First accidental downshift over-rev
#22
Registered User
Join Date: Aug 2003
Location: The Beach, CA
Posts: 5,372
Likes: 0
Received 0 Likes
on
0 Posts
All you need are titanium springs, retainers, dual valve seat locators for the limited amount of driving you do:
http://automotivespeed.com/product_info.ph...products_id=134
http://automotivespeed.com/product_info.ph...products_id=139
If you have valve damage, switch over to the lighter and less prone to burning nitride coated valves:
http://automotivespeed.com/product_info.ph...products_id=136
http://automotivespeed.com/product_info.ph...products_id=134
http://automotivespeed.com/product_info.ph...products_id=139
If you have valve damage, switch over to the lighter and less prone to burning nitride coated valves:
http://automotivespeed.com/product_info.ph...products_id=136
#24
I did the same thing last week. I didnt completely let the clutch out though, even though you dont need to for damage to occur. Anyways, I got the car looked at 3 or 4 days later. I took it to the dealership and said I heard extra valve chatter. They found some loose intake valves and proformed valve adjustment under warrenty. BTW, I have 05 w/13K. Best of luck w/your situation. better to be paranoid and check it out than to be sorry later
#25
Originally Posted by digs2k,Aug 1 2006, 09:50 PM
you dont need to for damage to occur
Quite right. If you have a good clutch, you can have full clutch engagement about 1/2 way up the pedal travel. In such cases, you are actually better off having a nearly toasted clutch.
#28
I did the something similar at the track a couple day ago.....I was suppose to go into 4th but went into 2nd for like 1/2 a sec...it happened on the 2nd session so I just kept on driving since it didn't throw any CEL and the engine didn't make any weird noise then.Anyway, after lunch I notice the engine idle rough but not too bad, but I kept on driving anyway....after 132 track miles....the car felt fine except on the drive home I notice the engine is making a funny noise and vary by the engine rpm....we thought it was a blown exhuast gasket but after we took the valve cover off for a quick inspection, both intake retainers were crack/scretch on number 4. So we are going to replaced all the retainers and keepers...and hopefully when we take off the cams...we will not see anything worst.
Anyway, I would recommend taking the cover off and do a visual inspect....it is real easy and if you see the retainer flush with the valve tip then you did some damage.
Anyway, I would recommend taking the cover off and do a visual inspect....it is real easy and if you see the retainer flush with the valve tip then you did some damage.
#29
Registered User
Join Date: Oct 2003
Location: Knoxville, TN
Posts: 15,082
Likes: 0
Received 0 Likes
on
0 Posts
^ Being that your retainers were cracked on #4, one or more valve stems may have lowered themselves a bit resulting in one or more valves not closing all the way which would explain the rough idle
#30
People keep remarking that they only did it for a "brief moment" or just "1/2 a second" or "I put it into neutral as soon as I could". It's becoming painfully obvious that this doesn't matter.
Have you heard of "rate of rise"? This normally refers to fire "heat detectors". If the temps rise at too fast a rate, the alarm goes off. This can be related to a mis-shift. It's not always how far above redline you got to. It can be how suddenly or quickly it can get there. The drive wheels can accelerate the engine far more suddenly and quickly than the engine can on it's own.
If you get rammed from behind by a semi when you're going down the road at 60, you won't get hurt if the semi was going 62. It would likely kill you if the semi was going 100 at the time.
Have you heard of "rate of rise"? This normally refers to fire "heat detectors". If the temps rise at too fast a rate, the alarm goes off. This can be related to a mis-shift. It's not always how far above redline you got to. It can be how suddenly or quickly it can get there. The drive wheels can accelerate the engine far more suddenly and quickly than the engine can on it's own.
If you get rammed from behind by a semi when you're going down the road at 60, you won't get hurt if the semi was going 62. It would likely kill you if the semi was going 100 at the time.