Latest Project S2000 Articles

Project S2000: Part 21 - Getting Rid of Squish

by Khiem Dinh

I’m often of the philosophy of replacing things as they wear out. And when they wear out, I might as well upgrade! It all started with a slight banging noise while going over bumps. Over a bit of time, it got progressively worse. Eventually, going over any type of bump including creeping over speed bumps caused a loud banging noise. What was the source?


 

Project S2000: Part 20 - Stock Air Box Modifications And Not Going Faster

by Khiem Dinh

Everyone who has experienced trying to design parts to get more power of the S2000 naturally aspirated can attest to Honda not having left much on the table. Honda was of course limited by pesky general consumer things related to NVH. If you throw those concerns off the table, is there anything to be gained?


 

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...


 

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