Packard Forum Index » Modification Discussion

Oil pump float adjustment is covered in the SM. Check for dipstick interference woth float. Mine had interference. Had to cut about 1/4" from end of dipstick.

As can be seen in the picture I copied from the 55-56 manual on this site, the gasket is in plain site and carries a part number. My oil pumps have all had gaskets.

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Craig,

respect your opinion, ,

this pump has spring set like the bottom picture, so we have the gears as an issue ,HV gears which i would of put on if they dropped in.

as your other points, will have to wait and see what happens when i get it running, i am not going to drag race, so i think pressure will be fine, i could test this pump now, but i want to get it on the road,

the egge pump i had held great pressure,,,,,and that didn't even have the PI design,

craug, i think your melling design is great, but like others i like the Packard,,

having the dist, shaft oil pump shaft on a single plane takes out the wobble, which is what the 2 piece created.

i made the tongue of shaft fit snug in dist gear, no movemnet there......

v8, thanks,,

float, i followed packard, in a way its hit or miss, they just show you under pump, i was probaably at the wrong part of filter,

which i did before with no problems,,, the gears bind without the plate,

i hope i got float right , never had a problem with dip stick

yes cam is in,

ready to close up bottom.

thanks,,

thanks randy,

so its under bearing,,

i see it now,,

well off comes pump............

thanks again randy,

i thought mine had one when i took it apart, and put it together,,

Riki Quote:

No, it does NOT! The issue is NOT how the pressure relief spring is retained (gland cap--top or cotter pin--bottom), the issue is the length and shape of the sleeve valve and the length of the relief spring. Since the oil pan is not yet on yours, take the oil pressure relief section apart and you will find it is the Packard design. It CANNOT be the Olds design. That makes the only sense and your own pictures prove that.

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Most oil pressure failures reported to me in the V-8 were at IDLE or low engine speed. NONE were ever drag raced including my own 1955 Pat which had zero oil pressure at idle, a commonly reported behavior due to the deficiencies of the Packard oil pump DESIGN.

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I appreciate that you have expended time and energy "fixing" your Packard oil pump. But you cannot put lipstick on a pig and have it be anything but a pig. It's much cheaper in the long run while the engine has the pan off and is on an engine stand to buy the Olds pump and adapter kit from Jack Vines and fix it correctly now...otherwise, good luck.

JMHO

Craig

craig,

this is it, also used in PI pump.

to late to stop now,...for my own sanity, need to see how this works,,

i have a pump that uses the bolt, i never used it,, been around here 40 plus years...

thanks for the input,

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my parts book now has a drawing of gasket on plate 29a,, grp# and pt#,

thanks randy,,,,,,,,,

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Yes, sorta. The Packard V8 oil pump gears are identical to those of the '50 Cadillac.

No, the Cad shafts are .005" larger diameter and different end, so they won't directly interchange.

Maybe, Packard just figured if it was good enough for Cad, they had Melling or whomever make a different pump body and shafts, but use the same gears with just smaller diameter holes.

jack vines

i looked at a 56 cad pump, they extend the shaft to go into plate i guess,

guess thats where the idea came from....