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On3 Coolant Crossover install

Discussion in 'Engine/Tuning' started by FL Steve, Jan 20, 2017.

  1. keith89

    keith89 Well-Known Member Established Member

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    Didn't want to let this thread die. I'd love to do this mod to clean up the engine bay a bit but was wondering if it would be beneficial to use one of these: https://www.meziere.com/Products/Co...ds/Four-to-One-Manifold-1-5-hose-to-12AN.aspx
    to combine the coolant into the radiator.
    I was thinking there would be 2 lines from the front of the heads, one line from the driver's side rear and the heater return hose which is fed by the passenger side rear head.

    Is the radiator inlet/outlet 1.5 or 1.75"?
    I'm pretty sure the radiator outlet is 1.75"
     
    Last edited: Jun 16, 2017
  2. DSG2003Mach1

    DSG2003Mach1 Well-Known Member Premium Member Established Member

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    I did this kit because I was having issues with my procharger crossover not clearing my fuel rails and to get that damn bypass hose out of the way (real pain to get to the tensioner and the procharger idler bolt with it there). I dont see where theres anything to be gained coolant temp wise running this kit.

    I did not notice any change in cooling from before to after. Ive got the giant 3 core air to air on my car and I see temps like you in slow moving traffic. Ive tried a few different temp thermostats (even going 160 didnt help), lowered fan turn-on temps, coolant mix is mostly water (only good to 15 degrees) with water wetter and a Mark 8 fan.

    If you're just watching the gauge on the dash everything seems fine, with an actual coolant temp gauge you see they start running at the higher end of normal. if im moving 40mph or more I dont have any problems, hell at highway speed I can hang meat in the car and itll still be ~190 coolant temps.
     
  3. 03sonicblu

    03sonicblu going 4 broke Established Member

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    WANT A MARK8 FAN......WHERE TO GET?
     
  4. DSG2003Mach1

    DSG2003Mach1 Well-Known Member Premium Member Established Member

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    unfortunately the junkyard seems to be the only option, I didnt see where anyone made a new replacement.
     
  5. 03sonicblu

    03sonicblu going 4 broke Established Member

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    damn
     
  6. DSG2003Mach1

    DSG2003Mach1 Well-Known Member Premium Member Established Member

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    ya I was able to make a business account and some place out in Mims delivered it to me in Orlando with no delivery charge. Im looking into possibly having the motor rebuilt to see if I can get some more flow out of it
     
  7. CobraLucci

    CobraLucci LEO Established Member

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    hmmm u think an alternator shop that rebuilds them can rewind a mk8 fan?

    Sent from my SM-G920T using Tapatalk
     
  8. DSG2003Mach1

    DSG2003Mach1 Well-Known Member Premium Member Established Member

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    I called an alternator/battery shop and they said they didn't know anything about rebuilding these...need to call around some
     
  9. TERMINATEIT

    TERMINATEIT New Member

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    How do you get the bolt off the stock crossover on passenger side? I have a Whipple 2.9 and doesn’t seem possible, I will try to post pic
     
  10. 91svtcoupe

    91svtcoupe TTop SVT Coupe Established Member

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    Bumping an old thread. Anyone know what o ring size is for this kit? Ive tried the factory one off my stock cross over and ordered a set of new ones for the factory cross over tube. Both of them tore going in.
     
  11. slo984now

    slo984now AKA 01yellerCobra Established Member

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    Did you grease them before installing them?
     
  12. NateDogg

    NateDogg Terminator Established Member

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    Call On3. I have ordered O rings from them in the past.
     

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