Yes we did go through this a while back but power required to drive
the pumps was not discussed that I saw. Hence my question. It appears
that the actual numbers are hard to get or nobody has them (which I
doubt). Positive oil pressure during shutdown is the real reason I
would consider a dry sump. Windage problems will happen with or
without. Do I really need one? I could check the rod bearings on the
cap end to see couldn't I?
At 10:44 AM 1/1/2009, drmayf wrote:
>Skip, didn't we have a bout of this some time ago (ie, wet vs dry
>sumps)? I dimly remember. But for a multistage pump, ie, one
>pressure, maybe three scavenge, I suspect it has to be more. No
>numbers, though.....I am watcing to see if anyone has them along with you...
>Skip Higginbotham wrote:
>>Anybody have dry sump pump drive hp numbers? Might be an
>>interesting comparison to submerged pump hp.
>>Happy New Year!
>>At 10:26 PM 12/31/2008, you wrote:
>>>I agree with all your pointers.
>>>Heard a story, BS or not about a Pro/Stock team dyno testing the
>>>bottom end for least oil windage. Best HP 1380. Then one suggested
>>>filling the oil tank and doing one quick pull with NO PAN !
>>>I figured a slight gain thru no pan cancelled out by lost power
>>>from no pan vacuum. Story goes power jumped to 1420 HP. Less power
>>>to drive pump had to be part of it
>>>however...........................didn't catch on. LOL.
>>>> External screens are conducive to proper maintenance whether
>>>> integral with the outlet on the pan or in line. The screened
>>>> pickups require the pan be dropped, the windage tray removed and
>>>> in some cases the pickups themselves removed from the pan for
>>>> cleaning and inspection. We check the filter and screens after
>>>> every run. Dyno tests we ran at Billy Williams shop on Dale
>>>> Smarts drag race motors (blown alcohol) proved that the deeper
>>>> the pan the better, dry sump or not.
>>>>Jim in Palmdale ____________________________________________
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