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Old March 20th, 2011, 05:25   #72
josh8loop
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Join Date: Sep 2009
Location: Vero Beach, Fl.
Fuel Economy: 45 MPG City with the previous 01M, 5-speed 60+ MPG City. Always searching for ways to make it better!!
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Diezeljunky,

That spring is there to allow the rear disc to seat in the bypass opening in the block while still allowing the thermostat to continue opening. If it was a single piece, the disc would seat and the thermostsat opening stroke would be limited.
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2002 VW Jetta TDI 5-speed(completed 01M-5-speed swap at 155K miles) 60+ MPG City.
Experimenting with the "Hybrid" 205 Deg F T-stat:
http://forums.tdiclub.com/showthread.php?t=306799&page=4
Now have Nokian Entyre Low RR tires!
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