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Author Topic: lt250r rebuild  (Read 685 times)

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lt250r rebuild
« on: October 23, 2013, 02:18:53 pm »
ok so i have read all kinds of stuff on how to do this but i cant find any videos... and i dont feel confident enough to do this but i dont have the money to bring it to the shop can anyone help me
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Re: lt250r rebuild
« Reply #1 on: October 23, 2013, 02:50:47 pm »
are you just wanting to do a top end refresh?
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Re: lt250r rebuild
« Reply #2 on: October 24, 2013, 09:44:47 am »
yes i stuck a ring
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Re: lt250r rebuild
« Reply #3 on: October 24, 2013, 12:17:38 pm »
You are in the right spot. These guys on here can tell you how to do just about anything.  2c
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Re: lt250r rebuild
« Reply #4 on: October 24, 2013, 02:30:00 pm »
Top end rebuild is quite simple. What are wanting to know or what is your confidence low on?
Ive never tried it with a motor in theyre always out but you should be able to pull head/cylinder with the engine still in the quad.
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Re: lt250r rebuild
« Reply #5 on: October 24, 2013, 06:30:00 pm »
is there anything els i have to do besides 1. oil evrything up 2. make sure i have a clean gasket surface 3. make sure the rings are in the right position 4. put the cylinder on and make sure the piston moves corretly and feels good 5. put the head on 6. torque it all down .? is that all ? and what should i run my first tank of gas ratio wise ?
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Re: lt250r rebuild
« Reply #6 on: October 24, 2013, 06:47:33 pm »
Go for it man.

If you are unsure about a step, just post some pics and ask. Its extremely rewarding when its all together and fires up for the first time.  +k2
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Re: lt250r rebuild
« Reply #7 on: October 24, 2013, 08:30:22 pm »
#3 the rings have a marking near the end gap, that goes on facing up.

#6 initial torque 12 lbs. then retorque to 19 lbs final

Yup go fer it

Ask any question u got.... Post a pic to be specific if needed

Good luck  (Y)
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Re: lt250r rebuild
« Reply #8 on: October 25, 2013, 05:53:23 am »
Leak down test after your done and the  3    8mm bolts on the exhaust  only get torque to 8psi.
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91 Lt250r Bartlett port and head mod v force 2 Hinson Clutch Basket Cool Head Scp Pipe and silencer ,KN air filter ,EBC clutch, Ohlins  Triple rate Shocks Redone by PEP Shocks,Stock Rear Shock Redone By Pep Shock,  DG nerf Bars , Lonestar axle 2+2,Lonestar Swingarm ,Douglas Red Label rims.

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Re: lt250r rebuild
« Reply #9 on: October 25, 2013, 06:14:35 am »
make sure piston is facing the right way, and install some billet washers and rm bearing.
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Re: lt250r rebuild
« Reply #10 on: October 25, 2013, 11:39:08 am »
From what I've learned on here, GrkGuys' advice is very important. I'd hate all your work to get trashed cause the washers and bearings failed. It's a really cheap fix also. Go to the store at the top of the page, and get the thrust washers and rm bearing kit for a great price.
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Re: lt250r rebuild
« Reply #11 on: October 26, 2013, 06:14:32 pm »
ok so i got it all back togather and started it let it idel for 2 minutes let it cool completely and then started it and let it set for 6 minutes next im going to let it set for 10 after that what other break in methods should i use. also i mixed the first tank 18:1 is that rich enough ? only one thing i have a qustion about it has a  rattel sound its not real loud or nouthing but did i do something wrong
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Re: lt250r rebuild
« Reply #12 on: October 26, 2013, 07:57:10 pm »
and does anyone know what the high temp is supposed to be ?
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Re: lt250r rebuild
« Reply #13 on: October 26, 2013, 09:02:06 pm »
18:1 is plenty rich enough lol. Me I just mix it 32:1 right from the get go after rebuild and run it but same say a little richer after top end replace.
2 strokes have lots of pinging sounds like angry bees. When its idling just get down close to the quad and really listen and go around it to pinpoint a general area then go from there.
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Re: lt250r rebuild
« Reply #14 on: October 26, 2013, 11:55:37 pm »
My 86 would rattle while idling. Never could figure out where it was coming from.
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Re: lt250r rebuild
« Reply #15 on: October 27, 2013, 07:56:53 am »
ok so another problum im having is that one of the cylinder head bolts just keeps tighting but wont tighten the stud almost seems like it comming out any ideas on what to do??? i mean the rest of the nuts are torqued and this nut is tight will it be ok to ride ?
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