don't forget about cylinder #4

 

[QUOTE]Originally posted by YoungS2K
[B]I think a custom intercooler to go wit the Comptech SC will release lots of heat/pressure to the engine.

 

krazik, I've found water injection to be a mixed bag on FI engines. I've seen it work very well and not so well. Turbo cars really seem to like it, SC cars not as much and I don't know why. I think it's very sensitive to where it's injected on a SC car. It tends to work best when you can tune the car to use it, as it will change the A/F mixture if you don't compensate, and usually you'll need a little more ignition timing too. I have an Aquamist system sitting at home. If anyone wants to give it a try on a Comptech supercharged car I'm willing to lend it. We'd have to tap a hole in the intake tube after the charger though.

On the intercooler topic, if you wanted to add one to the Comptech, you'd be adding alot of extra charge piping, and you'd lose a little boost response and boost in the process. Thus you'd want a bigger pulley and you'd probably want to recalibrate the rising rate FPR. Probably wouldn't be worth it, especially if you lost your Comptech warranty after already losing the Honda one! An oil cooler would be simply and beneficial on any S2000 IMO.

UL

 

I do believe that I heard Comptech is working on an intercooler for their SC. I had a VR6 GTI and had done cams chip, intake manifold, and intake. After all that was said and done it was fun but...... If I would have just bought a SC I would have had more fun.
(does anyone know who makes an oil cooler kit for the S2?)
I am putting gauges in soon and in the process of looking for an oil cooler. I think it will help a lot. I am also interested in oil preasure department. But thats another story.
Yes cams will come out for this car but I dont think that they will do anything that the SC does. Not even close.
It will also be interesting to see what other "kits" come out for the S.
I just know that if I broke down now and got the Comptech charger for 4 grand in 4 moths something else will come out maybe a little better.
ZSR

 

In speaking with someone "casually" at Comptech, an intercooler may be in the works. Maybe.

 

The supercharger was released in early December. Mine may have been the first except for the test car. The S2K with the SC has more top end than the NSX but in low-end grunt the NSX will obviously take it.

 

couldn't you boost the psi with a smaller pulley?
also, i'd think that the sc would put a lot of stess on the clutch, tranny, and differentials from the torque.

 

My understanding is that Comptech tried several smaller pulleys. All they got was detonation and no low end hp gains.

 

Yeah, Jim and I talked about this when I was in Phoenix. The low end detonation was almost assuredly the result of the stock timing curve.

With a single plane intake manifold, normally aspirated engine, you get resonance effects. If you look at a stock S2000 dyno sheet, the torque curve peaks a little at about 3400 rpm (about 115-116 lbs-ft to the wheels on my car), then drops off to about 109-110 lbs-ft at 4500 rpm, then comes back up to about 120 lbs-ft at 5700 rpm - then VTEC kicks in :-).

But, the point is, when the torque curve dips, volumetric efficiency is dropping. That means that the mixture is probably less turbulent and the engine is less efficient. So, if past Hondas are any model, the timing curve will be advanced here, as much as 3-5 degrees, maybe more. That will certainly cause detonation and was a problem on my Jackson supercharged car. Going to a programmable ECU netted me a _lot_ of power elsewhere because I was able to retard the previous flat spot (the supercharger masks the inefficiency quite well).

If Comptech reprograms the ECU, even the timing curve, they could run a lot more low end boost and then bleed off at the top to limit maximum boost to whatever is safe.

UL

 

[QUOTE]Originally posted by Zsr31
[B]I do believe that I heard Comptech is working on an intercooler for their SC. I had a VR6 GTI and had done cams chip, intake manifold, and intake. After all that was said and done it was fun but...... If I would have just bought a SC I would have had more fun.