Cayman or 987 Boxster engine cover on 986 Boxster

[thstone]

Here is the install....

First, the screws and captive nuts that I listed earlier don't match so I ran to the local hardware store and bought 8mm cap bolts that worked fine with the above listed captive nuts.

The install was very easy. Simply remove the old cover and remove the quick release captive nuts using a small screwdriver (they are tight but just pull off). Then push on the new captive nuts, install the metal cover, and install the bolts. I used a screwdriver to align the new captive nuts with the cover holes to make it easy to start the bolts.

The old composite engine cover weighs 7.8 lbs; the 987 metal engine cover weighs 4.0 lbs for a savings of 3.8lbs.

The 986 carpet cover fits over the 987 engine cover but the slightly larger hump in the 987 cover can be seen if you look at the photo carefully. I'm not sure if the rear compartment/speakers could be installed or not.

New bolts from hardware store...


Old captive nut...


New captive nut installed...


986 cover (left) vs 987 cover (right)...






Final install...

[Boxtaboy]

Nice clean install. Thx for posting.

[jaykay]

Originally Posted by Boxtaboy

How do 987 owners get their speaker boxes on?...are they different?

I had a quick look at the 987 cover and it looked like that one would have to trim the rear bottom edge of the speaker box to make it sit properly...this assuming the front pegs line up

I did a bit of snooping around for some 987 speaker box pictures and managed to fine this one which appears to show this very feature in a factory 987 box.

Perhaps someone with a 987 could post a 1:1 template that would serve a pattern for 986 speaker box modification...and dremel away

[jaykay]

Originally Posted by jaykay

I had a quick look at the 987 cover and it looked like that one would have to trim the rear bottom edge of the speaker box to make it sit properly...this assuming the front pegs line up

I did a bit of snooping around for some 987 speaker box pictures and managed to fine this one which appears to show this very feature in a factory 987 box.

Perhaps someone with a 987 could post a 1:1 template that would serve a pattern for 986 speaker box modification...and dremel away

[jaykay]

Originally Posted by jaykay

you can just barely see the cover hump relief feature on the rear bottom edge. perhaps someone with a 987 could confirm.

[Boxtaboy]

Ah yes, I see the cutout. Interesting. It also looks like the carpet does need to have some insulation shaved off because the receivers for the speaker box don't look like they stick out enough.

[jaykay]

Hey Tom,

Can you repost this? Photo bucket has eaten all of your images. Are the porsche 987 captive nuts that are clipped to the engine bay tabs M8 or M6?

Originally Posted by thstone

Here is the install....

First, the screws and captive nuts that I listed earlier don't match so I ran to the local hardware store and bought 8mm cap bolts that worked fine with the above listed captive nuts.

The install was very easy. Simply remove the old cover and remove the quick release captive nuts using a small screwdriver (they are tight but just pull off). Then push on the new captive nuts, install the metal cover, and install the bolts. I used a screwdriver to align the new captive nuts with the cover holes to make it easy to start the bolts.

The old composite engine cover weighs 7.8 lbs; the 987 metal engine cover weighs 4.0 lbs for a savings of 3.8lbs.

The 986 carpet cover fits over the 987 engine cover but the slightly larger hump in the 987 cover can be seen if you look at the photo carefully. I'm not sure if the rear compartment/speakers could be installed or not.

New bolts from hardware store...


Old captive nut...


New captive nut installed...


986 cover (left) vs 987 cover (right)...






Final install...

[Quadcammer]

Ive done this after my engine swap. M6 screws and speed nuts

[jaykay]

Okay thanks, it looks like the Porsche speed nuts are M8 though. Where did you source your M6s? Did they fit the engine bay tabs well?

[thstone]

Originally Posted by jaykay

Hey Tom,

Can you repost this? Photo bucket has eaten all of your images. Are the porsche 987 captive nuts that are clipped to the engine bay tabs M8 or M6?

Sure, I'll update the photos tomorrow... (there is a nice warn corner of hell reserved for the folks at Photobucket)

[Quadcammer]

Originally Posted by jaykay

Okay thanks, it looks like the Porsche speed nuts are M8 though. Where did you source your M6s? Did they fit the engine bay tabs well?

thats odd. My factory retaining bolts were m6. I ordered the speed nuts on amazon.

It really doesn't matter. M6 or m8 speed nuts will work fine, just obviously be consistent.

[Deadeye]

I was able to remove the twist pock fasteners from the boxster lid and move them to the Cayman lid. Requires popping the star washers off the twist lock pin and reusing them. Not difficult.

[tlc356]

My 2005 has the Bose system and the speaker sits on top of the carpet on top of the engine aluminum cover.