Overrev
So I messed up a bit and threw 1st instead of 3rd at the higher end of 2nd. Maybe like 75-80. Felt the higher than normal rev and the fuel cut off hitting immediately which dropped my speed with a quickness. I also kicked the clutch into neutral. The afterimage of the rev limiter showed 6800-6900. No lights or wired sounds just yet, thoughts?
|
Originally Posted by SGT_G
(Post 1598866749)
So I messed up a bit and threw 1st instead of 3rd at the higher end of 2nd. Maybe like 75-80. Felt the higher than normal rev and the fuel cut off hitting immediately which dropped my speed with a quickness. I also kicked the clutch into neutral. The afterimage of the rev limiter showed 6800-6900. No lights or wired sounds just yet, thoughts?
|
Originally Posted by Katech_Jason
(Post 1598866758)
Was the PDR running?
|
Originally Posted by SGT_G
(Post 1598866779)
No just saw the tach go partially into the red and kick back out.
Last season I had mechanical over-rev when going from 2-3 at 90mph and hit first. 9000rpm on the PDR data. I realized it very quickly and probably didn't even have the clutch fully engaged. I replaced valve springs as a precaution and checked the spring pressures, which were all within spec. |
Originally Posted by SGT_G
(Post 1598866749)
So I messed up a bit and threw 1st instead of 3rd at the higher end of 2nd. Maybe like 75-80. Felt the higher than normal rev and the fuel cut off hitting immediately which dropped my speed with a quickness. I also kicked the clutch into neutral. The afterimage of the rev limiter showed 6800-6900. No lights or wired sounds just yet, thoughts?
|
Originally Posted by Mr. Gizmo
(Post 1598867093)
sell it fast. I think this is what most of the ls7 owners do. Then the car runs fine for a while. They forget about the mechanical over rev that occurred then it drops a valve
|
Originally Posted by SGT_G
(Post 1598867114)
It's a C7Z not C6Z. I just never changed the picture of my old car.
|
Come on now..... stop trying to scare the hell out of the Op.
More often than not he will be fine. 6900 rpm will not likely hurt this motor. It is more likely the op could have damaged the transmission. I am betting neither was damaged. |
Originally Posted by dar02081961
(Post 1598867441)
Come on now..... stop trying to scare the hell out of the Op.
More often than not he will be fine. 6900 rpm will not likely hurt this motor. It is more likely the op could have damaged the transmission. I am betting neither was damaged. maybe / maybe not. If he was wringing it out in second gear. That’s probably close to 90 mph when he slammed 1st gear. All the more reason not to buy one of these dogs used. |
Originally Posted by Mr. Gizmo
(Post 1598867566)
maybe / maybe not. If he was wringing it out in second gear. That’s probably close to 90 mph when he slammed 1st gear. All the more reason not to buy one of these dogs used.
|
If it's not making funny noises, you're probably fine. I remember driving my 65 L79 back in the 70's. We stuffed two girls in the Vette with my buddy and I. I was 6 grand in 3rd gear, tried to hit 4th, but hit the girl's leg straddling the shifter and went into 2nd gear. The tach buried and it felt like i slammed the brakes on. I pushed in the clutch and it idled fine.
Never had an issue with the motor. Still have the 65. Still know the girl. |
|
Originally Posted by Clspht
(Post 1598867614)
You just can't miss an opportunity can ya... What a clown!
|
Happened to me at least 5 times!! For the life of me i cant understand why the 1st is so easy to shift compared to the 3rd!! Never happened to me before the C7z!!!
So anyway it ran fine each time afterward, so i wouldnt worry, because damage would be right away!! Changing valve springs is useless , unless it sounds like a broken spring. Mine dynoed 698whp and 757wtq 6 months after that and still run strong!!! btw a leak down test was performed also 6 months afterward, and was perfect!! A broken spring would have a caused a serious leak!! |
I had WS6 Trans Am and just did the heads and cam. I also put 4.73 gears in the rear end. First track night went from high 3rd down to 2nd instead of 4th. Springs were fine. Bent all the valves though, tough night. You would know if there’s a problem. Thanks
|
Originally Posted by jlbjr
(Post 1598868538)
I had WS6 Trans Am and just did the heads and cam. I also put 4.73 gears in the rear end. First track night went from high 3rd down to 2nd instead of 4th. Springs were fine. Bent all the valves though, tough night. You would know if there’s a problem. Thanks
|
Originally Posted by tertiumquid
(Post 1598868497)
Damned if I can understand the constant bashing of the car he owns. Maybe he really owns a Studebaker...
|
Without data to determine how high the motor was spun I would trust the guy that actually builds race motors for a living (Jason).
|
Originally Posted by Poor-sha
(Post 1598868775)
Without data to determine how high the motor was spun I would trust the guy that actually builds race motors for a living (Jason).
|
Originally Posted by timmyZ06
Maybe not everyone dont care about swapping valve springs for fun! Do you really think it will fail few thousands miles later??!!
|
All times are GMT -4. The time now is 07:07 PM. |
© 2024 MH Sub I, LLC dba Internet Brands