Lower Inlet - injector seats

[haimsey]

Planning on cleaning up and painting this RS stamped lower inlet manifold.
Does the injector seat look too crusty? All the others look fine, just one that doesn't

 

[R3k1355]

Yup

Send it for Vapour blasting, will probably look like new when done.

 

[haimsey]

Gave it a gentle rub with a fine scotch of pad and some of it came away. How vital is that face to the injector seating correctly?
Anything that can be done at home?

 

[Krarl]

Best thing is to get a bottle brush and proper scrub and twist it into the ports. Or go gentle with a brass wire brush to get the harder deposits off