Patcon

where will the next gen system get fresh cabin air?

Nissan still sells most of the rubber bushings with a few exceptions that are NLA

Yes, I agree. Deal with a smaller rebuilder. Ask for your original back, no exchange

If you show oil pressure. .. I would experiment with heavier oil 15w40 or 20w50 If the sound gets better it's a bearing issue. If it goes away, run the heavier oil until it breaks or you're ready for a rebuild

If the booster's bad, what is the problem with sending it in to be rebuilt?

Has oil pressure been confirmed at the block? What oil is in the engine? Is there sufficient oil in the engine?

I'll try to remember to do that when it get's here

Ahh, Z4 M roadster. The ever sexy S54 engine! I bought a 3.0Si today

I was asking the next Obvious question, sort of for posterity's sake

What are the ramifications of not having those components?

Holes have to be welded closed. That requires paint. I suspect there is a source for new rubber but don't know where

They are riveted on. there will be 4 or 5 rivets in each piece under the rubber

Yes, do save the tip. They are NLA

I think that's not recoverable

You could always take the door to the paint shop. Have them scan it and see which formulation the scan is closer to

I would go with Bumper Automobile I believe

Slow poke! Its 5 o'clock somewhere! 😉

Been there; done that! 😞

Cerium oxide is the traditional method but I routinely polish glass for Cody's car with paint cutting and polishing compounds. Works good, but wont remove the really deep scratches

Why did you need to switch tanks for the LS swap? Thats an EFI tank. Are the lines not large enough?

If I were gonna try this, I would scrape a small area with a razor blade and then polish the glass with something like meguiars mirror glaze on an electric buffer

Five years thats SOP. It takes that long to come to the top of the "todo" list

I knew it would be a trek for CO but I was hoping he knew somebody closer to the car since he was semi local

@Captain Obvious

I agree, that sounds like a clearance noise. Start with valve lash first Then record again