Latest Project S2000 Articles

Project S2000: Part 19 - Ram Air!!! Plus Hot Air Testing!

By Khiem Dinh

Did I mention there would be more hood hacking? Why yes I did. Somewhere along the other 18 parts of this project, I noticed the stock air box looked relatively well sealed along with having a location ideal for ram air. Ram air is used on practically every sport bike you can buy to coax as much power as possible from the engine. Even cars such as the Corvette Z06 and Dodge Viper use ram air.


 

Project S2000: DIY Vented Hood

By Khiem Dinh

The destroyer of all track vehicles is excessive heat. Whether it is the coolant, various oils, or brakes, too much heat will lead to failures. On Project S2000, we’ve already addressed the engine coolant and oil temperatures with an upgraded Koyo radiator and Earls Temp-A-Cure oil cooler. These heat exchangers depend on airflow to in order to remove heat from the coolant and oil. No airflow means no cooling, hence the need for fans when the car is sitting still. One way to improve the airflow through the heat exchangers is to minimize the resistance to the air exiting from behind the heat exchangers. For the vast majority of street cars, all the air has to dump out the bottom of the engine bay. So how do we minimize the resistance to airflow? By increasing the area the air has available to exit. In this case, we’re venting the hood.


 

Project S2000: Testing Temps and Tools (Replay Camera and IR Pyrometer)

by Khiem Dinh

At my last track day, I got an IR pyrometer as a new toy for taking some data.  For this track day, I added a Replay XD1080 HD video camera to the mix to replace my previous camera (which met an untimely demise).  Furthermore, a few friends of MotoIQ were also in attendance to join in on some track day fun.  Video was taken and many temperatures were measured.  Keep on reading to see how the Replay works and different brake systems stacked up.

 

 

Project S2000 - Testing Track Upgrades and Custom Brake Ducts

By Khiem Dinh

All of the stars aligned a few weeks ago and I took Project S2000 to the track.  Centerforce clutch and AP1 flywheel – installed and broken-in, Hasport engine mounts – installed and broken-in, custom brake ducts – prototyped and test-fitted, K.R.O.P.S holding track day at Willow Springs – scheduled, other MotoIQ project cars going – check.  Custom brake ducts?  Let's start with those.


 

 

Project S2000 - Making a More Responsive Drivetrain

By Khiem Dinh

The AP2 generation of S2000s were made a bit cushier and street friendly compared to the AP1s for the general American consumer.  A larger displacement engine along with shorter gearing were specified to give more torque at the wheels which Americans desired.  However, Honda also matched a heavier flywheel and modified the clutch system with both negatively impacting the level of track aptitude.  Step 2 of Phase 2 is to shift the drivetrain bias more towards the track side of the equation compromising some everyday livability for better performance.


 

Project S2000: Phase 2, More Grip

By Khiem Dinh

"Where has Project S2000 been" do you say?  I've been having fun and driving the piss out of it.  I had completed Phase 1 of the build which was to make a fast, reliable, and uncompromised daily driven street car that could be driven at the track without fear of breaking anything.  Well, the car is no longer my daily driver, so I have decided to commence with Phase 2.  A Porsche GT3RS is my philosophical car build benchmark; while it CAN be driven on the street, it's not exactly a car that you would want to daily drive as it introduces compromises to DD duties in order to improve track performance.  Phase 2, Step 1 = more grip and protecting the engine against increased lateral Gs.


 

 Project S2000 - Hondata KPro Gives More Power and Better Power

Project S2000 – Hondata KPro Gives More Power and Better Power

By Khiem Dinh

Power delivery is an important characteristic in being able to go quickly; just ask any motorcycle racer where they only have one tire contact patch to put down the power.  The S2000's one fault is a poor power delivery curve due to the VTEC engagement.  I hate the VTEC engagement and the resulting torque spike which hurts drivability.  It is not fun being WOT coming out of a corner and having the torque spike hit.  Therefore, my goal was to reduce the spike by changing the VTEC engagement point to smooth out the torque curve and I needed a way to tune the car to meet my goal.  The Hondata KPro system met my requirements for the job.


Project S2000 - More Winter Testing and a Challenge

Project S2000 - More Winter Testing and a Challenge

By Khiem Dnih

It started off like any other chat conversation (note: actual words may have been modified from the original text in order to fit the screen and time allotment)

Khiem:   Yo Martin, what's happenin man?  

Martin:  Workin.  What's up with you?

Khiem:  I need to take the S2k out for a track day in cold weather.

Martin:  Oh yeah?  I need to take the SE-R out.  Speed Trial USA has a day coming up at Streets.

Khiem:  Perfect!  How much power does that SE-R make...


 

Project S2000 - Guest Test Drive

By Vic Y.

I am what you'd consider an auto enthusiast, with a few track days and quick karting times under my belt. I love taking advantage of the fun roads in the Hill Country near Austin (but probably not often enough). On the technical side, I come from an engineering background and the backing of a dozen auto RSS feeds.  When the random opportunity came up to visit Khiem in Los Angeles (and drive his tuned S2000), I couldn't turn it down. Having originally driven the car in stock form back in Austin before it made the cross-country trek on I-10, it was good to be reunited with an old friend (and Khiem too).


 

Project S2000 - Track Testing Revised KW Clubsports and Earl’s Oil Cooler

By Khiem Dinh

The last track outing for the S2000 showed a few deficiencies still existed in the setup.  The most problematic from a reliability standpoint was the scorching oil temperature.  From a speed standpoint, the car was still very loose (last track update).  Going back to the beginning of the project, you'll remember that we switched the tire sizing from a stock staggered setup (215 widths up front, 245 on the rear) to an even, or non-staggered, setup utilizing 245 width tires front and rear (Part I).


 

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