Author Topic: 1985 LT250R Quadracer top end rebuild questions  (Read 658 times)

Offline Boneshaker8

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1985 LT250R Quadracer top end rebuild questions
« on: March 07, 2023, 08:58:12 am »
Hey everyone!  New to the group and have questions concerning the possible top end rebuild of my 1985 LT250R. It hasn't been running for a long time because when I would try to start it, I'd have to kick it literally 100 times to get it to start!  I never pulled a compression check or have torn it down to check bore size on it so I can't say that's the main problem or possibly  the carb is junk.  Anyway,  to rebuild it,  does the jug need to be bored to a larger size and new pistons and rings?  Is it typical to do all that or simply re-ring it?  If boring is necessary,  who does that?  If anybody has knowledge or experience in this, please advise!  I'm kinda wanting to get it running again so I can scare the **** out of myself all over again!  Thanks!!

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Offline ThrustWasher81

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Re: 1985 LT250R Quadracer top end rebuild questions
« Reply #1 on: March 08, 2023, 09:10:52 pm »
Won't know if it needs bored until a competent person checks the bore throughout well. Will need a bore gauge and calipers.

First step is a proper compression test with a good gauge.


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