Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Correct color for 85 manifold powdercoating?

Thread Tools
 
Search this Thread
 
Old 12-05-2008 | 10:52 AM
  #1  
Incendier's Avatar
Incendier
Thread Starter
Rennlist Member
 
Joined: Aug 2001
Posts: 502
Likes: 0
Default Correct color for 85 manifold powdercoating?

Searched but did not find...

Anyone know the correct color designation for duplicating the factory color in powdercoat (1985 US S).

Friend is doing a restoration and doesn't want to go red/blue/pink, just straight-up factory color match.

Failing that, a good color picture of an original manifold?

Thanks much.
Old 12-05-2008 | 10:57 AM
  #2  
dr bob's Avatar
dr bob
Chronic Tool Dropper
Lifetime Rennlist
Member
 
Joined: Oct 2001
Posts: 20,506
Likes: 549
From: Bend, Oregon
Default

IIRC, the factory manifolds have no finish on them from the factory. A local here did his in "chrome" powder, really a bit closer to black chrome appearance, but understated and very tasteful looking. The later manifolds (S4+) were done in Zermatt Silver, pretty much the same color that's used on the painted cup wheels. That color has a very fine almost invisible flake in it. Your cam covers were that color, so it might be appropriate to do the manifold the same if you are doing the covers at the same time.
Old 12-05-2008 | 11:02 AM
  #3  
Incendier's Avatar
Incendier
Thread Starter
Rennlist Member
 
Joined: Aug 2001
Posts: 502
Likes: 0
Default

Thanks.

If they weren't originally finished, then we have a funny PO trick at work - there is paint flaking off of the manifolds, cam covers, and oil filler, with gray primer underneath.

Subtracting age-yellowing and oil-staining, though, the Zermatt Silver may be a winner.
Old 12-05-2008 | 11:27 AM
  #4  
Mike Frye's Avatar
Mike Frye
Craic Head
Lifetime Rennlist
Member
 
Joined: Sep 2006
Posts: 8,795
Likes: 6
From: Jersey Shore, USA
Default

They were not PC from the factory, it was paint with primer underneath. Very thick paint to hide low quality castings. If you strip it you'll need to use some filling primer and/or really thick paint again. PC will show the casting imperfections quite a bit.

I think Jim B. could help you with the color, I seem to remember him chiming in on this once. I don't know the original color but in most cars it has yellowed quite a bit so a recent pic won't help much.

Also, they're magnesium, so be careful with media blasting, I think you have to use walnuts or something, sand is no good. And you have to seal them right away because bare magnesium will start to oxidize instantly. I may be getting the terms wrong, but some searches will turn up lots of info on this.
Old 12-05-2008 | 11:56 AM
  #5  
Incendier's Avatar
Incendier
Thread Starter
Rennlist Member
 
Joined: Aug 2001
Posts: 502
Likes: 0
Default

...and that's exactly what I needed to know and see. Thank you all.
Old 12-05-2008 | 12:03 PM
  #6  
Mike Frye's Avatar
Mike Frye
Craic Head
Lifetime Rennlist
Member
 
Joined: Sep 2006
Posts: 8,795
Likes: 6
From: Jersey Shore, USA
Default

Originally Posted by Shane
Here is what the engine looked like new...
OOHHHH SHINY!!!


Dude, look at all that brass hardware. That has definitely got some extra bling on there for the photo op.
Old 12-05-2008 | 01:05 PM
  #7  
SeanR's Avatar
SeanR
Rennlist Member
 
Joined: Apr 2006
Posts: 35,700
Likes: 503
Default

Do yourself and anyone who is working on the car a favor. Make sure they DO NOT powder coat the mating surfaces where the intakes connect to the heads.
Old 12-05-2008 | 01:14 PM
  #8  
Jim bailey - 928 International's Avatar
Jim bailey - 928 International
Addict
Rennlist Member

Rennlist
Site Sponsor

 
Joined: Jul 2001
Posts: 11,542
Likes: 3
From: Anaheim California
Default

That is how ALL the new engines looked ! We have had several over the years all bright and shiney ! And yes silver is the intake color but the paint used yellows from engine heat , burn cars get even darker
Old 12-05-2008 | 02:00 PM
  #9  
SteveG's Avatar
SteveG
Rennlist Member
 
Joined: Jul 2001
Posts: 6,519
Likes: 99
From: New York
Default

I wonder what is up with that P/S pulley? Quite different from mine.
Old 12-05-2008 | 02:14 PM
  #10  
Mike Frye's Avatar
Mike Frye
Craic Head
Lifetime Rennlist
Member
 
Joined: Sep 2006
Posts: 8,795
Likes: 6
From: Jersey Shore, USA
Default

Yeah, and why tuck that coolant line back up in between the intake runners? Mine doesn't go like that. *scratches head*

How about that tube that comes down around the dipstick. What's that for?
Old 12-05-2008 | 02:21 PM
  #11  
Earl Gillstrom's Avatar
Earl Gillstrom
Addict
Rennlist Member

 
Joined: Jul 2002
Posts: 510
Likes: 1
From: Glen Mills, PA
Default

Eastwood sells Argent Silver powder that is close to original but has to be clear coated.

Columbia Coatings sells Silver Polyester that looks the same but does not require clear coating.

As stated by Bob, you must pickle before coating.
Old 12-05-2008 | 02:31 PM
  #12  
Jim bailey - 928 International's Avatar
Jim bailey - 928 International
Addict
Rennlist Member

Rennlist
Site Sponsor

 
Joined: Jul 2001
Posts: 11,542
Likes: 3
From: Anaheim California
Default

The loose hose ends have been tucked back into the engine that PS pulley IS weird using a toothed belt like the timing belt.
Old 12-05-2008 | 05:20 PM
  #13  
M. Requin's Avatar
M. Requin
Rennlist Member
 
Joined: Mar 2007
Posts: 3,627
Likes: 60
From: Central Virginia
Default

Photo model, IMHO, so "cleaned up" for the shoot.
Old 12-05-2008 | 05:34 PM
  #14  
PorKen's Avatar
PorKen
Inventor
Rennlist Member

 
Joined: Sep 2002
Posts: 10,175
Likes: 412
Default

That's not brass, it's zinc plate with a yellow chromate. It's what I plate the PKsn'r brackets with. It's pretty thin, and turns silver after a while with heat.

I wondered about that PS pulley (I think that's my scan from a '86 brochure). I think it's a overrun clutch, which disengages when you lift off the throttle. They must have deleted it on production engines.
Old 12-05-2008 | 06:14 PM
  #15  
dr bob's Avatar
dr bob
Chronic Tool Dropper
Lifetime Rennlist
Member
 
Joined: Oct 2001
Posts: 20,506
Likes: 549
From: Bend, Oregon
Default

Sorry for the misleading misinformed post back at 2. I was thinking that we were discussing the earlier manifold rather than the one shown in Shane's picture.

That yellow on the brackets is typically cad or yellow zinc plating. You can pull all those brackets off and have them replated to restore the original look. The zinc is a sacrificial, a form of cathodic protection on the steel parts to prevent corrosion. Looks really nice when it's new like the picture shows. I thought mine looked OK until I saw that picture, now all those metal bits will have to be refurbed as part of the winter intake refurb project. And I was thinking I'd just do a quick repaint on the manifold and cam covers. Yeah right...



Quick Reply: Correct color for 85 manifold powdercoating?



All times are GMT -3. The time now is 05:54 AM.