
I broke down the whole motor and come to find out it has side to side movement  with the crank in the crank case. I got a differnt crank and still does it so iam not really understanding the issue.... Please someone help me....

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Re: Trouble with 85 lt 250r motor
« Reply #1 on: February 23, 2014, 09:47:30 pm »
are u saying the rod has side to side play on the crank? if so, a lil play side to side is ok . its the up and down play u dont want.
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Re: Trouble with 85 lt 250r motor
« Reply #2 on: February 24, 2014, 12:35:27 am »
If the crank is bolt into the bearing. If it slides side to side bolted. Your bearing pockets are worn out. If that the case you will have inserts put in or find a set that in good condition.
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Re: Trouble with 85 lt 250r motor
« Reply #3 on: February 24, 2014, 11:29:20 am »
Thank you for the hints guys. The movement I have is not in the rod on the crank but the movement I have is the whole crank moving side to side in case.

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Re: Trouble with 85 lt 250r motor
« Reply #4 on: February 24, 2014, 11:41:16 am »
Yep, like WV said, a little movment from side to side is ok, but too much will be your bearing pockets. Which would need replaced on way or another. Mine was doing the same thing but I also had movment up and down so for mine it needed the inserts done as well as a crank rebuild.
04 CRF 450R----> My Beast
03 LTZ 400------> Wife's Boy Friend
90 LT 250R------> Done and Ripping
01 CR 125-------> Traded For the LT

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Re: Trouble with 85 lt 250r motor
« Reply #5 on: February 24, 2014, 03:28:50 pm »
How do you replace the bearing inserts. Do you just needs to buy new crank bearings???

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Re: Trouble with 85 lt 250r motor
« Reply #6 on: February 24, 2014, 04:06:32 pm »
Basically the inserts are the sleves on the cases that the bearings get pressed into. the bearings might be fine but sounds like there is wear which allows movment between the bearings and the sleeves. How to replace them is you send it to Jerry hall at Halls Precision Racing and pay him money to put new inserts in.
and what he'll do is cut out the old worn inserts and press in and weld new ones. I dont know of anyone who does those themselves but it might be do able.
04 CRF 450R----> My Beast
03 LTZ 400------> Wife's Boy Friend
90 LT 250R------> Done and Ripping
01 CR 125-------> Traded For the LT

 

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