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      04-27-2019, 03:08 PM   #239
mattfwalters
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Drives: 06 Z4MC (Sepang/Sepang/insane)
Join Date: May 2014
Location: Vancouver, BC

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Quote:
Originally Posted by Michael9218 View Post
Bummer to hear about this. Odd that it didn't start to make noise at high rpm on the dyno.
Agreed. My working theory is that something clogged an oil passage when the oil and metal cooled down, but also the car just passed the “clunk” test on all six pistons and it doesn’t knock when I spin it on the starter so.. not sure if that means anything other than “it’s not so so bad yet”. I’ve clearanced the heat shield and transmission wart that were interfering with the headers but also found that one of the header O2 sensor bung plugs is leaking - got one of Driven’s analysis kits and am going to send a sample in to get their thoughts on what’s in the oil before we do anything else. We’ll see.
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