S2-3456789-K

to the OP, i recently came across a few threads that refer to "crank walk." can you explain what that is?

slipstream444

[QUOTE=99SH,Aug 5 2008, 09:27 PM] Increase life in stop/go traffic? You do realize you would have to disengage the clutch to shift to 1st gear right? Unless you keep the car in neutral you're not gaining anything.

Same thing with the startup issue. Everything you say is valid if you never shift out of neutral.

slipstream444

No problem -
crank walk is the result of excessive wear or failure of the thrust bearings of your crank shaft. Thrust loads are loads that push or pull on the crankshaft (imagine a force vector pointing straight forward out of the crank pulley or straight aft out of the flywheel of the engine.

chino101

I thought this wasn't an issue since the S2000 pulls to disengage the clutch, unlike other cars that push against the the crank to disengage the clutch. Correct me if I'm wrong.

slipstream444

A pressure plate either pushes or pulls - this only means the force will try to push the crank out of the front of the motor, or pull it out of the back of the motor. It only affects the direction of the force, but in no way diminishes the force itself.

chino101

Ahhh.....I see now. I might do this mod since my 1986 CRX doesn't even have a clutch interlock switch.

S_nisen

Thanks for the writeup slipstream, guessing you decided to do this after I asked if there was one. One more question, maybe you will or will not know being you have a '03 model and your DIY shows 00-03 service manual pics, this should pertain to all models? I guess only one way to find out for sure, yoga my ass under the steering column. Thanks again.

slipstream444

I'm pretty sure the '04-'05 is the same - but it would be a good idea to make sure. I haven't been under the dash of an '06 or later.

Anyone with S2000 manuals for vehicles in the '04 and later category please post information for those cars.

99SH

Should be the same switch on the 06's and pretty much all other hondas.

Why are you so concerned on the thrust bearings? There has been no reported pre-mature failures that I've heard of. What about all the other metal/metal surfaces that are dry during startup? rod bearing, main bearings, cam journals, cylinders, etc.

Also do you have data that shows any significant risk mitigation by cranking with and without the force from the PP ?

21337R

I think this is awesome! On my to-do-list for sure. Even if there wasn't a wear issue, I would do this mod. Like the op mentioned, it is just an idiot-proof safety device, If you are an idiot, don't do it. I can remember the funny looks on everyones faces when I started my 88 CRX from outside the car apparently 89 was the year they started doing this.. (Honda atleast)

After reminiscing about the good old times, I remembered the day that my clutch cable broke on my crx, I limped all the way home rev matching and avoiding stops. I did have to stop a few times and then would have to start it in 1st gear. Right now is the first time that I have ever realized that if I would have been driving 1 year newer it would not have even been possible.

EDIT #2: LOL.... crap... I just realized that with a broken cable that the pedal would still be pushing the interlock button which would allow for the engine to turn, scratch that last thought.