oil filters

[David Pollock]

RE 41 Ply Filter.

       If there is no filter on the engine, it will run just fine as the filter if equipped is of the Bypass type. It can be of the sealed cannister type or have a replaceable element. It mounts to the cylinder head just forward of the temperature gauge fitting.

      The pressure side  can be plumbed from one of the 4 pressure ports on the verticle face of the block, but usuallly the one nearest the dipstick  and this line goes to the side or the top of the cannister.  NOT THE BOTTOM as this would tend to expand the element and possibly rupture it with disastrous results.

      The drain goes from the bottom of the cannister and into a threaded hole which faces upward, beside the dipstick and directly over the pressure relief valve. This is important so that oil only flows through the filter when the relief valve is open.   Use inverted flare fittings, and steel tubing 3/16" which is available ready made at any auto supply.    Elements are available.   If your local auto supply does not stock them, go to a tractor or HD equipment shop.  Baldwin brand P73 is a good fit for most Plymouths. In any event, make sure the filter element is sealed against the center pipe in the cannister, otherwise it will not filter anything.    DPollock

[32cabrio]

A throw away canister oil filter was standard equipment on the PB according to the manual. 32 Cabrio.

[TodFitch]

At least on the DeLuxe (PD) model for 1933, oil filters were standard from the factory. If I recall correctly, they were also standard on the original PC. Not sure about the later PCXX.

[JimCno]

Every shop manual I've ever seen of a Plymouth flathead six showed an oil filter, so Chrysler didn't seem to think anything was wrong with having one.

[Wm Steed]

There has been some very good imput about how and what to use for a oil filter, however I am going to add something about the real world of after market filters.

Very few engines/cars, prior to the advent of full flow filters, came with oil filters as original equipment. In fact, if you read the owners manuals/repair books on a lot of "old cars" you will find that the manufactures did not recommend the oil filters.

I can remember instance's where I had engines rebuilt, the garages refused to hook up the oil filter that was on the car saying that they had seen far to many engines ruined as a result of broken oil lines. I resently had the straight 8 engine in a 53 Pontiac I own rebuilt. The car did not have a filter so I went looking for one, finding one I took it to the garage that rebuilt the engine, they refused to put the filter on, they showed me right in the GM Pontiac book where the accessory type filters were not recommended.........Another $35.00  wasted.

There probably was a time when most of the roads were dirt/gravel that oil filters were of some help to extend the life of the oil, however on the roads of today, the quality of todays oils added to the limited use most old cars get, a person might be wise to rethink the idea of adding an oil filter to their engine.

[JimCno]

You are correct.

[Don St Peter]

Someone double check me on this but I think the oil filter plumbing is: The filter "in" line is on the bottom of the housing and hooks to the block lowest port just aft of the oil dip stick. The filer "out" line then goes to the upper port just aft of the dip stick. In other words upper to upper & lower to lower.
Don

[plym_46]

Not unusual for a vehicle of this vintage to be with out an oil filter.  They were optional equipment and many times they were added by the dealer, or through the accessory aftermarket shops.  If you look at cars of the period, you will see different color canisters, representing different manufacturers, AC, autolite, Purolator, and some made by these folks but painted and labled for car manufacturers.  They are relatively easy to acquire from swap meets and e bay, and are relatively easy to plumb into the oil galley casting on the side of the block. (the same one that the oil pressure gauge is fed from) The return goes into the block near the dip stick.  All the places for fittings are there and fitted with pipe plugs.

[TodFitch]

There are two styles of oil filters used in that era: 1) A sealed, throw away, canister. 2) A permanent housing with replaceable filter element.

The replaceable filter elements for the second type are still available but which element you need depends on your housing. NAPA 1088 has been mentioned on other forums as a typical one but your mileage may vary.

The sealed canister type filter stopped being manufactured about three years ago. It is unlikely that you can find a auto supply store that still has one on the shelf. The last part numbers for that filter were WIX 51035 and NAPA 1035. A previous thread to this forum indicates that Roberts Motor Parts has fresh manufacture filters (part number T54), so perhaps they are having them custom made. Cross reference information for the sealed canister can be found at:

http://www.ply33.com/Parts/Group10.html

I just notice that my "live" site does not have the reference to the Roberts filter even though it is on my "sandbox" work area. I will update the server shortly. In the meantime, here is the contact information for Roberts:

Roberts Motor Parts
17 Prospect Street
West Newbury, MA 01985
Telephone: 1-978-363-5407
Fax: 1-978-363-2026
email:
http://www.robertsmotorparts.com

[pletch]

I have a 41 plymouth special deluxe is there a filter i cant seem to find one, I just recently got the car and it hasnt been driven in about 15yrs so im trying to get it ready for the summer any other sugestions would be apprieciated  ???