Noob M30B35 Build

[Smileyboy]

Got it. Thx for the help!

[tig]

Heh. Now assembly can finally begin. Will get started sometime next week...

I never posted this to this thread, but was reminded recently that lots of folks don't realize that what I did here is actually not a great idea.

Specifically, I zinc plated pretty much everything I took off the donor motors. Even nuts and bolts that were not previously CAD plated by the factory.

The plating process (chrome, zinc, CAD, it doesn't really matter) has a negative metallurgical effect, especially on hardened steel (like crank hubs and all those nuts and bolts that were black from the factory).

For most of what I had plated above it's not a big issue because the torque values are relatively low and the original fastener was not hardened. But subsequent to this I've taken a more cautious approach. Given what I spent on this build, I would have been better off buying new fasteners. The motor is still running like at top at ~25k miles but I still worry regularly that it's going to esplode on me because I was much more stupid back then than I am now.

See this for more info:


https://www.bing.com/images/search?view ... ist=0&vt=0

[Shadow]

so i guess baking them at 400f for a time fixed this yes?

That oil report is pretty amazing my maxima has slightly elevated bearing wear on pensoil platinum so
they recommend i change it every 4,500k even though the oil can go much higher.

m30 is a great motor.

[ahab]

Beyond that, the official BMW factory torque spec guide cautions about lowering torque specs on hardware that has been plated. Everyone should be aware of this, especially people building engines and plating critical components, like crank hubs for example.

[GH0S7]

I just spent the past few hrs studying every page of this thread top to bottom. Simply amazing documentation. Thanks for taking the time to post and share this with the community!

[tig]

Another oil analysis. At 26,142 miles (3,703 miles on this change.)