Hi all. As I continue my work on the 1951 Fork Funk (6 cylinder) I have a couple of questions for those more familiar with these.
I have given it a complete tuneup, with new plugs, plug wires, coil, cap, rotor, condenser, the works. Also had the carb rebuilt by a
local carb shop. Fresh gas, basically the works. It's also a 12 volt conversion. Starts immediately, idles like a sewing machine.
Problem comes about when I start in get into the higher RPM's. It starts balking, sputtering, and acting like it's missing. Ruled out
lack of gas, getting plenty. All the ignition stuff has been replaced, except the distributor, but didn't see anything wrong with it.
Tight bearings, etc. Two things; one, the guy who did the original restoration did NOT put a muffler on it, just straight pipe. Noisy as
all get out, thinking of a "glass pack" which seems to be the norm. Also, ran it for a half hour today, up and down the road. Ran, but a
bit balky. Can't make full RPM, 2100 is it. Second thing I noticed, after pulling back into the shop, the carburetor body was "ice cold"
all the way up and down. Like too much cold air going through it? Outside air temp was in the 50's. Low humidity, under 40%.
Also noticed condensation from the crankcase vent forming on the starter motor which is right below the vent. I haven't checked yet, but I
am suspicious that the previous owner may have removed the thermostat?? Can't get engine temp much above 140 degrees.
Trying to figure out why the darn thing just doesn't want to run well at the higher RPM's. Do any of these items give anyone a clue?
I've worked on old engines before, but this one has me baffled. I should also mention that I did a cold compression check on all
cylinders. Every one (all six) came in at 110 to 120 PSI.
Ideas???
I have given it a complete tuneup, with new plugs, plug wires, coil, cap, rotor, condenser, the works. Also had the carb rebuilt by a
local carb shop. Fresh gas, basically the works. It's also a 12 volt conversion. Starts immediately, idles like a sewing machine.
Problem comes about when I start in get into the higher RPM's. It starts balking, sputtering, and acting like it's missing. Ruled out
lack of gas, getting plenty. All the ignition stuff has been replaced, except the distributor, but didn't see anything wrong with it.
Tight bearings, etc. Two things; one, the guy who did the original restoration did NOT put a muffler on it, just straight pipe. Noisy as
all get out, thinking of a "glass pack" which seems to be the norm. Also, ran it for a half hour today, up and down the road. Ran, but a
bit balky. Can't make full RPM, 2100 is it. Second thing I noticed, after pulling back into the shop, the carburetor body was "ice cold"
all the way up and down. Like too much cold air going through it? Outside air temp was in the 50's. Low humidity, under 40%.
Also noticed condensation from the crankcase vent forming on the starter motor which is right below the vent. I haven't checked yet, but I
am suspicious that the previous owner may have removed the thermostat?? Can't get engine temp much above 140 degrees.
Trying to figure out why the darn thing just doesn't want to run well at the higher RPM's. Do any of these items give anyone a clue?
I've worked on old engines before, but this one has me baffled. I should also mention that I did a cold compression check on all
cylinders. Every one (all six) came in at 110 to 120 PSI.
Ideas???