Fluidamper
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I had no idea what you're talking about, so I looked it up. Apparently a Fluidamper is sorta a shock absorber for the crankshaft on race engines. http://www.fluidampr.com/asktech/22.html
Alright, BTT. Let's discuss this little subject some more. I have one that I would like to install on my truck. I don't have a race truck, just one that I would like to have live forever. If this little doodad will definately help it live, then I'll use it. Thank's to all for your valuable info. Gary
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I think suns_psd is going to run one on his new "built" motor.
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I won't have any before and after results however as I've changed so much on the motor.
I honestly was completely against spending the $ on one but my undertsnding is that: the stock harmonic balancer is meant to deal w/ frequencies created by a STOCK rotating assembly in the 2200-2500 RPM range. The frequencies created on any motor that has a lightened/ heavied rotating assembly are going to be vastly different than a stock motor and therefore, the stock balancer has no chance of doing it's intended job.
The term "balancer" is confusing as the external counterweight mounted on the stock harmonic balancer is only part of it's job and having your rotating assembly balanced does not rid the engine of it's naturally occuring (possibly damaging) frequencies.
Personally for a stock motor I wouldn't bother spending the $, especially at near stock hp levels/ RPMs.
I think suns_psd is going to run one on his new "built" motor.
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I won't have any before and after results however as I've changed so much on the motor.
I honestly was completely against spending the $ on one but my undertsnding is that: the stock harmonic balancer is meant to deal w/ frequencies created by a STOCK rotating assembly in the 2200-2500 RPM range. The frequencies created on any motor that has a lightened/ heavied rotating assembly are going to be vastly different than a stock motor and therefore, the stock balancer has no chance of doing it's intended job.
The term "balancer" is confusing as the external counterweight mounted on the stock harmonic balancer is only part of it's job and having your rotating assembly balanced does not rid the engine of it's naturally occuring (possibly damaging) frequencies.
Personally for a stock motor I wouldn't bother spending the $, especially at near stock hp levels/ RPMs.
OK, I went ahead and installed it last night. I gotta admit I took a pessimistic aproach to the results. ( I was'nt expecting any improvements). I honestly have to say, that since I drive this truck everyday, know every little click, clatter, and how it pull's. I'm impressed, the truck is smoother through the RPM range, a little quieter, not a lot though. In general I think it will allow the motor to spin a little more freely, and take out a lot of crankshaft vibration. I have no firm provable data, other than seat of the pant's and what I know about my truck, but I beleive I would do it again. Any particular question's ask and I'll see if I can answer. Thank's, Gary /ubbthreads/images/graemlins/wink.gif
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Gary-
How was the install? How long?
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PITA, as I am wore out from doin 24 injector's in some 97's (lol). The new one is quite a bit heavier, but I got by without taking the shroud out. Take the old one off, slide the new one off, make sure you have someone holding the flywheel as it torques to 212 ft. lbs. God, that was a pull, but all in all worth it. Brian, my phone is acting up a bit, so I'll try you again tomorrow to get some updates from you on what we where talking about the other night. I appreciate your info. Gary, Oh yea, took about an hour to install, but I did take my time. /ubbthreads/images/graemlins/wink.gif
Gary-
How was the install? How long?
[/ QUOTE ]
PITA, as I am wore out from doin 24 injector's in some 97's (lol). The new one is quite a bit heavier, but I got by without taking the shroud out. Take the old one off, slide the new one off, make sure you have someone holding the flywheel as it torques to 212 ft. lbs. God, that was a pull, but all in all worth it. Brian, my phone is acting up a bit, so I'll try you again tomorrow to get some updates from you on what we where talking about the other night. I appreciate your info. Gary, Oh yea, took about an hour to install, but I did take my time. /ubbthreads/images/graemlins/wink.gif
I have put Fluidampers in race cars (gas of course). They made a difference in high RPMs (7K-10K). For a normal street driver with mid range RPMs they made no difference over the stock HB. In addition if you have everything balanced in the engine during rebuild they make even less of a difference. THey are difficult to install with the enigne in and require the proper pullers. It is real important not to tap them on with a hammer. Even a lead hammer can damage them.
I don't think could tell any difference in a PSD. Spending another $200 might make you feel better though.
Just my $0.02.
I don't think could tell any difference in a PSD. Spending another $200 might make you feel better though.
Just my $0.02.
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2,226 Posts
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I have put Fluidampers in race cars (gas of course). They made a difference in high RPMs (7K-10K). For a normal street driver with mid range RPMs they made no difference over the stock HB. In addition if you have everything balanced in the engine during rebuild they make even less of a difference. THey are difficult to install with the enigne in and require the proper pullers. It is real important not to tap them on with a hammer. Even a lead hammer can damage them.
I don't think could tell any difference in a PSD. Spending another $200 might make you feel better though.
Just my $0.02.
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I think you said it yourself high rpm you noticed a difference well anything over 2500rpms on the powerstroke is high rpms so with that said, since you deal with gassers mainly and have no data to give us other than speculation how do you know what it can or cannot do for the powerstroke which has a lot more vibration than a gasser does. I will never understand how people can knock a product with no test data on what they are knocking lol.
I don't even see it in your signature so do you have one on the truck listed in your signature.
I have put Fluidampers in race cars (gas of course). They made a difference in high RPMs (7K-10K). For a normal street driver with mid range RPMs they made no difference over the stock HB. In addition if you have everything balanced in the engine during rebuild they make even less of a difference. THey are difficult to install with the enigne in and require the proper pullers. It is real important not to tap them on with a hammer. Even a lead hammer can damage them.
I don't think could tell any difference in a PSD. Spending another $200 might make you feel better though.
Just my $0.02.
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I think you said it yourself high rpm you noticed a difference well anything over 2500rpms on the powerstroke is high rpms so with that said, since you deal with gassers mainly and have no data to give us other than speculation how do you know what it can or cannot do for the powerstroke which has a lot more vibration than a gasser does. I will never understand how people can knock a product with no test data on what they are knocking lol.
I don't even see it in your signature so do you have one on the truck listed in your signature.
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