I have heard it's possible to do this, but I don't want to throw this thing out of balance or drill into a vane or something horrible like that. I could use a small 1/8" pipe plug like Ford uses. This is a SP400 torque converter......has anybody here on the board ever done this? o No:
Sometimes people who use a used convertor from an unknown source will drill a 1/8 hole This is so that it will drain and flush any particles out of the convertor. We normally just mig weld them to seal the hole. I would think a pipe plug would not be much diffrent in weight.
The Hydramatic engineers used to drill them so we could do fluid comparisons. We did drill one hole and then another 180 degrees from the first one for balance but it may have just been overzealousness on our part. We plugged them with set screws since they were going to be in and out often. As long as you drill between the bumps (that denote where the vanes are welded) you should be ok. K
