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SR20DET OPERATING TEMP AT RACE TRACK


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#1 jessejames

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Posted 25 September 2010 - 05:07 AM

I'm seeing 210F at the track and I pit in. Usually on the Street i'm between 180-190F. How how is too hot for these motors? Thanks
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#2 mario_82_ZXT

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Posted 25 September 2010 - 08:37 AM

210 or 215 is when the electric fans kick on in a FWD SR20 so I think you're probably OK.
Unless you're getting detonation from the heat issues...
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#3 RS Speed

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Posted 28 September 2010 - 02:03 PM

Pretty good actually considering you are on the track. Whats ambient temp like?

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#4 69sroadster

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Posted 05 June 2012 - 05:52 PM

My ZX JDM gauges are in metric, but they were showing 125ish Celcius on oil and water at Hallet over last Memorial day weekend. The outside temps were in the 90's Fahrenheit I think, off track. My SR ZX normally runs around 100-110 C on normal driving with the A/C on. I was interested in this response too given the higher temps I thought I was seeing. I'm not 100% certain that they are calibrated to the SR water temp sensor nor that the oil temp sensor is spot on too.
If you're not breaking things then you're probably not having enough fun.
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1969 2000 Roadster future project

#5 TheMission

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Posted 05 June 2012 - 09:09 PM

I see 180-190 on the street on hot days and my first speed kicks in at 183 and the second speed at 193 and I rarely ever see over that.

Oil temps are consistently 200-210.
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#6 VKLR

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Posted 08 June 2012 - 03:33 PM

So what thermostat is everyone using? I'm running stock tune, boost and a 180 degree thermostat. When I get a z32 MAF, injectors and a good tune what thermostat would be ideal? For street use.

My cooling system is currently working very well. No problems just looking for the sweet spot on temp.
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#7 logr

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Posted 11 July 2012 - 06:15 AM

Where is your sensor? If you read it in the outlet neck, it will be hotter as that is before it is cooled back down by the radiator. I have one there and the stock one too. The neck one sees 220 fairly easily but the stock one stays in the middle.

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#8 69sroadster

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Posted 20 December 2012 - 04:07 PM

i'll have to look at where i have the sensor plugged in since I can't remember.  Since this post I haven't been to the track again yet, but I have swapped in a generic (read chevy) aluminum radiator that fills in the frame rails in the ZX and put in a thunderbird 18" monster electric fan.  I've never got the higher speed to kick on with the fan due to a sticky solenoid, but i've never even come close to needing it either.  I have to say that fan is awesome for flow but damn sharp edges.  I also had to spray out some oil from everything up there since my oil cooler line busted and clogged up some fin cooling area.


If you're not breaking things then you're probably not having enough fun.
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1979 Fairlady 280ZX 2+2 SR20DET daily driver/SCCA cone crusher
1969 2000 Roadster future project

#9 dislexicdime

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Posted 20 December 2012 - 07:42 PM

My sr 510 use to see 205 to 210 on long hard freeway pulls 180 190 normal driving

#10 johnc

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Posted 21 December 2012 - 08:36 AM

The fan doesn't matter once your speed gets above about 25mph.  210F on a race track is normal.


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#11 69sroadster

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Posted 31 August 2013 - 12:19 PM

Thanks for the info on track temps.  For daily driving, I rarely run the fan below 25 mph unless I have my a/c on.  I also have a pusher fan I'm going to move over to in front of the oil cooler for when it starts to get really hot under sustained boost levels.


If you're not breaking things then you're probably not having enough fun.
2006 Buick Rendezvous family hauler
1979 Fairlady 280ZX 2+2 SR20DET daily driver/SCCA cone crusher
1969 2000 Roadster future project

#12 69sroadster

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Posted 26 October 2014 - 08:55 PM

After my latest track day at AMP, I have to revise now.  Running VR 20w50 oil in 80's temp I was seeing around 95 c normal driving and about 115c on the track with about 10-20 minutes of all out racing.  The coolant temp this time was a surprise to me.  It was normally not much higher than usual sitting around 70c but there was a time when it went up closer to 100c.  I thought what the...why not try turning on the fan despite the speeds and see what happens.  It dropped the temp down very quickly again to 70c.  I didn't expect that given the speeds around the AMP track anyways.  Now that I think about it the coolant temp may have spiked this particular time when I blew off some of my vacuum lines.  Too bad the Go Pro didn't actually take video to watch and learn from.


If you're not breaking things then you're probably not having enough fun.
2006 Buick Rendezvous family hauler
1979 Fairlady 280ZX 2+2 SR20DET daily driver/SCCA cone crusher
1969 2000 Roadster future project




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