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  #1  
Old 05-19-2006, 05:51 AM
sky4ty sky4ty is offline
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engine temp

does anyone know what the motor's operating temperature is for r33 rb25det??
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Old 06-20-2006, 06:36 AM
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Derby Derby is offline
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Re: engine temp

The normalised engine operating temperature is between 85 and 93 degrees celcius (185 and 200 degrees fahrenheit) But that is a figure for all manufactures. It differs from one brands to another, but it won't be higher then 200 fahrenheit.

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Old 06-20-2006, 01:12 PM
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Re: engine temp

I have seen some as low as 160 and as high as 210, but Derby is correct, in that ballpark. Not the RB25, just engines in general.

My RB runs a lottle on the hot side, I would say 190, if I had to guess, comparing it to were other skylines I have been in.
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Old 06-20-2006, 01:29 PM
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Re: engine temp

I know Mercedes tries to keep at 192.

And most of the manufactures set the max at 230.
That should help.
@SkylineUSA. A higher water tempurature ruins efficiency. I have seen test results for a engine that was kept at 1290 F and the efficiency was horrible because all the heat generated by the burning fuel was flowing back into the material around the flame (piston, cilwall)

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Old 06-20-2006, 01:35 PM
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Re: engine temp

1290, That is a bit hot.

I can see there is a point were it will ruin efficiency. If I remember correcetly, the Older EFI Mustangs ran a little over 200f.
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