Balancer Recomendation
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Balancer Recomendation

  1. #1
    21' Liberator Jet NORDIC454's Avatar
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    Default Balancer Recomendation

    I am currently looking at dampers for my new mill, 12.5:1, 496", BBC, eagle forged crank, 6.385" eagle h beams, EXT bal, studed 4 bolt mains. Is the ATI super damper the only way to go? They are a little spendy for me right now, but I don't want to cut any corners with junk parts. Is there anything else out there I should consider? I will wait and save for the ATI if it is the only damper worthy of the job. Thanks in advance

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    The ATI is topshelf. The Romac damper is made by the same people who make Rollmaster. I have sold hundreds of these units over the last 10 or 12 years and they have performed very well and won't break the bank.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

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    21 Daytona Outlaw's Avatar
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    X 2 on the ATI, are you sure its externally balanced?
    #55

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  6. #4
    gn7
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    If you can't swing the ATI now, then get yourself a Romac. Don't fall into the trap of the of thinking any SFI cert. is ok. If the price seems to good to be true. It is. There is some seriously bad junk out there. Why do you believe you motor is EXTERNAL? Eagle 4.25 forged cranks are neutral balanced. Did you built this, buy it, or have it built? If it really is external, it isn't an Eagle FORGED crank,



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    21' Liberator Jet NORDIC454's Avatar
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    Quote Originally Posted by gn7 View Post
    If you can't swing the ATI now, then get yourself a Romac. Don't fall into the trap of the of thinking any SFI cert. is ok. If the price seems to good to be true. It is. There is some seriously bad junk out there. Why do you believe you motor is EXTERNAL? Eagle 4.25 forged cranks are neutral balanced. Did you built this, buy it, or have it built? If it really is external, it isn't an Eagle FORGED crank,

    Thanks for the input guys, this crank is OLD, my new machinist was suspect of it being ext, no center CWs. I emailed eagle with all the #s and they told me crank was at least 3 yrs old, EXT balance, 4140 forged. Not what I wanted or originally intended to run, but thats a whole 'nother story. I am having it machined and putting it together myself. This is my first stroker, and it has been a real learning experience. It has yet to hit the balance machine tho, (waiting AGAIN). I guess that will be the only way to know for sure?

    For refrence http://www.performanceboats.com//showthread.php?t=48591
    Thanks again
    Last edited by NORDIC454; 10-22-2009 at 09:57 AM. Reason: REF

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    21' Liberator Jet NORDIC454's Avatar
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    That is a discontinued 4130 crank which has not been manufactured in several years. It was rated to 1000 hp and is external balance.

    Copy and paste from email.

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    i have one of these cranks in a engine of mine i think it was called 4130 neutral balanced back then also i had it internally balanced with my rot assy and it needed a couple of slugs of Mallory to balance also i have not had any problems with the crank at all, has around five years on it.

    ati all the way, if your $$ come around, it's near winter so save up!

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    Senior Member CK7684's Avatar
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    some here will disagree, but I like my Fluidamp

  11. #9
    Some guy obnoxious001's Avatar
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    I have used a number of Pro Race balancers over the years. Not a whole bunch cheaper than ATI now though judging by the last couple that I bought. I have not experienced any problems with them that I am aware of.

  12. #10
    gn7
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    Quote Originally Posted by NORDIC454 View Post
    Thanks for the input guys, this crank is OLD, my new machinist was suspect of it being ext, no center CWs. I emailed eagle with all the #s and they told me crank was at least 3 yrs old, EXT balance, 4140 forged. Not what I wanted or originally intended to run, but thats a whole 'nother story. I am having it machined and putting it together myself. This is my first stroker, and it has been a real learning experience. It has yet to hit the balance machine tho, (waiting AGAIN). I guess that will be the only way to know for sure?

    For refrence http://www.performanceboats.com//showthread.php?t=48591
    Thanks again
    I remember the thread now. Yeah, the Pro Race is an very nice unit, but as obnoxious said, the price is getting to close to the ATI to justify it lately. For the money I would go with the Romac.



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    Senior Member hotbo's Avatar
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    what is wrong with a good brand stock style balancer????we have 2 on 496s that i have built and the mills are holding up just fine,both were balanced at my machine shop with the rotating assembly.

    i understand that a great quality product needs to be used on high hp high rpm engines but what about the run of the mill 600-700hp motors that turn aound 6000rpm??

  14. #12
    steelcomp was here
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    +1 on the Romac. Very good quality, especially for the price.
    Stock balancers are for stock engines. 600hp is hardly "stock" power level. You might get away with it...for while.
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    I have a small pile of stock and stock replacement balancers that have all shifted some. I keep the pile here purposely to show customers why it's important to spend more than $100 on a balancer.

    Street balancers work fine on engines that rarely turn more than 2500 rpm.

  16. #14
    gn7
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    Quote Originally Posted by obnoxious001 View Post
    I have a small pile of stock and stock replacement balancers that have all shifted some. I keep the pile here purposely to show customers why it's important to spend more than $100 on a balancer.

    Street balancers work fine on engines that rarely turn more than 2500 rpm.
    Shifted hell, you need some where the ring has come off and blew hole in the bottom of the boat. That will sell a couple of dampers



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