Running hot during track day - 110-115c with an outdoor temp of 106f .....
08-19-2008, 11:44 AM
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Running hot during track day - 110-115c with an outdoor temp of 106f .....
This is the second time i've done a track day with coolant temps going this hot (as shown on climate control). Gauge is wacky - goes to 1 tick before full hot - but temps never go above 115c - and goes back to center at 110c.
GofasTT was on track with me - same run group - his never moved from center - although we didn't check his temps from the climate control.
I've got more mods (Mod Stg III and full exhaust) - and a FMIC.
Last time it did this - outside temps were near 90 degrees and I was running 100 octane with the 100 octane program. Oil was ready to be changed with about 5k on it.
This time I was running 91 program with Torco Octane booster concentrate (this is concentrated gas basically and not something you get at the autoparts store). Fresh 0-40 Mobil 1 with about 1k on it. New green top coolant temp sensor installed as well.
I'm thinking FMIC and extra heat contributing but really don't know.
Other candidates include fan temp switch or the fans themselves.
Thoughts?
GofasTT was on track with me - same run group - his never moved from center - although we didn't check his temps from the climate control.
I've got more mods (Mod Stg III and full exhaust) - and a FMIC.
Last time it did this - outside temps were near 90 degrees and I was running 100 octane with the 100 octane program. Oil was ready to be changed with about 5k on it.
This time I was running 91 program with Torco Octane booster concentrate (this is concentrated gas basically and not something you get at the autoparts store). Fresh 0-40 Mobil 1 with about 1k on it. New green top coolant temp sensor installed as well.
I'm thinking FMIC and extra heat contributing but really don't know.
Other candidates include fan temp switch or the fans themselves.
Thoughts?
08-19-2008, 11:47 AM
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check all your fan switch connections
similar symptoms to my cooling saga on the coupe, turned out to be an unplugged fan with green cheese all over the connector (oxidation from being unplugged so long)..
probably a good idea to replace the radiator-plug-fan-switch-thermistor-thinger too.
they make a lower temp one.<ul><li><a href="http://germanautoparts.com">germanautoparts</a></li></ul>
probably a good idea to replace the radiator-plug-fan-switch-thermistor-thinger too.
they make a lower temp one.<ul><li><a href="http://germanautoparts.com">germanautoparts</a></li></ul>
08-19-2008, 11:50 AM
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Yeah - gotta do that - also low temp fan switch won't work on my car - I have the triangular plug -
the low temp version only comes in square plug design. I might see if I can swap a square connector on and use the older one - but not sure if wiring is the same. Need to check that too...
08-19-2008, 12:23 PM
#5
It was 100 degrees F In July at Road Atlanta. ------>
I worried about coolant and oil temps due to some recent problems posted by some of y'all, but I never saw my guage get to one mark above center. Didn't do the HVAC display thing, so I can't quote there, but in street driving mine always says 90C in block 51.
I kind of wonder about the air blocking effect of your FMIC too. I wonder too about why I never really feel like I'm suffering from heat soak. Speeds at the end of the straights are more or less the same at the end of a session as at the beginning. Perhaps that is because my car is not as heavily modded and the ECU still has room to compensate with additional boost as temps climb. I dunno. Reguardless, That Cayman didn't pull me too bad and it was HOT that day too. Now the Vette, or the STI --- They were rockets on the back stretch.
I kind of wonder about the air blocking effect of your FMIC too. I wonder too about why I never really feel like I'm suffering from heat soak. Speeds at the end of the straights are more or less the same at the end of a session as at the beginning. Perhaps that is because my car is not as heavily modded and the ECU still has room to compensate with additional boost as temps climb. I dunno. Reguardless, That Cayman didn't pull me too bad and it was HOT that day too. Now the Vette, or the STI --- They were rockets on the back stretch.
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08-19-2008, 01:29 PM
#8
Good point...>
Separate the heat loads and both systems (oil and coolant) will operate more effectively..
When you have 250+ degree oil being plumbed through a 200+ degree cooling system via the so called oil "cooler", the water temps are bound to rise..and in some cases beyond the Radiators ability to keep things in line..
When you have 250+ degree oil being plumbed through a 200+ degree cooling system via the so called oil "cooler", the water temps are bound to rise..and in some cases beyond the Radiators ability to keep things in line..