PF-141 Oil Filter

[R N.]

Hello:

I hava a question regarding the PF-141 filter assembly, and have received many different answers. What actually holds the filter element tight against the engine ensuring oil is filtered. Some folks have told me there is a spring that fits over the bolt which forces the element tight to the engine, while other tell me there is no spring.

If there is no spring, does that mean not all oil if being filtered?

Just how does this filter element go together? Thanks for your help.

Best regards,
Kurt

[Larry E. Howard]

Re: PF-141 Oil Filter

Kurt,
Yes there is a spring and a conelike washer that fits inside the hole of the filter eliement. When you put the filter eliment in the canister you should be able to push it down and it will spring back. Not shure about your last question but the filter just drops in the canister and is self aligning. since it is symetrical it can be put in either way. the real key to changing the filter is the rubber ring. It must be put in properly or you will get a big leak. Most of the time when I changed the filter on my 62 I left the old ring in and discarded the new one.

[R N.]

Re: PF-141 Oil Filter

Thanks for your reply Larry. Any idea where to purchase the spring and washer. I've not see any listed with most of the parts suppliers.

Kurt

[Mike M.]

Re: PF-141 Oil Filter

Any chevy pass car small block, 1956 to at least 1967, used a cannister oil filter which you can procure then remove the long bolt and the cone wqasher and spring will be freed up. then put the cone and spring in your canister as canister lengths got shorter about 58. the o-rign seal in the block is an easiy removal with a snap-on ice pick that has a 45 degree bend on its end. one of the few reasonably priced items on the snap-on truck, mike

[Joe L.]

Re: PF-141 Oil Filter

Kurt-----

Mike's suggestion regarding obtaining a used part is just about the "only game in town". GM never serviced these parts seperately and, as far as I know, they are not sold in reproduction as seperate parts.

[Craig S.]

Re: PF-141 Oil Filter

Another handy tool for picking out he old oring seal is a metal scribe used for layout. They have a 90 degree fine point on one end, which works perfectly to snag the oring out between the filter boss and the filter support asm...Craig

[Ronnie Robertson # 36786]

Conversion from Spin-On to Canister

I currently have a spin-on filter, but purchased a canister for my SB '66. What do I need to do to convert from the spin-on to the canister type? Is there any oil filtering advantages or disadvantages to either type?
Thanks

[Craig S.]

Re: Conversion from Spin-On to Canister

Ronnie - assuming you have the original block with correct machining, you just need to remove the spin on adapter and install the original adapter for using the cannister filter. I don't remember the the GM part number, and it is not available from GM anymore, but I believe you can get it from LI Corvette or others. The filter itself is longer and has more fitration than some of the spin on filters, but, is probably very similar to a PF35 size as far as filtering capacity. The cannister is far messier to use though, and mostly an originality thing as the spin on filters are much easier and cleaner. All of my midyears have the original cannister style though...Craig

[Mike M.]

Re: Conversion from Spin-On to Canister

you should be able to pick up the correct cannister adapter or by-pass valve in any junk yard. try the pile of trde-in engines or blown engine . it was ac part # 5573979 when still available. If you can't find one locally, let me know and I'll send you one on the house. mike

[Ronnie Robertson # 36786]

Re: Conversion from Spin-On to Canister

Thanks,
I'll hit the local salvage yards monday.