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Showing content with the highest reputation on 12/29/2019 in all areas

  1. 2 points
    Some research I did a few years ago on this subject. Posted March 10, 2016 1. From U. S. Department of Energy: Alternative Fuels Data Center: http://www.afdc.energy.gov/fuels/biodiesel_blends.html "Pure biodiesel (B100) contains about 8% less energy per gallon than petroleum diesel. For B20, this translates to a 1% to 2% difference, but most B20 users report no noticeable difference in performance or fuel economy." 2. From U.S. Department of Energy: National Renewable Energy Laboratory: 100,000-Mile Evaluation of Buses Operated on Biodiesel Blend (20): http://www.nrel.gov/docs/fy07osti/40128.pdf "The fuel economy for both petroleum diesel and B20 groups was 4.41 mpg based on in-use fleet data. An approximately 2% reduction in fuel economy for B20 was measured in laboratory emission testing." 3. From Pacific Biodiesel: http://www.biodiesel.com/biodiesel/benefits/ "I want my MPG! Many alternative fuels have difficulty gaining acceptance because they do not provide similar performance to their petroleum counterparts. Pure biodiesel and biodiesel blended with petroleum diesel fuel provide very similar horsepower, torque, and fuel mileage compared to petroleum diesel fuel. In its pure form, typical biodiesel will have an energy content 5%-10% lower than typical petroleum diesel. However it should be noted that petroleum diesel fuel energy content can vary as much as 15% from one supplier to the next. The lower energy content of biodiesel translates into slightly reduced performance when biodiesel is used in 100% form, although users typically report little noticeable change in mileage or performance. When blended with petroleum diesel at B20 levels, there is less than 2% change in fuel energy content, with users typically reporting no noticeable change in mileage or economy. Superior Lubrication for Your Engine The injection system of many diesel engines relies on the fuel to lubricate its parts. The degree to which fuel provides proper lubrication is its lubricity. Low lubricity petroleum diesel fuel can cause premature failure of injection system components and decreased performance. Biodiesel provides excellent lubricity to the fuel injection system. Recently, with the introduction of low sulfur and ultra low sulfur diesel fuel, many of the compounds which previously provided lubricating properties to petrodiesel fuel have been removed. By blending biodiesel in amounts as little as 5%, the lubricity of ultra low sulfur diesel can be dramatically improved, and the life of an engine’s fuel injection system extended" 4. From GAS2: http://gas2.org/2008/04/10/biodiesel-mythbuster-20-twenty-two-biodiesel-myths-dispelled/#myth7 "FACT: Biodiesel contains about 8.5% less energy per gallon than petroleum diesel. For someone using B20, this means about a 1-2% loss in power, torque, and fuel efficiency. To put things into perspective, that’s about a 2 mph difference on the freeway if you were trying to go 55 mph. Millions of miles of onroad tests (aka trucking) have shown that B20 and diesel are practically indistinguishable. Biodiesel has also been used extensively in heavy-machinery, like tractors, loaders, and agricultural equipment, with no noticeable difference. B100 users may notice a slight drop in fuel mileage based on the small difference in energy content, but torque and power are usually comparable. I’ve seen a 1-3 mpg drop in fuel efficiency running B100. As an FYI, biodiesel has the highest BTU (energy) content of any alternative fuel (falling somewhere between diesel #1 and #2). Energy content of various fuels (per gallon, low value of range):" Regular Diesel Fuel = 128,500 BTUs Gasoline = 125,071 BTUs Biodiesel = 118,296 BTUs Ethanol = 76,000 BTUs In conclusion: in real world testing there is no noticeable change in power or fuel usage with fuel blends of B5 (5% bio-95% petroleum) to B20 (20% bio-80% petroleum). B100 (100% biodiesel did show a decrease in performance and fuel economy due to it's lower BTU value. The added benefit of increased fuel lubricity over the ULS fuel is a plus for the consumer in the form of possible lower maintenance/repair costs
  2. 1 point
    Mine went from .035 to .01. I was impressed.
  3. One way to tell if a t-stat is stuck open is to start the vehicle cold and let it run at idle. If the upper radiator hose at the radiator slowly warms up until it is hot the t-stat is stuck open.. With a normal operating t-stat the hose will stay cold then when the t-stat opens it is hot, no slow warm up.
  4. 1 point
    Gents, A few years ago I ... ok a really good friend of mine who is a wizard of a mechanic helped/did a lot of it... we stuffed a 4BT into a 71 Ford. We ended up doing a lot more then just the engine. Dana 44 out of a 78 F250 (disk brakes) Power steering box out of a 78 Power brakes using the chev bread van hydro boost 5 speed from a 90s ford with a mated 205. About all thats original is the body, frame, and dana 60 rear. I tried my hand at Youtube and still post videos from time to time. I think i am up to 8 videos, some of them are probably a little boring. My future plane is to actually tune the pump to decrease smoke and hopefully increase power. I am also thinking about flatbed-ing it this winter. Thought I would share.
  5. Ok so on my 99 cummins there is nothing that says what fluid should be in my p/s pump. Can't find my owners manual. So I looked on here at downloads and they don't give a fluid spec. So next thing was google. Some people are using Lucas or atf +4 or whatever. I have a bottle of plain ol valvoline p/s fluid but is that right? Thanks.
  6. Nothing but straight off the shelf power steering fluid, Stay away from atf or Hyd. oil.
  7. 0 points
    I just rebuilt a he351ve and wish I had taken pics of the center section before I cleaned it up. I got this turbo in 2016 from a diesel shop and supposedly the guy never changed his oil in 90k miles. This stuff was nasty but somehow the bearings weren’t too bad. Anyway, this is why we change oil regularly
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