I haven't noticed a significant change in fuel economy but I've only gone through a little over one tankful. I have noticed no difference in the NSX as far as mileage before and after the supercharger. As an aside, who cares about mileage?

 

derryck,

First off, for running 4-5 psi you most likely would not benefit from an intercooler. I'd leave that out.

For saftey with a custom kit I'd recommend a minimum of an EGT or air/fuel ratio meter to keep from running into any big problems.

I'm sure your mechanic is excellent, I dont doubt your mechanic, other than considering to turbo an S2000 blindly, assuming that it will react like any other car. (of course this is all implied from the information given). I've talked with various owners of turbo S2000s and all have had hell turboing the car. Now that I find your only planning on 5-6 psi, I'd really recommend staying away from turboing. For that low boost, your much better off going with the Comptech kit. I assumed that you wanted to run beyond 8psi min, and the comptech kit didnt offer you enough power.

IMO, a turbo shouldnt even be thought of for the S2000 without both a large budget for the project (beyond $10-15k) as well as a needed goal of beyond 300 wheel hp. Anything less than that much money or HP and a supercharger is a no-brainer.

If you'd like to go into greater detail about the turbo kit, I'd be glad to help, but at 5psi I'd really recommend scrapping the idea.

 

[QUOTE]Originally posted by Ben:
[B]I'm not sure of their TT setup for the NSX, but the odds are that its the bell tt kit.

 

Ben,
I definitely appreciate all of your help on this. You obviously know a great deal more than I about the mechanics of an automobile including forced induction. I know that my mechanic for one reason or another hates superchargers but I also know that some of the fastest imports in the country are his creation. Not so much pure race/drag cars but daily driven turbocharged cars. I love the S2000 the way it is and still haven't decided if I'm going to do anything to it. If I do decide to do something I think the simple 'bolt-on' nature of the Comptech has alot of appeal. My main goal in raising this discussion was to try to find out a little more about the S2000 engine and what it can handle. At 5 PSI the kit that I am talking about would put down substantially more horsepower and torque than the Comptech kit. However, I like the fact that the driveability of the car seems to not be adversely affected by the Supercharger. Thanks again Ben.

 

[QUOTE]Originally posted by Jim Lieber:
[B]I am not an expert in this field but I happen to own both a supercharged NSX (Comptech) and one of the few (thus far) supercharged S2000s.

 

No, no! Supercharge for whirled peas!

 

Jim is absolutely correct. The S2K kit from CT is a very reliable product and offers an amazing hp/$$$ ratio. The NSX kit, of which I have installed almost thirty now, has got hundreds of thousands of user/ miles with no engine or SC failures. There is every reason to beleive that this kit will be just as reliable.
I did the kit on Jims S2000 last week, and am happy to share any info about the kit or install. Direct any questions to this e-addy, or on weekends, try me at home- mavrum@home.com
Mark Basch

 

"Jim is absolutely correct."

Great customer service, "the customer is always right"

lol. Seriously though, this entire post could have been ended a while ago with the mention of a 5psi turbo kit. Comptech SC is pretty much as safe as it gets to go forced induction with the S. Any additional troubles of generating a custom kit would be a waste of time and money without signifigantly different results. I made the false assumption earlier that this turbo kit was intended to produce a much higher power output than the Comptech kit with also an addition in low rpm power over the SC kit. This was poorly assumed due to my prior interest of producing a relatively similar turbo kit for the S producing approx 400hp.

Derryck, I think you've got your answer here. I would however love to hear more about this shop your dealing with as they seem to have done some impressive work.

RT: I believe so. I'm no NSX expert in the slightest, but I do remember reading and hearing about many NSX's with a bell tt setup. Pretty sure its Corky Bell...I think Jim or Mark would be able to verify or disprove this statement as they are both NSX owners.

 

Ben, a couple of last things. The turbo kit that I was considering would push around 400 hp at about 5 PSI, not that it really matters now. Anyway, I spoke to another performance shop here in town and they told me that Jackson Racing was about to start selling the same kit as Comptech. Is this true? I don't deal with this shop alot because I don't have the faith in their mechanics that I have in mine. I have dealt with Oscar Jackson on a couple of occassions in the past and didn't really care for his customer service skills too much but if the kit is the same and I can get it for less, then why not?

 

MarkB, you think the S's stock clutch, tranny, exhaust/header can handle the SC's extra load? I'm trying to see what other costs could be involved beside the SC and install. labor. Thanks, Brian