3.2 Sensor Damage Opinions?

[1972_911T]

Im about to transplant my newly rebuilt 3.2 engine into my 1972 911, I was test fitting my transmision as I had to make modifications for where the flywheel sensors go when I noticed some damage to one of the sensors as shown in the pictures. Do you think this sensor is toast and is there anyway I can test it before refitting the engine? as I bet there a pain in the ass to change with the engine in.

[ChrisBennet]

Look at the insulation on the wires leading to the sensor. Twist it a little like you are trying to unwrap hard candy and see if the insulation has cracks that open up. If the insulation is showing it's age, replace both sensors while you have the motor out.
-Chris

[1972_911T]

Hi Chris

The wires/insulation are in good condition, its just the dint in the lower sensor that im concerned about. If it does turn out to be toast is it possible to replace with the engine in?

Steve

[ChrisBennet]

Originally posted by 1972_911T
Hi Chris

The wires/insulation are in good condition, its just the dint in the lower sensor that im concerned about. If it does turn out to be toast is it possible to replace with the engine in?

Steve

It's a pain but yes, you can change them with the engine in. This is a good opportunity to take the out of the bracket clean them up and put them back with something to keep them from corroding. Antisieze or a silicone like Sylglide (like you use on brake calipers) or Dow Corning 111.
-Chris

[Lorenfb]

Avoid any future running problems and just replace the one as a minmum,
but replacement of both is better. The problems caused by marginal pickup
sensors can be difficult to troubleshoot.

[1972_911T]

As always you guys are probably right! No how the hell do you get these things out of the bracket the look fairly well coroded in?

Steve

[doug petty]

steve
remove the bolt on top of each sensor,
they just slide out of the holder.
piece of cake.
oh check the clearence at the flywheel teeth, forgot the amount don't have my bentley manual handy.

[1972_911T]

Thats the way there supposed to come out! tried that last night it was playing ball after 12hr soak in penetrating oil, do I have to resort to brute force?

Steve

[ChrisBennet]

They can be a ***** to get out.. Doug was lucky.
-Chris