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FFM heater and control of it

orrum

orrum

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Orrum North Carolina
Buddy I think has a post on here somewhere discussing the heater in the FFM, I cant find it again so here goes. I have the square FFM and supposedly there is a heater in it, what controls the heater? Seems like Buddy said it has a thermastate control? Buddy jump in please on this. So I have a new fangled mount and filter from Leroy that u can add a heater into it, if I leave the heater on the square filter functional and also put the heater in the new FFM will the new one heat the fuel and cause the old one to not come on and heat? I want both to function because I am going to run a WVO blend and want all the cheap easy heat I can get. I am going to put the new one on a switch so when running straight diesel I can turn it off. Thanks
 
The thermostat is right in the heater itself.[pink wire is the heater]. It comes on at 45 degrees or somewhere near that.
 
I'd think you would be better off using engine coolant in a heat exchanger to heat the wvo. Many wvo systems heat the fuel tank. Warm fuel is much easier to pump.
 
I use a single tank blend unheated in my Mercedes and intend to use a similar blend in the 6.2 with a single tank and basically no heat other than resistance wire heaters on the injection lines and whatever I can get from the FFM's. My blend has basically the same viscosity of cold diesel. If it works simple like this with the 6.2 then good if not oh well I tried. Should work really well in the southern climate we have. My Mercedes runs on it and has for over a year and 10000 miles. On the bright side wvo lowers the operating temp of ur engine! Need to bypass that thermastat.
 
Heh Heh I got a Walbro ordered from Leroy that should pump peanut butter and jelly sandwiches! LOL Seriously hillbilly engineering Jethro Bodine fanatic here! :eek:
 
Just remember that on the old mercedes diesels the IP was lubricated by the engine oil. It didn't much care what it was pumping. On the 6.2 the IP is lubricated by the fuel, which mean fuel flows throughout the entire IP. If you swap from a relatively thin fuel like diesel to a thick fuel like cold WVO with the engine running you'll seize the IP from temp shock, and you'll need a new IP.

Best to heat the WVO before using it, and also best to start and shutdown on diesel fuel.
 
Thanks Dave I read up on thermal shock shearing the IP shaft and I feel that is one good reason to use a single tank no heat system and I am willing to chance it since my blend I hope is thin enough and also wvo lubricates way better than diesel. I know a lot of farmers that r running wvo straight and unheated in their John Deere tractors with stanadyne pumps with no issues. Plus the older Ford powerstrokes r supposed to be darn near as tough as the Mercedes at running on wvo and they use the same DB2 pump we use except it runs backward from ours. Lot of folks trash their IP with wvo but the IPs are hi mileage and shot before they start. I just cant believe its that difficult. Yes Mercedes lift pumps r lubricated by engine oil that u add to the lift pump reservoir. Take my word for it u dont want to add engine oil to the LP or change the oil either! U will definitely blow the seals on ur hand primer pump and then suck air into the fuel and have all kinds of problems! All those older model Lift pumps leak internally and are self lubricating from diesel, if u change the oil u only add like 10 ccs of engine oil back and its gonna build pressure up cause diesel will get in there and cause it to be overfilled and the thick oil will blow the seals when it overfills but the diesel or veggie oil just flows back and forth. I dont know 6.2 gm stuff but my Mercedes took me to school on their version of diesel engines! Interesting fact, Tom the head of the classic diesel service dept for Mercedes America will tell u they have never had a IP returned for rebuild that needed rebuilding, they do it only after notifying the party that it meets specs and the party says go ahead and rebuild it anyway! Them germans got some skills!!!! There is a huge difference between burning straight wvo and blended wvo. I know lots of folks that trashed their Mercedes with it too but they dont pay attention to the quality and cleanness of the wvo. Oh well I am thinking if I trash my IP u guys will talk me thru changing it out. LOL Me stubborn hillbilly n gonna try it no matter what. I think Leroy, Burning Oil ran it blended with no heat in his diesel tank and ran straight wvo in the other tank for 60000 miles or something huge like that.
 
There is a local fellow here that I know has run just about anything that will burn through his 6.2.

WVO, Used engine oil, varying grades of diesel fuel, JP8 with some engine oil added and just about any other wretched combination of stuff that he can find to dump in the tank.

If your mix is not too heavy it should do fine.

Missy
 
Thank u Missy!!!!!!!! My goodness a voice of confidence in a wilderness full of dissent!!!! Wow that sounds like a TV preacher. Glad to meet u Missy and again thanks for the positive thought!
 
i am gonna start running 'super fuel'. a mix of wvo, power service cetane boost, RUG and kerosene. the recipe i have came from one who has 60,000 miles on the stuff in his 96 cummins. i priced out the ingredients and will cost a little over a dollar a gallon, if the WVO is free. it's as thin as #2 in the summer but gets a little thick in cold so i might just run it in the summer, 9 months a year here.
 
deejaaa said:
i am gonna start running 'super fuel'. a mix of wvo, power service cetane boost, RUG and kerosene. the recipe i have came from one who has 60,000 miles on the stuff in his 96 cummins. i priced out the ingredients and will cost a little over a dollar a gallon, if the WVO is free. it's as thin as #2 in the summer but gets a little thick in cold so i might just run it in the summer, 9 months a year here.
Click to expand...

Remember the cummins P7100 IP is lubricated by the engine oil IIRC. A pump lubricated by the fuel(The DB2/DS4) might not last on that concoction.
 
Deejaa my mix is 5 gal of wvo, 1 qt regular gas(try to find some without the gasahol, usually marinas sell non gasahol cause boats cant use gasahol). 2 qt k-1 kerosene, 4 oz Power Service in the gray bottle. I use a paint stirrer on a cordless drill to stir it. I drove my Mercedes in the winter on the interstate with snow on the ground and 25* no problem. U better have a extra filter setup and a fuel pressure gauge to tell when the filter is plugging up. The IP will cavitate and wear out or shear the shaft in a DB2 if the filter is stopped up.
 
orrum said:
Deejaa my mix is 5 gal of wvo, 1 qt regular gas(try to find some without the gasahol, usually marinas sell non gasahol cause boats cant use gasahol). 2 qt k-1 kerosene, 4 oz Power Service in the gray bottle. I use a paint stirrer on a cordless drill to stir it. I drove my Mercedes in the winter on the interstate with snow on the ground and 25* no problem. U better have a extra filter setup and a fuel pressure gauge to tell when the filter is plugging up. The IP will cavitate and wear out or shear the shaft in a DB2 if the filter is stopped up.
Click to expand...
that is exactly what i will be running. i have 10 gallons of veg, clean, that i will run this week. i have a dual filter and pressure gauge already. sounds like we are on the same page!
 
just mixed 10 gallons up. i used diesel to cut it, didn't want to buy kerosene but i had everything else in the shop. gonna pump it in a little later and run it in the morn. hope it works. money for fuel is tight this week after i went to the junk yard, don't want to use the plastic. thanx for your input orrum.
 
Diesel does not thin nearly as well as k-1 in the wvo. How much diesel is in ur tank already? Dont want to scare u but this wvo thing is like a very strict chemistry experiment. U gotta stick to the formula strictly. That and filter filter filter!!!! U have to balance cetane and octane and viscosity. U will probably b ok since u got some diesel in ur tank now but the next time u really need to stick to the recipe.
 
If it makes you feel better in summer I would mix 50% to diesel thats it. Ran fine. The straight wvo was heated in a 2 tank system.
I also would run used trans fluid & motor oil in it (filtered of course)

Edit: this was on my old 93 with a DB2 IP
 
Burning oil said:
If it makes you feel better in summer I would mix 50% to diesel thats it. Ran fine. The straight wvo was heated in a 2 tank system.
I also would run used trans fluid & motor oil in it (filtered of course)

Edit: this was on my old 93 with a DB2 IP
Click to expand...
how long did you run it and did you look at the injectors to see if there was any buildup? when i was running trans fluid, my injectors fouled. filtered but not 'fuged.
truck ran real good this morn. seemed to have more power but can't measure that. i have 10 more gallons of veg oil so i will use it later in the week.
 
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