Below are a couple of photographs of both the stock, and SG’s custom, intake plenum on the exit side of the throttle body.











On the stock intake plenum, the air stream exiting the throttle body is directed to the back end of the stock intake plenum, where it collides with the plastic wall of the plenum, before the air is forced to one of the ends of the plenum. This collision of air against the plenum wall creates turbulence and back pressure.

On SG’s custom intake plenum, the plenum diverts the air as it flows out of the throttle body, thereby preventing a collision of air against the back end of the plenum. This diversion of the air stream reduces turbulence and back pressure, and increases air flow.

I am not at liberty to disclose dyno test results, but the increase achieved by SG’s intake plenum alone is phenomenal. Call SG if you have any questions.

Craig

 

After much debate, I have also decided to upgrade to the Ultimate Motorworks Stage VII turbos, which are capable of generating the air necessary for over 1000 hp.

Finally, I am also changing the suspension. I am going with JRZ double adjustable racing dampers and springs, custom front and rear sway bars (24 mm/30 mm), and custom adjustable drop links.

Unfortunately, my project has been delayed by the machine shop that is shuffle pinning my case. They specialize in race cars and are currently booked solid with priority jobs. Their initial estimate of one week has been stretched out to three weeks. According to Stephen at IA, they are the best in the business and, therefore, we are hostage to their delays. If the case is finished by the end of this week (the current estimate), the engine will be done a week later, and will be shipped back to SG for final assembly. Meanwhile, I am driving around in a 1990 Acura Legend and it is killing me!!!!

Craig

 

Craig,

Here is the turbo, the 996 NA and one that we use that is a bit larger than the 996NA.

 

Here are the S Car Go intercoolers.



One suggestion, with your new intercoolers you ought to add the Andial intercooler gauge which gives you the incomming and exiting intercooler temperature along with the delta between the two. This would be alot more economical to do now than later.

 

Your "Y" pipes also look interesting. Here is what we did.



Note the inlets on both sides are double jacketed with nozzles to inject CO2 to additionally cool the compressed air coming off the intercoolers. Once the CO2 passes through the "Y" pipe it is sprayed onto the intercoolers.

 

Your throttle body looks remarkably similar to a GT3 throttle body. I thought about it, but opted for the smaller NA unit, notwithstanding the greater upside potential of the GT3 unit. The NA unit should supply enough air for my purposes.

Craig

 

Not surprisingly, SCARGO's intercooler also expands the entry tank.

Craig

 

As for splitters. I like the design you are using. We started with something similar .......

Then went to this ........


It appears your tuner is pushing the envelope in alot of areas. I'm sure your motor will be a real monster. Good luck, and yes delays come with this kind of turf.

 

Craig,

What is your horsepower goal for this beast?

Looks like you guys are doing some awesome things to achieve your goals.

 

I do not have a HP goal. My guess is that it will end up somewhere between 900 and 1000 FWHP, but thats just a guess.

Craig

 

Craig and Chad, just keep talking and showing pictures. Please! This is awesome!

 

ColorChange,

My above pics are all old pics which have been posted in the cjv' s car go thread.

 

I don't know about Craig's goal, but the hp isn't the big deal. Add enough boost and you will get the hp. The trick is to obtain 900 to 1000 hp @ 1.0 to 1.1 bar.

 

CJV is absolutely right, efficiency.
I have 705hp@1.1Bar (engine dyno) from an air cooled 3.8 Ltr engine. A 996TT is maybe about 15% more efficient, so if you get around 800hp at 1.1 Bar you have a good engine. The other measure I would look after is hp/Absolute bar (atmospheric pressure, no boost), mine is around 340-350hp/absolute bar. Engine built by Todd Knighton.

 

that is one mean motor at 15psi! its a 3.8 twin plug in a 993 turbo right?