GM knock sensor thread Options

[lagos]

is that an ATS TB inlet? looks nice. i ordered one last week!

Yup, I ordered that and the GM Knock Sensor Conversion for Doc to install. Along with the healthy dose of goodies that he's putting in the car.......should be really niiiiiiice.

i woudlnt recomend using the GM knock sensor. it dosnt work correctly for our cars and ats should stop selling it imho. keep the stock sensor.

[jgreening]

knock sensors work because they blow when detonation occurs rather than grenading your engine. The reason people switch to the GM sensor is because it is "stout" and doesn't blow as often as the Toyota one. Just what I want in a knock sensor

[Fastbird]

knock sensors work because they blow when detonation occurs rather than grenading your engine. The reason people switch to the GM sensor is because it is "stout" and doesn't blow as often as the Toyota one. Just what I want in a knock sensor

That makes no sense at all. The purpose of the knock sensor is not to defeat detonation by "blowing" as you seem to think. What the knock sensor does is detect knocking in the motor, relay what it's seeing to the computer, which in turn retards timing to get the motor to stop knocking.

The problem with the Toyota knock sensors is that they're not very hardy. One good bout of knock and you've got a dead sensor. Next time you end up getting knock, with a dead sensor not detecting it, you are at MUCH increased risk of damaging your motor. I can personally attest to the GM knock sensors putting up with a TON of knock and not even batting an eye, I've seen it myself both in car and on the dyno multiple times.

For the time being, I'm convinced that the GM conversion is a smart move.

[jgreening]

For the time being, I'm convinced that the GM conversion is a smart move.

Go read about the people on mr2oc.com that have blown up their 3sgte using the GM knock sensor. As for my comment, I meant that the Toyota knock sensor will blow under serious detonation event. Is this ideal? Of course not. Is it better than grenading your engine? Of course.

The problem with the GM knock sensor from the reading I have done is that it simply misses alot of detonation. Some posts have indicated that it is "listening" for a different frequency. I have no idea if this is true or not. What I do know is that I have read about more than a couple examples of broken ringlands with engines with the GM knock sensor.

This post has been edited by jgreening: Jul 10, 2006 - 1:46 PM