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My S2000 has gone through a few stages on the way to wear it is today. The biggest set of changes started last year with a TTS Rotrex SC install. The Rotrex setup was amazing and created so much boost we actually ended up adding blowoff valve setup to cap boost at 12 PSI.
Overall the kit was great on the road, but even when paired with a Mishimoto radiator and a vented hood, was still prone to overheating on long track sessions in the summer.
So this winter we decided to get a bit more aggressive with the cooling setup.
The TTS kit comes with a huge intercooler that blocks the entire bumper opening and even extends a few inches above it. I also tested with compressed air and got very little air behind it when blowing through the intercooler. Also because it was originally intended to work with A/C unit, it sits too far in front of radiator.
Old TTS Kit Intercooler
Working with AR Auto Service in Portland, they designed a new intercooler setup with these advantages:
- Pushed further back to optimize flow through to radiator
- Shorter to allow some air to flow over intercooler to radiator
- Despite being a half inch thicker, actually flowed better when tested
New intercooler
I also purchased a MrSideways radiator last year, which featured dual pass design and an integrated oil cooler
MrSideways dual pass radiator with oil cooler
The new AR designed pipes were much shorter and had more consistent diameter throughout.
Other toys added:
- New rotors (already had Rotora BBK)
- MCS 2 Way Adjustable Suspension
- Momo wheel
- Recaro Pole Position Seats + Schroth 6 Point Harnesses
- Hard Dog bar
- APR Splitter and GTC 300 Wing
- Ballade Sphericals
- Megan Engine Transmission Mounts
- Ceramic coated OEM headers
- OEM hardtop (still need to paint and swap out softop)
Finally Dyno Chart...
Red line is with the TTS kit last year, blue line is with new AR designed piping and intercooler. To be fair it was a cold day when we did this test, but we did everything we could to heat soak the car and got intake temps up to 90F. Throttle response on the new setup is much better because of the shorter pipework.
Thanks to AR Auto Service for all there help, can't wait to get this car back on the track!
Very nice, I'm trying to decide what SC kit to buy for track work. Besides changing the intercooler and piping config, do you have any gripes with the TTS kit on the track? Belt life and tensioner been ok?
Very nice, I'm trying to decide what SC kit to buy for track work. Besides changing the intercooler and piping config, do you have any gripes with the TTS kit on the track? Belt life and tensioner been ok?
Honestly if I could go back I'd probably look into a V mount style setup. Or if you plan on having a shop do the install, find an experienced shop and bounce some ideas around with them first.
SOS or a company with real race car experience maybe a better place to start.
That said I am really happy with where I have ended up with this setup, and look forward to giving it a go on the track (I just think I could have saved a lot of money if I did it right the first time!)
I forgot to mention I also went with a set of Forgestar F14 17x10 in matte black with RE-71R 255s.
We used a 6mm spacer up front, the fenders had already been rolled a bit. I am getting a bit of rubbing against the upper A-arm at full lock, but otherwise seem to be working in the road testing I have done.
02-04-2017, 10:00 AM
Track Rotrex SC S2000 Build
