Knock Sensor

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This is a project I will be starting in the next couple months.  I plan on adding a knock sensor to my 2.2L bottom end that I'm currently working on.  The sensor will use a circuit that automatically adjusts its sensitivity based on engine RPM.  I want to run a 10:1 CR on my 2.2L engine so a knock sensor while not required, will be a good safety precaution.

I have two possible locations identified for the sensor placement.  One is the rear-most alternator bracket mounting bolt.  I could replace this bolt with a stud like on this Mini Cooper install:

The other possible location is where a coolant fitting was threaded into the block above the starter.  This location is further removed from the valve train but I need to figure out how to ensure there is no coolant leak.

 

 

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This site was last updated 12/29/09