Over revved engine
#21
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#22
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Originally Posted by 2003AP1' timestamp='1337747006' post='21721930
I believe in an AP2 you are fine if you over rev the motor.
If you are driving an AP2 that revs to 8k, you are fine on a one gear over-rev. DO NOT go to a shop for any inspection, you dont need it. Fact.
Lots of bad recommendations in this thread.
This is what I was referring to in my post above.
#23
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Join Date: Aug 2011
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Well, I haven't got any type of inspections done and I'm driving an AP2. I've been driving it around carefully recently just to see if I notice anything "different". Everything seems good so I think I'll go with some of your recommendations of not having it inspected since apparently, the AP2 can handle a little bit more abuse than the AP1 drive train.
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I take "one gear over-rev" to be 4 to 3 but not 4 to 2, which I don't even see how 2 gears could ever happen.
#26
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Well, I haven't got any type of inspections done and I'm driving an AP2. I've been driving it around carefully recently just to see if I notice anything "different". Everything seems good so I think I'll go with some of your recommendations of not having it inspected since apparently, the AP2 can handle a little bit more abuse than the AP1 drive train.
#27
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Yes one gear is 3-2, 4-3, etc. So yes a 2 gear, such as 4 to 2 would be near impossible. But 5 to 2 is possible if you are really not paying attention
AP2 at 8k plus over rev = 9500. No harm done.
AP1 at 9k plus over rev = 10500. Harm done.
AP1 retainer will split at 9700.
I estimate it would take 11k or better to split an ap2 retainer. At that point, the exhaust valves would have hit the pistons at 10700 and it would run like crap.
Hence why ap2 can take it.
AP2 at 8k plus over rev = 9500. No harm done.
AP1 at 9k plus over rev = 10500. Harm done.
AP1 retainer will split at 9700.
I estimate it would take 11k or better to split an ap2 retainer. At that point, the exhaust valves would have hit the pistons at 10700 and it would run like crap.
Hence why ap2 can take it.
#29
First Billman is the man I would listen to his advice before anyone else. The AP2 valve system is better (as billman said) and it takes alot more for them to crack (as billman said) if you just want to clear your mind, go buy a compression tester it's very easy to do, and a leak down tester. Do both tests and then get back on the road because the engine is probably fine.
http://robrobinette.com/S2000Compression.htm
http://robrobinette.com/S2000Compression.htm