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400F breather cover

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ozzybud:
They changed up some engine finishes between the 350F and 400F the valve cover on the 350F is polished and clearcoated. The 400F valve cover is painted  cloud silver.  The breather cover appears the be as cast with no finish whatsoever. Similar changes to the side case covers.

exvalvesetdabbler:
This is as close as I'm going to get.  Taken down to 2400 grit wet with just a dash of washing up liquid.

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Just curious, what would it look like if it was now  vapour blasted ? Would the texture lean towards a cast finish or look worse than it is already?  Basically I'm trying to get a uniform finish that isn't too mirror like.

Regards
Dave

Rayzerman:
Soda blasting may take that glossy look I see in your picture, or perhaps go back down to 2000 or 1500 grit.  A practice piece would be good to try it on.  Glass bead blasting will leave it rougher and flatter finish, and that's more intended to prepare it for paint.  The raw material will oxidize, so protect it with a metal polish like Autosol or Simichrome and likely have to repeat once or twice a year.

You could clearcoat it with a matte finish, again, a practice piece would be good to try that on.

exvalvesetdabbler:
This is a practice piece from a spare engine. Just trying out various finishes but seems to end up too shiny. Started off trying to see if I could remove a couple of scars and getting a reasonable finish and once you start .......

I'm probably going to have the sump vapour blasted over this winter because it is looking quite scabby.  I'll probly include this  as well and see how it turns out.  The one on the working engine had similar treatment and clear coat over 30 years ago but that yellowed quite quickly.  Last time around, this piece together with the rocker and tappet covers were sprayed with engine enamel and baked in the oven.

Regards
Dave

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