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Author Topic:   Balancer
Todd83C
Dirt Forum Racer

Total posts: 78
posted December 03, 2005 09:19 PM  
Is it worth the money to buy a 400 dollar flid type balancer? Is there anywere you can get a good one for less thene 400?
Thanks

racer17j
Dirt Forum Champ
Total posts: 5510
posted December 03, 2005 09:44 PM  
It's a proven fact a reduction in Harmful Harmonics will help your race engine live. Without going into Balancing tech, which I'm not qualified for anyway, Harmonics are created differently as rpms change. You know that little kit they sell that puts guide and spring thing on your timing chain? That tiny item reduces harmonics, check out a Buick V6 under the timing cover. If it's in your budget for a racing style balancer that reduces harmonics it's in your best interest.

brabbit75
Dirt Full Roller

Total posts: 66
posted December 03, 2005 10:33 PM  

Don't quote me on this, but awhile back, my uncle tried a fluidampr on his mod. the motor was also internally balanced, and the fluidampr is made for engines that are not internally balanced. According to the little notes next to the item description in Summit or Jegs, can't remember which. So if you plan on using a fluid balancer, either don't balance rotating assembly or get a regular balancer and balance the assembly.. Hope this helps
By the way, it didn't help his motor, it was an expensive mistake....OOPS!

lowrider
Dirt Roller

Total posts: 15
posted December 04, 2005 05:03 AM  
If your motor is internally balanced get a ATI balancer see them advertised for 250-300. dollars.

Todd83C
Dirt Forum Racer

Total posts: 78
posted December 04, 2005 05:58 AM  
Motor is internally balanced. Thanks for all the help.


Mark Wakefeld
Dirt Full Roller

Total posts: 28
posted December 04, 2005 06:01 AM  
I wouldnt run one again for free ever!!

speedway has cheaper ones.

the 400 one weighs about 17lbs, one broke the snout of a scat cast crank of mine in 14 laps.

I had a couple other motors also without problems I dont see how they maintain balance with moving stuff inside.

I also know they were built for stationary low rpm engines long before fluidampner got ahold of the idea and advertised them to death.

I think they are all a advertising gimick, and I have seen the articles on reduced harmonics in a motor by all the mags, and none showed a hp gain just reduced harmonics. Whos to say the balancer companys didnt pay to have the story done?

stockcar5
Dirt Forum Champ
Total posts: 599
posted December 04, 2005 05:14 PM  
get an ati dampner...best money you can spend if you want your motor to live. they have a lightweight version with an aluminum hub.
breaking the snounts of scat cranks is common...they are junk

------------------
www.sathoffracing.com

Raz_900
Dirt Forum Champ
Total posts: 649
posted December 04, 2005 08:21 PM  
Pioneer Performance here. They can be had for about $100 and seem to work fine for me. On the $300+ units, you're paying for the SFI safety test. Don't think many circle tracks require SFI balancers like drag tracks do.

I've also used the stock replacement Pioneer units on sub 6000 rpm motors will good results (no bearing issues). I tried a Professional Products (cheap) damper once. It lasted about 5 weeks and the outer ring seperated from the hub. Put the stock replacement Pioneer unit back on and it lasted the rest of the year.

James Ott
Dirt Maniac

Total posts: 178
posted December 22, 2005 07:55 PM  
my builder re-balances my stock one for our sreet stock motor turnin less than 6000

john56h
Dirt Full Roller

Total posts: 74
posted December 22, 2005 10:13 PM  
I seem to recall reading somewhere that a Fluid type dampener is great for street driving because the changes in RPM are gradual and there is time for the very heavy viscous fluid to reposition itself inside the inertia ring for optimum balancing, but in a racing application the RPM fluctuations are too quick and too dramatic for the fluid to effectively redistribute itself. So, you end up with the wrong ballance most of the time. At least the stock dampener can be balanced for the rotating assembly and then it just absorbs harmonics at all RPMs (although I'm sure that those too are better at absorbing harmonics at highway speeds).

jammin
Dirt Administrator

Total posts: 6259
posted December 22, 2005 10:38 PM  
Remember one thing with a fluid dampner....if for some reason you get a dent in any part of that dampner, the actually balance will be affected in the engine because the fluid is redirected around that dent in the housing causing vibrations. This is one reason some of you have heard of snouts being broken off of the crank. I suggest a dampner with no fluid.

jam

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