Hello, I have some fairly technical questions about the M120 while I attempt to source one for a build. I have a line on a 97 S600 at the moment. I'll likely be developing a lot of parts during this build as the current aftermarket is either non-existent, or far too expensive.

1. Does anyone know the deck height of the block or the deck clearance of the pistons when installed? This would help tremendously with compression ratio calculations.

2. It appears the intake cams are reverse rotation being on the opposite side of the timing chain. Will an exhaust cam technically bolt in place of an intake cam? I don't need to be able to hook the chain up if so, I just need to know if it can physically go in place, with or without the cam gear, without any problems with oiling.

3. What is the length of the block, from front to back? I could also use measurements of the intake manifold of the intake runners closest to the flange, from the front of the furthest forward to the rear of the furthest back.

4. What is the valve angle on the heads?

6. Does anyone have physical measurements of the valves themselves? I think I've found valve diameter, but not length or stem diameter.

7. How strong are the crankshafts known to be? Can they handle a couple thousand more RPM than stock? Specifically the crankshaft, and none of the other rotating assembly. This would be the hardest part for me to find a suitable replacement for ($$$).

8. Are there any well-known issues I should be aware of in relation to oiling or cooling?