Is the Harley 45 engine the same as the OHV engine?
Factory bore, stroke, pistons, and rods were the same for all years of Harley 45 motors. Note that on 1936 and earlier engines, the oil holes and key-ways on the flywheels are different than on later 45 engines. Advantages of a flathead (side-valve) engine over an OHV (overhead valve) engine were cost of manufacture and simplicity.
What kind of engine does a Harley 45 Flathead have?
In Class C rulings, flatheads are allowed to displace 750cc, while OHV motors were limited to 500cc. Harley 45 flatheads never needed lead. The reason tetraethyl lead was added to gasoline in the first place was to increase octane for vehicles with high compression. This is not an issue with old Harley flatheads.
What’s the difference between a Harley 45 and a wl?
The easiest way to tell them apart is that big-twin flatheads (UL and VL) have their drive chains on the left, and the 45 has them on the right. The WL series were manufactured from 1937 until 1952 and had a 45ci “high-compression” motor.
What was the original horsepower of a Harley Davidson motorcycle?
Horsepower was rated at 21. Original compression ratio was 4.5:1, which increased to 4.75:1 in 1941. Remember that at this time in America, there was no high-octane gasoline to allow high-compression engines to operate. During the years 1940-1945, nearly all Harley-Davidson motorcycle production was for military use.
Factory bore, stroke, pistons, and rods were the same for all years of Harley 45 motors. Note that on 1936 and earlier engines, the oil holes and key-ways on the flywheels are different than on later 45 engines. Advantages of a flathead (side-valve) engine over an OHV (overhead valve) engine were cost of manufacture and simplicity.
What’s the condition of a 1946 Harley Davidson?
Condition and Features:-Handshift/foot clutch style authentic 1946 flat head Harley Davidson-Completely and professionally restored by 45 Restorations out of Albany, NY-Clear MA title.
In Class C rulings, flatheads are allowed to displace 750cc, while OHV motors were limited to 500cc. Harley 45 flatheads never needed lead. The reason tetraethyl lead was added to gasoline in the first place was to increase octane for vehicles with high compression. This is not an issue with old Harley flatheads.
Horsepower was rated at 21. Original compression ratio was 4.5:1, which increased to 4.75:1 in 1941. Remember that at this time in America, there was no high-octane gasoline to allow high-compression engines to operate. During the years 1940-1945, nearly all Harley-Davidson motorcycle production was for military use.
How to do an IB test on a Harley Davidson?
Stator IB test or Ground Check: 1 Switch your multi-meter to Ohm x 1 scale. 2 Probe each stator wire with your positive lead on multi-meter and the negative to ground. 3 There should be no continuity to ground on either wire. 4 If there is continuity to ground, your stator is shorted to ground.
What should the resistance be on a Harley Davidson?
Resistance should be in the range of 0.1-0.5 Ohms. (Reading will vary depending on system, check service manual for specification) Switch your multi-meter to Ohm x 1 scale. Probe each stator wire with your positive lead on multi-meter and the negative to ground. There should be no continuity to ground on either wire.
What was the capacity of a Harley Davidson 45 WLA engine?
With a capacity of 45ci (740cc), the engine was standard fitment in the WLA model (along with the Canadian WLC). It featured very low 5:1 compression, allowing the engine to run on low-grade fuel. This engine was a spare that would’ve been shipped to the Army for a rapid engine change in the event of mechanical problems.
Resistance should be in the range of 0.1-0.5 Ohms. (Reading will vary depending on system, check service manual for specification) Switch your multi-meter to Ohm x 1 scale. Probe each stator wire with your positive lead on multi-meter and the negative to ground. There should be no continuity to ground on either wire.
How big are the cylinders on a Harley 45?
After the oil pumps were rebuilt and installed, cylinder assembly was next up on the Harley 45 rebuild. The cylinders and pistons were .030″ over and only needed a light honing. The cast-iron valve guides in the cylinders had been previously replaced and were in good shape.
How big are the exhaust valves on a Harley 45?
The intake valves, exhaust valves, and valve guides for Harley 45 cylinders are same from 1930 through 1973, as are the retainers, keepers, and bases. Valve size is 1.625″ on both intake and exhaust, but they are not interchangeable. Exhaust valves are different in that they are heat-treated.
What kind of piston pin does a Harley 45 use?
There are two styles of piston pins found on the Harley 45 flathead. The early-style pin used an L-clip and was seen until the mid 1950s. The later style was the more common E-clip seen from the mid 50’s until 1973. Pictured is the early style.
What kind of bike is a Harley Davidson 45?
1949 HARLEY DAVIDSON SOLO 45’ FLAT HEAD CHOPPER WITH CLEAN TITLE The ’45 Special’ is a vintage chopper that features an original uncut 1949 Harley Davidson Solo 45’ frame with 80’s chopper styling. This unique bike always attracts a lot of attention.
What does a Harley 45 Flathead motorcycle look like?
The 45 Harley flathead motor looks similar to a Big-Twin flathead. The easiest way to tell them apart is that big-twin flatheads (UL and VL) have their drive chains on the left, and the 45 has them on the right.
Where can I buy a 1950 flathead Harley?
1950 flathead 45 ci bike is brand new ground up unde 50 miles this bike was featured in easyrider Daytona 75 th bike week issue runs and rides great no disappointments $20,000 frim email or call 419 966 7078 thank you have clean Ohio title it’s ready to ride or show