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Head Gasket??

the piston on the right has most definantley been "washed" either too much fuel or water. my guess if you could smell antifreeze thats the problem. did the orings look bad anywhere on that cylinder???
 
yeah, the inside o ring will not stay in the groove it does not fit as tight as the other onr which had the piston replaced last year, should have done both at that time.

Anyone know what size they are or do you have to buy them at cat?
 
When you put the o-rings back on, coat that groove with grease. This will work as an adhesive to hold the o-ring in place while you put the head on, keeping you from pinching it. It also makes it MUCH easier to get a stretched out o-ring back in place.
 
take your old O ring to a local hydrolic shop (parker hose here) you can buy them from .50 to 2.00 each or pay 10.00 each from cat.
 
and yes, buy them from Cat!

???


Cause cat has them specially mfg'd to a tolerance unobtainable from any other location?

I find it hard to believe that it's all that different from any other O-ring of that diameter & thickness.

Hell, last year we took a smaller one & stretched it to fit one of my sleds, it's never had a problem, I don't think you could get much worse than that!
 
???


Cause cat has them specially mfg'd to a tolerance unobtainable from any other location?

I find it hard to believe that it's all that different from any other O-ring of that diameter & thickness.

Hell, last year we took a smaller one & stretched it to fit one of my sleds, it's never had a problem, I don't think you could get much worse than that!


I'm not saying that. I know they are likely available elsewhere. But for the difference in cost, is it really worth your time tracking them down and sourcing them from somewhere else?

And if for whatever reason, the O ring is incorrect or fails, is it worth risking a motor or being stranded somewhere over a couple bucks?

I could see if you were in a pinch, but not when it's October and there's nowhere to ride yet :)

I'm just saying..... :beer;
 
take your old O ring to a local hydrolic shop (parker hose here) you can buy them from .50 to 2.00 each or pay 10.00 each from cat.

Just make sure they are Viton material, not just regular old rubber. Viton o rings are used in higher pressure/higher temperature applications such as this.
 
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