"95%" oil filter pressure drop across the filter

40cpe said:
I measured the ID if the -6 fittings I have, it is .271. The rear main already has it's oil, so the filtered oil goes straight to the valley tube, less what is lost at the fuel pump rod. I just checked the diameter of the valley tube and it is about 23/64. These fittings won't deliver all the volume a loose engine could use, I don't think.
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Now your seeing what's needed for flow the valley tube diameter 23/64 being .3593 is only part of it. The artery feeding the tube as well as the fuel pump push rod area is designed larger no doubt to allow adequate volume including wear in the bearings. Try to stay above the .421 size of the main artery and you will be fine.
 
OK, bringing up an old thread and subject, same engine as the rest of the thread. I now have Aeroquip fittings and hose 1/2" for my filter plumbing. I have slightly enlarged the 3/8" passages in the fittings. This is my first time experience with this and preparing for pushing the hose on the fittings, I goolged the subject and find horror stories about getting the hose on the fitting fully. I have hot water, heat gun, lubricants, vise, gloves, at hand. It sounds like the worst case scenario is getting the hose part-way on and can't get it any further or back off. Ideas to increase my chances of success (except a $250 tool) are much appreciated.
 
I put the fittings between 2 pieces of wood in the vice,dipped hose end in hot water,lubed inside of hose and pushed it on. No problems.

John
 
40cpe, I also use Aeroquip socketless fittings and hose. I use Eaton hose assembly lube and a heat gun, with the fitting secured in a vice. A little practice with excess hose will get you comfortable with the procedure, and how much heat is really needed.
 
It's more expensive but all I ever use are the standard thread on fittings from Aeroquip or Stratoflex with braided stainless line. Aeroquip got into the automotive market but the standard aircraft stuff was likely too expensive for that market. The aircraft stuff is available from Aircraft Spruce but it ain't cheap at 35 to 75 bucks per fitting on the AE701 type hose in the -6 category.
 
mike42 said:
You know it's funny.....when I was a kid and had a 1950 Ford. I just started it up Summer or Winter and ran the hell of of it. Never a problem. Now we are all worried about so many different things and nursing these flatheads along ! It makes me chuckle....!
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You know Mike. As a kid I had an early 38 Ford. Still got it. Its refreshed 21-studder has now been running again for the past 6 years. But without a bypass to filter out sand. Not even a full flow to filter out rocks. No filter at all to worry myself about pressure drops. Except of course for the screen on the pump. That can get clogged and cause pressure drop problems. So I do baby it. Change the 5W-20 synblend every year or 2K miles, whichever happens first. Just like recommended in the old days. 8^) Jack E/NJ
 

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I installed the hose on the fittings this morning. No drama, went much better than expected. A couple of minutes with the heat gun, a little lubriplate, and they went to the collar. One thing that I read gave me confidence: If you need to remove the hose from the fitting, use a soldering iron with a spade tip to cut down the length of the fitting. Removes the hose without damaging the fitting.
 
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