[DeTomaso] Electric oil pump?

[Thomas Tornblom]

Tomas Gunnarsson skrev:
> I'm surprised at the low power needed to drive the pump. When your drill struggles, is the torque you feel something you think would shear the distributor gear pin?

No, but I definitely need to hold the drill with both hands. The drill 
is a 0-3000rpm drill, no low gear.

> 
> Tomas

Thomas

> 
> ----- Original Message ----- 
> From: "Thomas Tornblom" <Thomas.Tornblom at Hax.SE>
> To: "Tomas Gunnarsson" <guson at home.se>
> Cc: "DetomasoList" <detomaso at realbig.com>
> Sent: Wednesday, November 04, 2009 9:40 PM
> Subject: Re: [DeTomaso] Electric oil pump?
> 
> 
>> Yes, I thought about using a dry sump pump with an external motor, but  
>> I'm not convinced that they are suitable for  many years of trouble  
>> free service, just as I'm not convinced about the longevity of the  
>> Meziere electrical water pumps either.
>>
>> I'm amazed at how much power you need to drive the standard oilpump.  
>> I've used my trusty mains powered 400 watt drill when priming the  
>> oiling system, and it struggles really hard when the the pressure  
>> builds. That is around 1/2 hp and it would be around 30 amps at 12  
>> volts, which sounds excessive.
>>
>> I would have more faith in something that a major car maker installs  
>> as standard components in a standard car. A Bosch logo would probably  
>> also help. ;-)
>>
>> Thomas
>>
>> 4 nov 2009 kl. 21.05 skrev "Tomas Gunnarsson" <guson at home.se>:
>>
>>> This doesn't sound too hard. Running a single stage external pump of  
>>> the same type as dry sump engines use would cover the pump part.  
>>> I'll leave finding a variable speed motor and driver to you. I tried  
>>> calculating the theoretical need for power and came up with a  
>>> surprisingly low number, only a few hundred watts. On the other hand  
>>> priming an engine through the distributor hole with a power drill is  
>>> standard procedure and those drills aren't overly powerful either.
>>>
>>> Tomas
>>>
>>> ----- Original Message -----
>>> From: "Thomas Tornblom" <Thomas.Tornblom at hax.se>
>>> To: "DetomasoList" <detomaso at realbig.com>
>>> Sent: Wednesday, November 04, 2009 9:07 AM
>>> Subject: [DeTomaso] Electric oil pump?
>>>
>>>
>>>> With all the talk about the benefits of electrical water pumps, what
>>>> about the oil pump? I've read somewhere that new, energy efficient
>>>> engines will use electrical oil pumps to reduce engine drag.
>>>>
>>>> Are there any commercially available electrical engine oil pumps that
>>>> are suitable for a low maintenance ordinary car?
>>>>
>>>> I'm looking for something similar to the high pressure fuel pumps  
>>>> that
>>>> all cars have had for the last 30 years, which provides years of  
>>>> trouble
>>>> free use.
>>>>
>>>> Having electrical instead of mechanical pumps would allow running  
>>>> them
>>>> at optimal working conditions. No oil pump relief valve, just  
>>>> reduce the
>>>> pump RPM if the pressure is too high, and regulate the water pump to
>>>> obtain desired engine temp, no need for a thermostat, other than
>>>> possibly for warm-up circulation.
>>>>
>>>> Now that I have a roller everything valve train, and potentially  
>>>> usable
>>>> electrical water pumps, it would be nice to have just the alternator,
>>>> A/C compressor and valve train as power robbers, and being able to  
>>>> run
>>>> the pumps independent of the engine gives advantages like pre-lube,  
>>>> easy
>>>> bleeding, after cooling. Removing the water pump also allows a flat  
>>>> bulk
>>>> head cover.
>>>>
>>>> Maybe I should look into a return-less fuel feed also. No need to run
>>>> the fuel at full RPM while cruising at low load...
>>>>
>>>> Thomas
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