Quote:
Originally Posted by Wdhitch
Jack,
Does this create any sort of flow thru the engine compartment that you can tell? I kind of like the look. Also, what about structurally for the piece that has cutouts... any signs of fatigue?
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It is definitely flowing more air over the engine. I am recording lower inlet air temperatures on my scan-gage and my thermostatically controlled fan (150 degrees) rarely comes on anymore. I really think the turbo/heat problem might be solved.
The jury is still out on the structural integrity. I cut large holes in the bumper and threw away the stock reinforcement panel that runs across the inside top edge of the back bumper. I'll see if things start "sagging" over time.
Donny's design cuts smaller holes in the bumper and maintains the reinforcement panel. His design has a better chance of surviving the test of time.
And yes, Donny cut-up his car first. However, as soon as he told me about it, I ran over to Home Depot and bought a jig-saw...
Overal, I think this new bumper design opens up lots of new possibilities. I had basically stopped making performance upgrades to my turbo kit because I didn't have a good way to get rid of the extra heat that more HP brings. Now I plan to upgrade the valve springs and install a spacer in the cylinder head to drop the compression ratio from 10 to 1, to 8.5 to 1 so I can start running some real boost!...
jack