The Ford Barn

oldspert · 10-22-2023, 10:01 AM

I have decided to pull my engine and check out why it vibrates so bad. It is so bad I can't drive over 40 mph without it making the entire car rattle. I still have the oil leak so I can address that too. I had a 29 when I was in high school in 1960 and drove 8 miles to school every day at 55 or so mph and it did not vibrate at all. I'm thinking it might be in clutch or flywheel area since I have to push the clutch hard all the way to the floor to shift without grinding gears.

Ramman · 10-22-2023, 10:46 AM

Has the car done this ever since you've owned it?

Rob Doe · 10-22-2023, 02:31 PM

40 mph was where the heavy vibration began on our coupe. It was still there after replacing spindle bolts, bearings and bushings.

How old are your tires? Have you checked the wheel and tire run outs? Our tires were 15 year old Firestones. A new set of American Classic radials and tire beads cured the issue.

oldspert · 10-22-2023, 06:02 PM

Brand new tires. Has done this ever since I bought it last October. It is not in the suspension, strictly rpm related. Does the vibration while sitting and reving the engine.

Pete · 10-22-2023, 07:34 PM

The clutch should push easily no matter what type it is.
The vibration problem is likely related to the clutch/flywheel/crank assembly/oil leak.

Richard Knight · 10-22-2023, 09:27 PM

Sponsored Links (Register now to hide all advertisements)

If it were me I would completely disassemble the engine . I would send out for balancing. The crank, flywheel, pressure plate, disc, pulley, fan, rods, pistons. If you don't you are just guessing.

nkaminar · 10-23-2023, 05:17 AM

I will second what Richard said. Also check for a cracked clutch pedal lever where the pin goes through. That was a design flaw.

Richard in Anaheim CA · 10-23-2023, 11:32 PM

Before tearing into the engine, I would make sure the front motor mount is installed correctly and the nut on the bottom tightened only enough to insert cotter pin. The front of the engine should move freely.

install new rear motor mount rubber correctly. Mount to engine bolted tight and the plate and rubber attached with through sleeves and bolts finger tight plus 1 turn. Install the cotter pins.

Richard
Anaheim CA

brokenspoke · 10-24-2023, 05:32 AM

Bingo on above

nkaminar · 10-24-2023, 06:49 AM

Richard has some good points (post #8). All of the old rubber in the rear mounts is hard as shoe leather. Since you have decided to pull the engine, that would be a good time to replace the rubber and check the front engine mount. The original front engine mount, with the springs, works the best. Don't use the replacement ones with the rubber parts. If you have the Float-A-Motor mounts at the rear, do not tighten the bolts that go through the rubber pads. Just snug them up, maybe a couple turns after they bottom.

A counterbalanced crankshaft will help with the vibrations.

Big hammer · 10-24-2023, 07:39 AM

After I replaced the radiator fan with a new aluminum balanced fan some of my vibrations went away!

10-22-2023, 10:01 AM	#1
oldspert Senior Member Join Date: Aug 2012 Location: Texas Posts: 227	engine vibration I have decided to pull my engine and check out why it vibrates so bad. It is so bad I can't drive over 40 mph without it making the entire car rattle. I still have the oil leak so I can address that too. I had a 29 when I was in high school in 1960 and drove 8 miles to school every day at 55 or so mph and it did not vibrate at all. I'm thinking it might be in clutch or flywheel area since I have to push the clutch hard all the way to the floor to shift without grinding gears.

10-22-2023, 10:46 AM	#2
Ramman Member Join Date: Oct 2022 Location: Findlay, Ohio Posts: 95	Re: engine vibration Has the car done this ever since you've owned it?

10-22-2023, 02:31 PM	#3
Rob Doe Senior Member Join Date: Apr 2021 Location: Central Illinois Posts: 494	Re: engine vibration 40 mph was where the heavy vibration began on our coupe. It was still there after replacing spindle bolts, bearings and bushings. How old are your tires? Have you checked the wheel and tire run outs? Our tires were 15 year old Firestones. A new set of American Classic radials and tire beads cured the issue. __________________ "It ain't what you know for certain that gets ya in trouble. It's what ya know for certain that just ain't so!"

10-22-2023, 06:02 PM	#4
oldspert Senior Member Join Date: Aug 2012 Location: Texas Posts: 227	Re: engine vibration Brand new tires. Has done this ever since I bought it last October. It is not in the suspension, strictly rpm related. Does the vibration while sitting and reving the engine.

10-22-2023, 07:34 PM	#5
Pete Senior Member Join Date: May 2010 Location: Wa. Posts: 5,409	Re: engine vibration The clutch should push easily no matter what type it is. The vibration problem is likely related to the clutch/flywheel/crank assembly/oil leak.

10-22-2023, 09:27 PM	#6
Richard Knight Senior Member Join Date: Mar 2021 Posts: 130	Re: engine vibration Sponsored Links (Register now to hide all advertisements) If it were me I would completely disassemble the engine . I would send out for balancing. The crank, flywheel, pressure plate, disc, pulley, fan, rods, pistons. If you don't you are just guessing.

10-23-2023, 05:17 AM	#7
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 3,900	Re: engine vibration I will second what Richard said. Also check for a cracked clutch pedal lever where the pin goes through. That was a design flaw. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.

10-23-2023, 11:32 PM	#8
Richard in Anaheim CA Senior Member Join Date: May 2010 Location: Anaheim California Posts: 551	Re: engine vibration Before tearing into the engine, I would make sure the front motor mount is installed correctly and the nut on the bottom tightened only enough to insert cotter pin. The front of the engine should move freely. install new rear motor mount rubber correctly. Mount to engine bolted tight and the plate and rubber attached with through sleeves and bolts finger tight plus 1 turn. Install the cotter pins. Richard Anaheim CA

10-24-2023, 05:32 AM	#9
brokenspoke Senior Member Join Date: May 2010 Location: Anderson, Texas Posts: 275	Re: engine vibration Bingo on above Last edited by brokenspoke; 10-24-2023 at 05:33 AM. Reason: addition

10-24-2023, 06:49 AM	#10
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 3,900	Re: engine vibration Richard has some good points (post #8). All of the old rubber in the rear mounts is hard as shoe leather. Since you have decided to pull the engine, that would be a good time to replace the rubber and check the front engine mount. The original front engine mount, with the springs, works the best. Don't use the replacement ones with the rubber parts. If you have the Float-A-Motor mounts at the rear, do not tighten the bolts that go through the rubber pads. Just snug them up, maybe a couple turns after they bottom. A counterbalanced crankshaft will help with the vibrations. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.

10-24-2023, 07:39 AM	#11
Big hammer Senior Member Join Date: Jun 2014 Location: Land of Lincoln Posts: 3,131	Re: engine vibration After I replaced the radiator fan with a new aluminum balanced fan some of my vibrations went away! __________________ Don't force it with a little hammer tap, tap, tap get a bigger hammer tap done