tr7v8mike Michael Booth Sydney, Australia (18 posts) Registered: 02/22/2015 10:26PM Main British Car: 1981 TR7 Rover 4.6 |
Knock sensor
Hi,
I'm looking to fit a knockSenseMS knock sensor to my S2 4.0L engine but I'm struggling to find a good spot. Can anyone suggest an appropriate location or, failing that, a spot I can drill and tap (safely)? Thanks Michael |
Re: Knock sensor
The factory knock sensors were on a boss adjacent to the center core-plug on each side of the block - surely that's a good stating point? If you don't have a boss, then you'll need to get creative.
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tr7v8mike Michael Booth Sydney, Australia (18 posts) Registered: 02/22/2015 10:26PM Main British Car: 1981 TR7 Rover 4.6 |
Re: Knock sensor
Hi Dave,
I found the holes but they are quite a bit bigger than the aperture in the sensor I have. I guess my options are 1) epoxy a bolt into the hole, grind it off flush, then drill and tap it. 2) Bolt a block of aluminium to the hole with the bolt head recessed then bolt the sensor to the block 3) Grind off the lip on the sump pan and fix the sensor with one of the sump pan screws 4) Can I just epoxy the sensor on? or is that just way too lazy |
Re: Knock sensor
By virtue of what the knock sensor is, and how it functions, mounting it in epoxy, or the bolt that it attaches to, mounted in epoxy, is by far NOT what you want to do.
Personally, I'd machine an insert to thread into the hole, and accept the sensor, or another option is to drill out to 3/8" NPT (or whatever size works), wind in an aluminum taper plug with red Loctite, and then drill-tap that to accept the sensor, The taper thread will definitely hold well and fully transfer the micro vibrations. |
waterbucket Philip Waterman England (112 posts) Registered: 07/30/2011 01:08PM Main British Car: 1972 MGB GT |
Re: Knock sensor
Have you tried looking for a knock sensor with a bigger hole? I have two Jaguar AJV6 engines one is a 2001 and I think they have a 12mm hole the later engine has smaller holes from memory 8mm. Both sensors are made by Bosch and I am told they are equally effective.
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