Thread: NHRA Tech Question for Techinspector or Anyone

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Mike, run nothing in the driveshaft tunnel. It gets ugly when the shaft fails because although you can kill the motor and stop the front part of it, the rear half of it is still being driven by the pinion until the car comes to a stop. I have seen fellows run two loops to add some insurance.

Wiring and fuel lines can be run along the outside of the frame or extreme edge of a unibody underbody, managed with insulated Adel clamps every 12 inches. They are available in many different sizes. Check Ace Hardware. Self-tapping sheet metal screws work well, just be aware what you're drilling through.
Adel Clamps | eBay

"In place of a crossmember, in the vicinity of the front universal joint, all cars in competition using open driveshafts must have a retainer loop 360 degrees of enclosure, 1/4-inch minimum thickness and 2 inches wide, or 7/8-inch x .065-inch welded steel tubing, securely mounted and located within 6 inches of the front universal joint for support of
the driveshaft in event of U-joint failure."

These driveshaft loops are available commercially or you can make your own from 1/4" x 2" steel stock.
https://www.summitracing.com/parts/sum-g7900

Consult PM for my phone number if you want to talk.
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