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Pelican Technical Article:
Convertible New Top
Wayne R. Dempsey  

 
Time: 16 hrs
Tab: $650
Talent: 
Tools:
Torx driver set,
Applicable Models:
986 Boxster (1997-04)
987 Boxster (2005-08)
Parts Required:
New roof liner, weatherstripping
Hot Tip:
Install a new roof with the glass window upgrade
Performance Gain:
Ability to see out back
Complementary Modification:
Replace weatherstripping on roof
 
  

 This article is one in a series that have been released in conjunction with Wayne's new book, 101 Performance Projects for Your Porsche Boxster.  The book contains 312 pages of full color projects detailing everything from performance mods to changing your brake pads.   With more than 950+ full-color glossy photos accompanying extensive step-by-step procedures, this book is required reading in any Boxster owner's collection. The book is currently available and in stock now. See The Official Book Website for more details.
 

Check out some other sample projects from the book: 

Need to buy parts for this project? Click here to order!
  
     One of the common complaints of convertible owners is the condition of the rear window. It's manufactured out of a clear plastic, and as such, it does not have the longevity of a clear glass window. Over time and exposure to the elements, the window can become scratched, damaged, or faded. Unfortunately, on the Boxster, the window is sewn in as part of the roof, and there is no way to replace it sort of cutting it out and resewing a new one in, or replacing the entire roof. There is a new technique that I've been working on that would make the window replacement easier, but I'm not done testing it at this time: check the 101Projects.com website for more information on this in the future.

     The original Boxsters came with a plastic window: later ones were upgraded to include a real glass one. You can purchase a new roof that has a built-in glass rear window instead of the rear plastic window. I choose this route for my wife's Boxster (shown here in this project) because this car is kept outside almost all of the time, and sun exposure is terrible for the rear plastic windows. The glass window is fantastic, has perfect clarity, has the option for the rear defroster, and doesn't scratch like the plastic ones. The only downsides are that the actual window area is quite a bit smaller and the glass window slightly restricts access to the engine compartment when the convertible top is in the service position. These are two distractions I don't really notice very much.

     Replacing the roof is not an easy task: most roof manufacturers will not even sell the roofs to do-it-yourselfers. For this article I've divided up the process into a large picture array to try to give a better understanding of the steps involved. We took over 500 photos of the process: see the 101Projects.com website for the additional bonus photos not displayed here. The car shown here is a 1999 Boxster: other years are similar, but may have slight differences here and there.
Shown here is the glass rear roof upgrade for the early Boxsters that only had the plastic rear window.
Figure 1
Shown here is the glass rear roof upgrade for the early Boxsters that only had the plastic rear window. As you can see, the window is a bit smaller than the plastic version.
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Begin by placing the roof into the service position (see Project 3 for instructions).
Figure 2
Begin by placing the roof into the service position (see Project 3 for instructions).
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Remove the two front latches (green arrows), the screw that holds on the side seal (purple arrow), and the front retaining rail (yellow arrows).
Figure 3
Remove the two front latches (green arrows), the screw that holds on the side seal (purple arrow), and the front retaining rail (yellow arrows).
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With the attachment screws removed, pull down and remove the front convertible top seal.
Figure 4
With the attachment screws removed, pull down and remove the front convertible top seal. Inspect this seal carefully: you might want to replace it if it's old or damaged.
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Remove the seal retainer by removing the four screws shown here.
Figure 5
Remove the seal retainer by removing the four screws shown here.
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With the seal channel removed, you can access the support underneath.
Figure 6
With the seal channel removed, you can access the support underneath. Remove these small Phillips screws.
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With the screws removed, you should be able to lift up the front part of the convertible top.
Figure 7
With the screws removed, you should be able to lift up the front part of the convertible top. Much of it will be stuck to the frame with double-sided adhesive: peel it back slowly and carefully to avoid damaging the frame.
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The top is attached to a plastic channel piece that runs down the center of the car.
Figure 8
The top is attached to a plastic channel piece that runs down the center of the car. Remove the metal clip in the center that affixes the channel to the top.
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Pull back the top, and then you should be able to slide this channel piece off of the top (pull in the direction of the red arrow).
Figure 9
Pull back the top, and then you should be able to slide this channel piece off of the top (pull in the direction of the red arrow).
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On the top of the roof will be two aluminum pieces with a cable and spring attached.
Figure 10
On the top of the roof will be two aluminum pieces with a cable and spring attached. Cut away the plastic shrink wrapping and disconnect the cable from the end of the spring.
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With the cable removed from the spring, remove it from the end of the aluminum channel.
Figure 11
With the cable removed from the spring, remove it from the end of the aluminum channel. This cable is used to guide the top around the window frames when raising or lowering the roof, and is integrated / sewn into the roof lining.
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Taking caution not to damage the aluminum panels, cut them out from the old roof and place them on your workbench.
Figure 12
Taking caution not to damage the aluminum panels, cut them out from the old roof and place them on your workbench. You will be reusing these on the new top.
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Turn on the ignition and carefully lower the roof so that it's about 75% down.
Figure 13
Turn on the ignition and carefully lower the roof so that it's about 75% down. Remove the screw that holds the other end of the tensioning cable. This screw also secures a flap on the top, and the plastic slider. Be careful not to drop it into the recesses of the roof compartment, as it can be difficult to retrieve.
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There is a plastic slider piece that is attached to the top liner and held onto the frame with two plastic rivets.
Figure 14
There is a plastic slider piece that is attached to the top liner and held onto the frame with two plastic rivets. Using care, remove the rivets and squeeze the prongs from behind and pull the piece out of the frame.
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This photo shows the backside of the slider piece with the plastic rivet broken.
Figure 15
This photo shows the backside of the slider piece with the plastic rivet broken. It's very easy to damage this piece when removing it, but new ones are inexpensive at about $10.
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With the rivets detached from the frame, the slider piece can be removed from the top by peeling back the top material (yellow arrow) and sliding its groove out of the plastic retainer that is sewn into the top liner (green arrow).
Figure 16
With the rivets detached from the frame, the slider piece can be removed from the top by peeling back the top material (yellow arrow) and sliding its groove out of the plastic retainer that is sewn into the top liner (green arrow).
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Here's what the frame looks like after you have pulled out the plastic slider piece (arrows show the two pivot holes).
Figure 17
Here's what the frame looks like after you have pulled out the plastic slider piece (arrows show the two pivot holes).
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There are two Velcro straps (one on each side) that need to be loosened / disconnected.
Figure 18
There are two Velcro straps (one on each side) that need to be loosened / disconnected.
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Move the top back to its original position of about 18 inches open, and be sure that the ball-joint cable is disconnected (see <a style=color:000080 href=http://www.
Figure 19
Move the top back to its original position of about 18 inches open, and be sure that the ball-joint cable is disconnected (see Pelican Technical Article: Air Filter / Pollen Filter Replacement, Photo 2B). Lift up the rear of the top, and there will be a thick piece of weatherstripping that seals the trunk to the top. Carefully remove this seal, taking care not to rip it.
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Pull up on the weatherstrip channel located in the middle of the channel and remove it.
Figure 20
Pull up on the weatherstrip channel located in the middle of the channel and remove it.
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Pull back the roof material from the channel.
Figure 21
Pull back the roof material from the channel. You may find it easier to remove the locking strip first (see next photo).
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The yellow arrow points to the locking strip that holds the roof fabric to the channel.
Figure 22
The yellow arrow points to the locking strip that holds the roof fabric to the channel. Remove this strip.
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The last and final step in the removal of the roof is to slide it out of the channel that is attached to the middle bar of the roof frame.
Figure 23
The last and final step in the removal of the roof is to slide it out of the channel that is attached to the middle bar of the roof frame.
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Go over the Boxster frame carefully and remove all traces of double-sided tape and residue with a mild degreaser and isopropyl alcohol.
Figure 24
Go over the Boxster frame carefully and remove all traces of double-sided tape and residue with a mild degreaser and isopropyl alcohol. Also clean the two aluminum pieces that you removed from the original roof.
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Apply new tape to the aluminum pieces (3M 06384 recommended).
Figure 25
Apply new tape to the aluminum pieces (3M 06384 recommended).
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Poke holes in the new fabric (for the screws) and then affix the new fabric using the double-sided tape.
Figure 26
Poke holes in the new fabric (for the screws) and then affix the new fabric using the double-sided tape. Attach the cable to the spring, and wrap with some tape or heat-shrink tubing.
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Cut and bend flaps into place as shown and affix with double-sided tape (arrow).
Figure 27
Cut and bend flaps into place as shown and affix with double-sided tape (arrow).
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Take the two plastic sliders removed in Photo 16 and transfer them to the new roof liner.
Figure 28
Take the two plastic sliders removed in Photo 16 and transfer them to the new roof liner. Push each slider onto the liner in the direction indicated by the arrow.
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Install the new roof onto the frame, first sliding the middle part into the rear channel (as shown in <a href=# style=color:000080 id='In_text_23' onClick=PopUpMessage('In_text_23','images_small/Pic23.
Figure 29
Install the new roof onto the frame, first sliding the middle part into the rear channel (as shown in Figure 23). I suggest covering the rear window with some paper and tape to avoid accidentally scratching it during the installation process.
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Slide on the middle plastic channel into the new roof liner.
Figure 30
Slide on the middle plastic channel into the new roof liner. Use a light bit of silicone spray on the plastic piece if you're having a tough time getting this threaded.
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Affix the middle plastic channel to the frame using the metal clip.
Figure 31
Affix the middle plastic channel to the frame using the metal clip.
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Apply some 3M Super Weatherstrip adhesive to the channel, and then screw down the top liner using the sheet metal screws.
Figure 32
Apply some 3M Super Weatherstrip adhesive to the channel, and then screw down the top liner using the sheet metal screws.
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With the roof about 75% open, snap the slider pieces back into place on both the left and right sides, and reinstall the plastic rivet.
Figure 33
With the roof about 75% open, snap the slider pieces back into place on both the left and right sides, and reinstall the plastic rivet. On the roof that we installed, the new liner included a set of “helper straps” that needed to be affixed to this rivet. After the slider pieces are installed, reattach the roof cable using the screw removed in Figure 13.
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Move the roof back to about 18 inches open.
Figure 34
Move the roof back to about 18 inches open. At the rear of the car, measure the center of the window and the center of the rear channel and mark the liner and the channel so that you can line them up during the next steps.
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Apply double-sided adhesive tape to the rear channel in the same manner as it was when you removed the old top.
Figure 35
Apply double-sided adhesive tape to the rear channel in the same manner as it was when you removed the old top.
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Lining up the rear and making sure it's centered, feed the top material into the top of the rear channel.
Figure 36
Lining up the rear and making sure it's centered, feed the top material into the top of the rear channel. Keep the seam aligned slightly low along the edge of the rail, otherwise, the seam may be visible when the top is closed. Use a small rubber hammer to tap in the locking strip (shown with orange arrow).
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Reinstall the rear weatherstripping into the middle channel.
Figure 37
Reinstall the rear weatherstripping into the middle channel.
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Reinstall the thicker seal into the lower channel.
Figure 38
Reinstall the thicker seal into the lower channel. We used double-sided tape for this, but the seal repeatedly fell out when the roof was raised and lowered. Consider using the 3M Super Weatherstrip instead if this happens.
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Apply more tape to the front edge of the material, in the same places where it was on the old roof liner.
Figure 39
Apply more tape to the front edge of the material, in the same places where it was on the old roof liner.
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Pull the roof material tight and affix the front channel and seal into place.
Figure 40
Pull the roof material tight and affix the front channel and seal into place. Pull and affix evenly to avoid getting wrinkles in the top. If you installed a roof with the defroster capability, then plug in the connection as detailed in Photo 2 of Pelican Technical Article: Installing the Hardop and Installation Kit.
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See Bonus Photos
Bonus Photos
Looking for more photos? Click to see bonus pictures for this project.
Need to buy parts for this project? Click here to order!
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Comments and Suggestions:
DanComments: If you have a headliner 2001 do you have to remove it first? Does a new top usually come with a headliner or do you re-use your old one? thanks

Dan
May 10, 2012
 Followup from the Pelican Staff: The new top comes with most everything that you need, but there are a few small pieces and parts that are recycled. The headliner is typically included with new roofs. - Wayne at Pelican Parts
Dave from swedenComments: Mike. I am replacing my top these days. I had some problems when removing the sliders. First, two of the rivets were stuck like ****. When i squeezed the prongs, i could not get them out. The prongs at the lowest part of the sliders were the worst. I found it easier to get them out by using one hand on each side of the slider and with one hand pushing the prong and with the other hand shaking the slider gently to make the prong loose some tension from the hole. Try fo figure out where the preassure lies in the slider holes. It will make it easier. It makes sense why it seems stuck when reassembeling.
April 12, 2012
MikeComments: I have a 1999 Boxster. I have the old top almost off. I can not figure out how the sliders work or how to remove them. I have all 4 rivets out but I must have a mental block or something. Can someone provide me with a granular description of the process to remove the sliders after the rivets are removed.

The instructions 14 say "There is a plastic slider piece that is attached to the top liner and held onto the frame with two plastic rivets. Using care, remove the rivets and squeeze the prongs from behind and pull the piece out of the frame." The following pic 15 says it's of a broken rivet but shows broken prongs. I thought the rivets were the 4 pins that I already removed from the ends of the pieces with the prongs. I don't understand how to squeeze the prongs from behind and remove the piece. Which way do I move it and how? Help!!
March 10, 2012
owlComments: I have a 2003 boxster and the inner liner is detaching from the front portion of the top near the latch, it looks like thereis a plastic bow that has come loose an is warped, how do i repair this or reattach it?
January 8, 2012
bar10dahComments: Make CERTAIN the dealer gives you part 986.561.670.03 and 986.561.669.03 when you order the slides. My receipt says I got those two parts. The packaging of both those parts shows those part numbers. However, the pieces inside the packaging are 986.561.670.02 and 986.561.669.02, respectively. The difference is the correct parts have approximately a two inch inch extension on the section that connects to the convertible top. Appears this helps guide the top better.

Also, I really feel you don't need to replace the clamping pieces. 99% of the time, you're fine with just the slides. And as for the pins, probably don't need them, but they're cheap, so wouldn't hurt. These pieces takes four pins. Two in each slide.
October 16, 2011
 Followup from the Pelican Staff: Sounds like the -02 part numbers were older ones that they happened to have left on the shelf. The -03 ones are a later version. - Wayne at Pelican Parts  
bar10dahComments: left slide 986.561.669.03
right slide 986.561.670.03
right clamping piece 986.561.559.01
left clamping piece 986.561.560.01
pins 986.561.597.00 get 2

These pieces are for the 97-02 model. The 03 and up but don't know up to what year would require different clamping pieces: 986.561.559.02 and 986.561.560.02.

As of today, $17.02 for the slides, $12.16 for the clamping pieces, and $2.47 for the pins. Came to $63.30 for all of it.
October 14, 2011
 Followup from the Pelican Staff: Cool, thanks for the clarification. I will copy this to the Boxster forums as well for everyone's reference. - Wayne at Pelican Parts
2manyprojectsComments: I am having some trouble finding the part # for the slider pieces, can you help with this, 2000 boxster S
June 21, 2011
 Followup from the Pelican Staff: I've got the part numbers listed here in this thread: http://forums.pelicanparts.com/boxster-cayman-forum/538554-boxster-project-70-convertible-new-top.html - Wayne at Pelican Parts

Check out some other sample projects from the book: 

 

Got more questions?  Join us in our Boxster / Cayman Technical Forum Message Board or our Carrera 996 / 997 Technical Forum Message Board and ask a question to one of our many automotive experts.

Or, see what other questions readers have asked about this article...
 Applies to: 1997 Boxster, 1998 Boxster, 1999 Boxster, 2000 Boxster, 2001 Boxster, 2002 Boxster, 2003 Boxster, 2004 Boxster, 2005 Boxster, 2006 Boxster, 2007 Boxster, 2008 Boxster, 1999 Carrera, 1999 996, 2000 Carrera, 2000 996, 2001 Carrera, 2001 996, 2002 Carrera, 2002 996, 2003 Carrera, 2003 996, 2004 Carrera, 2004 996, 2005 Carrera, 2005 997, 2006 Carrera, 2006 997, 2007 Carrera, 2007 996, 2008 Carrera, 2008 997
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