I finally got the engine out and here are some of the early results:
- carbon deposits (of course)
- oil leak at the oil pan sealing flange (base of oil filter), pooling into the V
- front engine seal may be leaking, or it could just be oil flowing from above
- base of oil separator is leaking
- worn accessory belt & roller, but the tensioner seems to be fine
- valve covers also show some signs of leakage
We still have to check the chain tensioners and the pre-cats for possible clogging. After that, it’s a full carbon clean, R&R oil separator, coolant pipe & seals for the 2 cyl blocks, accessory belt & roller, front crank seal, oil pan sealing flange, valve cover gaskets, valve seals and spark plug tube seals. We’ll also put in JHM intake spacers and replace the water pump/thermostat & engine temp sensor because it’s easy to do now.
Here are some pics
http://i.imgur.com/Qi1pJG0.jpg
http://i.imgur.com/Wot8CEd.jpg
leak at the oil pan sealing flange where the oil filter connects to the block. also mentioned in http://audirevolution.net/forum/index.php?topic=3703.msg107323#msg107323
http://i.imgur.com/ZqPKvyl.jpg
you can see the oil on the right side of the V, then flowing down the front, past the coolant pump.
http://i.imgur.com/4ya5hEH.jpg
not sure if the front crank seal is also leaking, but will replace
http://i.imgur.com/2ljf4bD.jpg
the bottom of the oil separator also showing signs of leakage
will follow-up with more later.