Reische 170* T-stat - Test Results

[HotRaud90]

I installed the Reische 170* unit in the car this past weekend. I had considered goin with a cooler t-stat for a while and finally pulled the trigger. I also had Marty at Mo's re-tune for the change. Thanks Marty!

I decided to do some data logging with the SCT LiveLink software I have along with my XCal2 to see where the coolant temps were after the install. Below are some of the results.

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Test conditions: 18 minute city drive, 9 miles of stop and go traffic, speeds ranging from 35-55 mph when moving, outside temperature was 84*. Coolant/water mix is around 35/65 or 40/60. No water wetter.

Ambient temps: 80-84*

Coolant temp max: 196* (sitting in park at idle for 20 seconds after the trip)

Coolant temp max when moving at constant speed: 186*

Average coolant temp after reaching 170*: Around 182*-185*

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This was just a rough test. Nothing fancy or detailed. This is also my first time using LiveLink, so forgive me if I'm leaving anything out. Just wanted to show some results down here in the Florida heat.

I will be doing some more testing today to see how the temps are at higher speeds for a bit longer of a drive.

Feel free to ask questions or leave comments.

[Zack]

Either the fan speeds are off or you need to clean out the radiator with a hose.
That T-Stat should never allow temps to get that high from my personal experience

[fastblackmerc]

Either the fan speeds are off or you need to clean out the radiator with a hose.
That T-Stat should never allow temps to get that high from my personal experience

What he said^^^^^

I just installed the same t-stat, had Martyo change the tune according Reische's recommendations and I have seen my temp, measured via Scangauge II, go over 178 degrees.

"Additional Cooling System Improvements

It is important that the fan settings in your tune are set up properly to see the best possible heat dissipation from your cooling system. Otherwise a low temp thermostat will only be effective when the vehicle is moving because heat cannot be removed unless there is air passing through the radiator. Typically with our 170° thermostat installed your cooling fan(s) should be set to turn on between 184-190° and shut off between 176-182°, if not then re-flash your tune with the appropriate settings.

Water transfers heat more effectively than antifreeze so we recommend using the lowest concentration of antifreeze possible for your climate along with a product like Redline Water Wetter. Just make sure you have enough antifreeze in your coolant to keep it from freezing in the winter and always run no less than 20% in a street car. We do not recommend adding Water Wetter to coolant that is more than 40% antifreeze."

[fastblackmerc]

Did you burp the system?

[HotRaud90]

Either the fan speeds are off or you need to clean out the radiator with a hose.
That T-Stat should never allow temps to get that high from my personal experience

I'll check fan speeds with my handheld.


What he said^^^^^

I just installed the same t-stat, had Martyo change the tune according Reische's recommendations and I have seen my temp, measured via Scangauge II, go over 178 degrees.

I'm assuming you meant haven't* seen them go over 178?


Did you burp the system?

Yes, most definitely. Followed Reische's write up on the procedure, same one I do every time I burp the system. It's air free. I checked the other night and topped it off.

I'll check the fan speeds using the handheld. I assumed maybe Marty was able to flash the fan settings when he tweaked my tune. Maybe I'm mistaken and I was supposed to do it, or I was supposed to give him the fan speed settings when I had him tweak the tune? :confused: :dunno:

[Zack]

I don't think the marauder shows fan speeds on a handheld, unless they have made updates

[justbob]

Confused. First you said outside temps were 84 while cruising, then you said ambient temp was 70-74? Which was it?


Builder Of Badassery

[chief455]

Confused. First you said outside temps were 84 while cruising, then you said ambient temp was 70-74? Which was it?


Builder Of Badassery
same question as above, and, watching live data on both my Marauder and CV Sport - regardless of outside temps, stock cooling system, I'm not even 10* above your readings..:confused:

[MOTOWN]

Something definitely isn't right i have a 170* thermostat as well, cruising speed im at 172 to 174 in 80* weather , with a high of 186 in stop and go traffic , you may need to burp it again.

[HotRaud90]

I don't think the marauder shows fan speeds on a handheld, unless they have made updates

I checked today. No fan speed settings displayed in the list of parameters that can be tweaked before flashing the tune :(


Confused. First you said outside temps were 84 while cruising, then you said ambient temp was 70-74? Which was it?


Builder Of Badassery

Corrected in first post. I assumed ambient temps and outside temps were separate. Outside temperature was 84* but the data logging (using the INF_AMBIENT_TEMP value) showed an average of 75*.

[Logizyme]

I get the same temps as OP with my Reische and MartyO tune, radiator has been cleaned and definitely properly burped.

From cold it will cruise up to 170, hang out there for a few minutes and work its way up to mid 190's, and will only come down after long coasts downhill injector shutoff type driving for a while, at which it can get as low as mid 170's.

All of this leads me to conclude improper fan settings, something I have been meaning to talk to Marty about.

[Marauderjack]

The thermostat just regulates when coolant begins circulating......MAX TEMP has nothing to do with when the thermostat opens once the system reaches "equilibrium"!!:shake:

The cooling capacity of the radiator in conjunction to how much heat you generate are the factors that control temperatures and the equilibrium will change with changing conditions!!:cool: Note: my SC intercooler temps run 20*-50* above ambient and is in front of the radiator!!

I have a 180* thermostat (I think?) and mine runs at 193*-198* this time of year in traffic with no A/C....running......running the A/C will push it up to 208*-218* in traffic with ambient of around 100*.......been that way for 10 years!!

If my thermostat fails I'm going back to OEM....the quicker the system reaches its designed operating temperatures the better...IMHO!!:beer:

[justbob]

IIRC mine sits steady at 174-176 at just about any temp. But I have been dealing with the fan being on at all times condition all summer that I quit chasing for now.


Builder Of Badassery

[Zack]

The Marauder Fan is not adjustable like a Mustang is unfortunately.
It only has one programmable setting in the software.

[Zack]

If your temp gauge is reading 188 or higher and the fan is on high, there is no need to bother Marty for this. The problem is elsewhere.

[martyo]

If your temp gauge is reading 188 or higher and the fan is on high, there is no need to bother Marty for this. The problem is elsewhere.

This is correct.

[Shankin]

We do turn the fans on earlier with our tune files. That being said every car will run at different temps depending on lots of variables. Coolant percentage to water, ambient air temp, a/c on or off, if the car is supercharged, large intercooler blocking air flow, higher than factory stall speed in the converter, exhaust system back pressure, aftermarket or stock radiator, and several other things come in to this equation. Just because it has a 160 t stat doesn't mean it will run at 160. This is just when the t stat will open. If the t stat temp is to low this will cause it to be open all the time not giving the water time to cool in the radiator before re entering the engine. Hope this helps.

[sailsmen]

The thermostat just regulates when coolant begins circulating......MAX TEMP has nothing to do with when the thermostat opens once the system reaches "equilibrium"!!:shake:

The cooling capacity of the radiator in conjunction to how much heat you generate are the factors that control temperatures and the equilibrium will change with changing conditions!!:cool: Note: my SC intercooler temps run 20*-50* above ambient and is in front of the radiator!!

I have a 180* thermostat (I think?) and mine runs at 193*-198* this time of year in traffic with no A/C....running......running the A/C will push it up to 208*-218* in traffic with ambient of around 100*.......been that way for 10 years!!

If my thermostat fails I'm going back to OEM....the quicker the system reaches its designed operating temperatures the better...IMHO!!:beer:
Well stated. Radiator expels the most heat based on air flow.

[Zack]

The thermostat just regulates when coolant begins circulating......MAX TEMP has nothing to do with when the thermostat opens once the system reaches "equilibrium"!!:shake:

The cooling capacity of the radiator in conjunction to how much heat you generate are the factors that control temperatures and the equilibrium will change with changing conditions!!:cool: Note: my SC intercooler temps run 20*-50* above ambient and is in front of the radiator!!

I have a 180* thermostat (I think?) and mine runs at 193*-198* this time of year in traffic with no A/C....running......running the A/C will push it up to 208*-218* in traffic with ambient of around 100*.......been that way for 10 years!!

If my thermostat fails I'm going back to OEM....the quicker the system reaches its designed operating temperatures the better...IMHO!!:beer:


Well stated. Radiator expels the most heat based on air flow.



If you read the Reische mission statement, you will find he created this thermostat BECAUSE other thermostats do not open fully at their stated temperature WHICH DRASTICALLY affects cooling.

[martyo]

If you read the Reische mission statement, you will find he created this thermostat BECAUSE other thermostats do not open fully at their stated temperature WHICH DRASTICALLY affects cooling.

EggZackly.

That is the main selling point of there t-stats.

[sailsmen]

As respects the fan, which is critical ~20mph-40mph, the key is the shroud.

Study the OEM shroud and you will see why. The OEM shroud enables the air that is drawn by the fan to flow over the entire rad cooling area.

Over 40mph the front air dam becomes effective.

I have a non-oem fan and shroud. I have Flex-a-lite 480 twin fans.
Numerous tests have revealed the following as respects my Marauder.

The Reische Thermostat increases flow which reduces the duration of peak temps.

Redline Water Wetter also reduces max temps by several degrees.

The water to coolant ratio affects max temps.

Removing your front grill reduces max temps 5*-8* and reduces the duration of peak temps.

Turning off your a/c reduces max temps 15* to 20*.

From Reische web site;
"Most people think a larger radiator will improve the capacity of the cooling system but a big factor that is often overlooked is airflow. Increasing airflow will have a dramatic effect on the cooling ability of any radiator which is why most choose to do so when prepping a vehicle for race use. Some common ways to get more air through the radiator are:

•Increase the size of the lower air dam
•Box in the radiator to force air to flow through it and not around it
•Additional hood and fascia vents
•Additional or more powerful cooling fans
This is also why you never want to remove the lower air dam on a modern vehicle. Not to mention it will reduce the life of the radiator fan(s) and could even cause overheating."

[chief455]

yup sailsmen.
you guys should try cooling a car with no grill (f-body/vette) and a centri blower :eek:

[sailsmen]

My guess would be air dam is a factor?

[chief455]

My guess would be air dam is a factor?
HUGE! As installed by the factory, matching the rest of the cooling system.
Most successfully cooled cars run stock cooling with a well thought out intercooler, placed as not obstructing air flow to the radiator.
In my experience, trying to drop the t-stat from factory 190 to a 160 is not really worth power, when the rest is built correctly.
Always exceptions though.....