wvopowered

I have a 97 180 HP motor in my Ford with the ZF5 trans and have a lot of gear rollover noise at idle.It will go away above 1k rpm so I have been thinking about setting idle up.The original clutch for this trans was a dual mass for this reason. I had changed out the origanal clutch with a solid mass with the 7.3 and also had this noise but not as load as it is with the 5.9 more harmonics due to two less cly. Is any one running one of these and if so the fluid type or the stock type.

Dinner

Viscous style Balancers are a good choice for any engine, in my mind really. They dampen better than Elastic types and don't really run the risk off coming out of time compared to the Elastic ones. Anything to help improve the balance of the crank is a positive.

Also, if the stock one is old there is the chance it is out of time. Oil, oil vapour and running high RPM's can cause them to fail. The oil will cause the rubber to slowly start to bunch up. Once this goes on for long enough the outer ring can not rebound/dampen properly and you will get vibrations. They can also actually spin on their inner piece and that rubber, causing them to go out of time with each other (the inner and outer pieces).

Once I start working on my valve train and throwing more into my rig, I will be purchasing the Viscous style.

Tate

I noticed a big difference when I put a fluid damper on my truck after the dual disc clutch install. Much smoother.

Dglass89

if u spin it past 4500 yes because the stock one is supposed to "come" apart after 4500

Tate

The internet also says that the Cummins will wreck itself around 3600 rpm due to harmonics and will catastrophically fail the rotating assembly at 4100 rpm.

Dglass89

haha well i guess the internet lies haha

Dglass89

hey tate how far will you spin yours?

Tate

Mine is governed at 3750 rpm right now. I could tighten the springs to get more out of them, instead I am getting a 5k kit. I'm planning on around 4500, or wherever the power drops off first.

Brendan

So a fluid dampener is worth it? will I notice a difference in my truck? it vibrates a bit...

wvopowered

I did some searches and found some old post that say they help with vibration and clutch and trans noise.Some say they help out the 12v motors more than the 24 due to them having more vibration to start with.

rebal

in stock form or like mine mildly modded I did notice just a slight improvement in vibration

RowJ

Can't hurt.
On mildly bombed CTD's I say probably not worth the money.... especially on an automatic.
I would classify them as "fine tuning - final 5%" type bombs.

RJ

robert chilton

really quieted down my 6.7 after the dual disc install. Still loud as H#%% though.