honda s2000 dot club - guides, installs, resources
honda s2000 dot club - guides, installs, resources


frequently asked questions

Courtesy of S2KI TALK

What is an AP1? An AP2?
• APx is Honda's S2000 chassis definition. Original S2000s made from 2000 to 2003 are AP1 chassis, while S2000s made from 2004 on are all AP2 chassis. The differences are significant and can be found in the model year FAQ (see link above).

It is important to note that in 2004, North American S2000s got a revised engine as well as chassis, commonly known as the AP2 engine (F22C) - this is the 2.2L stroked engine. Europe and Asia continued to get the 2.0L engine (F20C) in 2004 but in the updated AP2 chassis. Japan got the stroked 2.2L engine starting in 2006, but Europe never got the 2.2L engine. 

There is some confusion around the naming conventions of S2000s in Europe between AP1 and AP2 since they all have the F20 engine. Honda never officially released the AP2 chassis in Europe, some say it was a move to avoid regulation certification costs.

Which is faster?
Dynos show the AP2 has slightly more power (~20 hp) and more power available below VTEC (~20 hp) and is faster, but due to the need to shift to 3rd on 0-60 runs, the 0-60 times are identical between AP1s and AP2s. Track testing has shown the AP2 chassis and F22C engine are evolutionary improvements, as each two years or so, the S2000's performance improved slightly (00-01, 02-03, 04-05, 06-07, 08-09).

When does VTEC engage?
VTEC requires oil pressure and ECU logic to engage and seems to engage anywhere from 5700-6200 rpm on all S2000. VTEC disengages at a lower rpm based on ECU logic as well.

What are the actual redlines for the two engines?
F20C engines have a redline at 9,000, fuel cutoff at 9,150 rpm.
F22C engines have a redline at 8,200, fuel cutoff at 8,350 rpm.


Do AP2 wheels fit on an AP1?
• Yes, the have the same patterns and clearances.

What are S2000 production numbers?
• Honda does not separate sales by color, however:

Calendar Year -- U.S. --------- Europe -------- Japan ---------- Canada ------ Australia
Calendar Year U.S. ----- U.K. & Europe -- Japan -- Canada -- Australia -- MidEast/Africa
1999 3,400 1,179 7,209 332 596 
2000 6,797 3,955 3,422 412 521 
2001 9,682 2,197 1,913 401 308 
2002 9,684 2,537 1,471 336 164 
2003 7,888 2,095 961 238 79 
2004 7,320 2,036 1,087 250 39 
2005 7,780 1,795 981 212 40 
2006 6,271 1,474 1,225 146 30 
2007 4,302 1,116 997 123 26 126
2008 2,538 706 1228 65 15 82
2009 795 580 1,122 49 
2010 84 20 40 18

(from Wikipedia sources)

We have a general count on USA S2000s here that include break down by year, color, interior, and trim - https://www.s2ki.com/forums/index.php?showtopic=729838

We also have an older color poll here at S2ki for keeping a loose track of colors world wide - https://www.s2ki.com/forums/index.ph...ic=568988&st=0


My AP2 (2004+) S2000 feels like it has a slipping clutch on hard shifts. Why is that?
• When Honda revised the S2000 for 2004, it put in a heavier flywheel (22 lbs vs 14 lbs) but did not beef up the pressure plate to compensate for the greater rotational inertia. To compensate, either shift slower or install a firmer pressure plate oe lighter flywheel. People recommend the ACT pp or AP1 flywheels. Note you will only feel slip on a redline shift from 1-2 or 2-3 and if you shift slower you will not experience any slip even on a fast shift.

Read all about it here: https://www.s2ki.com/forums/index.php?showtopic=417350

How do I check my oil?
• When the car is parked on a level surface:

1a - Cold check - pull the dipstick while the engine is cold.
1b - Hot check - pull the dipstick after the engine has been running at normal temp for at least 20 minutes. Let the engine sit for a few minutes so oil re-enters the pan.

2 - Once you pull the dipstick, wipe it clean and reinsert all the way so the dipstick reseals, then pull it back out

3 - Look at both sides of the dipstick, and take a reading off the lowest side. As long as oil is above the MIN level, you are okay. You can refill oil so its between MIN and MAX, but try and keep oil levels between these two, not at either extreme - you don't want to overfill your oil. From MIN to MAX, there is a 1 quart difference.

How do I reset my ECU?

1. Remove the third fuse down from the second column (No. 25 Backup 7.5 A Fuse) from the fuse box under the driver's side dash (left-hand drive models)
2. Wait for 60 secs and replace the fuse (make sure to note the orientation)
3. Turn on the car (with all electrical items turned off & throttle fully closed) and let it idle for 5-6mins (Idle learn process) 

What's the difference between the Maint'd Req'd Light and the Check Engine Light?

Maintenance required light- This light is indicates 6,000 miles have accumulated on the odometer since it was last reset. The indicator blinks at 6K and will illuminate continuously after 7.5K.....indicating you should get the oil changed. If you self serve, reset the indicator as followshttps://www.s2ki.com/forums/index.php?act=S...0#entry12038951

Check Engine Light- This light relates to the ECU on the car. If it stays on it indicates your OBD-II computer has picked up a problem with the car. It can range anything from a loose gas cap to a major problem about to occur. If this light flashes......STOP the car and get assistance. A flashing light indicates a serious prblem. 

How can I turn the AC off when using Defrost? (2002+)
• First, we should take a look at the reasoning behind this... The process of air conditioning removes moisture from the air. This dry air works better for removing fog from the windows. To assist with defrosting, Honda has "programmed" the HVAC system to engage the A/C whenever the defroster is turned on. The trouble is, you cannot turn it off. 

To deactivate automatic a/c feature on a 2002+ S2000: 

1) Turn the ignition switch "on," but dont start the car. 
2) Turn fan speed off. 
3) Turn temperature knob all the way to the left (blue area). 
4) Turn vent knob to all the way to the left (panel position). 
5) Turn the ignitions switch "off."
6) Hold down both air recirculation button and a/c button while turning the ignition switch "on." Nothing lights up initially, keep waiting. The orange air recirculation indicator on the button will start flashing.
7) Continue holding both buttons until the orange air recirculation indicator stops flashing, then let go.

To reactivate automatic a/c feature: 

1) Turn vehicle off. 
2) Turn fan knob off. 
3) Turn temperature knob all the way to the left (blue area). 
4) Turn vent knob all the way to the right (defrost position). 
5) Hold down both air recirculation button and a/c button while starting car. 
6) Continue holding for 7 seconds until air recirculation button stops flashing. 
7) After the 7 seconds described in step 6, the recirculation button will start to flash. Continue to hold the button for another 7 seconds. After this, the a/c light will turn to green and it's finished! 

How do I open the secret compartment?
1. Open the center glove box (the latch is by your shoulder)
2. Pull the top of the center console where the latch is up

How do I read my S2000's VIN? (courtesy of HiPER)
The VIN for our car and any car after 1981 is a 17 character code. For the S2000:

1. J (manufactured, Japan)
2. H (manufacturer, Honda)
3. M (passenger car, made in Japan)
4-6. AP1/AP2 (chassis)
7. 1 (coupe+manual transmission)
8. 4 (grade)
9. Check digit (this is a random number - search VIN on Wikipeia to figure this one out)
10. Y, 1, 2, 3, 4, 5, 6, 7, 8 (model year, y=2000, 1=2001, etc)
11. T, S (manufacturing plant, T=Tochigi, S=Suzuka)
12-17. Production Number



Please take good care of your S2000, keep it by your side for long and enjoy it from the bottom of your heart. And share the quality and legacy of the S2000 with many friends so that the legend of the S2000 will continue for long

Shigeru Uehara

The father of the S2000




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