S2000 Under The Hood S2000 Technical and Mechanical discussions.

Just replaced my retainers due to over-rev

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Old 06-11-2010, 08:46 AM
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I once overreved or thought I did. I caught it before it bounced off rev limiter or anything so believe I saved it. Never checked retainers since but it has been years and tens of thousands of miles since then.
Old 06-11-2010, 10:03 AM
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Originally Posted by MikeyCB,Jun 11 2010, 09:09 AM
Did you catch it before you heard it bouncing off the rev limiter? you actually have a decent amount of time to catch your error if you're quick back on the clutch. It sounds as though you may have only let the clutch partially out before noticing your mistake, or the clutch slipped slightly (in your favor).
If you shifted from 3rd to 2nd at red I believe you'd pass right through the 'rev' limiter and the motor would over rev. Would it not?

The rev limiter from my understanding is a fuel cutoff and no more.
Old 06-11-2010, 10:43 AM
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There is no "rev-limiter" when you're dealing with mechanical overrev.

CourageOO7, it's entirely possible that you pressed the clutch before it grabbed fully. If you had fully engaged the clutch in 2nd at 90mph, that would have been ~12.5k rpm, which would have resulted in a catastrophic failure.
Old 06-11-2010, 12:48 PM
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Originally Posted by SpitfireS,Jun 11 2010, 10:30 AM
CourageOO7 Posted on Jun 11 2010, 06:25 AM

Can you post pictures?
Especially of the slighty stretched one.
Please

Was this your first ever overrev?
Yeah, this was my first over-rev. I don't think posting a picture will help because you will need to be quite close to the stretched retainer to even notice it's different from the others.

There are many pictures of stretched/cracked retainers all over S2ki, fyi.
Old 06-11-2010, 12:52 PM
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Originally Posted by Moddiction,Jun 11 2010, 11:46 AM
I once overreved or thought I did. I caught it before it bounced off rev limiter or anything so believe I saved it. Never checked retainers since but it has been years and tens of thousands of miles since then.
Yeah, that's the thing about a mechanical over-rev from an unintentional downshift. There is no rev-limiter to save you. I think you're referring to redline. And yeah, I blew past redline in a hurry.

I was banging off the rev limiter while accelerating at the track in 3rd gear. I shifted to 2nd unintentionally (I've only shifted 3rd to 4th 2 billion times in my life).
Old 06-11-2010, 12:55 PM
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Originally Posted by jeffbrig,Jun 11 2010, 01:43 PM
There is no "rev-limiter" when you're dealing with mechanical overrev.

CourageOO7, it's entirely possible that you pressed the clutch before it grabbed fully. If you had fully engaged the clutch in 2nd at 90mph, that would have been ~12.5k rpm, which would have resulted in a catastrophic failure.
Agreed. I still can't believe there was no catastrophic failure. Honestly, I was looking forward to telling my wife that I had no choice but to buy a new 2.2L engine (I have an AP1).

However, this motor has endured so much abuse. I am almost emotionally attached to it. It just keeps going and going and going and going...hehe

I did pass a 911 GT3 at that event, though...
Old 06-11-2010, 09:55 PM
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[QUOTE=CourageOO7,Jun 10 2010, 10:14 PM]Oh, I didn't do a valve adjustment.
Old 06-11-2010, 09:58 PM
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Originally Posted by dantediss,Jun 10 2010, 09:38 PM
I just adjusted my valves tonight..same boat as you..just quick question..when you adjusted your intake side did you do it at a number 8 ? just curious, cus im seeing other people say it should be 10?
Look it up - I'm pretty sure the spec is 0.008" to 0.010" for the intake side (AP1 - not sure about AP2).
Old 06-11-2010, 10:07 PM
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[QUOTE=CourageOO7,Jun 11 2010, 07:26 AM]Thanks for the advice guys.
Old 06-12-2010, 06:39 AM
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[QUOTE=CourageOO7,Jun 11 2010, 02:55 PM] Agreed.


Quick Reply: Just replaced my retainers due to over-rev



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