I weighed stuff as I removed it, check out this thread...
http://forum.e46fanatics.com/showthread.php?t=971140
I would keep a close eye on the rod bearings. Oil analysis will tell you most of the story. According to a master tech and many other familiar with the S54 (non-internet types)...100k miles is typical for the rod bearings. My engine is being refreshed as we speak...102k on the clock. The internals looked good...just the bearings were shot. Preventive replacement before they knock will save you the pain of turning the crankshaft (engine removal). I've also learned that although the clearance spec is .003 - .007 that .006 is no good. Still got off lucky...spun 3 bearings!
For suspension, I'd recommend setting the height so there is no rake. You need all of the travel you can get in the front suspension. Typically, a well setup E46 tucks the rear wheels and has fender gap at the front wheels. When you put it on the scales I'm willing to bet that you'll be pretty damned close to 50/50 cross weights. Many will say no but a little toe out in the front will give the car a crisp turn in and makes it easier to rotate the car (I didn't say oversteer). But I wouldn't do this if you run on tracks that have really long straights as the toe out will heat up more and increase wear.
Quote:
Originally Posted by ThunderMoose
I bought an E46 M3 last January as dedicated track car. BigJae and I counted a dozen former/current E9X M3 fellow trackers that have went to the E46M3 platform for the track, in last 2 years in our little circle.
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You were the first E46 M3...but I was the FIRST E46!