Vibrating Engine
- Thread starter FlatheadTed
- Start date
Mike V. Florida
Well-known member
Little to none
FlatheadTed
Well-known member
Thanks Mike,It seems to have more than what I would have thought ,
1931 flamingo
Well-known member
Neat fan belt. What is it? P/N? Where did you get it? Is it/or similae available in US and if so. where? Thanks in advance.
Paul in CT
Paul in CT
Chris in CT
Senior Member
Hi Ted,
Check X/Y and Z runnout on the flywheel. None should exceed 0.001 inches. Good Luck!
Check X/Y and Z runnout on the flywheel. None should exceed 0.001 inches. Good Luck!
FlatheadTed
Well-known member
Paul This belt is from here NZ
FlatheadTed
Well-known member
The belt I think was from here .I will ask the owner ,
Barry in St.Paul
Senior Member
Ted, I just finished my '30 coupe this spring, and was not happy with the vibration. Checked all the 'obvious' things (fan, muffler, motor mounts) but not that.
Ended up pulling the engine (only 200 miles on the rebuild!) and taking the crankshaft in, straightening it a bit (he said it was about 0.005" out of round at the center) then welding counterweights on it, re-balancing crank by itself, and then re-balancing it an an assembly with the flywheel and pressure-plate attached.
Lastly, I spent EXTRA time shimming and re-shimming the flywheel housing at those two 'ears' by the accelerator bracket, trying to get the lowest possible run-out there. Couldn't get it perfect, but at or below the Ford Service Bulletin specs.... After reassembly, the vibration/noise is improved. There is still vibration, it IS a four-banger, and there are two obnoxious 'nodes' at about 35 and 45mph (I have a 3.54:1 rear-end, so would be a little slower speed for original ratio gears). But when I am cruising at 50-55mph, it is smooth as silk and quiet as long as it is under a little load (flat or uphill). If I am coasting downhill a bit, it gets noisy again, though some of that is ******, and switching to slightly heavier "600W" lube (Lubriplate SPO288 instead of the standard 140W/STP blend from Brattons) seemed to quiet that mode down a little bit too. My recommendation is to have someone who has a well-restored 'A drive it with you and listen. One of the guys from our club (Dave from MN) came out to my house and helped me with that, we jacked it up and put it through the gears while jacked up, with him laying underneath and listening to ******, U-joint, etc... and trying to eliminate all the 'easy' causes of vibration before resorting to pulling the engine. Good luck!
Ended up pulling the engine (only 200 miles on the rebuild!) and taking the crankshaft in, straightening it a bit (he said it was about 0.005" out of round at the center) then welding counterweights on it, re-balancing crank by itself, and then re-balancing it an an assembly with the flywheel and pressure-plate attached.
Lastly, I spent EXTRA time shimming and re-shimming the flywheel housing at those two 'ears' by the accelerator bracket, trying to get the lowest possible run-out there. Couldn't get it perfect, but at or below the Ford Service Bulletin specs.... After reassembly, the vibration/noise is improved. There is still vibration, it IS a four-banger, and there are two obnoxious 'nodes' at about 35 and 45mph (I have a 3.54:1 rear-end, so would be a little slower speed for original ratio gears). But when I am cruising at 50-55mph, it is smooth as silk and quiet as long as it is under a little load (flat or uphill). If I am coasting downhill a bit, it gets noisy again, though some of that is ******, and switching to slightly heavier "600W" lube (Lubriplate SPO288 instead of the standard 140W/STP blend from Brattons) seemed to quiet that mode down a little bit too. My recommendation is to have someone who has a well-restored 'A drive it with you and listen. One of the guys from our club (Dave from MN) came out to my house and helped me with that, we jacked it up and put it through the gears while jacked up, with him laying underneath and listening to ******, U-joint, etc... and trying to eliminate all the 'easy' causes of vibration before resorting to pulling the engine. Good luck!
FlatheadTed
Well-known member
Thank You Barry and all contributers Ted
Tom Wesenberg
Well-known member
Ted, this isn't worth starting a new thread for, but I was just wondering if you guys have to put up with this ethanol crap in your gas in Australia?
Same question for Germany and other countries?
quickchange
Well-known member
Tom. Ted & I don,t live in Australia, We live on the big island 4hrs by plane away , In paridise, Not sure what if any ethanol might be in our fuel , I run 91 octane with a touch ,sometime straight ave gas 110 oct, depends how fast i won,t to go. Nice sunny day again ,but cool at nights, Roll on Vancover,