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<blockquote data-quote="ossagp" data-source="post: 202612" data-attributes="member: 1650">I have yet to have a motorcycle engine with an oil pump that operates within spec fail to deliver oil to the top end by spinning the rear wheel in a lower gear. you dont have much trouble getting an rpm in the high idle range that way.&nbsp;&nbsp; It is inconvenient to do,&nbsp; but if you have to know it is workable.&nbsp; head off with the cam chain out of the way it is easy on some models to see that oil is getting to the head.&nbsp; cams in and sparkplug(s) out make it tougher,&nbsp; but if you just have to know then you do what you need.&nbsp; Many of us just prelube (as i am sure you will) and if we are at all nervous leave the cover or cover caps/plugs (when equipped) off and start the engine up.&nbsp; If I don't see oil flying before I want my silcone glove hand off the pipe I am sure I would be shutting off and looking for the reason.&nbsp; So far I haven't had a problem with a fresh pump.&nbsp; knock on wood.If I owned your bike Jon I would be changing the pump.&nbsp; Many bikes are hard to blow compressed air into from the oil filter outbound,&nbsp; but usually pretty easy to blow back from the oil ports.&nbsp; just use a rubber tipped blow gun.&nbsp; Anyway, you can tell if istis stopped up at least.&nbsp; Just like blowing out would,&nbsp; blowing back can send some crud where you don't want it so plan for how to get rid of it.&nbsp;&nbsp; test your oil passages with a cotton swab to see if they are clean from flakes of metal (one of the reasons to change a pump too).Your engine is a plain bearing where the cam is concerned,&nbsp; rather than a ball or needle bearing from what I am seeing. what feeds the cam bearings on the end that failed?&nbsp; Oil is usually thought of as a lubricant being it's first function.&nbsp; Spend some time with the people who design engines and the ones who design the oils and you find that trait is actually down the list.&nbsp; Design manuals vary but most of them show cleaning,&nbsp; cooling,&nbsp; and then lubrication on a system with an oil pump as there priority functions.&nbsp;&nbsp; your cam shows that the lubrication system failed to provide cooling for certain (blue cams being the smoking gun).&nbsp; No matter what you think the most important job is it is easy to see that none of the jobs get done if an adequate supply of the oil isn't there in the first place.I take it you struck out on a machine shop possibly being of some service?</blockquote>

[QUOTE="ossagp, post: 202612, member: 1650"] I have yet to have a motorcycle engine with an oil pump that operates within spec fail to deliver oil to the top end by spinning the rear wheel in a lower gear. you dont have much trouble getting an rpm in the high idle range that way. It is inconvenient to do, but if you have to know it is workable. head off with the cam chain out of the way it is easy on some models to see that oil is getting to the head. cams in and sparkplug(s) out make it tougher, but if you just have to know then you do what you need. Many of us just prelube (as i am sure you will) and if we are at all nervous leave the cover or cover caps/plugs (when equipped) off and start the engine up. If I don't see oil flying before I want my silcone glove hand off the pipe I am sure I would be shutting off and looking for the reason. So far I haven't had a problem with a fresh pump. knock on wood. If I owned your bike Jon I would be changing the pump. Many bikes are hard to blow compressed air into from the oil filter outbound, but usually pretty easy to blow back from the oil ports. just use a rubber tipped blow gun. Anyway, you can tell if istis stopped up at least. Just like blowing out would, blowing back can send some crud where you don't want it so plan for how to get rid of it. test your oil passages with a cotton swab to see if they are clean from flakes of metal (one of the reasons to change a pump too). Your engine is a plain bearing where the cam is concerned, rather than a ball or needle bearing from what I am seeing. what feeds the cam bearings on the end that failed? Oil is usually thought of as a lubricant being it's first function. Spend some time with the people who design engines and the ones who design the oils and you find that trait is actually down the list. Design manuals vary but most of them show cleaning, cooling, and then lubrication on a system with an oil pump as there priority functions. your cam shows that the lubrication system failed to provide cooling for certain (blue cams being the smoking gun). No matter what you think the most important job is it is easy to see that none of the jobs get done if an adequate supply of the oil isn't there in the first place. I take it you struck out on a machine shop possibly being of some service? [/QUOTE]

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