rlcokc@aol.com

I've read posts which state the Purolator filters are different than the "bypass" filters which is referred to as the Heavy duty oil filter diagram attached to original post. The crate engine as well as the attached drawing to this post is a purolator filter. The "input" for the crate engine and diagram below are identified as the upper connection to filter with the return/output being at the bottom of the filter. Clearly the "bypass" filter shows the return from location towards top of filter and pressure port connected to bottom of filter-the feed for the oil. What I can't figure out is the difference in function/operation of the filter if the source of feed/input is switched/backwards. Does it really make a difference insofar as efficiency or operation. Not sure I understand explanation of sock vs pleated filter but would assume there is a difference associated with different media and the source of pressure port/ input. Appreciate the discussion and helping me understand the application and operation.

Need to know how to plumb the oil filter pictured below on my 41 Plymouth pickup-PT 125. Pressurized oil ports run along the raised part of block and return is just above oil pressure relief valve. photo shows how I have plumbed-the upper port-pressurized-to the upper connection to filter and the lower port-return-to the bottom of the filter. I believe this to be backwards as the as the legend of filter diagram shows oil filter to engine connecting to upper connection on filter and the engine to oil filter connecting to bottom of filter. Posted on the 39-47 dodge site and not really definitive answer and thought I would limit the inquiry to installation of this filter. Thanks in advance. Rod

I've used Pauls who did a fantastic job and really expensive. That was some time ago and for the last several years I've used Cambridge Custom Chrome in Canada. They also do good work and may be a little bit cheaper than Paul's because environmental regulations not as strict in Canada. The cost of replating is certainly going up and cost of badly pitted 36 buick hood ornament $700 within the last few months. Altho really badly pitted I would say the cost increased %30-40 in last 5-10 years. Good luck with jproject.