1. Jmeo

    Jmeo You said member ;)

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    If you look at the Reische T stat it works in the exact way the OEM one does. If you look at the Even Flow T Stat it works differently because it has holes drilled in the diaphragm allowing water to sneak by at all times. Can you explain why yours does this and what would be the benefit of this?

    Thank you for stepping in to answer our questions.

    Jaime
     
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  2. evo8904

    evo8904 I'm a member???

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    Per my previous post. I have a 170 degree thermostat and my temps are around 185 degree. I have a Whipple SC and catless Kooks headers. That is even after doing multiple 3rd and 4th gear pulls and line locks.

    The 160 degree thermostat should work better but I haven't seen anyone post any results showing that it does.
     
  3. mustang_guy

    mustang_guy Well-Known Member

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    Yeah. Why sell us hotsided thermostats for a cold sided system? What is their reasoning for thinking it would work better? Personally i just used to run Reische for all my mod motors. I didnt used to see threads like this its gotten my interest. Im not being told why their design is better. The pot test doesnt show enough for me.
     
  4. Livernois Motorsports

    Livernois Motorsports Well-Known Member
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    Hey Jaime, I am a little confused by your statement.

    Here is a pic of the 170° unit:
    [​IMG]

    Are you referring to these?
    [​IMG]

    If these are the passages that you are there referring to they are not allowing anything to "pass thru". They allow the tstat to open more quickly.
     
  5. Higgs Boson

    Higgs Boson Detonation Denotation

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    Ok, first can you point out to me where you are getting a "hot side" vs "cold side" terminology or debate?

    The answer to that question could change my perspective on this topic so with that......

    A thermostat works the same in all engines. The pot test simply shows when the thermostat opens so that is really all that is needed to compare opening temps.

    It seems like there is some confusion as to what hot side vs cold side means....most vehicles do not display Cylinder Head Temps, many do not even measure them. The typical reading is Engine Coolant Temp, which is not measured in the head, but in a cooler area, sometimes the radiator or near the thermostat. This does not change the system from cold side to hot side, that doesn't even make sense, there is no such thing.

    Naturally the CHT will read higher than ECT since that is where combustion is taking place and would be the hottest point of the engine, and also subject to more temperature variation due to changes in AF ratios, spark timing, power levels, etc etc.

    All a thermostat does is determine the temperature FLOOR of the engine. The rated temp is when the thermostat BEGINS to open, they do not snap open and closed at the rated temp. They are designed to remain closed to block coolant flow until the temp is reached and then open over a period of 15 degrees or so until fully open. Where the temperature sensor is located/measured does not have anything to do with the thermostat. At all.

    On my car, which is an Auto without Performance Package, CHT stock was 210-220 and with the 160 are 200-215. The auto trans fluid and the smaller radiator most likely limit the avg cooling ability of the system/radiator vs a PP manual setup. My ECTs logged with HPT are 10-15 degrees colder than my CHT, which is what I would expect with a 160 thermostat in my area (altitude, humidity, temps). ECTs are in the 190s, which is a bit warmer than my C7 with a 160 stat, but it is a manual with a better radiator than the Mustang.

    There are a lot of variables in play when it comes to a cooling system's efficiency. Obviously ambient temperature and power levels but also humidity and altitude. Air density and moisture content will alter the ability of the radiator to perform so comparing mine to yours, Florida to Texas, humid sea level vs less humid 1500 ft up.....your radiator is probably doing a much better job than mine. I have seen guys in the Carolinas as well reporting much cooler ECTs on their stock Corvettes vs mine when it was stock. Very much like comparing dyno numbers, pretty pointless.

    By the way, the stock thermostat is a 180.....moving to a 170 is not going to do much, moving to a 160 is also not going to be night and day. My stock C7 thermostat was a 194 so moving to a 160 made a pretty big difference.
     
  6. mustang_guy

    mustang_guy Well-Known Member

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    see above post. Also thats what i had always thought but then i read that post above and it threw me for a loop.
     
  7. gsxr1300

    gsxr1300 Well-Known Member

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    This was my car a few weeks ago. Driving to work on a 50 degree day after 30 miles of cruise control at 70.
    [​IMG]

    So I figured my tstat was defective or something, so ordered a EvenFlow 160 from Livernois. I pulled my tstat out and the new onelooked exactly like the one I took out. I placed both in a pot on the stove and both started opening at 160. So I put the new one in and now its running at 202 coolant and 212 cylinder head temps. And that is the same as when I have the stock tstat, so wondering why a 160 tstat has my car running at 202/210 in now 30 degree weather is what started me to do research on the different brands.
     
  8. Higgs Boson

    Higgs Boson Detonation Denotation

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    according to other posts in that thread, the rated opening temp doesn't change,

    but the coolant flows from the radiator to the thermostat to the block to the radiator

    rather than from the block to the thermostat to the radiator to the block like normal

    according to that thread this makes the thermostat open about 10 degrees higher than the normal setup (thanks a lot Ford).

    it also mentions the CHT sensor reads about 10 degrees higher than ECT, which is what I have found also.

    so everything operates about 10 degrees higher than we are used to with traditional thermostat locations vs the thermostat rating. Ok.

    However, I guess we will need to defer to Livernois to confirm or deny Reische's claim that the thermostat construction opens/makes a difference when made specifically for this type of config........
     
  9. Jmeo

    Jmeo You said member ;)

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    Yea they are. Thank you for taking the time to help us understand. Admittedly I am not completely clear with how the system works other than the T stat opening at a certain temp.

    The post about the hot vs cold side is what got me confused.
     
  10. Livernois Motorsports

    Livernois Motorsports Well-Known Member
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    The earlier that the tstat opens the greater the capacity is for cooling. That is the "debate". The other one is a mixture of how the OEM and/or how factory power adder car cooling systems are designed.
     
  11. Higgs Boson

    Higgs Boson Detonation Denotation

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    So the cold side issue is only on the EcoBoost?

    or is there any merit to the thermostat build/functionality on the cold side being different than on the hot side?

    To me it seems like it would make no difference at all as there is hot and cold coolant on either side of the stat regardless of it's location....
     
  12. Jmeo

    Jmeo You said member ;)

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    I was under the same opinion. People are posting cooler temps with the Reische so I just was wondering how this could be with a T stat that opens 10° hotter, that's all.
     
  13. Higgs Boson

    Higgs Boson Detonation Denotation

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    have to look at location, radiator, transmission, and mod level at a minimum to compare temps.... very hard to do scientifically.

    outside of what people are posting, I would just like to know if the info quoted from the F150 thread is just marketing bs or real deal.....
     
  14. gsxr1300

    gsxr1300 Well-Known Member

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    There is also a bypass part of the tstat that opens and closes on the stock and Reische and not the Evenflo it has the holes in the bottom that are always open..
     
  15. Jmeo

    Jmeo You said member ;)

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    Livernois pointed out the holes are on a mating service so they don't let fluid through they just help make T stat open sooner.
     
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