Description
The spraybar cooling system! Add an extra level of protection to your aircooled VW’s engine heat in extreme conditions! System utilizes thermocouple sensor for under the spark plug (#3 spark ideal, #4 spark plug if you already have a CHT gauge installed under #3). System turns the pump on at 375 degrees Fahrenheit, turns off at 360 degrees Fahrenheit. At continous duty cycle the system runs through approximately 1 gallon of water every 1 1/2 hours although the system will only run as much as needed to maintain the peak temp below the 375 F trigger temperature.
Installation is easy! On type 1’s insert the spray bar into the upper hole on the top of the engine case behind the shroud, remove one bolt holding the fan shroud to the cylinder tin, re-install using framework as the washer and the included M6 allen bolt for easy installation. On the Type 4, simply remove two bolts on either side of the fan, install the spray bar with the nozzle protruding through the grill opening at the center and re-install with the two supplied allen head bolts. After installing your thermocouple underneath the spark plug, wiring is easy! Red to key-on power (ignition coil + if not running a CDI works), black to negative, and yellow supplies power to the pump! That’s it!
If fitting a thermocouple under your spark plug isn’t your thing, we do offer a pushrod tube mounted thermocouple option to read head blowing directly down off the cooling fins of the head. We recommend mounting it as pictured on the #2 intake pushrod tube oriented sideways as shown in the pictures. As for temperature for activation that options ends up being up to you, the end user, as different cooling tins and exhaust configuration can what temperature it registers vs a safe head temperature. A bit of trial and error, but is easy to adjust and once you find it’s sweet spot it’s good to go! Under the spark plug remains our #1 choice as it is the best way to monitor head temp near the valve seats which is most critical, but this option is available!
Our controller includes a manual activation button to do a few things. You can use it to test the system and make sure the pump is cycling like it should (nozzles can plug up!), you can prime the water system on first fire up, and you can also use it to run the water lines dry by manually purging the water from the lines (pump can be run dry!)
Kit includes frame to hold the misting nozzle, Red-E Motorsports spraybar control module, high pressure 100psi water pump, check valve, filter, coupler, 15 feet of DOT airline tubing, two spare misting nozzles.
Due to varying water qualities we highly recommend distilled or RO water in the system.
Now with a larger 2-liter engine in your VW bus you can actually USE the extra power for extended periods of time, not just acceleration and passing! We took advantage of the extra cooling to tow a car and a truckload of show display booth gear (roughly 3000lbs extra) from SLC, UT to Las Vegas, NV (450 miles each way!) up canyons and into headwinds. If we weren’t doing 70mph, we were floored! Here we are passing a Bug with a 1600cc going up Virgin River Gorge with no heat issues! https://www.facebook.com/rob.varga.5/videos/329084…
Internal relay limited to 10 amps. For custom applications powering a device over 10 amps an external relay wired in will be required
*ATTENTION*, due to different cylinder head castings out there, some cylinder heads may need modification to fit the thermocouple under the spark plug. On Type4 engines, cylinder #2 and Cylinder #4 will fit the sensor under the cooling tin under the plug at an angle
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