Hi guy my 08 TT corvette with moshimto radiator and 2 spal fans the engine oil is running through the radiator
I have installed new GM water pump with 160 thermostat and tune the fans
im suffering from insane temp while driving in the neighborhood and stopping in the traffic lights it reachs up to 230F and increasing
But while driving in the highway it is 183 F
And when start the car without driving it is 194 F fixed
Any ideas what cuz this rapid temp increasing???
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Anyone??????

 

Are you sure the fans are running?

 

Are you running a 25% UD balancer?

 

Spal fans are not the greatest. I am curious where did the OEM fan(s) go?

I think your fans are just not keeping up. If they are even running like somebody said.
Also make sure they are turning the correct direction, maybe its pushing somebody wire it backwards

Consider investing in an external, thermostat'd aux engine oil cooler as well. No matter what the resolution of this issue, the oil does as much or more to cool an engine than coolant, it should prioritize and maybe there is some issue with the rad heating from hot oil.

 

Those are normal temps

 

U less they're spall Extremes they are probably worse than the stock fan. Make sure you're running a sealed radiator shroud. If you have a front mount intercooler that will definitely have this kind of effect.

 

Yes SLP UD blancer

 

Yes i can hear them running

 

Any suggestions for aux engine oil cooler?

 

As u can see custom shroud

This the intercooler location

 

Your water pump is running too slow at idle coupled with much reduced airflow when stationary due to fans and huge I/C.

 

In this case what should I do,, change it to electric pump?

 

Yup, or live with it. Or increase idle speed in the tune. Making sure every little gap around the rad and shroud is filled / sealed is also a good idea. You can get high temp expanding foam tape for this.

Its not clear from the picture if there is any gap for fresh air to get to the rad from the front or bottom - does it all have to go through IC? If so make sure you seal the rear edge of the IC to the front of the rad.

 

You might look at the G speed Corvette C7 fan conversion kit put a single 600 watt brushless fan in the OEM fan is like 400-450 watts. Nice bolt in set up you need to specify the radiator. Pro Speed makes another good fan set up that is a bolt in. The underdrive pulley also is not helping.

 

I manged to copy pro speed kit with SSR (solid state relay) and the power line is directly from the battery but it mighy be tuning cuz i did not change the rune once it was single fan
​​​​​So for now im getting alot of answers about the balncer is one of cuze

 

This can be part of the problem. Don't know your location, but if year round driving in a Southern tier of states, I know from experience a 25% balancer will definitely contribute to the problem. I've run a 25% for many years, and its fine with a DeWitts radiator, conventional antifreeze, if in a Northern state, without long stoplights. I'll say this; I originally ran Evans coolant (Propylene Glycol) with my setup, in a heat wave. The coolant ran at 240°, hour after hour, with A/C on, in 120° ambient temps AT FREEWAY SPEEDS!! Evans is Propylene Glycol, which isnt as efficient at heat transfer as Ethylene Glycol. With a stock balancer, Ethylene Glycol, and a stock, or a 10% UD balancer, I'd expect 195°, or less temps in same conditions. In Florida, when stopped at one of their infamous, 3 minute red lights, I get to 195°-200°. It would get hotter yet, but I have fans tuned to turn on at 194°. These temps were recorded without A/C. With A/C on, I'd expect approx 210°. I run stock fans, as more than one shop has told me most aftermarket fans aren't as good as OEM. Hope this helps you. 25% UD's aren't for everybody......

 

IMHO, a single fan is a bad idea. Fans can, and do, stop working, due to defects in fan workmanship, design, or even in the wiring or temp sender. The engine doesnt know why it's getting hot, and it doesnt matter why. All that matters is it's getting too hot. Having 2 fans virtually assures 1 fan will still be running correctly. My friend leased a late model car several years ago. Everything was fine until a traffic jam happened on the freeway around Cincinnati. The engine overheated, and he had to be towed. Engine was scrap. Car had 1 fan. That's how he found out it had 1 fan!!

 

You gotta seal up the sides of the radiator. In traffic and at lights you're just sucking in hot air from the engine bay through the fan then radiator. Evidence here is that you're running between 180 and 190 on the highway. An underdrive pulley doesn't have that large of an effect. I have one as well.

 

What is the effect of the removing thermostate permanently?
It will be my last resort but i wanna know