Just a quick note, there is no reason to modify an engine cover to fit the plenum, I have the plenum, my engine cover fits fine. I think BillC may have something backwards with his 997S plenum install because there should be no reason to modify the engine cover. Just look at some of the 3.8L 997S motor installs into Caymans, they don't have modified engine covers, the plenum fits just fine.

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K-Man S
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No, I don't have anything backwards.

IIRC, the plenum you have installed is the IPD plenum, not the Porsche plenum. The IPD plenum is a different shape than the 997 3.8S plenum -- the IPD plenum is angled to the left, positioning the throttle body to clear the starter, whereas the 3.8 plenum puts the throttle body almost directly over the starter.

Now, since you brought it up, take a closer look at those 3.8S-into-Cayman installations -- you'll see that they are mounted lower than the stock Cayman motor. Scott Slauson confirms the use of lowering mounts in this post. Regardless of why they used the lowering mounts, those mounts also create more space between the throttle body and the cover (throttle goes on motor + motor mounts lower than stock = more space above throttle). That is why the motor swaps fit without any cover mod.

You had mentioned earlier that you already have a 3.8S plenum. Please try a quick test-fit installation. Just pull your IPD plenum, swap the throttle body over to the 3.8S plenum and try dropping it into place -- you'll see just how tight it is in there, and why I'm still wrestling with this.

wait and see

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Cayman GT
369BHP 325LBSTQ
313WHP 276WTRQ
some people like the regular stock factory look, cool people modify the car.

Well I've already thought of engraving a "logo" into the cover and Edge lighting it but there wont be many straight surfaces to do that, what do you have in mind "bigwing"

We need one more to make the minimum of ten people...Who's going to step up...??????

1. K-Man S - prefer option 1
2. Tess Tickle Option 1A
3. Spydr OPTION 1
4. Joe Twelve Pack - Option 1A
5. Suneet - Option 1a
6. besantini - Option 1A
7. Yellowdragon -1A
8. Sher - 1A
9.znitud 1A
10.......................????????????? could this be YOU

What is the price of this cover: It looks Great

Batman

See this post:
Clear Engine Cover - Group Buy Orders

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K-Man S
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I guess I should show off the newly designed CF intake cover on the S/C, so I guess I am in too.

1A for me

.

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Seat of the pants dyno
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1. K-Man S - prefer option 1
2. Tess Tickle Option 1A
3. Spydr OPTION 1
4. Joe Twelve Pack - Option 1A
5. Suneet - Option 1a
6. besantini - Option 1A
7. Yellowdragon -1A
8. Sher - 1A
9.znitud 1A
10 Bodhii 1A

Don't stop at ten - I will be in at 20.

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Completed: Softronic ECU; Quaife LSD; TPC Swaybars; Bilstein PSS9s; Das Schild; Aluminum Gas Cap; Softronic Plenum; RemoteKEY; Capristo Exhaust;

Planned: Mythical Long Delayed Clear Engine Cover
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; Blinging up the interior with Basalt Black