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eXc

Does my YZ250 need a new bottom end?

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10 minutes ago, Motox367 said:

Alot of time can take apart and clean put back together will be fine

Maybe, I just dropped everything and went in house til tomorrow

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I was hoping to finish top end tonight....lost a darn $2 spring from the Powervalve. sigh. More orders.

 

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38 minutes ago, eXc said:

I was hoping to finish top end tonight....lost a darn $2 spring from the Powervalve. sigh. More orders.

 

I hope there's no chance you lost it to the inside of the motor :confused:

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No, I only get short periods of time to work on bike and its Almost always after dark. I had to clean up the power valve parts.

I had two springs when I went out to wash and none when I came back. I found one but not the other.

I did think "bad idea doing this under a light but was careful...not careful enough.

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1 hour ago, eXc said:

No, I only get short periods of time to work on bike and its Almost always after dark. I had to clean up the power valve parts.

I had two springs when I went out to wash and none when I came back. I found one but not the other.

I did think "bad idea doing this under a light but was careful...not careful enough.

Is it possible those springs just slid into each other and it appears as one spring?  I ask because I just cleaned up all my power valve parts and when laying them out on the table - OH CRAP, I LOST A SPRING.  But after carefully looking at the spring, yes, there were 2 there.

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40 minutes ago, 2 STROKE YZ DOC said:

Magnetic, get out their and sweep the area with one. 

I still bet they're just stuck into each other.

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2 minutes ago, motoxvet said:

I still bet they're just stuck into each other.

I know with my old eyes they wouldn't see it unless I pull out the 200's... :smirk:

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10 hours ago, motoxvet said:

Is it possible those springs just slid into each other and it appears as one spring?  I ask because I just cleaned up all my power valve parts and when laying them out on the table - OH CRAP, I LOST A SPRING.  But after carefully looking at the spring, yes, there were 2 there.

possible, but not the case unfortunately.

 

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5 hours ago, 2 STROKE YZ DOC said:

Magnetic, get out their and sweep the area with one. 

I did try with a magnet, and planned to make a bigger version. Was considering an electromagnet, or a piece of wood with a stack of magnets.

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I woke up through the night thinking the spring could be stuck in the brush I used...and it was.

So engine is done except missing transmission seal, so can't do leak down test.

When I do the leak down:

1. do I need the governor side cover on? Figured I'd leave it off to check for leaks at the seal of need be.

2. Do I need to plug the coolant lines, or are they a separate system?

Gosh I hope it doesn't leak!
IMG_0182.jpg

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1 minute ago, eXc said:

I woke up through the night thinking the spring could be stuck in the brush I used...and it was.

So engine is done except missing transmission seal, so can't do leak down test.

When I do the leak down:

1. do I need the governor side cover on? Figured I'd leave it off to check for leaks at the seal of need be.

2. Do I need to plug the coolant lines, or are they a separate system?

Gosh I hope it doesn't leak!
IMG_0182.jpg
 

You just rebuilt it. Unless crank seal is lipped out it wont leak. Run it 🙂 keep soapy water out of it that way. Ive never done a leak down on brandnew engine 

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4 minutes ago, Motox367 said:

You just rebuilt it. Unless crank seal is lipped out it wont leak. Run it 🙂 keep soapy water out of it that way. Ive never done a leak down on brandnew engine 

Yep^^^^and transmission seal doesn't matter unless the case is leaking between Crank wall and trans, it's separate areas. Water system is separate. Assuming the new PV seal is working that cover off is fine.

But as mentioned ive never done it either

:smirk::ride:

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Oh yeah, of course it won't matter for the leak down. Thanks again guys.

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