250 Hybrid turbo with additional water cooling

Discussion in 'Mechanical - Engine, Gearbox, Exhaust etc' started by Cazper, Dec 7, 2017.

  1. Hey guys,

    are you guys who are running Hybrid turbos also running the additional watercooling and radiator? would be interested to see how many are and what temps the car runs at on a typical track day

    thanks

    chris
     
  2. -Jamie-

    -Jamie- RSM Moderator

    MK3 I assume? The are only really needed with the pro alloy cooler, which is a flawed design imo.


    I've had no issues with mine running hybrid and Airtec cooler, even at the Ring in 25 degree heat the coolant Temps were spot on even wot up Kesselchen which is renowned for overheating stuff
     
  3. yep, was your supplied and fitted by RSTuning?
     
  4. So is the Airtec stage2 version intercooler for the Mk3 flawed?
     
  5. -Jamie-

    -Jamie- RSM Moderator

    No, turbo came from RST but was fitted elsewhere.


    @ t&biskits I'd say the stage 2 is flawed as well, there's absolutely no need to have a cooler that tall as all it does is effect water Temps and the rad.
     
  6. what cooler would you recommend? personally my car will see some track days and a trip to Germany some time in the next 18 months
     
  7. -Jamie-

    -Jamie- RSM Moderator

    Id personally be looking at the Wagner/Forge or smaller Airtec one
     
  8. Why do you think they made the cooler so large if it ain't needed, when you compare them to stock they do seem overkill.
     
    MilosB likes this.
  9. Fit a biggest IC you can fit. And also fit a dedicated oil cooler.

    The problem of engine getting wormes is due to the effectiveness of IC to pul out the heat from the intake air. The more heat is pulled from the intake air, the wormer will the air to the radiator be.. And it does not matter if its large or small if itnhas the same efficiency.

    The stock oil/water heat exchanger is really not up to the job for a more "stressed" engine! And all of the engines would benefit from a dedicated oil cooler.

    Sent from my LG-H870 using Tapatalk
     
  10. -Jamie-

    -Jamie- RSM Moderator

    One of the smaller fmic and a proper oil cooler is the proper way to go to keep them cooking efficiently, get your oil Temps lower and lower coolant Temps will be a byproduct
     
    MilosB likes this.
  11. Theres no need to go with smaller IC. The bigger the IC assuming same quality the bigger the intake air temperature drop lower the pressure drop across the IC. An aditional oil cooler will lower the oil temps and thats it :smiley: the water will be cooled as it was tilk now, and without the added heat from the oil it wont need to cope with so high temperature load.

    Sent from my LG-H870 using Tapatalk
     
  12. -Jamie-

    -Jamie- RSM Moderator

    Your missing my point. Lower oil Temps will mean the coolant doesn't have to struggle to pull the heat out it. Plenty people running an oil cooler can back this fact up.
     
    MilosB likes this.
  13. Larger IC will also increase turbo lag
     
  14. Bobsan its not true.. Its a mith dating from the days when turbos took a loot of time to spool. There are tirbo setups that are located at the back of the car and engine at the front without lag...
    At 1500rpm your engine is breathing 60L/s do you really think an increase of 1L will impact anyithing??

    Sent from my LG-H870 using Tapatalk
     
  15. yes you are correct, in this instance a small increase in IC size will be more beneficial than detrimental
     
  16. Also the IC size increases a lot but the volume does not as the fins hold a verz small volume. Only the end tanks are the one thatbare "large" in volume. :smile:

    Sent from my LG-H870 using Tapatalk
     
  17. airtec stage 1 on mine and seems to be spot on.
     

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