While attempting to tighten the harmonic balancer I broke one of the teeth. What will this cause?

Will I have to replace the harmonic balancer ?

$#!t

 

Do you mean one of the teeth on the timing ring? If so, that is not good. I would not expect the engine to run. The timing ring has one open tooth location which the ECM uses to sense crankshaft position, and with another tooth gone I would expect all sorts of ugly behavior. I doubt if the engine would fire at all.

You don't need a new harmonic balancer, just a timing ring (EBC9853) which is bolted to the back of the balancer. I don't know if they are any easier to find than a whole balancer unit, but I hope so.

 

Yeah it did not run. But I used epoxy to glue the tooth back on. Waited about half an hour and cranked. She started after a bit of gas. A bit rough though.

But thank you sleekjag12 for your advice. That's not too bad, found a couple already online for $40 USD, worst case scenario.

I wonder if using epoxy will work.

 

That was a good idea to glue it back on. But epoxy doesn't seem like it would hold up for long with the intense heat and centrifugal force there, unless it is rated for that environment. I wonder if a metal weld like JB would be better. Glad to hear you can get a timing ring if you need it. The balancers are definitely scarce.

 

There is one on a salvage X300 normally aspirated here in south Kansas City . The engine was overheated and would be a candidate for someone who need a whole balancer unit to be used as is or overhauled as a core . You can call them and see if you can remove just the gear from the balancer as just the balancer is marketable

..Avenue Auto Wrecking

 

Hello all,

So far I have been able to drive the car fine, at most 20 mins or so of driving. At idle however the car is ROUGH. The only thing that I can think of would be the timing since I have not messed with any other components in the car. Any idea what it could be? Is the pulley not all the way in (bolt is on pretty tight and belts are aligned)? Could it be that some epoxy that escaped the sides is messing with the CPS? Im not sure how sensitive these things are.

Again I appreciate the help! If its doable Lady P I will call Avenue Wrecking and see if they can ship this to me.

 

Were you tightening the harmonic balancer bolt by bracing a pry bar against the timing disc? This is a good lesson for us. According to the service manual, the balancer should be tightened by bracing a pry bar through the hole under the transmission bell housing, against the teeth of the flywheel. That will hold the crankshaft from turning while you tighten the bolt. Apparently the flywheel teeth, and the crankshaft itself can withstand the tightening torque with this method. Torque is 180-220 Newton-metres.

I suppose the starter bump method to loosen the bolt is actually a similar force (in reverse) on the flywheel and crankshaft, but the balancer does not need to be braced.

Don't brace against the CKPS bracket either, it is not nearly strong enough. That was a good lesson for me.

 

see page 41 :

 

Yes indeed I used the teeth on the timing ring -_- I definitely learned my lesson.
as mentioned car runs fine excluding the rough idle. I will go over the teeth with a metal file where the epoxy ran through the sides. I don't know if that would cause it to have a rough idle but worth doing anyways.

If possible, can someone please take a picture of their CPS relative to the timing disc teeth?

 

Solved the rough idle issue.

 

Good, but are you going to explain how ?

 

I cranked the engine while the tooth was missing on the timing gear, bad timing and caused the engine to blow air through the air intake. Well you know the vacuum cap on the air intake? It had blown one of them off. This allowed excess air and causing the misfire.