tyler99

iTrader: (2)

When trying to use an easy out to get the bearing out, I dented the back of the crank where the input shaft of the trans goes in at. It did not puncture a hole, but looks to be close. What is behind that wall, anything I need to worry about before installing my new clutch?

01_SuperSlow

iTrader: (7)

That is an oil plug. If it has a small hole or if you pushed it back, you're going to have a major problem.
Definitely something to worry about.

t_raven

iTrader: (12)

That's a core plug like the "freeze plugs" in the sides of engine blocks. If you didn't puncture it or move it, then I bet it would be fine, but if you can replace it while you have access it wouldn't be a bad idea.

tyler99

iTrader: (2)

I may just go ahead and change it out. Any idea of a part number?

Exidous

iTrader: (11)

I'm not too sure how you would pull it out without removing the oil pan. If it's not punctured or moved then don't worry about it.

85GPLEf41

iTrader: (4)

SO if i am converting my 99 auto ls1 to a t56 then all i would have to do is install a roller bearing in the crank snout and tap till it hits the "plug"?... sorry for the thread hijack but im trying to install the t56...

01_SuperSlow

iTrader: (7)

^^ No, the pilot bearing sits flush with that thin outer lip of the crank. Look at the picture.
You can't tap it far enough to hit the plug.

wrd1972

iTrader: (12)

If it aint leaking, run it.

lizeec

iTrader: (57)

If it doesn't appear to be moved or cocked I would run the engine for a minute as the oil pressure would show a leak if it is punctured. You might sleep better knowing that you put a new one.

If it does decide to leak down the road it will ruin your new clutch.

garys 68

iTrader: (1)

There's no pressurized oil behind the plug. The crank is simply drilled through to the 7/8 rod journal. If there's a hole in the plug, splashing oil can get through and on to the clutch.