Heavy fab work. Adding a diff cooler. The Gen 5 ZL1 uses a oil to oil diff cooler. The transmission has a transmission oil pump in it. Pump the trans fluid to the radiator, through a oil to water oil cooler then to the diff thought a oil to oil cooler. The the fluid returns to the transmission. I’ll use a stand alone electric transport oil pump to circulate the fluid.
I repurposed the diff cooler to my GearFX housing. Made a steel box out of 3/16 mild steel (In hindsight 1/8 might be ok). Hogged out a big hole making sure the cooler clears the center section. Weld it all back together. The 3/16 plate did not warp when I welded it.
I did the same modification to Hellfire and Jackass. I did not add this to Gunner and I could over temp the diff in 4 20 min track sessions.
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Brian Hobaugh SCCA National Tour June 2014
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