Pickups Powered By Tractor Engines Get 50 Mpg

Pickups Powered By Tractor Engines Get 50 Mpg ENGINES More than a few FARM SHOW readers have installed a car or truck motor in a tractor Gary Brown of Byron Georgia and a group of friends are going the other way putting tractor diesels in cars and small trucks The group which calls itself Shade Tree Conversions claims to have tripled the mileage in vehicles they’ve converted “The first one we did cost us about $18 000 and took four months to do ” says Brown “The last one runs smoother gets better mileage took about seven days to do and cost about $6 000 ” He says the difference was a combination of experience and finding new shortcuts Perhaps equally important was knowing what they needed for parts and where to get them In the book the group has published they provide a complete list of sources “We found an outfit in Florida that sells transmissions and will custom build gears for half the price of our original source ” says Brown “We also found sources for motors and bell housings ” Because all six of the group’s members are part time farmers and small business owners the work has been done evenings and weekends Since they first decided to chip in on some vehicles Brown says they have spent more than $100 000 on the project However they also have three vehicles to use or sell “Our first project was to convert a Ford F-150 to diesel using an engine from a Ford 4600 series tractor ” recalls Brown “The engine is rugged and heavy duty Because it was rated at only 55 hp we added a small Vortec super charger that was originally designed for a four-cylinder Honda ” They rebuilt the engine had the injectors and pump rebuilt by experts and built new mounts to handle the engine which was heavier than the original 302 V-8 They also had to box the brace that runs underneath to get the engine down low enough “We selected a Tremec T-5 five-speed overdrive transmission and found a bell housing from a straw blower machine ” says Brown “We replaced the clutch with an 11-in automotive type for a 3/4-ton Ford truck After buying a clutch pressure plate and throw-out bearing we discovered the throw-out was too long and had it machined to the proper length ” They resurfaced the flywheel and drilled new holes for the automotive pressure plate to fit the heavy-duty tractor flywheel When they tried to mount the transmission they discovered a 1/4-in gap took the measurements to a machine shop and had a ring machined to fit the space “When you encounter something that doesn’t fit you just have to stop and figure out what to do ” says Brown “With six people on our crew we could usually figure something out or get the advice we needed ” For example when they mounted the transmission they realized the mount bracket was off a few inches and made an adapter out of a piece of 1/2-in steel Once it was bolted between the transmission and the mount they discovered the shifter didn’t line up with the hole in the floorboard “We talked to a friend who was a transmission expert and he just laughed and told us to cut a new hole and seal up the old one ” relates Brown “We told him that then the shifter would be too close to the seat to shift into second and fourth He laughed again and said ‘Just mount the shifter backward’ ” With the transmission and engine mounted the driveshaft had to be shortened about 6 in They used the power steering pump that came with the engine but adapted the pickup’s alternator to the new engine “We replaced shocks and wheel bearings and serviced the rear end replacing the lube with synthetic for less friction and improved economy ” says Brown He stresses that when seeking fuel economy little things like the right lube and tires make a big difference Other changes needed included adding a vacuum pump for the booster on the power brakes as well as the heat and air controller The throttle cable had to be moved as well Other basic modifications included replacing cables and connecting hoses where needed and adding a larger battery to turn over the diesel “We used a 12-volt radiator fan wired to a thermostat ” says Brown “It only runs when the engine needs it but it will operate even after the engine shuts down ” They also removed the larger of the two fuel tanks and installed a 12-volt fuel pump The exhaust system had to be reworked to accommodate the supercharger A friend cut out a flange and one of the group hand-built exhaust tubes welding them to the flange “You need to be sure that all the tubes are about the same length ” says Brown “If one is radically longer it can throw the engine out of balance ” The clutch linkage also had to be replaced as the pickup had one type of linkage and the bell housing had another The group rebuilt and adapted what they needed though Brown acknowledges there’s an easier way “A dual cylinder hydraulic clutch system could be used in place of the linkage but we like to suffer and do things the hard way ” Once the work was finished the group took the truck for a test drive “The three-cylinder had plenty of torque but the overdrive gear was too high ” recalls Brown “We ordered a gear kit and dropped the gear ratio ” With the original engine and transmission the pickup got just 13 miles per gallon says Brown The converted truck gets triple the mileage at about 40 mpg They’ve done a number of other conversions since then reaching up to 50 mpg “We believe the best formula is a 4-cylinder with a turbo and a five-speed overdrive ” says Brown “We have a small Ford car that gets up to 50 mpg and pickups that get 40 to 50 mpg and can reach speeds of 100 mph ” A book called “Shade Tree Conversions” is available direct from Brown or at Amazon com for $24 95 Included are do-it-yourself details along with names and addresses of sources for engines transmissions and other components Also included are multiple high quality photos that cover key steps Brown is also author of the Patriots’ Energy Bill Call him for details Contact: FARM SHOW Followup Gary C Brown 2191 Hwy 247C Byron Georgia 31008 ph 478 954-1283 or 800 998-7467; www shadetreeconversions com

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