C2 Oil filter spin on adapter

[Rich Freeman]

Does anyone have any positive/negative feedback on switching from the canister type oil filter to the new spin on adapter type? I was getting ready to change oil in my 66 327/350 and I remember last time I had trouble getting the canister to seal and leaked some oil.

Thanks....Rich

[mike mccagh]

Re: C2 Oil filter spin on adapter

the adaptor that accepts the spin on filter element is certainly less hassle than the original canister style filter--way less likly to leak as no need to fish out the rubber o-ring and replace it(they always want to fall out although a thorough cleaning of the o-ring mating surface with ether helps). however, they don't do well on the judging field.if the 66 is a driver that's been thru the judging process and you have the adaptor, i'd change it .keep the old parts in case you intend to have it judged later. mike

[Stephen L.]

Re: C2 Oil filter spin on adapter

Rich, typically there is a problem sealing the canister type filters because the old gasket was left in place.

I have found the easiest way to get the old gasket out is to remove the (2) 7/16 bolts that hold an aluminum piece on the block inside the canister area. This gives you ample clearance to get the gasket off. just reinstall that piece and then place the new gasket in the groove and you are good to go.....

[Robert T.]

Re: C2 Oil filter spin on adapter

Rich,

I put a spin on adapter on my 67 small block 34 years ago. No problems with it at all. It is easy to switch out if you want to have the car judged. Easier to find filters for it also.

[Mark S.]

Re: C2 Oil filter spin on adapter

Steve: I use an ice pick or long thin screwdriver to get the old gasket out.

[Mark Milner]

What o-ring?

All I ever used and changed had a square rubber ring. It fit flush in the square cutout of the oil pad.

Are the new cartridge filters using o-rings?

[Mark Milner]

Re: C2 Oil filter spin on adapter

Like many things, the quality of the item has a lot to do with satisfaction.

If you buy a really cheap kit, you may experience leaks. If you buy a qualtiy kit, you will enjoy the quick oil change with little hassle.

You can tell the cheap ones by the poorly cast pot metal adapters.

Some kits use the old Chrylser filters, like the Fram PH-8, rather than the Chevy filter like a PF-25, PF-35, PH-30, and so on. Be sure to know because either filter will screw on, but only the right one will seal.

[mike mccagh]

Re: What o-ring?

the cross-sectional shape of the O ring is in fact square. the overall shape of the O-ring is round like an O.mike

[Rich Freeman]

Re: C2 Oil filter spin on adapter

Thank you all for your replies. I'm not currently having my car judged (I like driving it too much). I understand that the old O ring has to come out. I also learned (after dumping 5 Qts of oil in my garage) that once the canister & filter are replaced, you have to hold the canister while tightening the nut or the canister will move and tear the new O ring. I read an article in CF and they used an adapter from Zip-products that takes the PF-25 filter. Is this OK, or does anyone know of a good source I can oder from?

Thanks again for all of your feedback!!

Rich

[Brian M.]

Re: C2 Oil filter spin on adapter

I don't understand whay anyone would switch over to a spin on filter. For the past 30 years I have been using the AC Delco PF 141 filter and change the gasket every time using a dental pick for removal. Coat the new gasket with oil and push it into place. Clean out the cannister drop in a new filter, add 1 Qt of oil into the cannister install hand tight then snug up with a wrench. I haven't had a leak yet. 9 cases of PF 141 in stock.

[Joe L.]

Re: C2 Oil filter spin on adapter

Rich-----

The spin-on are a lot more convenient and less trouble at oil change time. I would definitely want the type that uses the "PF-25" style filters.

However, keep one thing in mind: the old, cannister style filters are making a comeback, of sorts. Several new cars now use an updated form of them. Partially, this is because folks have finally figured out that there is a lot of waste involved with the spin-on style filters. A lot of steel goes in the trash, the filters are difficult to recycle, and it's hard to get all the oil out of them for recycling.

While the "cannisters" have changed design, the filters used in them look a lot like the ones used for pre-68 Chevrolets---just smaller (like the newer spin-on filters are, too).

[Kevin M.]

Re: C2 Oil filter spin on adapter

Brian,

I'm just catching on to this 1 Qt into the cannister thing, is that in addition to the 6 Qts? I don't think I ever seen this done at my lube place. I know...

Kevin

[Brian M.]

Re: C2 Oil filter spin on adapter

Kevin, my car call's for 5 Qts. I put 1 in the cannister and 4 in the oil inlet tube.

[Kevin M.]

Re: C2 Oil filter spin on adapter

Your right, I'll do it this way from now on. I'm going with diesel next change.

Kevin

[Mark Milner]

Re: What o-ring?

Since you are a bit sensitive to comments I make, I make this with hesitation.

The item you are referring to is a gasket. It is Chevrolet 1.844 GASKET, Oil Filter, P/N 5573980, 58-67 (8 cyl), per the 1953-1982 Corvette Parts and Illustration Catalog, December 1983.


From Wikipedia, the free encyclopedia

An O-ring is a loop of elastomer with a round (o-shaped) cross-section used as a mechanical seal. They are designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.

Other seals
Similar devices with a non-round cross-section are called seals or gaskets. See also washer (mechanical).


Because of the thinness of the cannister wall, it cuts into the gasket to seal, not by sitting across the entire face of the gasket. If used with an o-ring, the gap in contact would cause the o-ring to fail. You may have used an o-ring on some occasion, and it may work under most applications, but when the weather is cold, the oil is thick, and the pressure high, the o-ring is likely to fail in the type of junction used by the cannister and would be outside the risk Chevy would have taken, thus the square gasket.




O-ring definition