r/BMWF30

I am flex honing a BMW N55 engine block that I am rebuilding ahead of installing a new set of OEM piston rings (keeping same pistons) because my understanding is that the new rings will not seat properly on glazed cylinder walls. I’m using a 320 grit silicon carbide hone.

Thankfully, I have a used block to practice on before honing the block I am rebuilding.

I’m using 10W-30 oil per the instructions and trying to achieve ~100 strokes/minute at a setting of 500-800 rpm.

It’s hard for me to tell if my cross hatching looks like it should. I know it’s supposed to be at a 45 degree angle, but this looks a little flat to me even though it looks similar to the remaining cross hatching I can still see in the unhoned cylinders.

How am I doing? Any constructive feedback would be appreciated. I have 3 other cylinders to practice on.

What is a realistic number to pay for a transmission service at a shop in New York given that the kit is 275 from fcp

I AM DOING A SMOKE TEST IN THE VIDEO, just wanted to know where the smoke is coming from to find the boost leak
My car is a 2015 335i EWG, I noticed spongy throttle and the CEL with the codes P12A4
Manifold Absolute Pressure Sensor 'A' After Running Diagnosis Pressure Too Low

Looking at the video , Where is the leak

Btw I am doing a smoke test in the video

My hood and trunk currently look like this. The doors seem okay. The car looks beautiful and clean when washed but it doesn’t last. What is the best way to DIY this and get significant improvement and bring this black paint back to life? Not looking for a show room kind of style but something to bring significant improvement.

Would really appreciate anyone insight into this, I’m willing to spend around £600 for the lights, and would preferably like them to require no coding or only require coding in Bimmer code if possible