How to clean factory pipe chamber?

[Stefanko135]

I swear there was a thread on how/what to use to remove the water spots on a factory pipe chamber but after searching found nothing. So what is everyone using? Limited pipe was new 2 years ago and can't seem to get those hard water spots off. I have tried water and vinegar I believe I mixed up before but still nothing.

 

[smoofers]

At this point I'm pretty sure the paint on the pipe is damaged. Mine was the same way. They're permanent at this point until you either blast and recoat or polish and clear.

 

[squiggy_bum]

This is what I use to degrease and remove water spots in my engine bay and pipe especially. It’s made by Walt’s Polish in Santa Ana. Works super good. Can’t use it on paint or vinyl because it’s too strong.

 

[Mike75]

Purple power From autozone worked good on my ski

 

[kevbo]

Purple Power or Castrol super clean is very caustic and will horribly etch most aluminum. Its works great to decarbon the inside of a pipe. Simple Green is mild enough for most bare aluminum.