BeauLauber
Novice Class
Green Blood
Posts: 51
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posted January 17, 2002 07:50 PM
Oil Starvation>>>> Sling Shot and Everyone...
Sling Shot Had mentioned in Harrys post (sorry about the bike Harry that sucks  ) that bikes that went down on the exhaust side are prone to lock up soon after. Is there any ryhme or reason to this? I just bought a salvaged bike that had been down on the exhaust side and now i am worried. If anybody has any more info on this i would appreciate it.....
thanks,
beau
  
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Phil
Expert Class
Posts: 420
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posted January 17, 2002 08:00 PM
Mine was on it's exhuast side, only for a few seconds, haven't had any problems.
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"Look at Dad, trying to look young again."
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ridgeracer
Pro
Posts: 1309
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posted January 17, 2002 09:20 PM
I think the reason was that the filter is on the left or high side if it falls on the exhaust and that it and the oil pickup being out of the oil would cause air to get trapped in the system.
If the bike was down for just a few seconds then the oil may not have had time to completley drain out of the filter.
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BigJ12
Expert Class
Posts: 107
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posted January 17, 2002 11:04 PM
Doesn't the filter have a check valve it? I thought it did.
If I remember correctly, I think Harry said that he only used the oem filter for the ZX-12. So why did his blow up? I think we are reaching on this one, I just cant see this problem being caused by a rt side lay down.
BigJ12
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harryzx-12
Needs a job
Posts: 3643
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posted January 18, 2002 05:29 AM
I put about 1500 miles on my bike after I crashed in the N GA. mts in july before it locked up.
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"Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways- Body thoroughly used up, totally worn out...Screaming "WOO HOO, What a Ride !!!"
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kawair
Parking Attendant
Posts: 26
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posted January 18, 2002 05:45 AM
I put mine down hard in Sept. 2000 ($4000 damage,hard enough to bust open clutch cover)on the exhaust side and have since run it 4000 miles of fast backroad riding. The bike runs perfectly with no problems.
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sling shot
Novice Class
Posts: 43
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posted January 18, 2002 10:39 AM
quote:
I think the reason was that the filter is on the left or high side if it falls on the exhaust and that it and the oil pickup being out of the oil would cause air to get trapped in the system.
If the bike was down for just a few seconds then the oil may not have had time to completley drain out of the filter.
Ridgeracer is correct on the theory; data was supporting that any length of time on the exhaust side apparently trapped air in some cases to where in less than 2000 miles a bearing would spin from being dry at the time of the accident.
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grabbing life by the throat and hanging on for all the thrills I can get
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hott-rodd
Novice Class
Posts: 96
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posted January 18, 2002 12:59 PM
I think the oil pick-up is the key, not the filter.
If the bike were on the right(exhaust) side the pick-up
would have NO chance to get oil. It aslo would be important to know if the engine continued to run on died on impact.
What ya think?
hott rodd.
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blkrnbw
Novice Class
Posts: 61
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posted January 18, 2002 01:32 PM
as far as I know the bike will cut off if on its side. Can someone confirm this.
Brian
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BigJ12
Expert Class
Posts: 107
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posted January 18, 2002 01:47 PM
They should, but thats not always the case. In my job I look at wrecked commerical equipment and most of the new big truck & tractor engine manufacturers ie Caterpiller, Cummins, Detroit Diesel, Mack, International. etc... all come with a lay over cut off switch. Most are oil pressure sensing switches that will shut off the engine when the tractor goes over, but let me tell you this in NOT always the case and I have seen many a new engine with minor to major bearing and engine damage due to only running for a short time on their side! If you dump your bike and it ran long enough on it's side for you to notice it,or you had to shut it off, then you better check them bearings. We check bearings on ALL layovers regardles if the engine shuts off or not.
BigJ12
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Sling shot
Novice Class
Posts: 43
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posted January 19, 2002 06:43 AM
quote:
as far as I know the bike will cut off if on its side. Can someone confirm this.
Brian
Sadly enough ... this is true at least on the left side the engine shuts off automatically. I did start mine back up (with no light indication of problems) to ride it onto a flat bed tow truck; but never rode it again since the 12 was totalled. I believe BigJ12 has the correct procedure ... "check the bearings regardless".
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grabbing life by the throat and hanging on for all the thrills I can get
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ra12r
Zone Head
Posts: 919
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posted January 19, 2002 08:18 AM
The mechanics and the lean angles are the same for all layovers on fairly level ground. So come up with something else please....the pic up is a long rubber tube anyway!
The issue is the amount of oil in the motor during running conditions..."WE" should never keep our bike "LOW" on oil for horsepower. A pressure DUMMY light has a threshold to be activated. It is possible that the crank can be barely getting enough oil and the Dummy light not come on. Then over time these problems develope because the pump keep most of the oil up in the top due to the level being low. Besides, all high compression engines are going to "USE" a little oil and it is not bad. But when you don't have the right oil level, then it stays too low for full effeciency oiling in the system, but enough to keep the light off, Stuff then wears out slowly!!! And for a high rpm engine, 5000 mi is much more use than a motor running at 2000rpms all the time in your car. My Advice, keep your bikes FULL of oil!!!!!! I would be willing to BET that it is simply an oil level problem!!!
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All must bow to the "Ra Supremecy"...
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