Search results

The bypass filter has not been installed yet (not aquired either, for that matter), but will be connected to the "Pre Filter" port shown in the image below. It will drain into the oil pan one way or another. I'll test D-man's filter first, so it may be a while. For oil temp, you pick the spot...

Ernie, the only "remote" non-drained filter that is not going to upset the oil flow by the extreme cold is a bypass filter and as mentioned before, that's my solution of choice here, a compromise, yes, but it will get the oil cleaner. Having said that, I have agreed to test Devilman's full-flow...

Okay, revised images...

Another midcourse correction....it's not obvious from the images, but the filtered oil enters the cooler at the bottom and exits at the top where the sampling valve would be installed. A channel inside the casting runs the oil back down and out to the bearings etc. Only about a 1/4 of the...

Mike, the results are only preliminary. It was 30°F yesterday morning and I'll have to check it several more times at different engine temps. Anyhow, a mechanical pressure gauge was installed in the "prefilter" port (shown above) for the initial run. I'll outline the procedure when I have more data.

There are other check valves, of course. A flow rating (Cv) of about 7 would produce a drop of about 8 psi at 20 gpm, which should be acceptable. I was doing some preliminary pressure testing this morning and starting at 30°F produced a pre-filter pressure of 95 psi!! It dropped to about 60...

Possible check valve location. Available depth is about 1-1/2 inches.... With the filter base removed like this any decent machine shop should be able to install a check valve. Makes one wonder why it wasn't done from the beginning. Suitable check valves may be found here (material, flow rates...

Prelubing via the filter housing port(s) may not be possible, if the oil drains back to the pan when the oil pump stops, why wouldn't it be pushed back that way with the external pump also? The "oil entrance" marked in one image above is the ideal location for a check valve and may be the...

Positive, Patrick. That's why the thing is taken apart, to check the plumbing. :-)

Patrick, this image may help you decide where to inject the prelube oil.

Sell? Not really, I use these "junk" parts for pictures and when planning new projects. Should be plenty around from other parts engines.

Here is a view with the filter base removed. Second image shows the back side of the filter base.

For the sake of the engine, I hope you have done your homework, never underestimate the engineering of the 1960's.

As far as plumbing in the bypass filter, I'm inclined to use the pressure gauge connection. Adding a Tee and combining the drain to the oil pan with the turbo lube drain, if practical.

Dug up some more info, the oil pump capacity is 22 GPM at 2,600 rpm and 180°F for the multies except for the -2, which is 29 GPM at 2,800 rpm (all 30 weight oil).

Perhaps a mil-spec 25 micron filter isn't all bad then (Parmatic 690058, Purolator 65374, Wix 051596 etc). I'm only playing the devil's advocate here, trying to find a reasonable explanation for the massive 25 micron oil filters on the multies. Adding a bypass filter looks mighty attractive (a...

Hmm...so the soot dropped out and collected in the pan. Wouldn't that mean that there was a lot less soot in the oil then, reducing the requirement for the filter to filter it? If the pump didn't pick it up, it would stay in the pan until oil was drained/changed or is that wrong? Do the new oils...

Here is one more, how does different oils handle soot? It's abrasive and if the oil didn't carry it along, but let it drop to the bottom of the pan it would be harmless... is there a difference here in how oils from the 60's handled soot compared to current oils?

Kenny, I got lots of questions, most go unanswered though.... Guess i'm getting lazy in my older days. :-)

Another question, does the built-in bypass valve found in some filters work on absolute or differential (as found on the multifuel engine) pressure?