Be sure you have all the parts before you take things apart.....
I took the day off yesterday to get the tranny off the car and then take my time this weekend putting it back together so, I wouldn't have to rush.
I learned that the thickness of the OEM dual-mass flywheel is almost 3/4" more than a LWFW. The OEM flywheel bolts are about 45mm long and the ones I need are 25mm long. So now my car is sitting in the "wheelie" position until I can get some of these extremely rare bolts shipped to my house.
Just to give some of you an idea of how rare these bolts are, I have a neighbor that works for Fastenal. A very large hardware/tool company (they supply that show Monster House on Discovery Channel). Anyhow, we drove to the warehouse he works at to get some new bolts for my flywheel (mind you that this is a huge warehouse with about $20 million in hardware stacked on shelves about 25 feet high) and they didn't even have a single bolt in that type of thread pitch or hardness...
I come to find that the OEM flywheel bolts are 10mm x 1.0 pitch (very fine pitch) and they are rated for Grade 12.9!!!!
Bolt grades range from lower numbers like 4.6 up to 12.9. Grade 8.0 - 8.8 is typically used for exhaust components or cylinder heads but, in this type of application, all the engine's torque is being channeled through these bolts so they must be as hard as possible or they will snap or bend over time.
So the lesson of the day is that if you ever buy a lightweight flywheel, ALWAYS get the bolts that are made for it to fit your car.....
Or, you too will have an A4 doing a "wheelie" in your garage for quite a while.
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