Coolant Temps
05-02-2007, 03:03 PM
#1
Boost Czar
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Coolant Temps
What are your typical coolant temps?
The reason I ask is because I was sure I put in a 180° thermostat. However I seem to idle to about 160-165°, and never seems to get anywhere above 172-175° during boosted runs and always settles back to about 165°
If that's the case then I did something right with my homemade scooper, but I take it either my thermostat is acutally a 160° model, or my easy therm settings are incorrect.
The reason I ask is because I was sure I put in a 180° thermostat. However I seem to idle to about 160-165°, and never seems to get anywhere above 172-175° during boosted runs and always settles back to about 165°
If that's the case then I did something right with my homemade scooper, but I take it either my thermostat is acutally a 160° model, or my easy therm settings are incorrect.
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05-02-2007, 03:07 PM
#2
I have a 180* thermostat as well.
I see around 160-165 at idle in MT. Cruising with some light boost on and off i stay around 178*.
Yesterday I really got on it. Found a new neighborhood with houses being built in the far corners. It's my new wannabe racetrack. I got the temps up to 203* driving around that little "track".
Sometimes i think my Easytherm values are wrong but cruising with light boost staying around 178* makes sense to me. I don't have a scooper or anything but need one.
I see around 160-165 at idle in MT. Cruising with some light boost on and off i stay around 178*.
Yesterday I really got on it. Found a new neighborhood with houses being built in the far corners. It's my new wannabe racetrack. I got the temps up to 203* driving around that little "track".
Sometimes i think my Easytherm values are wrong but cruising with light boost staying around 178* makes sense to me. I don't have a scooper or anything but need one.
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05-02-2007, 03:23 PM
#3
190-194 whenver the car is moving- cruise or boost. That's with a 180f tstat, 16psi rad cap and big *** rad. I've got the a/c condenser in front of the rad, with the IC and oil cooler stacked on top of eachother in front of that.
Anybody have oil temps in correlation to coolant temps?
Anybody have oil temps in correlation to coolant temps?
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05-02-2007, 03:47 PM
#6
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yes but oil temp will change quite a bit faster than coolant temp. When boosting for example, the oil temp spikes quite quickly before the cooling system brings it back down.
This is why people like external oil coolers, to prevent these temperature spikes particular to oil.
In a steady state case, yes the two tempeartures will show similar trends.
This is why people like external oil coolers, to prevent these temperature spikes particular to oil.
In a steady state case, yes the two tempeartures will show similar trends.
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05-02-2007, 04:11 PM
#9
So are you guys saying your fans never come on? Doesn't the OE fan controlled by the send at the top of the thermostat housing come on at about 97C which would be about 206F.
I beleive that the link won't do any tuning until the coolant temp is at 80C which is 176F.
Something doesn't jiv
I beleive that the link won't do any tuning until the coolant temp is at 80C which is 176F.
Something doesn't jiv
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05-02-2007, 04:24 PM
#14
I know when looking at the coolant temp on the link I'll 97-98C when the fan turns on. So the temp switch at the thermostat controls the fans and the coolant sensor is at the back of the block. so this should be pretty accurate right?
With the MS and the factory coolant sensor don't you have to do some trickery to make it work? Maybe something is being lost in the conversion.
I'm just going off the information that FM supplies in their install and tuning manual.
With the MS and the factory coolant sensor don't you have to do some trickery to make it work? Maybe something is being lost in the conversion.
I'm just going off the information that FM supplies in their install and tuning manual.
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05-02-2007, 04:31 PM
#15
Scott is getting his temp from the thermosensor in the back of the head. The sensor in the tstat housing is actually thermoswitch that goes to ground at 97c- which IMO is too late for a boosted car in the south. The link can control the fans though if you run a relay ground to the designated pin on the ecu (I did it per the manual). My fan comes on when the car comes to a stop - set to 95c (which I believe is the stock NA 1.8 setting).
Would be nice to see some oil and coolant temps from water/oil cooled turbos, and oil cooled only turbos.
I'd post my oil temps, but they're not representative of a working system. Either my sending unit is whacked OR my oil tstat in the sandwich plate (with cooler attached) isn't working. On my 3 hour round trip I was getting 270f at 3500-4000 cruise. Boost showed the same.
Would be nice to see some oil and coolant temps from water/oil cooled turbos, and oil cooled only turbos.
I'd post my oil temps, but they're not representative of a working system. Either my sending unit is whacked OR my oil tstat in the sandwich plate (with cooler attached) isn't working. On my 3 hour round trip I was getting 270f at 3500-4000 cruise. Boost showed the same.
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05-02-2007, 04:39 PM
#19
Boost Czar
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I think it may just have GM defaults on it now. I don't really remember to be honest, acutally I think i just uploaded the standard file, not the mod file by mistake.
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05-02-2007, 04:41 PM
#20
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with the mazda factor specs, i idled warm at about 160, with aussie's, i idle around 180.... I could have sworn the previous owner said he put a 160 thermostat in, not sure though. i hit 200 in boost.
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