996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

DIY: Modding front radiator brackets for big tires

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Old Mar 15, 2016 | 03:55 PM
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Excellent thread, the radiator bracket bubble is indeed annoying!

Which specific tires you run and which wheels, 275/35/18 seems to be the tire size, but any comment on their specific size? No rubbing now?
 
Old Mar 15, 2016 | 04:11 PM
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Originally Posted by Fadi
from my calculations a 255/35/19 tire is 26" diameter, that means we can run 660 slicks in front, there is a big variety of slicks in 660 available (more than 645 and 650) in wider sizes like 260 till 280. I know there are sizes available from pirelli, michelin, hankook,dunlop etc
Ya they are tall. These are my street tires. I have re-11. In the future I will buy a set of 18s and run the same 275 and 335 setup Pwdrhound is.
 
Old Sep 2, 2016 | 06:51 PM
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Going to do this mod soon!
 
Old Sep 3, 2016 | 06:10 AM
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Originally Posted by vogz
Going to do this mod soon!
Good deal. Ya it's pretty easy to do and really opens up your opportunities for tires up front.
 
Old Sep 5, 2016 | 09:35 AM
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John, what are you doing in the rear? I just got back from a 2 day weekend and a screw from my left liner backed out and almost was a catastrophic failure - I noticed loss of traction and did a slow lap and came in next chance I had. I ask because this was a wear area I noticed before this happened and didn't realize the screw that holds the cover for the bracket in the rear was metal and not self tap plastic. For now I removed the bracket behind the liner that holds the wheel liner and simply tied this back till I figure out a solution.
I was running hollow twists at the time with 315/30 nt-01 and a 15mm spacer ( thought this would help)
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Old Sep 5, 2016 | 09:54 AM
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Originally Posted by Jferrante
John, what are you doing in the rear? I just got back from a 2 day weekend and a screw from my left liner backed out and almost was a catastrophic failure - I noticed loss of traction and did a slow lap and came in next chance I had. I ask because this was a wear area I noticed before this happened and didn't realize the screw that holds the cover for the bracket in the rear was metal and not self tap plastic. For now I removed the bracket behind the liner that holds the wheel liner and simply tied this back till I figure out a solution.
I was running hollow twists at the time with 315/30 nt-01 and a 15mm spacer ( thought this would help)

you can try bending the braket backwards and then heat the liner and mold it to add some room. sadly there isnt much space with a 315 rubber
 
Old Sep 5, 2016 | 10:05 AM
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Originally Posted by 32krazy!
you can try bending the braket backwards and then heat the liner and mold it to add some room. sadly there isnt much space with a 315 rubber
Yea I see what you're saying but even bending it doesn't give you much since the hose starts to get in the way
 
Old Sep 5, 2016 | 10:13 AM
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Originally Posted by Jferrante
Yea I see what you're saying but even bending it doesn't give you much since the hose starts to get in the way
in talking with my tuner/shop thats doing a ton of work on mine they made these for me. according to them the smaller diameter doesnt really effect the flow as it at the same diameter as the turbo compressor outlet. this allows for heating and bending the panel back ever so slightly more. and allows for a place to tie wrap to if needed
 
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Old Sep 5, 2016 | 10:21 AM
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You need to get rid of the TT brackets that attach to the liner down by the intercooler pipe. I use the GT2 brackets that attach to the liners about 6" higher up on the side. You can see the brackets in this picture with the liner removed. I simply buy the stock TT liner (it's the same part as the GT2 liner except 1/2 price) and install it. I then push the liner as far back as possible up against the intercooler hose and mark the spot where the hole in the liner needs to be to bolt to the GT2 bracket. I then drill the hole in the liner and attach with the OEM screw. This allows me to run 335 tires without issues and NT01s in a 335 are almost 14" across, a full inch wider and at 26" almost an inch taller than 315s. It obviously still requires the perfect offset wheels along with aggressive fender rolling and some additional trimming in key areas. I am running 18x13 ET46 rears.

[url=https://flic.kr/p/KsL1xW]

NT01 335s on 13" wheels. Lots of rubber...

[url=https://flic.kr/p/LHFBRW]

Here are a couple of shots of of the 335s showing clearances. Note the absence of the bracket down by the IC hose.

[url=https://flic.kr/p/LMM3qv]

[url=https://flic.kr/p/LtjJ1U]
 

Last edited by pwdrhound; Sep 5, 2016 at 10:29 AM.
Old Sep 5, 2016 | 10:39 AM
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Thanks John - do you have a part number for the GT2 brackets?
 
Old Sep 5, 2016 | 11:27 AM
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Originally Posted by jferrante
thanks john - do you have a part number for the gt2 brackets?
99650435391
99650435491
 
Old Sep 5, 2016 | 02:44 PM
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I went a little more redneck on mine. I removed the bracket, trimmed the bottom up some. Then headed the liner and pushed it back as far as possible. Then I drilled 2 holes and zip ties it to the intercooler bracket. Give me 1.5 inch more room back there. Also I drilled 2 holes in the liner down by the intercooler piping and zip tied the liner to the hoses. Lots more room. 8 can run my 325/30/19 with zero running. They are much larger than a 315/30/18
 
Old Dec 12, 2017 | 03:23 PM
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Bringing up an old thread for guys. Just did the mod on another customer car. Huge difference in space up front. Combine this with a fender roll and you can really make a 245 stick out and look nice, widen your track, and improve performance.

sorry my camera is kinda broken and sucks.





 
Old Dec 12, 2017 | 04:13 PM
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Nice write up as usual, John!

275/335 here and the fronts have..........well self clearanced the back of my liners up front...more so than the radiator bubble.

So, if I read you correctly I can save a few $$ and install turbo liners on the GT2? I had inquired about them on last service to axles.....maybe they avoided it in fact of GT2 part cost, or simply forgot.
 
Old Dec 13, 2017 | 01:40 AM
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Originally Posted by LukesportsmanX
Nice write up as usual, John!

275/335 here and the fronts have..........well self clearanced the back of my liners up front...more so than the radiator bubble.

So, if I read you correctly I can save a few $$ and install turbo liners on the GT2? I had inquired about them on last service to axles.....maybe they avoided it in fact of GT2 part cost, or simply forgot.
Rear TT and GT2 liners are the same exact part. The "GT2" liner has the hole predrilled in the side for the shorter bracket. I prefer the TT liner as I can press the liner all the way back and drill the hole myself which creates even more room.
 


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