Brass radiator expansion tank

[Stan]

NMNA

$329.99 Hmmm wishful thinking?

Bmw E9 3.0cs 2800cs 3.0csi Alpina TurboCoolant Overflow Tank | eBay

<p>These are getting pretty hard to find this one seem to be a little deformed and could used some detailing on the bottom to clean up the solder mess, how ever the top and the whole this looks very nice as it’s polished brass. Oem bmw e9 resevoir used with listed flaws listed above , functional...

www.ebay.com

 

[eriknetherlands]

yeah, and it may not even hold pressure:
- I see no solder in the seam. looks like it was bead blasted out of there.
- the dent is also in a critical place:

 

[dave v. in nc]

Bead-blasted would explain the odd finish to a "polished brass" unit...I thought it was painted gold, sent the seller a question to that effect, he said no, its just the brass...
I also agree with Erik's pressure comments...

 

[Markos]

I had mine vapor honed (crushed glass + water). No issues with solder.

 

[Markos]

Not that I would pay $300+ for a dented one. You have a few options.

• split the tank and tap out the dent.
• Tap out the dent through the opening with a small brass jewelers hammer
• Solder on a brass/copper nail and pull the dent.
• Have a dentless repair person fix.