Engine/Transmission (1998.5 - 2002) Fuel Temp, Mileage, VP Cooling

[Mundgyver]

Another question for the forum has arisen.



In putting on the FASS system, which works very well by the way, I have been asked by several individuals if I had hooked up the heating line ports. I have not done this as I do not live in a really cold part of the country. But it does bring up a question.



1. At what temp is the VP cooled??



2. By heating up the fuel using the heating ports, would this create a cooling problem for the VP??



3. Would this lead to additional wear for the VP??



4. By heating up the fuel, would we get better mileage?? I have seen this done in gasser automobiles with some success, but only on the older carburetor types.



5. By heating up the fuel, would we gain power or loose power?? Cool fuel is denser which should give more BTU, but warm fuel atomizes easier and would burn more completely, at least that is my basic understanding with gas.



6. Does anyone have any definitive knowledge about questions 1, 2 and 3 or would I be on a limb if I started testing this idea??



Food for thought and exploration here. Thanks for taking time to read this.

 

[illflem]

According to research trials when diesel fuel temperature is stabilized between 170°F and 192°F, it liquefies into a finer spray allowing more complete combustion which results in more power, less emissions and greater fuel economy.

Tests were done in Israel on Cat and Kubota engines but I would think it applies to Cummins also.



You can buy a device that does this by heating/cooling with circulating engine coolant

http://www.smartmaintenance.com/UDL.htm

 

[Mundgyver]

Very interesting Now the question to be answered would be for the VP. We all are of the understanding that the VP is cooled by the fuel. Is there a recommended temp for the VP or would bringing the fuel up to engine temp be bad for the VP If the VP can handle the fuel at the same temp as engine coolant, this would be very interesting to try.



My problem is that I don't want to sacrifice my VP should the thinking be wrong with regard to fuel temp.



Hopefully someone will chime-in that has that GOD-LIKE-KNOWLEDGE that we all seek in the pursuit of the perfection of our individual rigs.