[DeTomaso] Techno question: Cleveland oil pump

[cengles at cox.net]

Dear Thomas and Jack,


           It would appear that the 351C pump may well be the heaviest 
of the Ford series.

           It would also seem likely that it does take more than 
"normal" torque to turn the 351C.


                 Thank you gentlemen,  Chuck Engles






On Wed, Oct 4, 2017 at 5:37 AM, Thomas Törnblom wrote:

> As for the power it needs, my 400W drill really struggles when I use 
> it to prime the oiling system. I can only run it in short bursts 
> before it starts to smell hot electronics.
>
> /Thomas
>
> Den 2017-10-04 kl. 10:07, skrev Jack DeRyke via DeTomaso:
>>     When I was looking for a lightweight oil pump for my Fontana 
>> block many
>>     years ago, I borrowed pumps from a Ford 302, a 351-W, a 390/427 
>> FE and
>>     a 460. The gearotors all were the same diameter but the thickness 
>> was
>>     greatest in the 351-C. The pump body was large & heavy since 
>> Clevelands
>>     only got cast iron pumps & as usual I wanted to lose some weight. 
>> So I
>>     put a Cleveland gearotor set in a std die-cast aluminum 351-W 
>> pump,
>>     which required a thick machined spacer-cap. The 460 pump was 
>> smaller &
>>     shorter. That's why I said the Cleveland pump was quite a bit 
>> larger
>>     than any other Ford gearotor oil pump. Haven't measured flow in
>>     gallons/minute but a taller rotor & impeller running at the same 
>> speed
>>     into the same size oil passages pretty much has to yield more oil 
>> flow.
>>     I first did this trick to my poor little Corvair 6 in the 
>> previous
>>     century: that thing ran 270,000 really hard miles with taller 327 
>> Chev
>>     V8 pump gears adapted.
>>     Cheers- J DeRyke
>>     -----Original Message-----
>>     From: Charles Engles <cengles at cox.net>
>>     To: detomaso <detomaso at server.detomasolist.com>
>>     Sent: Tue, Oct 3, 2017 5:01 pm
>>     Subject: [DeTomaso] Techno question: Cleveland oil pump
>>     Dear Forum,
>>     I found this in an old archived email from 2004:
>>     "The extra-large Cleveland oil pump requires a great
>>     amount of torque to turn. The Cleveland pump is the largest of 
>> any
>>     small block engine. "
>>     In my amateur engine building, I have never run across
>>     any reference such as that.
>>     Does anyone know if it *is* the largest oil pump of
>>     any small block engine?
>>     Does anyone know *how much* torque is required to turn
>>     the average Cleveland pump with average weight oil???
>>     Curious, Chuck Engles
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