My '88 Fiero - The Never-Ending Saga

[GTRS Fiero]

Yeah.  I guess it can be drilled...

[Fierofool]

Drill it slightly under sized, slightly chamfer the hole,  lay your port sleeve on a block of dry ice for about 30 minutes, then quickly insert it.  Maybe put a little LocTite in the hole before inserting the port sleeve. 

[GTRS Fiero]

Just so it doesn't leak (or fall out).

Believe it or not, this was my color inspiration for the valve covers and intake:




For color comparison, here is mine:

[f85gtron]

If you've done the dawg mod, a straight nipple may not allow the house to fit any longer. When I did mine, I drilled and taped a hole, then screwed in a 90 or 45 brass fitting w/nipple to accommodate the hose.  I think that's the cgv rattle valve hose fitting

[GTRS Fiero]

I wonder if the hole could just be drilled on the side.

[GTRS Fiero]

So, my manifolds are painted black, and the bolts are gold.  Will this last, or just until the engine gets hot?

[Fierofool]

Unless it's some type of ceramic, it probably won't last.  I think even ceramic manifold coatings discolor to some degree. 

[GTRS Fiero]

Won't last, as in discoloration, or as in it will flake off, or...?

[GTRS Fiero]

Here is a stock valve cover, for comparison:


Here, with a porting mod, no EGR:


Here cut for a similar mod, but keeping the EGR:


My EGR port on the intake has been moved further down the neck and centered on the neck length, which effectively moved it further from the EGR.  We'll have to see if the EGR tube reaches without risk.

[Fierofool]

Ceramic, properly applied shouldn't flake.  It may discolor.  Raydar has had ceramic coating done.  He  may know.

The 3.4 EGR tube may be long enough for your mod.  Or get Rodney to fabricate a longer one for you.

[GTRS Fiero]

Rodney isn't really in the mood for Fiero parts, lately.

My manifolds are painted with header paint & primer.  What will the paint do?

[Fierofool]

The paint is designed for much higher temps than an intake experiences.  It's probably ok. Exhausts are the ones that may discolor.  I use high temp engine paint on intakes and valve covers without issues.

[GTRS Fiero]

My intake and valve covers are powder-coated.  My manifolds are painted.

[Raydar]

I'm thinking that, over time, the paint will dull (if it's not already) then will gradually burn off. It may flake a bit.
Ceramic coating (I generally get "near chrome") will dull out, over time, to a matte silver, but will retain it's insulating properties. i was able to eliminate all my exhaust heat shields, on my Formula, without roasting anything. (Left the shields on the SD4. But there was wiring *right behind* them.)
I don't have any good pics of the V6 stuff, but the SD4 was the most recent.
At this point, the tubes were already a bit "cooked". I had a bad carb (before I installed the Holley). Was running so lean that it turned a couple of the pipes red, even through the coating.


edit: I shrunk the image a bit to make the text more legible. - tshark

[GTRS Fiero]

So that was shiny red, originally?  The exhaust still looks good.

Off topic, but I just have to ask.  How many Fieros do you have, Raydar?

You had a 3.4.  You have a 4.9.  You have a silver or white car (my memory fails me).  You have/had an SD4?