[SEL] OT - expansion of metals in oil pumps

[Skip Cleveland]

Get the pump from a Jeep Cherokee with a 401 engine . I beieve it is made of 
iron/Any how , it's supposed to fix your problem.
Skip
----- Original Message ----- 
From: <bill at antique-engines.com>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Tuesday, March 29, 2005 8:56 AM
Subject: RE: [SEL] OT - expansion of metals in oil pumps


> Thanks, so for 350 horsepower I'd need 3 times 350 drops of oil per minute
> or 1050 drops per minute.
> How many drops in a quart?
>
>>> For the engineers - rob, etc.
>>>
>>>Engine oil pump - automotive gear type. Gears are steel (or
>>>some sort of steel product) housing is aluminum - timing
>>>chain cover with pump body in the timing cover. The gear
>>>to housing end clearance is supposed to be VERY close to
>>>get the pump to put out good pressure. A lot of folks say
>>>this is a weak design - that the aluminum will expand more
>>>and open clearances between the gears and the housing.
>>>They claim the fix is to use aluminum gears in the alum
>>>housing so they expand at the same rate, meaning a more
>>>accurate and tight pump, longer life, higher pressure, etc.
>>>
>>> Thoughts?
>>>
>>> Bill
>>
>>
>>
>> Under full load, about three drops per minute per horsepower.
>>
>> Rob
>>
>>
>>
>>
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