What is a "knock"? Is it something you feel or hear? Or is it like a power drop on a dyno chart? Thanks

 

you'll see it using evoscan..

Knock = detonation = Car not running smooth...

The more aggresive, with no knock will make the most power.

When the car knocks it pulls timing, which will take away from power.

Easiest way to explain it, its a bit more complex than that.


Cheers!

 

yeah what he said

 

Thanks for going easy on me lol

 

No ones born with information

Better to ask and get an answer than give inaccurate information later..

 

for a better explanation.

http://en.wikipedia.org/wiki/Engine_knocking

 

Everyones gotta learn somewhere, no need to bash =)

 

yes this is a FRIENDLY forum

 

shoot, ya'll know that most people on this forums would've told him to "use the seach button you noob"

sad this forum is usually like that

 

really bad knock:
http://videos.streetfire.net/video/M...ock_152240.htm

the worst knock:
http://videos.streetfire.net/video/K...rrrr_96293.htm

 

that is not the knock he is asking about. Spun bearing yes. but Knock as in detination//pre ignition is what I think he is talking about. Those videos might confuse him. If your logging any knock counts it doesnt mean the car will sound like those videos (because the videos are basically blown motors) Most of the time you dont even know when your getting knock unless it is really bad or being logged

 

That is rod knock, which is when you spin a bearing or stretch a rod bolt.

 

http://www.mitsubishiforum.com/m_42371/tm.htm read. im sure this may get deleted but rather than posting a book in here