2) Nozzle
Before removing the pipe for drilling, make sure there is ample room where the elbow for the nozzle will be located. At this time mark the pipe to where it will be drilled. Most Buick’s the pipe is offset. The nozzle will require a 13/32 diameter hole to be drilled into the up-pipe. A 3/8 drill bit will work with a little drilling in/out. The location of the hole is not critical, although would be recommended it is placed so the nozzle is of higher level than the tank. My typical location is 9 o’clock on the straight section leading to the throttle body, by the turbo. Remember you will need a 7/16 wrench to hold the head of the nozzle. So give yourself ample room to reach the nozzle with a wrench. After drilling the hole, make sure there is no metal shavings left inside the pipe. Clean surface. Mount the nozzle from the inside out WITH THE RUBBER WASHER ON THE INSIDE INSTALLED and attach the 90 degree brass elbow onto it. Depending on the thickness of the pipe, will dictate whether an additional sealing washer will be needed or not on the outside of the pipe. To make the determination look through the hole on the elbow and make sure the tip of the nozzle does not contact the bottom of the fitting. In other words, does not bottom out. Tighten the nozzle so that it is held securely and point the elbow toward the radiator area for hose connection hook-up. Tip is to use red loc-tite on threads. And now install 1/8-4 adapter onto nozzle. So hose can latter be installed. No tape is needed. Sealant like Teflon paste is ok on the adapter. Red loc-tite on nozzle threads
