Very interesting and invaluable informative Chris!
Hope the leak is just a minor setback. Sounds like you're close. Good luck!

 

Chris, would you mind sharing with us how you are getting the power to the ground?

Stock setup and only using part throttle?

Big rims with wide r compound tires, suspension, differential, clutch changes?

I know in my car with 9psi and the stock rims/tires with aftermarket suspension and clutch the rears break loose in first even if I roll out slowly and then floor it...can't wait to see how crazy it is tomorrow after I put the smaller pulley on lol!

 

Hope everything goes smooth. Can't wait to see some vids and pics!

Chris

 

Good luck and thanks for the heads up about GE.

 

[QUOTE]Originally posted by Wesmaster
[B]What would be the cause of a head gasjet leak?

 

I've already broken one ring and pinion, so I went with the Comptech differential upgrade and a Kaaz differential, although technically, I haven't addressed the situation with the ring and pinion. It's a time bomb. At some point I'd like to cryo treat the ring and pinion (this is probably priority number one).

I do go full throttle. That being said though, the EMS offers a 2-step rev limiter hooked up to the clutch switch. I'll be able to step on the throttle 100%, build boost, and hold the rpms at 5000 or whatever (the EMS will reduce/cut timing to do so). I let out the clutch, and the rev limiter bumps up to the normal amount. Great for launches, terrible for drivetrain components. If I get the drivetrain upgraded, I'll play with this. Until then, it's strictly rolling launches (sorry 1/4 mile time nuts, no times will be forthcoming).

Axles, tranny, driveshaft are stock (and probably won't be for long). Clutch is an ACT 6-disc puck (a little harsh on the daily driving but once you get used to it, is no problem.. don't expect your girlfriend/valet/carwash/honda mechanic/ to be able drive it easily though), pressure plate is a Comptech plate (a noticeable increase in throttle response, but not huge in my opinion).

I had stock wheels with the original turbo setup, and I had similar problems as you. In my best quarter mile time I had a 60 foot time of 2.1 or 2.2. I went with rather large wheels and tires (8.5", 285s in the back). They do a fantastic job of keeping the car planted: I did launch it once with them, hard, and the car just gripped and went.. I held even in the first 30 feet against a modded WRX, which is a big feat for the S2K. Nitto tires, nothing special.



Suspension is stock.

Answer your questions?

 

[QUOTE]Originally posted by VR WHAT
[B]Hope everything goes smooth.

 

Thanks for the feedback Chris.

I have been reading about the 2 stage rev limiter for version 1 of the EMS on the EMS forums. Don't know that I need to implement it for my setup because I NEVER drop the clutch....

I just don't feel the the downtime or paying to replace broken stock stuff with more stock stuff. If a solution comes out, either a new rear end, or axels or something that would allow me to launch consistantly I might consider it. Then again, I don't go to the drag strip and there isn't a street racing scene around here(or if there is I am not part of it). I figure since in the last year I've watched this place go from boosted S2000s = rare to dime a dozen now, all these punks will be breaking stuff and the developments over the next year will all be EMS tuning related or drivetrain related

I know what you mean about the clutch. I have a sprung 4 puck clutchmasters stage 4. I can only imagine that yours is even worse. How does the comptech pressure plate help throttle response? I thought that would be from the flywheel.

I too gotta get my butt on the dyno. See what the new pulley I put in today gets me. Expecting 11.5 psi tops and something in the area of 350 wheel hp. Nothing compared to you, but still fun

 

[QUOTE]Originally posted by Jenner
[B]Thanks for the feedback Chris.

 

If your return line were too small, or restrictive, your fuel pressure should be high at idle, then higher when the 2nd fuel pump first kicks in, but slope off in between and after. At 9000 RPMs and WOT, there shouldn't be much fuel being returned to the tank, since it will mostly be consumed by the injectors. I would guess that it would be something with your FPR.