The Stovebolt Site Forums The Shop Area Engine Shop Oil filter on 55 235: which is the return...which is the inlet

There's a port on the side and one on the bottom-which is which?
also which one, inlet or return, is the one that the oil pressure gage feed off of at the block?

Thanks,

Keith

This has been discussed many times. The block outlet at the rear feeds the pressure gauge and the inlet of the oil filter on the side of the filter. The outlet on the bottom goes to the inlet on the block towards the front.
Of course it could work both ways. I have photos of both variants on stock engines.

Thanks for splain'n it one more time blu-I seem to remember my gage comming off the rear one..I suppose the ones that do the opposite did so by accident?

Anyone use teflon plumbers tape on these joints?

Thanks,

Keith

No, don't use teflon tape on those fittings. If anything, use Permatex #2. Teflon tape can get into the system and plug up the passages, especially if it ovehangs the threads any at all.

There was some discussion about the filter being able to drain from the bottom when sitting. I am preparing a filter canister that I got off a 1951 216 in a truck. In this model, the bottom fitting is connected to the central tube and there is a restriction in the bottom outlet fitting. However, the only way for oil to pass into the center tube is through one tiny hole, up about 3/4 of the height of the tube. So I see two outcomes from this layout. First, the can will never drain just sitting there and number two the primary restriction is very small and is located on the side of the central tube. Oh, and there is a separate drain on the bottom of the can for servicing.

Upper right hand corner....from the Chevy shop manual.


http://image60.webshots.com/460/1/0/55/2292100550090459121nGskQJ_fs.jpg

Dave

Dave, the link comes up as "Forbidden".

Thanks Bill,

I tried it before I submitted it, and it gave me the "forbidden message, tried it again and it opened.....will give it another shot as a picture is still worth a 1000 words!!

http://rides.webshots.com/photo/2292100550090459121nGskQJ

Click on "Full size" in the upper right corner to get a larger view of the filter plumbing setup.

Dave