engine and drivetrain Safety Wired Oil Pump sprocket nut for an M10?

[arminyack]

In my quest to determine what this clacking noise my engine makes at idle (see this thread), I put it up on the lift today, started the car, and further probed around with the stethoscope. Once I put it just underneath the crankshaft, the noise I heard from placing the stethoscope on the timing chain tensioner spout was MUCH MUCH louder...placing the scope on the oil pan around the oil pump sprocket area yielded the same noise.....it seemed like it was right there! So now my finger is now pointing at the oil pump chain....even though I had just a little less the 5mm of deflection when I assembled it. So this weekend in I go to investigate further....which got me thinking about that oil pump sprocket nut....I have seen photos of a safety wired version...but the only one I can seem to find is for E36 cars, which I am pretty sure use a LH thread. Would anyone know a source for regular thread M10 x 1,0mm nut that has the safety wire hole?

 

TIA!

[wegweiser]

We have a little fixture / tool at the shop, that is designed to hold a hex shaped fastener, so that it can be drilled. That's how I did mine. Make sure you have super quality drill bit(s)….it's a minor PITA to do. 

 

Photo of the tool and my own sprocket install.

 

https://www.pegasusautoracing.com/productdetails.asp?RecId=5738&utm_source=google&utm_medium=cpc&utm_campaign=3750-001&gclid=CNWb2d3thc0CFQusaQodPhcEbw

[kbmb02]

I made a mental-picture note of that photo when you first posted it, Wegy - well done. I don't think any of my drill bits would make the cut. (In the racing world, I use the 'correct' red thread-locker combined with a tap with the magic punch - admittedly, it feels odd to trust chemicals that much. But they work.) -KB

[arminyack]

8 hours ago, kbmb02 said:

I made a mental-picture note of that photo when you first posted it, Wegy - well done. I don't think any of my drill bits would make the cut. (In the racing world, I use the 'correct' red thread-locker combined with a tap with the magic punch - admittedly, it feels odd to trust chemicals that much. But they work.) -KB

That's why I made this post! I'm paranoid, I don't want to trust red threadlocker that much!

[TobyB]

I do...

 

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