Hello everyone,
I currently have a Gen 1 987 which is exclusively for track use. Under heavy abuse I am getting alittle brake fade and would like some cooling in the front rotors. So far the
GT3
brake ducts are not enough so I resorted to buying the fender lines and deflectors from a 996 GT2/GT3RS. They reroute all the air from the radiators and funnel it into the brake rotors. So now you have fresh air from
GT3
brake ducts and a ton of volume from the radiator moving all the air in the wheel well evacuating all the heated air. Even though, the radiator air flow will be 190-210 degrees, it will still be cool in relation to a superheated 500+ degree rotor. I will docuement exactly where to cut and little nuaces of this modification. I will not go into detail on how to remove the bumper and stock fender liners.
***Disclaimer: These are not a perfect and does require some massaging and trimming to get them to fit right.
Okay so first the part numbers.
Fender Liners
Left - 997 504 123 80 - $179.95
Right - 997 504 124 80 - $179.95
Liner Lip
Left - 997 504 303 80 - $25.00
Right - 997 504 304 80 - $25.00
Deflectors
Left - 997 575 231 91 - $25.95
Right - 997 575 232 91 - $25.95
Here are some pictures of the parts.
So first thing is first, you need to remove the radiator shroud from the radiator assembly to close the bottom channel for air to escape.
After removing, the fender liner and bumper, there will a thin, black bar held by two 10mm nuts. take those off.
Next step is to remove the radiator bracket which holds the radiator in place. There are 2 13mm nuts, 2 13mm bolts, 1 6 point bolt, and two clips that need to be removed. Be ready to place a block of wood under the radiator. There is one 13mm bold hidden up front where the radiator ducts are attachting the assembly to the chassis.
View attachment 204409
View attachment 204411
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After removing the brakcet you'll have the neccesary space to shimmy the shroud off. Try pushing it away from you while pulling it away from the fan.
Now with the shroud out, grab some sheet metal, a sheet metal cutter, and some rivets or self tapping screws. Make a small plate that will seal the bottom opening the releases air from the stock liners on the 987.
Okay now, reassmble the radiator assmebly. After this, add the little spoilers to the radiator ducts. Also, optional get some mesh of your choice and rivet to your new fender liners.
*****You will need to buy more screws to hold extra parts.
Now we can move one to test fitting our new fender liners. There will be modfications to these liners to make them fit.
Reinstall bumper, and just tie down the two points where the bumper meets the fender
There is a hole that needs to be opened in the new liner to allow the stock mounting point of liner and fender to be screwed in.
Also as you can see there is a ton of extra material at the bottom of the liner. Material that you will not need.
So you need to cut right along the border as well as the spoiler lip.
You will also need to cut this angled mounting point of the fender liner to allow it to tuck within the bumper without offesting the position.
There are 6 points where the OEM screws will be used.
View attachment 204439
On this last picture, the fender liner is fully secured however the radiator bracket creates alot of pressure on the liner so to relieve that i notched it.
Adding the deflector are pretty easy. THe liner has mounting points ready to use. You can use an old retaining clip from the stock liner to secure the metal bracket that props the deflector on the brake line bracket.
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Youre almost done! You have to notch the deflector to allow the control arm to move freely under full compression and steering lock.
Contrats! Youre done!
Please let me know if you have any questions or comments! I will be happy to help! Enjoy cheap brake cooling!
Shoutout to Krokodil for inspiring this DIY!
Just wanted to give you a big thanks for this guide. I've been planning out how to improve my front-end aero via a splitter, sealing off the underbody radiator vents, venting the front fenders, etc. Can't imagine I'd have found these GT2 fender liners without you!
wow - thanks
mgarcia048
for the writeup and Hyrax for giving it a bump...
I know this is an old writeup, but thanks for all the info and taking the time to document
