suby engine oil pan shortened, cant stop the leaks Options

[scotty914]

okay short version of it:

i cut 2 inches out of the oil pan for more ground clearance, and added 2 boxes to make up for the capacity, sticking out of the front and rear of the oil pan.

i welded it all up, used a flood light to look for holes found 3 pin holes that way, welded the pin holes up. then did a water test and it leaked, well more like seeped, i could see the water spreading on the out side, not dripping jet wetting it. so i ground down the first area and brazed it. well i did this about to about 10 places, and some of them more than once ( brazed a larger area )

and still have the seepage problem, could i just por 15 the oil pan to seal the holes or should i keep brazing and looking. and if not por 15 is there anything else i could use.

i so far have used a 3 foot flux coated rod brazing this thing up, so now what

[dmenche914]

Flux filled welding rod is not the best for pin hole free welding, but it is possible. To locate the leaks, fill the pan with water, or better still, paint thinner, and let it seepfor a while, then dump the liquid, and wipe dry the exterior of the pan, then spinkle crushed chauk (athletic chauk for gymnists of rock climbers) or use baby powder, or other fine powder. Spinkle on the out side of the freshly wiped dried pan. The leaks will still have paintthinner in the nooks and crannies, and will be drawn out by the powder, and moisten it. You will be able to see the moist powder Wait a few minutes,a dn shake off the excess powder , where it got wet, it will stick, and that is the point of the leak(s)

There are points that are made ecspecially for inside engine blocks (used to smooth out the insides of cast iron blocks, so that the oil runs back to the pan faster) These paints should be heat, and oil proof enough to work for you. Check out the American hotrod stores for this.