Whoops. How to destroy an engine: 101

[Phuz]

YES.

never seen a nearly stock engine blown this bad
A couple of weeks ago, I was cruisin with my friend on a Sunday in his RSX-S. His only mods are: intake, exhaust, and a Hondata Flash. Well, he decides to drop the hammer and show me what his car has. He started redlining every gear. He was at about 7k RPMs in 5th, and for whatever reason, he decides to downshift into 4th. The gear box on a RSX-S is real close together and it's a 6 speed. So, instead of shifting to 4th, he accidentally shifted into 2nd gear right around 7k RPMs. All of a sudden, we hear a "boom" and it started to stink real bad. Right after that, we heard the chunks of the block falling out from underneith the car and hitting the chassis. The smoke got so bad we couldn't see infront of us, so he slammed on the brakes and pulled to the shoulder. We jump out of the car to realize his motor was on fire. Needless to say, we put the fire out before the fire truck came, and got a friend to pull us back home.

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[NutBucket]

REPOST POLICE!!

 

[Anubis]

hahahaha

 

[Lucky]

that story is quite different than what the driver said (pulling out of pizza hut)

 

[dighn]

what are those nuggets like things

 

[Heisenberg]

Originally posted by: dighn
what are those nuggets like things

I think those used to be the pistons.

 

[Phuz]

Originally posted by: dighn
what are those nuggets like things

Supposedly his pistons. I dunno how true/possible that is, though.

 

[BCYL]

How can you "accidently" shift into 2nd and not know it??? stupid stupid mistake...

I guess all the excitement got into him... @7k rpm in 5th gear, he must have been going pretty fast by then...

 

[BadNewsBears]

Thats what happens when you throw a rod gentlemen. Rod cap went thru his pan like a bullet.

 

[EvanGeliSt]

ouch ouch ouch ouch ouch....

 

[Phuz]

Originally posted by: BCYL
How can you "accidently" shift into 2nd and not know it??? stupid stupid mistake...

I guess all the excitement got into him... @7k rpm in 5th gear, he must have been going pretty fast by then...

Its possible, the gear box is VERY tight..... but... to actually let it engage.... whoops.

 

[Angrymarshmello]

http://subscriber.anandtech.com/messageview.cfm?catid=38&threadid=1060810

 

[geno]

Originally posted by: BCYL
How can you "accidently" shift into 2nd and not know it??? stupid stupid mistake...

I guess all the excitement got into him... @7k rpm in 5th gear, he must have been going pretty fast by then...

as said in the other thread, it's easy to do in the RSX, 4th and 2nd are very close

 

[geno]

Originally posted by: Angrymarshmello
http://subscriber.anandtech.com/messageview.cfm?catid=38&threadid=1060810

I laugh at your subscriber link

 

[Angrymarshmello]

Originally posted by: geno

Originally posted by: Angrymarshmello
http://subscriber.anandtech.com/messageview.cfm?catid=38&threadid=1060810

I laugh at your subscriber link

I laugh at your slow non-subscriber link

 

[Freejack2]

Don't most cars have rpm limiters that cut off fuel when a certain rpm is exceeded? I know in my car if I redline the car it'll cut the fuel.

 

[geno]

Originally posted by: Freejack2
Don't most cars have rpm limiters that cut off fuel when a certain rpm is exceeded? I know in my car if I redline the car it'll cut the fuel.

yes but when you are traveling at a high speed and shift into a gear that'd set the motor at 13000 RPMs, rev limiters do nothing since the wheels are driving the motor, rather than the motor revving itself up.

 

[Phuz]

Originally posted by: Freejack2
Don't most cars have rpm limiters that cut off fuel when a certain rpm is exceeded? I know in my car if I redline the car it'll cut the fuel.

I didn't know this was a repost..

But anyway, a rev limiter won't do anything at that point because the wheels are driving the engine. Cutting power won't stop the momentum thats already been generated.

 

[geno]

Originally posted by: Angrymarshmello

Originally posted by: geno

Originally posted by: Angrymarshmello
http://subscriber.anandtech.com/messageview.cfm?catid=38&threadid=1060810

I laugh at your subscriber link

I laugh at your slow non-subscriber link

It's plenty fast for me, I'm sitting behind 3 T3's

 

[Phuz]

Hey geno, how fast is that CSX?

 

[H34D0N]

SWEET JESUS!!!!

 

[Mookow]

Originally posted by: Freejack2
Don't most cars have rpm limiters that cut off fuel when a certain rpm is exceeded? I know in my car if I redline the car it'll cut the fuel.

Cutting the fuel doesnt help any when the wheels are spinning too fast for the motor in the selected gear.

 

[Vic]

Yes, this is a repost. No, a rev-limiter wouldn't have saved him, edit: and the RSX's do have rev-limiters. Yes, this is a different story than in the other post.

7,000 rpm in 5th gear in a RSX-S is just under 129 mph (just below the vehicle's top speed of ~135). Dropping straight into 2nd at that speed (like a total dispsh!t n00b) would actually send the engine to ~16,188 rpm. Good night!