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17/64 and 9/32 is the same thing
about .015 diff ? not sure for this app. would be a big deal ? No they are not the same.
We just tap a hole in the oil pump run a line to back of the block re install where the oil sender is,(other hole), then restrict the top end of the oil galley going to the head we have never lost a bearing
Quote:An old article written by Herb McCandless, says 19/32".
http://www.moparts.org/Tech/Archive/bb/12.htmlQuote:
Also, from the rear of the motor, take out the oil galley plug on the drivers side of the motor and push a freeze plug into the bore just past the feed that goes to the oil pressure guage ports. It's a 15/32" I think, I'll have to look at my papers at home. Do this mod only for a solid or roller cam as it blocks the oil off the lifters. You can drill a 0.10" hole in it to let a little bit of oil go through if you want. This mod greatly increases the amount of oil availible for the main and rod bearings.
I believe that plug is 19/32". I just helped a buddy with his B-engine stroker. We found this info in Hensley's Racing Ent. "Little Purple" Book that Herb McCandless wrote. Yeah, it's for solid & roller cams only
Quote:I have on Hemi motor that had the drivers side oil galley machined higher in the block than the passenger side, it would expose the oil galley at max lift with a old set of non skirted solid roller lifters, I put in a small, can't remember the size now, welsh, freeze plug
Have any of you guys done the freeze plug trick in the back of the block?
I don't think I did that on the last motor I built. It is a solid roller motor.
Thanks for the help!
I ended up having to put two of them in, the first one turned sideways after running the car at a couple of races and started pulsing the oil pressure at idle, the second one never turned