What did you do to your 996TT today?
01-14-2019 | 01:52 PM
#4321
Rennlist Member
Joined: Dec 2010
Posts: 7,167
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Thanks John, sounds like our 996TT friends need to catch up on Porsche history. 000 Issue #5 has an amazing amount of 996 history. On a side note, I upgraded my "radio" lol and total weight is well under 3k lbs without a 210 lb driver and lots of fuel in the tank. I'll do a final weigh in after dyno runs and classification for 2019 season 
Last edited by powdrhound; 01-14-2019 at 02:20 PM.
01-14-2019 | 03:39 PM
#4322
Racer
Joined: May 2015
Posts: 301
Likes: 26
From: Atlanta, GA
01-14-2019 | 09:17 PM
#4325
Rennlist Member
Joined: Dec 2010
Posts: 7,167
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!["02996ttx50's Avatar](data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'><circle class='avatar-circle-default' fill='%23759d7b' cx='25px' cy='25px' r='20px'></circle><text class='avatar-text-default' x='49%' y='53%' fill='white' text-anchor='middle' alignment-baseline='middle'>"</text></svg>)
01-15-2019 | 02:49 AM
#4328
Rennlist Member
Joined: Dec 2010
Posts: 7,167
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Yes, the engine is a 4.0. We used Mahle Motorsport pistons and liners along with the latest generation Porsche Motorsport RSR crankshaft and bearings, RSR billet IMS, and custom Carrillo rods for starters. The engine is extremely responsive and rev happy due to the large displacement breathing through a low restriction 3.5” Titanium exhaust and is silky smooth and quiet. All the pistons weighed in within 1 gram of each other.
Last edited by powdrhound; 01-15-2019 at 03:07 AM.
01-15-2019 | 10:12 AM
#4329
Three Wheelin'
Joined: Dec 2001
Posts: 1,983
Likes: 24
From: USA
Yes, the engine is a 4.0. We used Mahle Motorsport pistons and liners along with the latest generation Porsche Motorsport RSR crankshaft and bearings, RSR billet IMS, and custom Carrillo rods for starters. The engine is extremely responsive and rev happy due to the large displacement breathing through a low restriction 3.5” Titanium exhaust and is silky smooth and quiet. All the pistons weighed in within 1 gram of each other.
01-15-2019 | 10:39 AM
#4331
RL Community Team
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Joined: Feb 2010
Posts: 11,481
Likes: 2,644
From: Nearby
Yes, the engine is a 4.0. We used Mahle Motorsport pistons and liners along with the latest generation Porsche Motorsport RSR crankshaft and bearings, RSR billet IMS, and custom Carrillo rods for starters. The engine is extremely responsive and rev happy due to the large displacement breathing through a low restriction 3.5” Titanium exhaust and is silky smooth and quiet. All the pistons weighed in within 1 gram of each other.
01-15-2019 | 05:18 PM
#4333
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Joined: Dec 2010
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The build was done by CTSR (Cervelli Technical Service). Joe Donkle did the actual build in collaboration with Chris Cervelli. I was able to peek over their shoulder and see a lot of the engine build tricks they use in building these things up which was very cool. Fitting the 4.0 jugs is a super tricky feat as there are no commercial ring compressors made for this so custom ones had to be fabricated. Watching them time the engine was also very interesting as they use special timing tools which give them greater resolution and precision beyond the OEM timing tools. I would compare the OEM tools to a butter knife versus a scalper for the stuff they use. Joe also did the build on the brand new 996GT2 gearbox I gave them. They installed a 997GT2RS 1-4 gears, a Porsche Motorsport 996Cup 2/3 shift fork, and a Guard Chromoly GT2 LSD. I do most of my maintenance but the heavy lifting is all done by CTSR. There is simply no other shop I know that has the depth of knowledge for race set ups on these cars.
Last edited by powdrhound; 01-16-2019 at 02:50 AM.
01-15-2019 | 05:20 PM
#4334
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Joined: Dec 2010
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