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Old 05-29-2020, 11:46 PM   #4 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
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Quote:
Originally Posted by EcoCivic View Post
Thanks. Honestly with my Mishimoto radiator my cooling system worked so darn well the way it was that I wouldn't see the improvement, even on a 100 degree day with the AC on the coolant temp sits right at the thermostat's temp of 182-186 degrees like it does in the winter. Without a thermostat, my cooling system would actually overcool the engine down to about 160 degrees even driving down the highway using the AC on a 100 degree day, which is darn good IMO.

I suppose once I finish my fan shroud, install ducting, and reinstall the bumper cover I will pull the thermostat out again and see if the cooling system could cool the engine even more after these mods, I think it will. Did you notice a cooling improvement when you did this?
I did think I noticed an improvement. My temps were better and I needed my fan less often. But it was not an objective test. Just my sense on my daily commute, which I have done the same way in the same car, on the same route all week for 11 years now. I felt confident it was a good mod.

A half inch between the radiators sounds right to me, btw.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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EcoCivic (05-29-2020)