What does it feel like when you have the wrong balancer on the motor? I have a "high frequency" vibration that gets worse as the RPMs climb. It does driving down the road or sitting in neutral in the driveway, so I figure it has to be the motor. The shifter knob (4 speed) and steering wheel are the best places to feel it. This is not a new vibration, it has been there since I put the motor in the car. It did seem to get better when I replaced the C4 with the toploader though.
You describe an engine imbalance IMO. You balancer could be wrong weight or it could have slipped the weight. When mine slipped the weight though, it would change vibration intensity continuously. The weight would slip around and change the balance, so the vibration would change as you drove. So it does sound reasonable that you have an imbalance, instead of a bad balancer.
What do you mean "high frequency"? Like a wiwiwiwi as opposed to a woaow-woaow-woaow? I ask this in all seriousness, and am doing my best to SPELL a sound...
High frequency meaning that the shifter knob is moving back and forth about a 1/16 of an inch a hundred times a second verses it moving an inch back and forth 10 times a second. It feels like holding a weed eater.
So the only way I would go about fixing it would be to tear the motor down and have it balanced at a machine shop? What would be the damage to keep driving it the way it is until I get the money to balance the motor?
I think he is saying that the balancer needs to be changed, not that the engine is out of balance itself. A mismatch between balancer and engine imbalance, or a faulty balancer. So, when you are driving, can you hear a tone? Mine used to sound like a rotary prop driven airplane, with a "waARuh-waARuh-waARuh" sound going up and down about twice a second. Kinda like a harmonic heard when tuning guitar strings. Or is yours just a feeling, without a hum?
Hmmm...on re-reading this post, he does make it sound like an internal engine issue, and not a balancer issue.
There is no sound with the vibration, what you are describing is more of a rhythmic vibration. From my understanding those are usually caused by something in the drivetrain.
I meant the balancer may well be the wrong part. Otherwise it could be faulty... Worst case scenario is an internal imbalance I would think..
Not sure what engine you are running... I got a Professional Products balancer. Very good price, and pretty high quality. Not a shoddy rebuild like you get from the parts houses. Yes, I found where it was rubbing AFTER the fact, and fixed that before it took anymore paint off... (it was a casting bump on the water pump...)
If it's out of balance, you will for sure feel it. My son put a 28oz flexplate on a 50oz engine, it felt just like what you are talking about. It ran, but had a constant vibration, much like holding a weedeater. You say it got better when you put in the four speed? That sounds like both the balancer and flywheel were wrong. Put the same weight balancer on as the current flywheel and I bet it will be right.....
Not to muck up the workes but: Is the trans good? It could have a bent input shaft.Not likely unless that trans was hammerd on in what ever it was in before you got it.Does the vibe change/stop if you push the ctutch in?
A friend of mine has a balancer I am going to try to see if it works. I put a new input shaft in the trans when I rebuilt it (output shaft as well). I rev'ed the motor to about 5000 in neutral and pushed the clutch in and noted no change in the vibration.
I just bought/installed the same balancer on my Mav. Looks and feels pretty high quality, definitely better than my beat down old factory one. I switched to a late model flywheel, so I had to change over to a 50oz imbalance.
