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Old 08-22-2018, 11:44 PM   #4
20181le
 
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Drives: 2019 ZL1 1LE Coming Soon!
Join Date: Jun 2018
Location: Wrenching on car!
Posts: 49
This is good advice. Never seen a fairly new stat go bad on its own.

Quote:
Originally Posted by BMWM.D. View Post
Just be careful. I pulled mine out and found the O-ring just sitting inside the thermostat housing. I’m not totally sure if this was somehow causing it to jam shut, or if I had a problem with the wax element. But that Mishimoto thermostat was my issue and could have caused major issues had I not been paying attention.

The older Mishimoto design (and pretty much all others) use a seal design that is notorious for coming apart. I got the newer style Mishimoto which uses an OEM style gasket. I figured this would be reliable, but I was wrong.

I ended up going with a billet housing that uses any LS3 style thermostat. I should have done that from the start.

Here’s what my Mishimoto looked like when it came out. And the billet housing installed.
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