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Thread: GT4 front bumper for 981S?

  1. #241
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    Re: GT4 front bumper for 981S?

    more pictures...
    Attached Thumbnails Attached Thumbnails GT4 front bumper for 981S?-img-2726-jpg   GT4 front bumper for 981S?-img-2727-jpg   GT4 front bumper for 981S?-img-2730-jpg   GT4 front bumper for 981S?-img-2734-jpg   GT4 front bumper for 981S?-img-2737-jpg  

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  3. #242
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    Re: GT4 front bumper for 981S?

    That looks great! What a true score finding it already painted in your factory color.

    I, as well, did not add the 3rd radiator and painted the tub portion black in front of the lower center opening. As for the upper vent, I painted the ac lines black (in addition to the bumper reinforcement bar) and left out the foam pad entirely. This gave a little better look when viewing from the top. To save a little bit of money (more like $700), I fabricated the mesh inserts with a very similar diamond patter for a total of 15 bucks. I would go ahead and recommend the OEM radiator air ducts, as they where one of the least expensive pieces for only around $50.

    Overall, a very satisfying project. I found it was the little bits that ran up the tab, but would totally do it again.

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    Re: GT4 front bumper for 981S?

    Quote Originally Posted by jsm987 View Post
    That looks great! What a true score finding it already painted in your factory color.

    I, as well, did not add the 3rd radiator and painted the tub portion black in front of the lower center opening. As for the upper vent, I painted the ac lines black (in addition to the bumper reinforcement bar) and left out the foam pad entirely. This gave a little better look when viewing from the top. To save a little bit of money (more like $700), I fabricated the mesh inserts with a very similar diamond patter for a total of 15 bucks. I would go ahead and recommend the OEM radiator air ducts, as they where one of the least expensive pieces for only around $50.

    Overall, a very satisfying project. I found it was the little bits that ran up the tab, but would totally do it again.
    Yea, The OEM mesh is WAY over priced. I would of fabricated the mesh inserts if I didn't find the used set from Justin. That will definitely save you some $$. Totally agree, the little bits add up quick. I'll eventually order the OEM side radiator ducts when I do the third radiator but for now I'm happy with the result. Changes the look of the car completely!!

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  6. #244
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    Re: GT4 front bumper for 981S?

    Anyone have trouble lining up the front undertray? I have an oem gt4 undertray and front bumper but after bolting the 3 bolts to the chassis, I can’t get the holes on the front to line up with the bumper.

  7. #245
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    Re: GT4 front bumper for 981S?

    Quote Originally Posted by smellslikecurry View Post
    Anyone have trouble lining up the front undertray? I have an oem gt4 undertray and front bumper but after bolting the 3 bolts to the chassis, I can’t get the holes on the front to line up with the bumper.
    We come to the forum, a 981S? Cayman or Spyder? A picture would be very helpful...

    With the correct bumper/tray and front inner fender liners everything will bolt in, do you have all of these, what is the part number of the tray?
    2016 BGTS since Sept 8th, 2015! Previous rides:
    2013 Boxster 981-S
    2006 Boxster Base
    2003 Boxster Base "First convertible"
    1990 RX-7 "Rotary Rocket"/ 1988 Z51 Corvette/ 1975 280Z

  8. #246
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    Re: GT4 front bumper for 981S?

    I did take apart mine 4 times and put it back and never had an issue. This was with floor jack and no lift. Share some more info.
    Quote Originally Posted by smellslikecurry View Post
    Anyone have trouble lining up the front undertray? I have an oem gt4 undertray and front bumper but after bolting the 3 bolts to the chassis, I can’t get the holes on the front to line up with the bumper.
    RY CGTS

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    Re: GT4 front bumper for 981S?

    981 cayman s. Part number is 98150460180. Will get some pics later. It’s off by a couple of mm. I don’t have the front inner liners and as expected those don’t line up with the tray. My main issue is with the tray and the front bumper.

  10. #248
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    Re: GT4 front bumper for 981S?

    Quote Originally Posted by smellslikecurry View Post
    981 cayman s. Part number is 98150460180. Will get some pics later. It’s off by a couple of mm. I don’t have the front inner liners and as expected those don’t line up with the tray. My main issue is with the tray and the front bumper.
    That is the same part number I used... not to knit-pick but " a couple of mm" is not out by much, I found the best way to install these parts was to install the bolts but leave them loose so everything can be moved into position, then go back and snug them up.

    I regularly take this all apart to clean the center radiator and front condensers, never had a problem with the method I describe.
    2016 BGTS since Sept 8th, 2015! Previous rides:
    2013 Boxster 981-S
    2006 Boxster Base
    2003 Boxster Base "First convertible"
    1990 RX-7 "Rotary Rocket"/ 1988 Z51 Corvette/ 1975 280Z

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    Re: GT4 front bumper for 981S?

    I'm trying source parts to install a CSF third radiator and was wondering if you need all three center ducts from a GT4. part number...
    981-575-141-80-1E0
    991-504-487-91-1E0
    991-504-489-90-1E0
    Other threads have the parts list but for CS or BS but not GT4. Thanks

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    Re: GT4 front bumper for 981S?

    Many thanks to the people who contributed to this thread! With all your help I finally finished my conversion project. It took way longer than I expected, but turned out great in the end. I went with a full OEM front end including the third radiator. In the back I installed a replica wing.
    Attached Thumbnails Attached Thumbnails GT4 front bumper for 981S?-gwc_0323-edit-jpg   GT4 front bumper for 981S?-gwc_0169-edit-jpg  

  13. #251
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    Re: GT4 front bumper for 981S?

    Looking great! Congrats and thanks for sharing.

    Sent from my Pixel 3 using Tapatalk
    RY CGTS

  14. #252
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    Re: GT4 front bumper for 981S?

    Quote Originally Posted by dyefremov View Post
    Many thanks to the people who contributed to this thread! With all your help I finally finished my conversion project. It took way longer than I expected, but turned out great in the end. I went with a full OEM front end including the third radiator. In the back I installed a replica wing.
    Any issues with the rear wing mounts at high speed? Are these riveted to the hatch?


    Sent from my iPhone using Tapatalk

  15. #253
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    Re: GT4 front bumper for 981S?

    Quote Originally Posted by khoahtran View Post
    Any issues with the rear wing mounts at high speed? Are these riveted to the hatch?
    Yes, the wing is attached to the top surface of the hatch with blind rivets. The metal is relatively thin there and has a lot of flex. This results in the wing wobbling at high speed or on rough roads. I believe any wing riveted like this will have this issue (from $300 Chinese no-name clone to $1300 NRAutoicon to $2600 TWL Carbon). If I were to do it again I would go with either Getty Design or with a GT4 hatch swap + OEM wing mounts. For the time being I'm going to keep the current setup, but eventually will move to Verus Engineering.
    Attached Thumbnails Attached Thumbnails GT4 front bumper for 981S?-img_20181219_165509-jpg  

  16. #254
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    Re: GT4 front bumper for 981S?

    Quote Originally Posted by dyefremov View Post
    Yes, the wing is attached to the top surface of the hatch with blind rivets. The metal is relatively thin there and has a lot of flex. This results in the wing wobbling at high speed or on rough roads. I believe any wing riveted like this will have this issue (from $300 Chinese no-name clone to $1300 NRAutoicon to $2600 TWL Carbon). If I were to do it again I would go with either Getty Design or with a GT4 hatch swap + OEM wing mounts. For the time being I'm going to keep the current setup, but eventually will move to Verus Engineering.
    I was afraid of that, I have the eBay wing and it didn’t seem too sturdy so I got lucky and got an oem wing w oem mounts, just need to find a oem gt4 hatch now. It seems like making an oem style mount from our cayman hatch is daunting task. I asked versus about their wing mounts and if they had plans to make a mount for the our normal cayman hatch and their response was that it would be too costly for them to engineer something when a gt4 hatch is already available.

    150mph on a roval will surely rip the wing off if it was mounted to the top.


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  17. #255
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    Re: GT4 front bumper for 981S?

    Quote Originally Posted by khoahtran View Post
    I was afraid of that, I have the eBay wing and it didn’t seem too sturdy so I got lucky and got an oem wing w oem mounts, just need to find a oem gt4 hatch now. It seems like making an oem style mount from our cayman hatch is daunting task. I asked versus about their wing mounts and if they had plans to make a mount for the our normal cayman hatch and their response was that it would be too costly for them to engineer something when a gt4 hatch is already available.

    150mph on a roval will surely rip the wing off if it was mounted to the top.
    I have always been wondering where people get deals like that? What are the chances of somebody selling an OEM wing with mounts for a non-OEM price?

    My first track day with the new aero is coming up in 2 weeks. Will report back how it did at 120+mph :-) There was a build by BGB using NRAutoicon wing and they said it's doing Okay. Will see.

    I'm considering fabricating uprights that would go through the hatch and attach to the bottom surface. Metal there is much thicker and seems sturdier. Probably not worth the time, but I just like the process.

  18. #256
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    Re: GT4 front bumper for 981S?

    Quote Originally Posted by dyefremov View Post
    I have always been wondering where people get deals like that? What are the chances of somebody selling an OEM wing with mounts for a non-OEM price?

    My first track day with the new aero is coming up in 2 weeks. Will report back how it did at 120+mph :-) There was a build by BGB using NRAutoicon wing and they said it's doing Okay. Will see.

    I'm considering fabricating uprights that would go through the hatch and attach to the bottom surface. Metal there is much thicker and seems sturdier. Probably not worth the time, but I just like the process.
    I had noticed that too but they just recently removed the NR wing for a Getty wing stating that they weren’t comfortable doing Daytona with the NR wing.


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    Re: GT4 front bumper for 981S?

    Had a track day with the new aero. No issues with the wing at 120mph. It still wobbled and I would still prefer a more stable mounting base, but not a deal breaker.

    https://www.instagram.com/p/BzhcVqjgpiK/
    Last edited by dyefremov; 07-07-2019 at 07:09 PM.

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