ISO 2.7 rebuild advice

[AnAnonymousParty]

Got an 86 325e. Transmission is removed to replace flywheel that lost it's crank position/timing sensor magnet pin. Will be replacing clutch. But, since I'm already halfway through the worst part of pulling the engine anyway, I'm considering going all the way. I've rebuilt more than a few motors out of domestic cars, this would be my first foreign, but I expect, mostly, "parts is parts" as they say. I've already talked to the shop where I usually get my machine work done and they gave me a warm fuzzy feeling about doing the work. Question is, are there any specific things I should keep in mind, tips and tricks to make the job easier/better. I'd appreciate any advice from anyone with experience. TIA.

[BMW Lover]

well im sure u kno, keep everything clean, new gaskits and stuff, torque the headbolts down correctly...i dunno wat else to say..lol

[BimmerKris]

shave off all eccess metal that you don't need. When i did mine, i shave everything, inside the intake, the center of the throttle body, the exhaust manifolds, anywhere that would restrict airflow. Shave the head, boost compression, i went 30thou, but you could go more if you wanted to. Have the whole head done, by a machine shop, cost me about 250, but it was better then new. Match all the gaskets to the openings, if the gasket doesn't cover the whole surface, shave the surface till it does. While your down there, strait pipe the exhuast. I put a hollowed out flowmaster right after the o2 sensor, then 2 1/2 inch pipe all the way back. It breaths like open headers and sounds pretty mean. I don't ever remember what else i did to the motor when we put it back together. The key is to make it breathe. These engines really need to breathe. My stock 325e is now faster then an E30is with just these simple things done. I'm pretty sure it's faster then my mom's e46 325 too. Close anyway.

[BMW Lover]

man fukin port the motor, go all the way since ur already there, get a guy to do it if u dont know how