Quote:
Originally Posted by Tim1137
Sorry for my ignorance, but what is WIAIT, and what is an IMS Tube?
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WIAIT is a dreaded curse which is
While I Am In There
which translates to an empty wallet :-)
I don't have any pictures handy at the moment -- they reside on another computer
so you'll have to bear with me textually.
IMS Tube: InterMediate Shaft Tube.
It is the Tube that runs along the bottom of the engine.
The front side is connected to the Crankshaft by a chain, (on a boxster)
a chain in the front drives the right most cylinder head camshafts
the rear drives the left most cylinder head camshafts.
it rides on the IMS Bearing on the front which is held in place
by a bolt (which can fail) to a flange on the front of the engine.
The rear rides in a cavity in the block and also drives the oil pump.
When the IMS starts to lose the support on the front of the engine
by either having the bolt sheer or the bearings fail
it will still spin (to a point) damaging the far end of the IMS tube.
We were able to rebuild 2 IMS failures by replacing the tube (and a whole lot more stuff) -- But it is hit or miss depending on the damage done.
Last night my mechanic pulled a bearing from a 2001 Base 91K mile Tip.
It had an RMS leak -- but otherwise ran flawlessly.
If you look closely -- you can see the metal filings around the seal of this IMS Bearing assembly. It was just a matter of time before it failed.
There were no indications in the oil filter either.
After he finishes some other work -- I'll have him disassemble the bearing race and see what it looks like inside
Mike