Is this an adjustable BOV or external Wastegate? (from a Mercedes)
 

I recently added this to my collection of parts in the garage. its off an 82 Mercedes but Im not sure if its an adjustable BOV or an external wastegate. The turbo was already gone so I never got a look at it. I think its a BOV just with an adjustment nut on top. Where that blue spot of paint is on the top is the adjustment nut.
Thanks for the help.

Re: Adjustable BOV or external Wastegate? (from a Mercedes)
 

looks more like a wastegate to me. Solid, iron and carbonated.

Re: Adjustable BOV or external Wastegate? (from a Mercedes)
 

Gotta love the carbonated wastegates, they are fizzier than the regular ones.

Re: Is this an adjustable BOV or external Wastegate? (from a Mercedes)
 

:8

Re: Is this an adjustable BOV or external Wastegate? (from a Mercedes)
 

w/g fo sho

Re: Is this an adjustable BOV or external Wastegate? (from a Mercedes)
 

i think it's a EGR valve. what are IDs of inlet and outlet?

Re: Is this an adjustable BOV or external Wastegate? (from a Mercedes)
 

The long piece measures 1" and the carbon coated piece (with the 2 mount holes next to it) measures about 3/4"

Re: Is this an adjustable BOV or external Wastegate? (from a Mercedes)
 

definately a WG. Was the other end conected to the exhaust when you took it off?

Re: Is this an adjustable BOV or external Wastegate? (from a Mercedes)
 

defiantly a WG. my dad has on of those old turbo diesel Mercedes, with the same WG.

Re: Is this an adjustable BOV or external Wastegate? (from a Mercedes)
 

Yes the bottom was connected to the exhaust manifold when i found it.
Thanks for all the helps guys.