I hate mustangs too, but id help you in a situation if you really needed it

 

Just out of curiosity, if you have you rev limiter set to say 6500 rpm and you over rev to 8000 or beyond will you have these issues? I thought that is what the rev limiter was supposed to prevent?

Please educate me.

Thanks.

 

Manual overrev by going back into the last gear. No rev limiter can stop the mechanical force of it. Imagine what rpm you would be at in first gear at 65mph if you were to go from 2nd to 1st gear

 

Lol. Thank you good sir.

And btw I love termis and the mach 1, would love to own either.

 

The pre-deterrmind rev limiter will work say if you're accelerating in a particular gear and you run that out to the set limiter - The computer then cuts ignition and/or fuel to keep the motor for revving any higher.

What happens in an over-rev situation like this is if you are moving too fast for a particular gear. OP was in 3rd accellerating and accidently shifted into 2nd instead of 4th - at that speed it is far greater than that gear was designed for and much higher than the rev limiter. Once accidentally shifted into 2nd and the cluch was let out, the road speed FORCED the motor to spin beyond designed.

Massive failure to valvetrain results.

 

I know in this situation I'd want some help. I will toss some funds to the donation pile if one is setup. We got you bro!

 

so i took a look. 4 exhaust rocker arms out of place. nothing else wrong.... lol

posting up pics once they upload

 

Very lucky. I bet that made your day.

 

 

i wish i could see a picture of your face when you were about to pull the cover off. probably nervous as hell to see what was under it. then to see only that!

 

its like when you wake up one morning, and somebody you dont know is in the bed with you, and you dont remember last night, and your about to look...

lol. i am SO relieved for now. if i replace the rocker arms and my car works again like normal i will be eccstatic.

ill also return any donations if the car is fine after i fix it since i wont need the money, but i do appreciate it very much for all the help.

 

damn lucky man, I wonder why lnf's are so susceptible to this

 

im going to do a compression test after i fix the rocker arms just to make sure but from the looks of it i think it will be fine.

 

I'm lost when it comes to engine internals.. I dont even know what to look for in those pics, let alone finding whats wrong lol
Can someone point it out?

PS- good luck, hope you get her up and running!

 

Blue is bad, green is good.

 

Thanks for the education and good luck Dart putting your car back together. I'm eager to see the results from the BNR after you get it running again.

 

If it threw the rockers but the springs stayed together, it's probable that there is no damage to the tops of the pistons right? What about the rings if those are the exhaust valves not opening, wouldn't the cylinder pressure blow out the rings?

 

dam that sucks man. i did this once but i didnt get off the clutch all the way, oh and i did this to a brand new fusion messing around with auto stick down shifted to much when i tried to race bike. car was bought came back with broken lash. lol

 

someone else said they lost 2 exhaust side rocker arms on the same piston but his rings didnt fry. dunno why. anyway, i really hope i didnt, but now i know why my car was backfiring like crazy

 

From the looks of it, he just blew a rocker on each cylinder. Since there are 2 exhaust valves per cylinder it should be fine as it was still venting, just extremely inefficiently. If I were him, I'd def inspect the rockers and lash adjusters though. When I overrevved mine, one of the lash adjusters seized up and blew apart the rocker. I would hate for him to reinstall them and him have a seized lash adjuster or two(a $10 part) and destroy a $20 rocker as well.

 

Nevermind, I see cylinder 3 had no rockers. Ouch...I hope the best of luck to you though OP!

 

wow, mine was only one Exhaust, cylinder #3

 

so i took off my intake manifold, there is soot where cylinder 3 and 4 are supposed to be. some soot on the throttle body too, but not a whole lot.

so what does that mean?

 

its blowing back into the intake?

 

That sounds right, I mean where else is the exhaust going to go? I at least had one more exhaust valve still working, so exhaust still routed out of the cylinder, just not as efficiently. Did you check the top of the pistons and in the chamber?