Over Rev past Redline?
Thread Starter
Instructor
Joined: Jan 2004
Posts: 178
Likes: 0
From: hamilton ontario
Over Rev past Redline?
I am taking delivery of a Zo6 this week.My last car(2001 Vert) had an automatic and I am happy to be manually shifting soon.My question is, What happens if you overrev on a downshift ( accidently as in a misshift from5th into 2nd) and the motor exceeds 6,500 rpm.I am aware the rev limiter protects the engine if you are going over while accelerating.I had an s2000 and know 4 cylinder cars with 4 valves per cylinder will experience catastrophic failure with a missed downshift and over revving.The rev limiter cannot protect it in those situations.Is this the same thing somebody will exoerience with an LS1 or Ls6 engine if they slip up.Of coarse this can be avoided by good concetration while racing.Thanks in advance if anyone wants to give me some imput! ;) :lurk:
Thread Starter
Instructor
Joined: Jan 2004
Posts: 178
Likes: 0
From: hamilton ontario
Re: Over Rev past Redline? (BillY2KFRC)
I thought so!I have a nuerological problem and sometimes my fingers go numb without me noticing.Not good when shiftig...Thats why my first Vette I bought in December was an auto.I missed shifting real fast and bought the new replacement,yesterday.It's nice to become a more active in the driving experience again.Thankyou ,as you can see I still have a lot to learn :chevy
Le Mans Master
Joined: Dec 2000
Posts: 6,312
Likes: 399
From: North Haven, CT
Re: Over Rev past Redline? (pure energy)
Enjoy the car, manual is the only way to go, just so much more fun. Even after the money that missed shift at the track cost me, I'd never drive an auto. :cheers:
Team Owner
Joined: Mar 1999
Posts: 28,753
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From: San Jose/Bear Valley CA
CA Events Coordinator
Re: Over Rev past Redline? (pure energy)
Couple of ways to prevent that is to use more braking and less down shifting at High RPM... remember that brakes are cheap for your car... trannys and clutch setups are not. My tranny and diff are in broken in 5 pieces right now... (not from over reving the engine) try buying those parts and you will think twice about being hard on the drivetrain.
VR :cheers:
VR :cheers:
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Re: Over Rev past Redline? (pure energy)
As you said, the rev limiter can't help because the engine is mechanically driven to very high rpm via the rear wheels to transmission via lower gear via clutch. Not good. Results could be, broken timing chain, valves, springs, etc.
Instructor
Joined: Dec 2003
Posts: 229
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From: Aurora Colorado
Re: Over Rev past Redline? (Chad954RR)
Tune your car and have them move the rev limiter up about 200. Helps. :cheers:
:confused:
[Modified by James G, 6:09 AM 5/19/2004]
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Drifting
Joined: Apr 2001
Posts: 1,763
Likes: 24
From: Austin TX
Re: Over Rev past Redline? (James G)
I did a 3-2 but quickly realized what i did and got back on the clutch. Engine was fine, but I have aftermarket springs and hardened pushrods.
[Modified by 66ImpalaLT1, 2:39 AM 5/19/2004]
[Modified by 66ImpalaLT1, 2:39 AM 5/19/2004]
Burning Brakes
Joined: Aug 2000
Posts: 889
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From: DFW tx
Re: Over Rev past Redline? (JerryL)
I agree with JerryL. A good shifter like the Hurst will provide a stronger centering force that will make it easier to hit the proper gear. The stock shifter is pretty bad.
Team Owner
Joined: Jul 1999
Posts: 50,808
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From: Buy USA products! Check the label! Employ Americans
Re: Over Rev past Redline? (pure energy)
Same deal bent push rods and valves :eek: $$ I use to let diffent people drive my car UNTIL one day I was racing someone I should have beat. Then I realized something was wrong. Bent valve :cuss They probably didn't even relize they did it. I didn't until I saw it down on power in a match up. Becareful as GM will not warranty it in most cases. They will have the data on the computer also.
