tru-blue 442

Nice unit. Could use a new filter, $55 shipped within the lower 48.

kjr442

Ok you got my attention, I want it, but do you have any of the filters?

tru-blue 442

Hi Kevin. No I don't. I can't even see how a person would replace one.
Do you just pull it out the bottom, do they unscrew or...?

kjr442

Hell if I know lol, I just tried to get the other one listed here , but he had replacement filters to go with it.

AJ442W30

PM Sent.

tru-blue 442

AJ, the sale is pending on this unit. If it falls through, you are next in line, thanks.

tru-blue 442

Sold.

Allan R

Interesting thing, when I checked my 72 Cutlass Assembly manual it doesn't show that filter on the bottom of the charcoal cannister. The shape of the cannister holder suggests something that shape goes there though. Would love to see an unmolested example with that filter. Years ago I passed up buying any of them because I thought the bottom had to come off the canister to install it. duhhhh

capstoneclub

What yrs/models came with these canisters.

Allan R

They're at the front right (passenger side) of the engine compartment just ahead of the wheel liner. It takes (2) 1/2" bolts to secure the cannister bottom to the lower part of the rad support.

These cannisters were unique to 71/72 A bodies. I don't think the B/C bodies got them but I could be wrong on that. I spend more time with A bodies.

Timbowamba

That canister is also in my 85 cutlass

Greg Rogers

I had one on my 70 Vista parts car. It was supposedly a 455 car ( engine gone). Also this parts car had a extra line to the gas tank. My 70 Vista driver has a 350 with no canister and no extra line to the tank. Strange. My 71 Cutlass 350 has one.

Allan R

The cannister has a line that returns to the fuel tank and one to the carb. Are you sure we're talking about the same thing?

I don't think the cannister in the 85 is the same as this and I've never seen one in a stock 70 Cutlass.

classicmuscle442

My '70 with 455 has one, Ca car.

Greg Rogers

That maybe the case here also. I was told this was a California car. I know Ca had stricter emission standards.

Timbowamba

Here's a picture of the canister from my 85

briane

I'm more familiar with the Chevelle, but I'm pretty certain the story is the same for Oldsmobile. The Evaporative Emission Control (EEC) was required in 1970 in California, it was an option in the 49 other states. In '71 forward it was on all vehicles. The filter is that white fiberglass (or some material like that) disc that is on the bottom. You just pull it out from under that center bar and stuff in a new one. I think the filters are readily available. A black funnel shaped piece snaps onto the bottom, I don't see one pictured here. On my Chevelle there is a short length of rubber fuel line on the funnel. I have seen NOS funnels for sale recently.

The number of ports on the top varies depending on the year/engine/carb combination. I've seen two, three, and four. They may connect to the gas tank separator, carb, PVC valve, etc. An assembly manual or shop manual should help with these details.

kjr442

Can you provide a link to what you are talking about? I'm not sure if I have ever seen this funnel thin you speak of.

Allan R

Kevin, it looks like this. The other side of it has a recess that lines up with the plastic in the middle of the charcoal cannister. The side you're seeing would fit down the base of the cannister holder. I've never seen one on my car and we've had it since 74. I do have the regular filter in the bottom of the cannister but I don't think it's ever been changed.

kjr442

Im sure few filters were changed after warranty ran out on these cars. My car did not have this bottom piece that you have pictured here, I guess I would put it on though, if I had it.

briane

All this discussion prompted me to do some homework. In the '70 and '71 Oldsmobile shop manuals I have, Section 8, the photos and illustrations don't seem to indicate the presence of the bottom funnel. Although they don't show a great side view.

In contrast the Chevrolet shop manual does in some places show the bottom funnel. Chevrolet further instructs you to remove it to get at the filter. The Oldsmobile manual does not speak to removing it for filter replacement. I also can not find reference to the funnel in the Olds parts book while I can in the Chevrolet book.

So I think a reasonable conclusion is that Olds did not use it.

Comparing the '70 and '71 shop manuals, the V8 A-body canister had 3-ports in 1970 and just 2-ports in '71. I imagine '72 is like '71. The separator assembly in front of the tank is quite a bit different between '70 and '71, but I guess that's another discussion.

Allan R

This is the same conclusion I came to. My car was still on warranty when we bought it so if it was changed it would have been during that time. Since we've owned it the cannister has never been out of the car till I did the front end restoration. The bottom of the cannister isn't all that dirty either.

briane

I think, looking at the last two photos in tru-blue 442's original post, the Olds mounting bracket in the way it's made serves the same function as Chevy's plastic funnel that snapped into the canister itself. The Chevy bracket is more a strap that goes around the circumference.

Allan R

Makes perfect sense to me.

Timbowamba

Briane, can you tell me where I can get a replacement filter?
Thanks, Tim

kjr442

Me too.

briane

From the information I have, it looks like all the GM lines in the early '70s use the same filter. It's AC Delco A478C or Olds/Chevrolet 7026014. There's an NOS AC Delco one on fleabay for 29.99 plus shipping. Alternatively you may elect to buy he same new AC Delco filter from Amazon for $3.70. (though choice!)

You may very well be able to find one in a local auto parts store. The AC Delco item is a yellow fiberglass type of material (I have a new one here). It's 4 9/16" diameter and about 1/8" thick.