[QUOTE]Originally posted by S2kRob
[B]I honestly don't think he knows how to launch.

I've seen an EVO 7 from a standing start eat an NSX and an RX-7 - badly.

WRX + a $5-$6k turbo package will have that car doing 0-60 in mid to low 4's and 1/4 mile in mid 12 second range.

 

I think its true that the tranny on WRX is not as strong as it should be ....... a friend of mine has one and surfs on the WRX board like our wonderful s2ki.com, his comment on the WRX tranny is ............ its a "glass box"

 

So what happens if you drop the clutch let's say at 4 grand in the WRX?

Also about the S4 launching, I hear it's kind hard also to drop the clutch.

 

Quick calculation: 270lb/ft of torque at 6500rpm = 335 hp. 270lb/ft of torque at 7000rpm (WRX redline) = 360hp.

So, 270lb/ft of torque is more than enough to make huge horsepower, you just have to make that torque in the right place.

 

integrate.

When I drop the clutch at 4K on my WRX, i get a little bit of rear wheel chirp, and then all the tires grip and I bog down. The Rex is very easy to launch. Just rev to about 4K, and slip the cluth a little. Then once the car starts to move, you let out the rest of the clutch in a quick motion. It really snaps your head back. Definitely easier to launch than the S2K. Not sure how much torque you get in 1st gear, since the stock WRX is limited to 10psi in 1st, but it seems to be alot.

With the S2000, either you spin the wheels like crazy or you bog down. There's no in-between.

Watch out for the WRX's with a manual boost controller (or any boost controller). With a simple $50 mod you can ensure full boost (14psi) in 1st gear, making it much quicker off the line. Also the MBC tends to flatten out the curve at high RPMs, as the ECU will try and drop the boost to about 9psi near redline. WRX's equipped with nothing more than a boost controller are significantly quicker than a stock one.

(edit)

The general consensus on the WRX 5-speed transmission is that it's good to about 280lb-ft or so. This should be enough for about 300HP. The auto trannie is reportedly much better, but then it's an auto . The only available option WRX owners can turn to is an STi supplied 6-speed that costs $8000. Ouch!

 

[QUOTE]Originally posted by ragtop
[B]integrate.

When I drop the clutch at 4K on my WRX, i get a little bit of rear wheel chirp, and then all the tires grip and I bog down.

 

[QUOTE]Originally posted by S2kRob
[B]

Quick calculation:

 

From what I've seen, a stock WRX makes peak power at around 5500rpm, so there are two options:

1) You move the peak torque upwards.
2) You create a broad plateau of near max torque over a several thousand rpm range.

Seeing as you own an RX7, I don't need to tell you what bolting on a bigger turbo can do to the engine characteristics. They typically move the peak torque up the rev range.

Also, changing the tranny is actually more expensive than changing the engine characteristics. A base upgrade to stronger synchro compatible gears runs over $3k. From there, you can go to a dogbox. Beyond that, the only other option is the new STi 6 speed box, which retails for about $8k, but can probably take about 300ft/lb or more of torque reliably - no one really knows yet.

 

You're right, a bigger turbo will do it.

 

You guys are missing the most critical point. Like our stooks the S4 and the WRX don't come to life until you toss them into the turns on a track.

Then all I can say is hang on, especially when it