Hello,
I am building my R33's Rb25det from the ground up, and with this I had wiring specialties produce a brand new harness, with this I decided it was a good idea to replace the stock narrow band knock sensors with the link knock sensors PN:LINK-101-0053 for my G4X.
My predicament is the fact that the Donut style sensor accepts a smaller bolt diameter than the standard location. I only see two options here show in my images below.
Reference, Hole 1 is a smaller, and an (I think) unused hole... Hole 2 is the stock location knock sensor hole.
1. Run the sensor in the non standard hole (hole 1) with a smaller M6 size bolt (I think that is the size). My worry here is that not matching the donut with a bolt to match the bore will reduce the effectiveness of the sensor, also the location is not ideal not being on Cylinder 2 rather cylinder 3 close to the other sensor. However the machined surface should provide good results.
2. Run the sensor in the stock location with a thread in size adapter. My worry with this is if the thread adapter is brass it could reduce the sensor effectiveness acting as an insulator, similarly a steel one might do the same.
Am I being overly cautious? The last thing I want is to get the build in the car and notice my knock sensors are not functioning appropriately.
Thank you for any feedback!