Symptoms of a bad harmonic balancer?
05-18-2006, 09:38 PM
#11
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RE: Symptoms of a bad harmonic balancer?
ORIGINAL: Twisted
Your making me want to put down the ganja and drink a beer, Grim. At any rate, thanks for the info. One question: What is the purpose of clocking the driveshaft?
ORIGINAL: Grimace5.0
1. drink a beer
2. crawl under the back of the car.
3. grab the driveshaft side of the u-joint yoke with one hand, with the other hand grab the other side of the u-joint. Rock it back and forth, like giving a "indian burn" as a child. If there is slop or movement replace it.
4. crawl out from under the car.
5. drink a beer and figure out what your going to do.
Remove the driveshaft bolts and turn the driveshaft 1/4 turn on the pinion yoke.
I have no idea when the U-joints were changed. How do I check them?
2. crawl under the back of the car.
3. grab the driveshaft side of the u-joint yoke with one hand, with the other hand grab the other side of the u-joint. Rock it back and forth, like giving a "indian burn" as a child. If there is slop or movement replace it.
4. crawl out from under the car.
5. drink a beer and figure out what your going to do.
By the way, what does it mean to clock the driveshaft?
05-18-2006, 09:39 PM
#12
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Join Date: Sep 2004
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RE: Symptoms of a bad harmonic balancer?
ORIGINAL: P Zero
LOL Grim, great advice......Get drunk then go work on your car.AHHAHAHHAHHA.
Anyway, this is how you tell where your vibe is comin from. When youre going your 75mph or whenever the vibe is, if the steering wheel is shaking, its coming from the front end. Check the tires make sure theyre not seperated and that theyre not outta balance. Then check wheel bearing tightness, then check for a seized caliper, shake down the front end make sure tie-rods and tie rod ends arent loose and so on ruling everything out.
If it shakes your *** and feet, then its comin from the rear of the vehicle, it could be your drive shaft, or your back tires out of balance or even one of the axles being bent and causing a wobble effect. If you do suspect the driveshaft, take it out and have it balanced, it shouldnt be anymore than like 75 bux or so. Id recommend that for anyone with an older car.
As for the harmonic balancer, if the outer ring spun how could you ever check your timing? Isnt that where the marks are? I spun the outer ring on an old probe GT I had, it made it shake at idle, bad enough to where you could see the passenger seat vibrating. Replaced the balancer, ran great until I spun it again, stupid *** design on that car, the outer ring of the balancer drives the serp. belt. A factory replacement one should be relatively cheap. If you go the fluidamper route theyre a wee bit more, but theyre WAY better than stock.
-P.
LOL Grim, great advice......Get drunk then go work on your car.AHHAHAHHAHHA.
Anyway, this is how you tell where your vibe is comin from. When youre going your 75mph or whenever the vibe is, if the steering wheel is shaking, its coming from the front end. Check the tires make sure theyre not seperated and that theyre not outta balance. Then check wheel bearing tightness, then check for a seized caliper, shake down the front end make sure tie-rods and tie rod ends arent loose and so on ruling everything out.
If it shakes your *** and feet, then its comin from the rear of the vehicle, it could be your drive shaft, or your back tires out of balance or even one of the axles being bent and causing a wobble effect. If you do suspect the driveshaft, take it out and have it balanced, it shouldnt be anymore than like 75 bux or so. Id recommend that for anyone with an older car.
As for the harmonic balancer, if the outer ring spun how could you ever check your timing? Isnt that where the marks are? I spun the outer ring on an old probe GT I had, it made it shake at idle, bad enough to where you could see the passenger seat vibrating. Replaced the balancer, ran great until I spun it again, stupid *** design on that car, the outer ring of the balancer drives the serp. belt. A factory replacement one should be relatively cheap. If you go the fluidamper route theyre a wee bit more, but theyre WAY better than stock.
-P.
05-18-2006, 09:45 PM
#13
2nd Gear Member
Join Date: Feb 2006
Location: Miami, FL
Posts: 445
RE: Symptoms of a bad harmonic balancer?
ive been having a similar symptom, but mine is around 50 mph. as soon as i switch to 5th gear around 50 mph, the shifter vibrates pretty insane, but once im passed 60 mph, it doesn't vibrate nearly as violent, it almost goes back to normal
05-18-2006, 10:06 PM
#14
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Join Date: Jun 2004
Location:
Posts: 937
RE: Symptoms of a bad harmonic balancer?
I was thinking about trying this balancer. Looks better than stock and close to the price of stock to.
You might want to try this one if you are going to buy a new one.
http://www.latemodelrestoration.com/...0%201&comp=LRS
You might want to try this one if you are going to buy a new one.
http://www.latemodelrestoration.com/...0%201&comp=LRS
05-19-2006, 04:15 AM
#16
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Join Date: Feb 2006
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Posts: 3,768
RE: Symptoms of a bad harmonic balancer?
Thanks for the replies folks. I guess I'll just change it then. By the way Grim, I don't drink much anymore, and two beers will give me a good buzz. I don't make pie though.
05-19-2006, 04:18 AM
#17
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Join Date: Feb 2006
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Posts: 3,768
RE: Symptoms of a bad harmonic balancer?
ORIGINAL: XPBaller
Well im in the same boat as you. At 1k rpm it gets a bad shake in the wheel and shifter, after 1k it goes away, then it makes a hard return at 4500+. I bought a new HB, ill let you know if it works out.
Well im in the same boat as you. At 1k rpm it gets a bad shake in the wheel and shifter, after 1k it goes away, then it makes a hard return at 4500+. I bought a new HB, ill let you know if it works out.
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