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  • Roscomacaw
    replied
    How illogical is it to consider filtering the oil on the suction side of the pump?
    I know that there's been a way worked out to turn an early Stude V8 into a full flo, but it involves some goofy plumbing and drilling and tapping the block to some degree.[xx(]
    I've wondered tho, if one couldn't modify an oil pan to where a spin-on filter would mount to the side of the pan sump. The pickup tube/head would go to the spin-on filter and a braided flex line would end with a flare fitting that would be attached to the rear main cap's oil passage.
    You could get away with a little filter cartridge like new cars use. This would minimalize the problem of interfering with engine room clutter.
    If it's low enough on the sump, it'd be full of oil for startup - so what's to prevent doing this?[?]

    Miscreant at large.

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  • N8N
    replied
    Look at the interchange sheet on my web site there are numbers for several mfgrs. I know that Wix, Hastings, and Fram are all still available, and I think Purolator as well - you might have to special order them though if your store doesn't have them in stock.

    http://home.comcast.net/~njnagel

    good luck

    nate

    --
    62 Daytona hartop
    64 Daytona convertible (in boxes)
    http://home.comcast.net/~njnagel

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  • Transtar60
    replied
    Tractor Supply CO or NAPA will have PB50 or PB50 equivalents.
    Used on many pieces of industrial equipment and farm equipment.
    http://www.wixfilters.com/filterlook...&Submit=Search

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  • Guest's Avatar
    Guest replied
    I'm on my last FRAM PB50 partial flow oil filter. Any one know where to get those? All Stude Int has any more is some Purolator that are very rusty from sitting in water somewhere.

    Also, I'm using Rotella 15W-40 (in south Florida) rather than the 20W50 I used last. Anyone have an opinion on which is best for a never re-built 289? (15W-40 or 20W-50?)

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  • DEEPNHOCK
    replied
    Just to be double argumentative (huh?)....

    How can a partial flow filter get 30%?
    It is going to be supplied with whatever goes up that passageway to the head. Any big chunks are going to flow with the fast branch and it would be hard for them to 'find' that particular passageway.
    While I wil admit that any filtering is better than no filtering, but how much filtering is going to be done on a passageway that has as it's last fitting a .080" orofice?
    I know the answer... Not very much.
    Just like a lawnmower....change the oil at regular intervals and don't rely on the filter to do much more than make you feel like a good consumer.
    Jeff[8D]





    [quote]Originally posted by N8N

    well...
    As usual, I'm going to be an argumentative cuss and disagree.
    <snip>

    DEEPNHOCK@worldnet.att.net
    '61 Hawk
    '37 Coupe Express
    http://community.webshots.com/user/deepnhock

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  • Guest's Avatar
    Guest replied
    Nate, while I'm with you on the theoreticals (that is, that a partial-flow system can provide better filtration of oil if finer media is available), I can't agree based on the realities that the flow through the partial-flow system in question is comparatively low, less than 30% of the full-flow system, and not all of the oil is positively subjected to the media. But then, full-flow systems can't be held in overly high regard either as they're no better than partial flow under high pressure conditions (especially cold starts) when the bypass valves are forced open, bypassing the media completely. Perfection in filtration is evasive, but I'd much rather have either than neither.

    MarkC

    MarkC, 64 Y8
    Working in Spokane, WA

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  • N8N
    replied
    well...

    As usual, I'm going to be an argumentative cuss and disagree. IF (and this is, of course, a big if) your engine is in good shape and clean inside, the partial flow filter is a perfectly good filtering system. The only advantage to the full flow setup is that it provides a "safety net" should any big chunks of crap make their way through the pickup screen and oil pump. Theoretically, the partial flow setup can provide *better* filtration than the full flow, but I do not know if there are any cartridges available with media any finer than that used in the full flow jobs. I have my suspicions that the partial flow filters that you buy from the parts store use the exact same media as the full flow ones (20 microns or so.) Now if you could get an element rated for a smaller particulate size, say 8 microns give or take, that would be a valuable addition to any engine. Supposedly the "Frantz" type TP filters will do that, but there is just something about hanging a roll of TP in one's engine bay that seems somehow wrong to me. I sure wouldn't mind if someone came out with a depth-type replacement for a Fram C4 cartridge though, but that's neither here nor there - I don't think any have been made for years.

    That said, the right answer to the question is "however much oil it takes to reach the 'full' mark on the dipstick after running the engine until the oil filter is full, shutting it down, and letting it sit for a minute or so." Not a very exact answer, to be sure, but the right one <G> Probably depends on what kind of filter we are talking about as well, the F4 type or the spin-on type... I imagine the F4 filter would hold a smidge more than the spin-on...

    nate

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  • DEEPNHOCK
    replied
    Just put in 5 quarts.
    The partial flow oil filter is mostly cosmetic and just an visual feel-good item for owners desiring longer service intervals (in the fifties).
    Skip all the additives, and just change the oil like clockwork.
    Remember, it is harder on the engine if you don't run it often and to FULL temperature for a good hour...regularly.
    The less you run the car, the sooner you should change the oil.
    Oil is cheap. Crankshafts and bearings aren't cheap.
    Jeff[8D]

    DEEPNHOCK@worldnet.att.net
    '61 Hawk
    '37 Coupe Express
    http://community.webshots.com/user/deepnhock

    Leave a comment:


  • Guest's Avatar
    Guest started a topic Partial Flow Oil Change

    Partial Flow Oil Change

    How many quarts of oil should I put into a partial flow 289? I understand that about half a quart stays in, so I'm guessing 4 1/2 qts go in after I've drained all that's coming out.

    thanks
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