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View Member ProfileSend Private MessageFind Member's Threads Find Member's Posts graystar Registered: 12/16/08 Posts: 1

12/16/08 at 03:59 PM   Reply with quote #1 I have a large FP heat exchanger taken from (I'm told) the cooling system of a big rig.  It only has ports for one liquid and then exchanges with a large metal surface area.  (i don't have a good camera and couldn't find one online).  LoL I hope that makes since.  I want to weld it inside my main tank on my truck so that the main tank will be coolant heated.  Am I crazy?  Its probably copper and would that make an issue heating semi stored VO in my tank?  Would it hurt to run in during the summer too and keep my engine temp low?  This would be, of course, in addition to HOH and heated filter + maybe a FPHE in line but don't those have copper too? Thanks a million! Loading...

View Member ProfileSend Private MessageFind Member's Threads Find Member's Posts danalinscott Moderator Registered: 05/30/06 Posts: 720

12/17/08 at 12:10 PM   Reply with quote #2 Whole tank heaters were once the standard for VO conversions. However it was soon discovered that it was much better to only heat the fuel pickup or area immediately around the fuel outlet. Adding too much heat to the VO in a tank promotes VO polymerization more than any other factor. Small amounts of copper have little effect on rate of VO polymerization compared to heat or exposure to air.  But you definitely do not want to add a lot of heat to a tank of VO...just enough to allow it to flow easily at cold ambient temperatures. It then should be progressively warmed as it flows toward the IP ultimately reaching 150-160F as it passes into the IP. If practical it is then best to heat the VO to as near to 300F as possible before it enters the injectors. Since diesels are made to combust most efficiently at high engine temps the last thing you want to consider s lowering the engine temp even in the summer. __________________ Dana danalinscott@yahoo.com Loading...

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