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  #11  
Old 11-05-2018, 07:04 PM
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Quote:
Originally Posted by crystalworks View Post
Logic 7 modified thermostat. I have one here on a shelf waiting to go in when I do my cooling system refresh. Unfortunately it's pretty expensive for a thermostat. But if it saves other components in the future I suppose it pays for itself.

Coller Thermostat | BMW LOGIC7
Man that's expensive
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  #12  
Old 11-06-2018, 02:17 AM
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Yes it is, but can you swap just the t-stat portion out of an older M62 and place it in the newer housing, will it fit?
Also people are modifying t-stats by heating up the spring with a torch for 45+ seconds to bring the open temp down to the desired temps.

I've got a new one I may try this experiment on and then test it's open temp until I nail it.
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  #13  
Old 11-06-2018, 05:17 AM
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I've fitted an 88DegC thermostat without any electrical sensor - temperature now sits quite happily between 95-97degrees - been like this for well over 4000 miles with zero issues.
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  #14  
Old 11-06-2018, 05:35 PM
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Originally Posted by V8 00USH View Post
I've fitted an 88DegC thermostat without any electrical sensor - temperature now sits quite happily between 95-97degrees - been like this for well over 4000 miles with zero issues.
Great news!! What model did you end up using, and what year 4.4 do you have?

It looks like there are plenty of options for the older m62, anyone have the dimensions of that t-stat without the housing?

I can't get out of my head that $200 is ridiculous money for a 2004+ M62 t-stat.
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  #15  
Old 11-06-2018, 05:51 PM
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Originally Posted by HansBeamers View Post
I can't get out of my head that $200 is ridiculous money for a 2004+ M62 t-stat.
2004+ is N62. I agree the Logic 7 thermostat is ridiculously expensive. But it is what it is.
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  #16  
Old 11-07-2018, 07:05 PM
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What needs to be done on the N62 to keep an engine light from tripping? I think the connector that goes to the themostat housing is a t-state wax heater connector, unless it is also a resistance measurement circuit as well.

Thanks for all the replies!!
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  #17  
Old 05-20-2020, 11:13 PM
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Originally Posted by V8 00USH View Post
I've fitted an 88DegC thermostat without any electrical sensor - temperature now sits quite happily between 95-97degrees - been like this for well over 4000 miles with zero issues.
My 4.6 seems to run more at the 99c range and my e38 4.4 runs 91-93c...
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