I removed my oil pan tonight. Laying in the bottom in the oil I found a small nut. (nothing else)
It looks to be maybe an M6 (measures .200 inches inside the nut)- it is a nut that has an attached cupped washer
(maybe an antivibration style) which swivels but doesn't come off. It appears to be nickel plated (?)
I looked up under the inside of the engine with a flashlight but I couldn't see anything that could have a nut that size.
I wondered if it could have been from under the rocker covers- but I don't see anything like that in there....
I didn't see anything that size in the front gear case when I did the KDP. Anyone have any ideas where I might look that it might have gotten into the pan from ?
The reason I removed the pan- on the bottom of the pan about 2 inches behind the drain plug there appears to be a small metal screw put in from the outside. The screw seems to be coming through and pushing up the doubler plate on the inside of the pan. It appears to be pushed up about 3/8 inch. My intent was to weld up the hole. What is the doubler plate doing ?
Is it supposed to be spot welded to the inside of the pan so it cant come up ? I think the engine sat outside resting on the pan- so I think the bottom of the pan got slightly distorted which might have broken a spot weld - and maybe why the screw is there. If that is so- I should be able to feel the residue of the spot weld on the underside of the doubler plate....... have to check that tomorrow. Do you think any of that makes me have to replace the pan ? OR do I just work the wrinkles out and weld the hole up ? ( the upper rim looks fine where it bolts on...)
Tim