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2005 RSX Challenge - Challenger

We build one of the baddest rsx's ever to do battle against five of our competitor's offerings.

Feb 1, 2006
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Htup_0602_01_z+honda_tuning_rsx_challenge_car_orange_rsx Photo 1/1   |   2005 RSX Challenge - Challenger

In the beginning of 2005, Acura announced the 2005 RSX Challenge, laying down the gauntlet for six magazines to build the baddest street/track DC5s and put them up against one other on the track, the dyno, and in shows. The track tests took place at California Speedway in Fontana, and included a road course, slalom, braking, and a trip down the 1320.

On the dyno, the cars were not only tested for horsepower, but also subjected to an emissions "sniffer" test under the same guidelines as any RSX in California. Finally, all six cars were judged for appearance in two shows, one at Acura headquarters in Torrance, Calif., and another at the NHRA Sport Compact World Finals in nearby Pomona.

Our RSX was a collective effort by a couple of crazy individuals bent on building a bad-ass contender. Ron Acevedo of Intrinsic Performance Solutions and Brian Kono of Afterhours Automotive teamed up to build one of-if not the-most powerful naturally-aspirated, pump gas motors ever to sit in a Honda's engine bay.

The 2360cc K20 wasn't anything that crazy, and included a set of custom JE pistons squeezing out only 11.5:1 compression-very similar to that of a stock ITR motor. Cams were off-the-shelf Intrinsic Performance units called K2's, relatively mild, street-able cams that almost anybody could use in their own daily-driven RSX.

Much of the power was made with the custom Castillo crank, which measures 94.9198mm from center to center, and accounts for most of the extra 362ccs on top of the stock 1998cc displacement. Feeding the beast were a set of Jenvey independent throttle bodies on a Hayward Performance street manifold. Spent gasses exit through a Burns Stainless 4-1 header.

If anything, this motor proves the simple truth that it's not necessarily how nuts each individual part of a motor is, but rather how well they all work together to make power. In this month's installment, we follow Brian as he builds the IPS-spec K20 that drove our RSX to a second place finish in the Acura RSX Challenge.

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Sources

Eibach Springs
Corona, CA 92879
800-507-2338
www.eibach.com
Hondata
Torrance, CA 90503
310-782-8278
http://www.hondata.com
Afterhours Automotive
Cypress, CA 90630
714-220-2030
http://www.afterhoursautomotive.com
Church Automotive Testing
Wilmington, CA 90744
310-518-4966
Centerforce Clutches
Prescott, AZ 86301
928-771-8422
http://www.centerforce.com
MagnaFlow
Rancho Santa Margarita, CA 92688
800-824-8664
www.magnaflow.com
JE Pistons
Huntington Beach, CA 92649
714-898-9763
www.jepistons.com
Intrinsic Performance Solutions
Torrance, CA 90502
310-697-3045
http://www.intrinsicperformance.com
Baker Precision
Signal Hill, CA 90755
562-427-5624
http://www.bakerprecision.com
Burns Stainless
Costa Mesa, CA 92627
949-631-5120
www.burnsstainless.com
Cometic Gasket
Concord, OH 44077
440-354-0777
http://www.cometic.com
Driveshaft Shop
Salisbury, NC 28147
704-633-2380
http://www.driveshaftshop.com
HaSport
Phoenix, AZ 85040
602-470-0065
http://www.hasport.com

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