[DeTomaso] Techno question: Cleveland oil pump
jderyke at aol.com
jderyke at aol.com
Wed Oct 4 04:07:55 EDT 2017
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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-------------- next part --------------
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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Posted emails must not exceed 1.5 Megabytes
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