I was wanting to know how you guys with the turbo kits have your oil pans tapped. I know its realy easy on a b series because its a stamped oil pan but the k series ones are pretty thick and are cast or whatever. You guys take it to a machine shop or something?

 

i haven't done a k series, but the process is similar.

the key is knowing where the pickup for the oil pump is first.

i've used 5psi of air blown into the valve cover breather port to pressurize the crankcase. this pushes the chaf and shavings from the drillbit from going into the oilpan.

i used a 37/64 (.578") bit, and put a stop on it about a 1/4" up from the end using electrical tape.

once the bit broke through (you'll hear and feel the air couming out), i stopped and turned the air up the 10 psi, and kept it blowing through.

when you're done, use a 3/8" NPT tap (or what ever size fitting you're using) to make the threads. i use a little teflon tape to seal the fitting, i've seen others use a littel jb weld epoxy.

install the fitting.

drain the oil out of the oil pan. use a quart of kerosene or mineral spirits poured through the fitting to flush out any stray metal bits that may have fallen in.

that's about it.


Modified by kung fu grip at 10:44 PM 9/19/2005

 

I was planning on removing the oil pan to tap it and thread it I guess. i just know some people just drilled a hole in the bseries ones and welded a fitting.

 

drill and tap/weld are the 2 best ways. Welding being the best if available. either way i would recommend removing the pan for either to be on the safe side. I welded my fitting to my pan, mine is a steel pan, but im sure you could have an aluminum fitting welded to your pan if its aluminum.