oil pan plug??

I went on a 350 mile ride today on my 1200 GRiSO in the first 50 miles I occasionally got a wiff of oii burning but it went away. I completed my trip and when I got home I notices a dark threaded hole in the front of the oil pan. I immediately checked the oil and it was full. I also heard no funny noises in the engine. I stuck my finger in the hole and you can feel threads but seems to be a blind hole. I assume I'm missing a oil pan plug but why didn't I loose any oil???

Same sump, several different Guzzis with different oil paths. That route is unused on the GRiSO. Nothing to worry about.

I tried looking in a parts book but what I found that I thought was it says oil pan plug thread 10x1.0 part #GU31003766. But that's not it. The hole in mine is more like 21mm and a thread I'm guessing is about 1.5. Don't know for sure, can't get a good measurement on it. Can someone set me straight

Why not try cleaning it, coating it with shellac or similar and then gluing (with the shellac?) a black rubber bung to hide the mess?

A picture of the offending orifice would help.

I think he's talking about this area.


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beetle wrote:

I think he's talking about this area.


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Yes thats it. Obviously buy looking at yours I guess a rubber plug will do it. Thanks

If you mean the big 'ole on the bottom right of the sump not the spacer/flange I think but I'm working from memory here, that it is an orifice through which some other machining operation is performed which is then blanked off afterwards.

Anyway in all real terms it is functionless and it is probably blanked off with some sort of threaded plug. Best way to tackle a leak would be to clean the area thoroughly, preferably with the sump off on the bench, in some sort of aggressive degreaser and then spray clean with first brake cleaner and finally contact cleaner. Then apply some Loctite 'Super wick-in' and let it weep into the threads before finally wiping off the excess and then either fill the hole with silastic or a rubber bung sealed with silastic.

Well that's what I'd do.