S2000 Under The Hood S2000 Technical and Mechanical discussions.

Over-Rev Question?

Thread Tools
 
Old 12-27-2004, 10:59 AM
  #61  
Administrator


 
krazik's Avatar
 
Join Date: Oct 2000
Location: Santa Cruz, CA, US
Posts: 17,004
Received 6 Likes on 6 Posts
Default

actually your analogy is flawed.

The correct one would be.

You ate two pieces of candy and immediately worried that it caused a cavity so you went to the dentist for a cleaning and xrays that you really didn't nead because it takes a lot more than 2 peices of candy to cause a cavity. But it makes you feel better to spend the money on xrays, so more power to the dentist.

A valve adjustment, like a tooth cleaning is a good thing. You should have both of those done on regular intervals.
Old 12-27-2004, 12:53 PM
  #62  

 
xviper's Avatar
 
Join Date: Mar 2001
Posts: 37,305
Likes: 0
Received 16 Likes on 14 Posts
Default

Originally Posted by krazik,Dec 27 2004, 12:59 PM
A valve adjustment, like a tooth cleaning is a good thing. You should have both of those done on regular intervals.
Can we leave this debate with this statement?

Analogy aside, it's not worth getting our tails in a knot over. He got close to redline, maybe went over, mayby not. Maybe there was damage, maybe not. He's OK with the 90 bucks for a valve adjust and a "free" inspection by Billman. Let's put this on the shelf and wait to hear back after the work has been done. At that time, we can all either give a big sigh of relief or do an "Oops".
Old 12-27-2004, 02:23 PM
  #63  
Registered User

 
Jacko's Avatar
 
Join Date: Nov 2002
Posts: 9,984
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by 240toS2k,Dec 26 2004, 09:21 PM
-__- if the motor was accidently over rev'd and wasn't kept there for a long time... the motor should be FINE.... I've hit rev limiters for almost every kinda 4 cylinder KA24DE, SR20DET, D15, D16, B16, B18... and the list goes on including F20C. Engines are not as weak as some people think. If you accidently hit the redline, more than likely, you'll be ok, the rev limiter is there to keep an accident from turning bad. So unless you just don't take care of your motor... ie never changes oil, ect... the motor should be fine.
hitting the rev limiter and a mechanical OVER-REV are two very different things you can bounce off the rev limiter all day if you'd like but Mis-Shift
( Mechanical Over-Rev) there is nothing to stop it . That is what slipstream444
was trying to say just incase you didn't know or understand.

I agree with Xviper lets just hope nothing happen to Bigsalgt's
Engine and then we can all smile.
Old 12-27-2004, 02:27 PM
  #64  
Administrator


 
krazik's Avatar
 
Join Date: Oct 2000
Location: Santa Cruz, CA, US
Posts: 17,004
Received 6 Likes on 6 Posts
Default

Old 12-27-2004, 02:32 PM
  #65  
Banned
 
BroInTheKnow's Avatar
 
Join Date: Dec 2004
Posts: 151
Likes: 0
Received 0 Likes on 0 Posts
Default

FYI-
IMO if you went from 6th to 2nd you wouldn't worry about your engine bro...you would be more concerned with your transmission and hope that you didn't leave the clutch on the freeway somewhere. If you over-rev I doubt there will be engine damage, if any at all. Honda motors are made to spin at very high RPM's and can take that type of thrashing.

If you were at 65mph...no worries mate.
Old 12-27-2004, 02:34 PM
  #66  
Banned
 
BroInTheKnow's Avatar
 
Join Date: Dec 2004
Posts: 151
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by xviper,Dec 20 2004, 08:07 PM
Is this a pop quiz? OK, I'll bite.
Is it because #4 is the farthest away from the cooler coolant? By the time the coolant gets back there, it's the hottest it gets. Perhaps the #4 cylinder cooling jacket is always the hottest of all of them. Maybe that's why the temp sensor is located back there - to register the "worse case scenario"?

It might also mean that #4 is the closest to the downpipe of the exhaust manifold and the firewall which mean more hot air get's trapped there. When you're moving forward it's only safe to assume that the hotair is getting pushed there.

Hope this helps!
Old 12-27-2004, 07:46 PM
  #67  
Moderator
Moderator
 
Billman250's Avatar
 
Join Date: Jul 2002
Location: Long Island, New York
Posts: 22,124
Received 1,403 Likes on 840 Posts
Default

Originally Posted by BroInTheKnow,Dec 27 2004, 07:34 PM

It might also mean that #4 is the closest to the downpipe of the exhaust manifold and the firewall which mean more hot air get's trapped there. When you're moving forward it's only safe to assume that the hotair is getting pushed there.

Hope this helps!
This car has a factory header. There's no variation in placement...
Old 12-27-2004, 10:02 PM
  #68  
Registered User
Thread Starter
 
Bigsalgt's Avatar
 
Join Date: Aug 2004
Location: New York
Posts: 183
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by krazik,Dec 27 2004, 11:59 AM
actually your analogy is flawed.

The correct one would be.

You ate two pieces of candy and immediately worried that it caused a cavity so you went to the dentist for a cleaning and xrays that you really didn't nead because it takes a lot more than 2 peices of candy to cause a cavity. But it makes you feel better to spend the money on xrays, so more power to the dentist.

A valve adjustment, like a tooth cleaning is a good thing. You should have both of those done on regular intervals.
I like yours! If I had more time I could have worked out the kinks!
Old 12-29-2004, 12:19 AM
  #69  
Registered User
 
RACER's Avatar
 
Join Date: Oct 2003
Location: Knoxville, TN
Posts: 15,082
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by BroInTheKnow
FYI-
IMO if you went from 6th to 2nd you wouldn't worry about your engine bro...you would be more concerned with your transmission and hope that you didn't leave the clutch on the freeway somewhere. If you over-rev I doubt there will be engine damage, if any at all. Honda motors are made to spin at very high RPM's and can take that type of thrashing.
If you went into 2nd gear from 75-80+mph, you will float valves and damage will occur. If the engine doesn't get damaged, (reved within capability) the transmission will certainly be fine.
Old 12-29-2004, 08:22 AM
  #70  
Moderator
Moderator
 
Billman250's Avatar
 
Join Date: Jul 2002
Location: Long Island, New York
Posts: 22,124
Received 1,403 Likes on 840 Posts
Default

RACER


Quick Reply: Over-Rev Question?



All times are GMT -8. The time now is 03:18 AM.