Just a stupid question here......has anyone ever removed the plug on the very bottom of the crankcase?.....I have cam chest open and was just kinda thinking about taking out the plug and pouring some fresh oil in inner bearing holes and draining out bottom to maybe help flush the lower end of any sludge whatever. Is this a good or bad thought?......any input as to other types of oil/gunk remover etc that would work also?.

Thanks...Scott

 

Bad idea and totally unnecessary. I believe that plug is red loctited in and I've heard of people cracking / stripping the case when they remove it or put it back in. If you've changed you oil regularly there is no sludge down there.

 

Don't do it! You'll be lucky if you don't ruin the cases getting it in or out. It's totally unnecessary to mess with.

 

Sludge? How bad of shape is your motor in? Id leave that plug alone.

 

I've heard stories removing that plug has cracked cases. I'd leave it alone.

 

I've read Internet posts about people hearing stories that removing the crankcase plug has cracked cases.

If you are worried about getting all the old oil out, then you should follow this example:

 

I guess I'll leave it alone. Change oil regular so it was just a dumb thought.

 

I wouldn't call it a dumb thought considering there is a plug located at the bottom of the case in the first place..

A dumb thought would be drilling a hole in the bottom of the case, then putting your own plug in there.

 

The company that makes that Scavenger oil change gadget has a video on removing this plug as part of using their system on the newer touring bikes. You remove that plug and install a fitting that is supposed to help remove more dirty oil than using just the drain plug. The video shows them removing and replacing the plug after the oil change is done. They don't give any warnings about removing or reinstalling the plug, and I'd think that if their customers had issues with that plug they'd have a big problem to deal with. My service manual also refers to removing the plug, and the torque value to installing it is pretty close to the torque for the drain plugs. But I'd personally not remove the thing unless I had a reason.

 

I installed an oil temperature gauge a few years ago and I'm almost sure that was were the temp sensor screwed into. I had no issues with it.

Paul in Colorado