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Oil chage SURPRISE

9.5K views 25 replies 11 participants last post by  Pat3147  
#1 ·
A friend of mine bought his GT from a forum member in a smooth long distance transaction.
The paperwork showed the oil had been recently changed, so after several months he had to change it.
Using an extension, he could not put back @RL Lemke ‘s oil plug or the original.
After scoping the hole, he decided to disassemble the oil pan and found an obvious damage and an extra plug.
Hard for us to imagine why / how the messed the below pictured plate.

140222
Image
 
#2 ·
Interesting. The "extra" plug was no doubt left behind when somebody didn't want to take the time to fish it out after it fell off the tool. Deformation of the pan looks to me sort of like an impact driver was used at some point. Is the yellow metal a repair with a torch? I'm not a welder, so I don't know the right terms.

When I made my 600 mile oil change, the inner plug took an alarming amount of force to break loose. I was really afraid I'd strip it out. I replaced it with RL's super plug torqued to spec. No drama at the next oil change.
 
#8 ·
There's no way 1/4" drive extension or 5mm allen is going to apply enough torque without stripping to do that much damage, impossible. Someone took a BIG hammer to that inner plate.

Duane
 
#10 ·
Perhaps the bike dropped from a lift or blocks while a wrench with an extension was being engaged with the plug. I can only imagine odd circumstances.
 
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#11 ·
Agree with @earthling and @J-Luv , something WEIRD went down here. Quoting Paul Harvey, I'd love to hear "the rest of the story..."

Duane
 
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#13 ·
I can guess the rest of the story.

Remember how some forum members would tell us that the 5mm hex had stripped? We would suggest that they hammer in a Torx a little bigger. Well, they must have hammered the heck at a much bigger tool to break the plug free. I have to wonder if that owner left the crankcase drain open?
 
#14 ·
@RL Lemke , I had the same thought but ruled it out base on the plug receptacle being repaired/brazed, e.g. the pan had to be off to do that and the 'extra' plug would have fallen out then..

Duane
 
#16 ·
I am guessing zero oil pressure and no lubrication. I have not had one apart, but looking at the drawings, it appears the oil suction tube lives in the depression where the upper plug holds the oil back.

140245
 
#17 ·
I haven't had mine apart, but I think the oil suction would have to be in the lower sump, otherwise that oil would just stay there.

Maybe there was more than one ****-up involved: The pan got screwed up (hammer involvement seems likely) and pulled apart to be fixed with torch. Either the plug was left in the main pan because of seriously sloppy work, or the plug was lost in a subsequent oil change.

This bike's had a hard time of it.
 
#21 ·
So, after reading the link about the K16 engine it seems to me that if the upper plug is left out the oil would drain too fast into the lower sump and starve the suction pump that is picking up oil in the lowest part of the upper sump and putting the oil through the oil cooler and things would be bad because the oil gets too hot. But, that assumes there is some air space below the upper sump for the oil to drain into. It sort of doesn't look like it if there is the full amount of oil in the engine. Reason suggests that it would be bad for the upper plug to be left out, otherwise it wouldn't be there.
 
#22 ·
That's a pretty cool lubrication system. I can see a couple of nice features. It at least partially isolates the oil returning from the engine when it is hottest and circulates it though the oil cooler at low pressure prior to putting it in the lower sump where the pressure pump picks it up.