Group Purchase on Fluidampr Harmonic Balancers

[Jetpilot]

Performance Diesel Warehouse is pleased to offer the TDR members a special group purchase on Fluidamper Harmonic Balancers. Details of the group purchase can be found here: https://www.turbodieselregister.com/cgi-bin/classifieds2/classifieds. cgi?session_key=&search_and_display_db_button=on&db_id=14376&query=retrieval





Doug

 

[JCleary]

Awesome! I'm getting in on this deal...

 

[Nyoest]

What is the advantage over a stock damper?

 

[HEMI®Dart]

I'm in



p/n 960311

 

[JCleary]

What is the advantage over a stock damper?

It is supposed to calm the shocks delivered to the drivetrain by the motor. I believe it's also reduces the twist/flex in the crankshaft. If you have a dual disc clutch, it's supposed to make it a bit more quiet and lessen the strain on the input shaft.



I don't know if it's true, but a lot of people swear by them. For the price, it can't hurt.

 

[HEMI®Dart]

"Fluidampr controls the

harmful torsional vibrations in the crank shaft much better than the

stock rubber damper. A stock rubber damper is a tuned absorber and

works only on one order of torsional vibration while the Fluidampr will

control all three orders of vibration in the operating range. As a

results, your crank and bearings will last longer and the engine will

produce more horse power and torque. You possibly may get slightly

better fuel mileage. "

 

[DJAustin]

Anyone using these with noted results? I think I may go for one. P/N 960311

I'l be in touch with Doug- but do they come with everything needed for installation- including directions?

 

[Vaughn MacKenzie]

Jetpilot is this GP good for both 12 and 24 valve Fluidamprs?



Vaughn

 

[Jetpilot]

Jetpilot is this GP good for both 12 and 24 valve Fluidamprs?

Vaughn,



Yes this is good for the 12v, 24v, and common rail trucks!



Doug

 

[Todd T]

What is the difference between the 22. 8 and the 32 and 36 # ones available for pulling trucks? Can someone define the cutoff as to when a guy would need more weight? Is there a chart for this?



I feel this is the whole problem here and i'm glad Vibratech stepped up. I read an article years ago on the NTC's and how important it is to change the damper when just adding as little as 10-60HP. We've exceeded that amount by multiples of 100 so how much (over engineered) dampening can the stock elastomeric one can provide on a setup like ours?



It’s been dyno proven engines can make more power with the proper damper installed. In this case, heavier dampeners produce more power than a stock one. Once we add weight like a dual disc clutch and flywheel assembly to the crankshaft we've changed the resonate frequency of the crankshaft. More frequent (RPM’s) and stronger (Cylinder Pressures) power stroke events from fueling boxes and injectors have an effect on the frequency too. We have gear driven cams and injection pumps. They are the absolute best at transferring vibration. Well, changing the fueling duty cycle puts more load on and heavier valve springs combating higher boost levels change the torsional loads too. How do we measure all this?



The only difference in the 22. 8 # viscous FD and the stocker is a bit better performance over the elastomer mounted stock type. How do we measure the amount of weight needed?



For our small RPM operating range a dry/friction or pendulum type damper might be an advantage. Other than the wear associated with the friction type being a downfall, they are the most effective comparatively.



I know there are formulas to calculate a given damper mass relative to a given engine system to define a unique mass ratio for the damper. But these are above my knowledge level and best left to the experts.



I know Piers tested these things a while back, but on what level of modification to the engines? Anyone know this? Are the pulling trucks using the heavier ones and again at what level of modification?



Anyone know if the snout on a NTC270-350 is the same as ours?



Vibratech makes a 36# 12. 3" for the NTC will it fit? or even a stock NTC damper?

 

[HEMI®Dart]

Here is some new info from Fluidampr in pdf format.



http://www.fluidampr.com/downloads/diesel_fluidampr.pdf

 

[Benson]

Do these things "wear out" and start leaking? I'll bet there aren't many on the road to judge by.

 

[nickleinonen]

Do these things "wear out" and start leaking? I'll bet there aren't many on the road to judge by.

they can if they get damaged [road debris hitting it] or the plug weld where the fluid was filled cracks. . just the same as the stock one can break if the rubber bond breaks on the weight or the hub... it isn't a life long product, but it should last the life between rebuilds

 

[Jeff_K]

Well, I think I am going to try one

 

[Mcarcerano]

I see they ofer one from 92 will it work on a 91? if so I am in we use them on the race cars and they are great

 

[1dslram]

There are thousands of these on street engines. I ran one on my Street-Drag car back in the 60's. They can really help. I would get one but I just retired and at the present I am tapped out.

Bruce

 

[Benson]

Actually I meant on these trucks I'm sure there aren't that many out there.

Out of curiousity anyone know how much the OEM balancer weighs?

 

[BigBadDodge]

What is the difference between the 22. 8 and the 32 and 36 # ones available for pulling trucks? Can someone define the cutoff as to when a guy would need more weight? Is there a chart for this?



I feel this is the whole problem here and i'm glad Vibratech stepped up. I read an article years ago on the NTC's and how important it is to change the damper when just adding as little as 10-60HP. We've exceeded that amount by multiples of 100 so how much (over engineered) dampening can the stock elastomeric one can provide on a setup like ours?



It’s been dyno proven engines can make more power with the proper damper installed. In this case, heavier dampeners produce more power than a stock one. Once we add weight like a dual disc clutch and flywheel assembly to the crankshaft we've changed the resonate frequency of the crankshaft. More frequent (RPM’s) and stronger (Cylinder Pressures) power stroke events from fueling boxes and injectors have an effect on the frequency too. We have gear driven cams and injection pumps. They are the absolute best at transferring vibration. Well, changing the fueling duty cycle puts more load on and heavier valve springs combating higher boost levels change the torsional loads too. How do we measure all this?



The only difference in the 22. 8 # viscous FD and the stocker is a bit better performance over the elastomer mounted stock type. How do we measure the amount of weight needed?



For our small RPM operating range a dry/friction or pendulum type damper might be an advantage. Other than the wear associated with the friction type being a downfall, they are the most effective comparatively.



I know there are formulas to calculate a given damper mass relative to a given engine system to define a unique mass ratio for the damper. But these are above my knowledge level and best left to the experts.



I know Piers tested these things a while back, but on what level of modification to the engines? Anyone know this? Are the pulling trucks using the heavier ones and again at what level of modification?



Anyone know if the snout on a NTC270-350 is the same as ours?



Vibratech makes a 36# 12. 3" for the NTC will it fit? or even a stock NTC damper?

Can anybody answer Todds questions?



I would like one for the BBD puller wich turns just over 4500 rpm's so do I go with the:



960311 9 3/4"@24lbs



or



715285 12. 3@36lbs (I didn't see this one listed on the GP is it included ? )



BBD

 

[Jetpilot]

The larger models will fit our trucks no problem... ... According to Fluidampr there are a lot of guys using the larger dampers on their pulling trucks. For street use I would go with the standard version but for guys running extreme trucks and pulling the larger dampers would work great! And yes they are included in the GP.



Doug

 

[Mcarcerano]

I just got off the phone with fluidampr and they think it should fit the early model trucks. the one for 92 up has slots for the mag pick up and he said that he would get the one without the slots for the trucks that don't need them.