Intake Manifold, Applicability and Color 914-6 Options

[DennisV]

On the 914-6 a couple intake manifold questions:

1. Would the same manifold be used for Weber IDTP and Zenith 40-TIN? They ones I took off our car had Zenith 40-TIN on them. I'm wondering if I can use the same for correct Webers. One version of the listed part numbers seems to match 1970 911 where Zenith were used. That seems promising.

2. Were they originally black? I've seen some restoration videos where people powder coat them black. Including the inside. Ours appear black. That said, I think they are magnesium. Why would Porsche paint these?

Thank you.

Photo as found on engine.

[Retroracer]

On the 914-6 a couple intake manifold questions:

1. Would the same manifold be used for Weber IDTP and Zenith 40-TIN? They ones I took off our car had Zenith 40-TIN on them. I'm wondering if I can use the same for correct Webers. One version of the listed part numbers seems to match 1970 911 where Zenith were used. That seems promising.

2. Were they originally black? I've seen some restoration videos where people powder coat them black. Including the inside. Ours appear black. That said, I think they are magnesium. Why would Porsche paint these?

Thank you.

Dennis - here is a good thread on these for reference, including some part number decoding:

http://forums.pelicanparts.com/porsche-911...-manifolds.html

to your questions:

1) Same manifolds can be used for Zeniths or Webers (40mm). Some variants have vacuum ports drilled so be careful to block those off if not used

2) Check the attached article, but most were coated from the factory with some form of black sealant - presumably to prevent the external surfaces of the magnesium corroding; however, I have never seen the inside runners coated - I would not trust any powder coat exposed to gasoline to NOT flake off and float gently down to the inlet valves....!

Hope this helps,

- Tony

[DennisV]

Dennis - here is a good thread on these for reference, including some part number decoding:

http://forums.pelicanparts.com/porsche-911...-manifolds.html

to your questions:

1) Same manifolds can be used for Zeniths or Webers (40mm). Some variants have vacuum ports drilled so be careful to block those off if not used

2) Check the attached article, but most were coated from the factory with some form of black sealant - presumably to prevent the external surfaces of the magnesium corroding; however, I have never seen the inside runners coated - I would not trust any powder coat exposed to gasoline to NOT flake off and float gently down to the inlet valves....!

Hope this helps,

- Tony

That's an interesting thread. Thanks Tony. I will check the part numbers on ours.

I did some more checking about the coating. Your logic makes sense to me. That said, Kurt from Classic Kats and Mike from Pierce manifold recommended powder coat. I don't have a better thought other than perhaps leaving them as they are.