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Join Date: Apr 2025
Location: NorCal Foothills
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My Cylinder air guides don’t look right…

Every manual and book that I have shows a different arrangement than the guides that I pulled out of my engine.

I have a 1985 3.2 that appears to have never been taken apart before I started my tear down.

All of my guides have cut outs, including all 4 of the corner pieces.

The corner guides: one set of two is cut differently than the other set of two.

All of cut outs are punch cut with perfectly rounded inside corners, so I do not think that they have been modified by anyone.

Do I have two wrong air guides, or is this the right set up for my engine? If I do have the right guides, I am not sure which corners go where!

Any input appreciated.

Thanks, Dave



Here are just the four corners:

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Dave
Project: 1985 Porsche 911 Carrera Coupe 3.2 to 3.4L "Carina"
PCA Member- Sacramento Valley region
Old 10-04-2025, 12:26 PM
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That kind of looks like yours.

Old 10-04-2025, 02:09 PM
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Hi
Think the link below will help you understand the factory air guide modification for 1964 to 1977 engines:
(Production equivalent embodied on later engines like yours.)
Cheers
https://www.klassikats.com/techincial-service-bulletin-center-air-guide-1964-77-911-930/

Last edited by Magyar Kiwi; 10-04-2025 at 02:27 PM..
Old 10-04-2025, 02:18 PM
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What you have is correct. The works drawing has the blades going showing both sides of motor.
The 1 inch cutout on the centers goes to the outside, the notched ends go against the case.
Bruce

Last edited by Flat6pac; 10-04-2025 at 03:21 PM..
Old 10-04-2025, 03:19 PM
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Thanks guys- the Bentley manual and Wayne’s book must have been showing the older style. Everything I was looking at had one of the end guides with no cut-out.

Huge relief!
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Dave
Project: 1985 Porsche 911 Carrera Coupe 3.2 to 3.4L "Carina"
PCA Member- Sacramento Valley region
Old 10-04-2025, 05:37 PM
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Quote:
Originally Posted by SlateBlueTarga View Post
That kind of looks like yours.

Yes, that is exactly what I’ve got. I need to get an ‘85 service manual…
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Dave
Project: 1985 Porsche 911 Carrera Coupe 3.2 to 3.4L "Carina"
PCA Member- Sacramento Valley region
Old 10-04-2025, 05:42 PM
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You won’t ever forget the sequence now…
Bruce
Old 10-05-2025, 07:49 AM
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Quote:
Originally Posted by Flat6pac View Post
You won’t ever forget the sequence now…
Bruce
Got that right!

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Dave
Project: 1985 Porsche 911 Carrera Coupe 3.2 to 3.4L "Carina"
PCA Member- Sacramento Valley region
Old 10-05-2025, 11:54 AM
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