Do used crank dampeners stay balanced?

[FullNelson]

My motor had a catastrophic failture from my balancer coming loose and unbalancing the motor, an Im in need of a new one. When I was taking the motor apart it was also decided that a new clutch was needed also.

Can I spend my money on a strong new clutch and go cheap with a temporary used crank dampener? The clutch would be easier to install now while the motor and trans are apart, while the balancer would be an easier job to replace later when the motor is in the car.

How well do the balancers hold up to the test of time, in terms of staying balanced from the factory, and how well would they take to a new balancing? I would guess the rubber in it would give it a little wiggle room over time.

 

[IJ.]

The rubber bond can fail with age

 

[hvyman]

go ati. same thing can happen with a 20yr old used balencer.

 

[92nsx]

Another case of the balancer coming loose. Wow. Since the motor is out now is the time to replace it with a ATI one. Just this time get your self a good torque wrench and torque that bolt down to 195 lbs.

 

[grimreaper]

the rotating assembly *should* be balanced to what ever balancer your using.

 

[ForcedTorque]

Can I spend my money on a strong new clutch and go cheap with a temporary used crank dampener?

The rubber bond can fail with age

IJ did not say always, but there have been some threads lately, so they could be closing in on their eventual failure date. If your temporary will have a set end, I would say you may be safe in the short run.

Just a tip.....The ATI is a better dampener, adds bling, and costs less than a new Toyota part.

 

[FullNelson]

I will be getting an ATI piece soon. My reasoning is that it would be easier to replace the dampener than the clutch. At the same time I wouldnt want to risk a new motor on the chance that the same event would occur that caused the motor to fail in the first place.

If I went the way of a temporary used and rebalanced dampener, I wouldnt expect it to be on there more than the lifespan on the break in period of 1500 miles, if not less.

 

[Poodles]

the rotating assembly *should* be balanced to what ever balancer your using.

Rotating assembly should be zero balanced without the dampener and flywheel/clutch.

If you do get the entire thing balanced, if you ever change the clutch, the balance is GONE.

 

[ForcedTorque]

One thing missing here is any info on the crank. If your dampener came loose, there is bound to be some damage. Has that been addressed, and how?

 

[FullNelson]

Brank new crank. Engine was machined and balanced. With the motor balanced without the clutch and the dampener, how much can the clutch and dampener be off of a zero balance? Could they be off balanced enough to do harm to the motor, or would it be beneficial to get either dynamically balanced on their own?

 

[Poodles]

flywheel/clutch/pressureplate and the dampener should all be zero balanced. Stock is as is the ATI unit for the dampener.

 

[grimreaper]

^ i must have missed something then, thanks for the clarification poodles.

 

[suprarich]

For a high speed spin balance you need...

Crank, damper that will be used, flexplate or flywheel that will be used, weight of pistons with rings and pins installed, weight of rods with bearings installed, flexplate or flywheel bolts.

You do not need the pressure plate and clutch in nearly all cases since they "should be" zero balance already.

 

[FullNelson]

I had the motor all balanced minus the flywheel&clutch, and the Dampener. If those three are all zero balanced It shouldnt effect the balance of the motor correct?

How close are clutches and dampeners usually balanced new oem or aftermarket?

 

[suprarich]

There are different types of balancing and for a high speed spin balance you need the flywheel and damper. Even though the flywheel is zero balance from the manufacturer, in some cases weight needs to be removed from the flywheel on one side or more to balance the entire assembly. We never remove material from a ATI damper, but it does affect the balance of the entire assembly as it rotates on the balance machine and needs to be in place.

 

[cmdeoro]

I am actually in the process of buying a flywheel and clutch so that when I do balance my motor everything is accounted for.

 

[cmdeoro]

Where can you get an ATI dampner?

 

[FullNelson]

^SupraRich is the man for that.