Skip to main content

Site Navigation

Your Account

Choose Language

New dampener and static balancer, no difference

I have a 2001 pete 387 with a 6NZ cat. Bought at 700k inframed at 1 million. Now I have almost 1.2 million. It's kind of rattles at idle so I put a new dampener and pits power static balancer. It rattles exactly the same at idle after the new parts. Is something else wrong? I've heard callers say the difference is night and day. But not with me. I called pits power, they said check the clutch springs and motor mounts witch I did and they are both good. Anyone have any idea?

Answer this question I have this problem too

Is this a good question?

Score 2

Comments:

My mechanic has a pit so it made it easy to get under there and see. we pulled the clutch inspection plate on the bottom of the tranny and with a flashlight visually checked for broken loose or missing springs.

So the rattle or vibrations are normal according to that mechanic. I guess I was just hoping to see or feel some kind of difference with that many years and miles on my stock dampener, especially after spending the money. I guess i wont be able to pour a glass of wine on the valve cover of my running cat like they used to do in the luxury car commercials.

by

Have you tried calling them again to see what they say after telling them you checked the things they suggested you look at?

by

Add a comment

19 Answers

Most Helpful Answer

I put on one of PP damper and tried their balancer at the same time the balancer would not fit on my Series 60 Detroit. With just the damper I notice absolutely no difference in the way it ran or idled from the old one that I took off.

Was this answer helpful?

Score 3
Add a comment

I immediately noticed a small difference with their damper and balancer. The engine ran a bit more quiet and had a bit less vibration. Unfortunately i stopped noticing any difference after about the first 3 or so starts...kinda like new shocks - 100 miles down the road you forgot how the old ones rode and think the money for new ones was not well spent.

Was this answer helpful?

Score 2
Add a comment

I changed my damper at 575,000 miles on a 2004 ISX. I noticed no difference. That's a good thing, because the old one was not worn out so bad it was causing damage. Bruce took measurements from my engine and had the balancer made for the ISX. I put the balancer on at 650,000 miles and by putting my fingers on the engine before and after installation the vibration was softened. Think smooth waves instead of choppy waves.

Was this answer helpful?

Score 2
Add a comment

We put on a p.p. balancer and dampener and really couldn't tell any difference. We have 3 cummins isx. We put the parts on our oldest 1 and it is now no smoother then the newer trucks without the dampener & balancer.

Was this answer helpful?

Score 2

Comments:

The gentleman said rattles AT IDLE .... You know what we do , simply adjust the idle up a little , they will smooth out. If your truck idles at around 600 rpm then have them set it at around 700. Just test this out yourself. Sit there and with your foot on the peddle raise the idle rpm until it smooths out and see what idle speed feels smoothest and quietest.

by

Add a comment

It could be a warped crankshaft flange or the crankshaft to flywheel bolts could be lose. I had to change an engine last year because the flywheel bolts came lose and broke off in the crankshaft flange

Was this answer helpful?

Score 1
Add a comment

How did you check for broken clutch springs?

Was this answer helpful?

Score 1
Add a comment

I saw no difference, the balancer is now in the scrap bin where it belongs. I kept the damper on the engine hoping that it will last as long as the original.

Was this answer helpful?

Score 1
Add a comment

I just installed a PP dampener and Balancer on an 07 c15 accert cat with 1,070,000 miles.I have a substantial improvement , much less vibration.I did have to modify the shroud brackets,belt tensioner,and turn the front motor mount bolts around.your vibration could be caused by loose or worn centers on your clutch discs,check this by pushing your clutch in with the engine running to see if vibrations subside

Was this answer helpful?

Score 1
Add a comment

Installed Engine Damper and Balancer on my 07 ISX400 about 2months ago. I did notice less vibration during idle and turning engine off and on. it wasnt much but noticable

Was this answer helpful?

Score 1
Add a comment

I spoke to a shop that sells the same dampeners as Pittsburgh Power. They take a lot of PP balancers off as they usually find them bent up a little as they are really not designed for that kind of application. So, save your money and do not pay for a worthless balancer!

Was this answer helpful?

Score 1

Comments:

Complete BS!

by

Add a comment

So, after reading so far, on a CAT C15,

is it worth replacing the damper only if I have 750000 miles and only a little vibration?

Some people I have talked to that seem to know what they are talking about on other engine subjects seem to think it is worth the expense to avoid more serious problems in the future.

But, I am still uncertain, and I can spend a ton of money avoiding future problems that I may never know is worth it?

Is this one of them?

Was this answer helpful?

Score 1
Add a comment

In the TMC recommend practices they say change it every 500,000 miles.

Was this answer helpful?

Score 1
Add a comment

I Owned my own Shop for 28 Years Cats are Known for Breaking the Cranks after Million Miles in every one I had in my shop They Never Changed The Dampener, Had 2 Customers That Change them At 700,000 There still Running

Was this answer helpful?

Score 1
Add a comment

I am not sure what Cats your talking about but I have 3 Cat Motors 1 cat thats a 425 B model 1 3406 E Model and 6nz and they have all over 2 million miles on each one of them and have had no crank problems with any of them and they all have the original dampener. I do have a Detroit series 60 that I changed one on but made no difference

Was this answer helpful?

Score 1
Add a comment

OEM dampers are made in China or India for all the engine manfactures. When I replaced mine the only thing available was OEM from China for the ISX. Pittsburgh Power encouraged the only U.S. manfacture of dampers to build the model for the ISX. Many things from China are cheaply designed and built, and quality control is questionable. Vibratech makes the damper that Pittsburgh Power will sell for the same or lower price than the manfacture.

Was this answer helpful?

Score 1
Add a comment

so was this "rattle" there before the overhaul, after the overhaul, recently popped up? it amazes me that you had a rattle and the first course of action is to replace the damper, first lets find the source of the rattle, run the overhead, overhauled at 1 million and now 1.2 seems a bit early by some standards but anytime an engine isnt running smooth but doesnt show signs of a dead cylinder then try running or at least checking the overhead, also i would lean towards the possiblity of broken clutch springs, i know you said you checked them but you checked the angle springs that force the pressure plate, the springs to commonly break are in the plate itself, you cant see them without pulling the clutch and unless they fall out and wad up in there likely wont have much feel for the difference, as for turning up the idle, on most electronic engines built in the last 10 years or so the entire set of parameters change when throttle is pressed so the test of touching the throttle wont tell you anything, you can try bumping it a bit with cruise switches but still wont guarantee the idle set of parameters will be the same when set to that rpm. one other thing to check many people forget is the fan and accessory drives, you can get tons of vibration from these since many overhauls dont do anything with these.

Was this answer helpful?

Score 1
Add a comment

Kind of like everything else this site pushes. Like the one guy said - you should be happy it did not change as then you know the engine had been balanced damper wise all that it could. We all listen to these guys too much. I don't see them making a living with the products they push - just a good living pushing the products.

Was this answer helpful?

Score 0

Comments:

Kevin owned a fleet of trucks, so yes he was making a living with the products he promotes and has spent insane amounts of time and money researching and testing. He's owned trucks for a long time and has been using a bunch of these products on his trucks for awhile.

Bruce also knows what he's talking about when it comes to engines. He's considered an industry expert not only by Kevin but several other sources.

by

Add a comment

This crankshaft dumper idea just buzz around my ears as well. I have over a million miles on pre egr six, thinking abt replacing a dumper just as a good practice, but prefer to replace with OEM since i get mixed feedback on PP dumpers and balancers, but it it really worth it to replace the dumper even with OEM??? Someone please explain it to me as i have limited knowledge abt dumper .

Was this answer helpful?

Score 0
Add a comment

I had the same issue with my '07 Century. Mirrors vibrated very bad from the factory at idle. I even drove another Century on the lot after I got mine to try to find out if it was just my truck. It wasn't. I changed the damper an added the balancer at 500,000. I only saw a small improvement at idle and more at highway speed. I thought that was all I could do because I'd had the motor mounts and clutch (and all parts) checked numerous times to no avail. Then while chasing an oil leak that required pulling the trans I found the clutch had about 30% left on it at 614,000. So I had the flywheel resurfaced and the clutch replaced. Aaaand guess what? Mirrors are now steady at idle. So, not sure if it was the flywheel not being surfaced right from the factory, or if the clutch was messed up. Sorry to say you might have to wait until you change your clutch again to find out if there really is a problem with it. Good luck.

Was this answer helpful?

Score 0
Add a comment

Add your answer

Jeremy will be eternally grateful.
View Statistics:

Past 24 Hours: 1

Past 7 Days: 13

Past 30 Days: 86

All Time: 7,628