Chevy 235 oil canister question

I bought a 54 Chevy a few weeks ago that had been sitting for a while. I just got it running tonight and wanted to change the oil again. I drained the oil but the canister is still full. The first time I just kinda soaked it up with some rags then cleaned it out. I can't fully understand how it works, shouldn't the oil drain back down the line on the bottom of the canister. I don't want to leave a quart of old oil every time I change it, what am I missing here? Thanks, Jim

 

62 chevy pick up with a 235 JUST bought it, and looking to change the oil this weekend, I am deffinently interested in a good answer lol

 

just get a big siringe?? sucker?? and suck it out. no big thing. looks like an old grease gun.

 

makes sence, low tech motor, low tech solutions lol

figured it would be something dumb

 

I use a turkey baster.
It's a bypass oil filter.
There is a 1/16" hole about 1" from the top of the center tube.
That small orifice meters the oil flowing back into the crankcase, so the oil pressure doesn't drop.

 

Thanks, I knew it wasn't a full flow filter, just wasn't sure exactly how it worked. I didn't see the hole at the top but knew it had to be something like that. Thanks for the replies!

 

Take the cannister off drill a 3/8 hole in the bottom. Weld or braze a fine thread nut to the cannister over the hole. Now it will have a drain plug. OldWolf

 

I never had that much oil left in mine. I pulled the filter and had only a few ounces at best left in the cannister. Are you sure oil is getting to/from your filter? Are your hoses clogged?

 

I wondered that too. Seems like too much oil to me.

 

Ford bypass filters have a pipe plug to drain...sure you aren't overlooking one?? Material is thick enough that you could if necessary just drill a hole at the base and thread for a 1/8 or 1/4 pipe plug.

 

Got a pump today at Napa, looks just like a grease gun with a hose on the end, worked great. The reason there was so much oil was I didn't have a filter in there the second time I changed the oil, I guess it would be a lot less otherwise, forgot to mention that. Mine doesn't have a drain on it, but thanks for the tip on adding one, I think I'll do that in the future. By the way, this thing sat for 15 on more years, had at least 2 gallons of water in the oil (2 piece hood, no molding, vent slits in top of valve cover) fired right up and runs like a champ now! Thanks fellas, Jim

 

Bruce:

Ford had a better idea...by having that drain plug. Chevrolet...not so smart. I think that I have seen only a couple of the add-on filters used on that generation of inline six that had any sort of drain plug. The vast majority came without.
All of the Ford Flatties that I have seen have them. Again, a better idea except when the toilet paper roll disintegrated and plugged up that little orifice.

I put a tee in the line coming out the bottom of the filter. That was a little easier than welding on a bung with a plug.

Tom