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  1. #1

    Join Date
    Jul 2007
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    PDX - Oregon
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    Jd 1 open loop cooling how to install

    The main water line that brings water IN from the pump should have a strainer on it. You can buy one here at the online store......

    This main water in line comes directly off of the pump, and into the intercooler. This is where you will begin.....

    This is for the RXP-X ONLY... although the RXP should be very similar. I will be doing an RXP install this week and will update on any major differences...


  2. #2

    Join Date
    Jul 2007
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    PDX - Oregon
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    Thanks JD for a great kit at an awesome price!!

    I had some questions during the install and thanks to the great people on this site I got it done without any issues.

    This 'how to' is for the people who need a little extra re-assurance/guidance on the install and is based on my 2008 RXPX install.

    Clear all the obstructions out of the way, supercharger lines etc....

    1) Open the cap of the coolant bottle, remove antifreeze drain plug from ride plate and drain all antifreeze. Remove coolant bottle, it will no longer be used.

    Remove all OEM (original) cooling hoses from the water pump, head, and ride plate. This includes the 1/4" hose off the head! This will make removal of the water pump much easier!!

    2) Remove the water pump- 8 bolts

    You should now be ready to install the JD open loop cooling system.

    3) While your hull is nice and empty- no hoses to clog up space... plug up the ride plate cooling line fittings in the back of the hull.

    I did this by cutting a couple of shore pieces of the OEM hose and topping them off with RTV black silicone. SEE PICS

    4) Take the aluminum reducer fitting and connect it to the large fitting on the head via a piece of removed hose from the head. Take the aluminum reducer fitting and couple it to the head/large hose.

    5) Take the hose from the the FRONT OF THE exhaust manifold and connect to the end of the reducer fitting off the head...PER DIAGRAM SUPPLIED WITH KIT!
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  3. #3
    Banned User
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    Ft.Lauderdale
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    Looks great!! I'm glad you went ahead and bought the two kits. At the hydros this weekend after two hard hit in the 1/8 mile, I pulled off my seat to let out the hot air and there was none It was very cool in my engine compartment and I had no heat fade as the day went on.. ENJOY!!

  4. #4

    Join Date
    Jul 2007
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    6) At this point you should set up your water pump cover. Insert the anoid (to prevent corrosion) and the main water IN fitting. See pics...
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  5. #5

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    7) NOW.. according to the diagram take the T fitting (pictured BELOW) and remove the T.

  6. #6

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    T fitting.. remove hoses... the two 1/2" lines will feed the oil cooler and the larger 3/4" hose will feed the main water input to the water pump cover.
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  7. #7

    Join Date
    Jul 2007
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    PDX - Oregon
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    Install the water pump cover. DON'T FORGET TO TAKE THE RUBBER GASKET OFF THE WATER PUMP AND PUT IT IN THE WATER PUMP COVER GROOVES... I chose to use red loc-tite 515, not thread locker, to seal it up. ALL 8 BOLTS TO SECURE THE WATER PUMP COVER!!



    9)You will have 2 3/4" lines off of the oil cooler... FOLLOW THE DIAGRAM and hook up the 2 1/2" lines off the T accordingly.
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  8. #8

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    10) install the supplied reducers onto the oil cooler 3/4" lines, and then connect the two 1/2" lines per supplied diagram.

  9. #9

    Join Date
    Jul 2007
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    PDX - Oregon
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    Route the 1/2" line from the bottom of the exhaust under the drive shaft, CAREFULLY...AVOID DRIVE SHAFT CONTACT AND SUPERCHARGER/EXHAUST CONTACT..... and zip tie it down.
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  10. #10

    Join Date
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    11) Attach the second 1/2" line to the correct (PER DIAGRAM) 3/4" oil cooler line. This 1/2" line comes from the pump shoe/ transom as labeled in the diagram supplied with the kit.

    Zip tie it down accordingly.....
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