Timing--- Crank---Cam--valves
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If the relief valve went bad and is stuck open then oil isn't reaching top of engine.
If oil isn't reaching top then everything is drying out, trying to find why that cam chain got stuff like that.
You could be right that coolant was low and things got hot. Also if cam timing was off like you said that could cause excessive heat to linger longer in the top end than is healthy.
If it was me, I would be pulling oil pump and relief valve to inspect when I was this far in, if you're doing piston and chain already I would chase down any potential cause to no oil travel before I put it together and risked all my new parts.
If oil isn't reaching top then everything is drying out, trying to find why that cam chain got stuff like that.
You could be right that coolant was low and things got hot. Also if cam timing was off like you said that could cause excessive heat to linger longer in the top end than is healthy.
If it was me, I would be pulling oil pump and relief valve to inspect when I was this far in, if you're doing piston and chain already I would chase down any potential cause to no oil travel before I put it together and risked all my new parts.
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all been great advice....gave me some idea's...and if my thinkin' was on track!
Ok guys.....geesh.....life gets in the way at times... I got all the parts in mail finally. I just took old piston off, to put new one on...wish I'd done that sooner. I can now CONFIRM this machine OVER HEATED! Once I honed the cyl...wish I'd done that before ordering parts....I more likely would have sent it out to be bored...but I'm gonna put it all together and pray. I'm going to do everything I can for the oil pump... then after all together.. will do things to CONFIRM the water pump and radiator is plug free...Not very happy with 1st owner...he's supposed to be a know all at mechanical things. I guess he missed the basic oil and antifreeze course along with a thing called proper maintenance... ok that was my rant on him...moving forward...I'm thinking of putting some "T's" in the oil line and in the water cool line. You guys have any idea's or thoughts or such? I'm doing it so I can watch that they are working and perhaps I should put some sort of pressure guage set up.?????. On my dirt bike I had a clear window...it was great, I could always watch the level of my oil and see it's color..but I always did proper maintenance... but it was nice to be able to kinda look in and be sure all was ok...I also like the cars back in the day...you could watch a gauge for water...oil....temp...bat...fuel.....now days U got to trust the idiot light will come on and warn ya...that seems kinda late in the game. but again....I'm old and our world is all tech craze
be safe guys.....enjoy when can.....in our wild wild world at tis moment ......Thanks!
Ok guys.....geesh.....life gets in the way at times... I got all the parts in mail finally. I just took old piston off, to put new one on...wish I'd done that sooner. I can now CONFIRM this machine OVER HEATED! Once I honed the cyl...wish I'd done that before ordering parts....I more likely would have sent it out to be bored...but I'm gonna put it all together and pray. I'm going to do everything I can for the oil pump... then after all together.. will do things to CONFIRM the water pump and radiator is plug free...Not very happy with 1st owner...he's supposed to be a know all at mechanical things. I guess he missed the basic oil and antifreeze course along with a thing called proper maintenance... ok that was my rant on him...moving forward...I'm thinking of putting some "T's" in the oil line and in the water cool line. You guys have any idea's or thoughts or such? I'm doing it so I can watch that they are working and perhaps I should put some sort of pressure guage set up.?????. On my dirt bike I had a clear window...it was great, I could always watch the level of my oil and see it's color..but I always did proper maintenance... but it was nice to be able to kinda look in and be sure all was ok...I also like the cars back in the day...you could watch a gauge for water...oil....temp...bat...fuel.....now days U got to trust the idiot light will come on and warn ya...that seems kinda late in the game. but again....I'm old and our world is all tech craze
be safe guys.....enjoy when can.....in our wild wild world at tis moment ......Thanks!
I've definitely seen guys add oil pressure/temp and water pressure/temp gauges to their UTVs and ATVs.
Be careful with a hone I'm not sure if the 650h1 is a nikasil cylinder or not, someone here can confirm I'm sure.
Be careful where you send for overbore, might be better to find a replated jug if its nikasil
Be careful with a hone I'm not sure if the 650h1 is a nikasil cylinder or not, someone here can confirm I'm sure.
Be careful where you send for overbore, might be better to find a replated jug if its nikasil
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26 Posts
I was hesitant if it was a Nikasil....but.....the OVERHEATED glaze was AWFUL!... I watched two video's....and I made the choice to hone...once I honed and it was very brief...I could see how bad this machine was abused with dark **** oil-overheat factor ...so it's kinda a catch 22...plus one big factor is my model IS NOT SOLD there are NO replacement JUGS! ..it's VERY hard to even find a used cyl bore! Only one company for 1500 will take your old set up and IF it's do-able they will do things correctly..well..this machine to me is not worth 1500....so I'm takin' a different path...hope it works with good clean oil and a properly working water pump?? I'm gonna throw up the video's.....incase ya guys want to take a quick view
The first video...you can jump to time 10;30 that will help ya make your own choices......
Here is another video...this is exactly what I have...as for the motor...but his cyl was actually glazed very little...mine was like a burnt glaze...it was not pretty...again ..hope I'll be ok with the little honin' I did....
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26 Posts
lol .....I see my post below.....I said dark shi+ oil and I got punished.....sorry ..my bad...but ya guys get the idea...
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