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Well here goes nothing (oe used sensors or new ac delco)

Old 01-12-2019, 12:22 PM
  #61  
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Originally Posted by KCS View Post
For the Gen IV blocks going into a Gen III car, I always drilled and tapped the hole for the Gen III knock sensors. Itís easy to do with the engine out of the car, but I have seen one guy accidentally drill all the way through.
Lol, talk about a bad day. In hindsight, I wish I didn't let my fear of doing exactly that stop me from drilling/tapping it... One day I'll dedicate a weekend and get this done and run some K sensors - only reason is because I want to tune the timing as well, not just the AFR. I don't have access to a dyno around here, and street tuning the timing for MBT without a knock sensor will be challenging... hell, it's challenging even with them. But at least then I can detect when someones knocking on the door....

First world problems.
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Old 01-12-2019, 01:59 PM
  #62  
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Originally Posted by KCS View Post
For the Gen IV blocks going into a Gen III car, I always drilled and tapped the hole for the Gen III knock sensors. Itís easy to do with the engine out of the car, but I have seen one guy accidentally drill all the way through.
obviously he most likely didn't mark his bit or his tape moved or something. 2 questions....

1)obviously measure how deep the hole is and make sure i paint the bit, but how much material is behind that hole? like how much margin do we have?

2)any reason why i couldn't drill say 1 mm to shallow and run a washer behind the knock sensor to really prevent from drilling too deep? maybe some blue loctite? shouldn't move
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Old 01-12-2019, 06:56 PM
  #63  
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I would measure the thread length on the K sensor first. No need to drill or tap any deeper than the threads are. Then use a drill stop (metal donut looking thing with a set screw) to set the depth when drilling. Itís a lot harder to screw it up that way.
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Old 01-12-2019, 08:05 PM
  #64  
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Originally Posted by s30.hybrid View Post
I would measure the thread length on the K sensor first. No need to drill or tap any deeper than the threads are. Then use a drill stop (metal donut looking thing with a set screw) to set the depth when drilling. Itís a lot harder to screw it up that way.
makes sense, better off buying a 20 dollar tool than a new ERL block, o wait, i cant........
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