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Author Topic: 3.4L V6 Block Teardown Pt.5  (Read 3256 times)
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Wolfy1969
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« on: June 30, 2011, 09:49:53 PM »

This next section of pics will show the complete teardown of the block to find out what happened internally to this engine.  We start here with the engine upside down in an engine stand and the main bearing caps off:



Some shots of the crank journals that were under those caps.  To my untrained eye, things look definitely worn and tired, but nothing so far looks catastrophic:

#1:


#2:


#3:


#4:


The main bearing caps laying on the floor.  It is imperative that you keep these in the exact same order, orientation, direction and with the same bolts in the same holes when you re-assemble the block!!!!  Mark these parts in some way so there's no mistaking what goes where..  For the caps themselves, there's some things that will help.  First, the only 2 caps that are identical are the middle two ones.  The front and rear caps are totally different.  The main cap also has a "1" stamped in it with an arrow that points to the front of the engine...The middle two have the arrow as well as a single dot stamped in them all on the same side of the cap...the rear cap is obvious - it only fits in one spot and in one direction.



Bearings under the caps...

#1:




#1 & #2:


#2 & #3:


#4:


Again, the journals where those caps were...

#1:


#2:


#3:


#4:


Pulling off the rear main crankshaft seal...if you ever hear a mechanic say you've got an oil leak from your rear main seal, this is what he's talking about:





Flip side:


So, with the caps and rear main seal off, we're at this point:























































































































































 



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