valve cover question

[rsporsche]

so i have a euro m30 b34 engine with a nice proper aluminum finish. its this style (but not polished or chromed)

i have been toying with the idea of doing a powder coated finish on a different valve cover. maybe black with polished or silver ribs + roundel - so this brings up a question, wrinkle or smooth? what have you seen that looked good on an injected engine? with a ceylon car, not going to go with a color other than black or silver tones. so the questions are
1. if i went with the e32 / e34 linear air filter housing, i could move the oil filler hole to the front with an original style cover ... any foreseeable issues?
2. what i don't like about the b34 type of cover are the 2 bosses that don't have anything connecting to them with the C tube intake - i could go to the e12 style

so what say my colleagues on the forum? what am i missing?

i had forgotten that there were so many versions of m30 valve covers
there is the early type with oil filler cap up front - problematic with e28 type air filter box (there is the small roundel and the bigger roundel)

the larger roundel type

the e12 type

the type used on the b34 / perhaps early b35

there is the late b35 style - too contemporary for a vintage car with C tube intake manifold IMHO

 

[e9Leveque]

I think that the wrinkle black with polished ribs looks good. When I did mine I first did a gloss black and it looked somewhat fake. I then did it as a very slight wrinkle and carefully used a sander to polish the ribs and roundel. Chrome could be nice but might be a little too bling-y against the Ceylon
I have my air cleaner off because I was dealing with something underneath it so you can see it in full glory. Close up for the wrinkle.

 

[bdigel]

wrinkle black
but my signature is wrinkle red

if you wana compre various finishes come by the shop I got a lot on the wall
polished, bare , wrinkle black and red

I think I figured there are about 5 different covers
two with the filler on the front large emblem and small
at least three with filler on the rear , the late 70s and early 80s with the emblem and then the B35 has its own

 

[ScottAndrews]

The E12, and E12 based E24 cover has the rear oil filler and the boss. The boss is where the aux air valve gets mounted. As I recall it was under the intake on the earlier E-12 based cars, so they wouldn't have that boss. So that's probably the one to use.

 

[rsporsche]

the air flow valve on @sfdon 's setup is on top of the intake manifold - doesn't need the boss on the valve cover

 

[ScottAndrews]

the air flow valve on @sfdon 's setup is on top of the intake manifold

That seems to be a D-Jet thing, since there is no AFM. On the E24, the inlet tube to the throttle body is two pieces and there's an air flow meter between them. The D-Jet uses a MAP sensor instead. The AAV gets mounted to that rectangular boss on the valve cover.

Here's an L-Jet engine with the AAV mounted on

the valve cover boss.

 

[rsporsche]

on megasquirt, there is no AFM - there is a 'charge' pipe that connects the air cleaner housing to the throttle body ... there is an air sensor in the pipe. other things in that area disappear as well.