Someone had a one piece fluid dampner they wanted to sell a while ago.

Is that still available? I have to get one.

 

I wouldn't use one of those. I've heard stories of guys breaking off crank snouts. Whay do you think happens to the fluid inside at high rpms? Get an ATI dampner.

 

I think it was craig .. what a drama I had over that thing

 

I thought this was a problem with Callies cranks on blower cars (where the crank is loaded with 50+ hp of strain).

 

I'm not sure about Craig's fittament problem but some engine builders like Sharoff won't guarantee an engine if it has a fluiddampner on it. They will with an ATI which is not much more money than the fluiddampner.

This is all stuff I've read so who knows...but if I had an engine capable of over 700hp I would but the best dampner I could. God knows the money has been spent on the rest of it.

Then again an opinion is like an a$$hole, everybody's got one.

 

Dude, that was a Powerbond balancer we had trouble with hehe

 

I have ran Fluidampr (correct spelling BTW) for years. They work in the RPM range they are desighned for better then the ATI by ATI's very own testing. Below 7,000 the Fluidampr out performs the ATI by a great deal.

The ONLY story I heard of was a guy with a Scat cast 383 crank who went out in sub freazing temps and was showing off by revving his dead cold motor. Snapped the end of the crank off. Scat blammed the Fluidampr so the story went that way.

Warren Johnson only runs ONE kind of harmonic damper...and I run the same

Good luck all!

 

Ahh

My mistake. I gather an ATI dampner is not the same as a "fluidampr"

But you are right Mike, there was a guy that snapped the snout of his Callies crank because the square angle of the dampner weakener the beveled curve of the crank.

Lets put this a different way, which one SHOULD I get?

 

Am I missing something? Isn't there a crank gear between the damper and the radius at the base the crank snout?
It is not uncommon to clearance the back of a crank gear to fit aftermarket cranks.

As for what damper, I would vote for Fluidampr.

Gerry

 

Yeah that was the problem

 

Mike (LT1Z28) was going to buy mine... if he doesn't want it I can sell it to you. I put about 3000 N/A kms on it and 2000 blower kms on it.

 

OK

Mike, up to you buddy.

:-)

 

ATI's own testing that i read shows that it compares to viscous fluid dampers at all rpms except past 5000 where it outperforms them. TRD, GM and wiston cup builders all confirm this as well. I know which one I would use but...

since you have a s/c 383 that you won't be above 6000 too often so the fluidamper will work fine. I just heard some horror stories by some knowledgeable guys but who knows what they are taching their engines to. These were stroker motors and they see more stresses at rpms with all the extra reciprocating mass.

I would see what your engine builder says and if he's happy with one kind of damper then go with it.

 

Mine is already going on the motor it was suppose to be in with a deal with the ls1 edit yet i have no idea what happened with that . We still need to get a few things lined up there Craig you still have someof my stuff and i still have some of yours we might want to clear that up one of these days.
Anyways sorry shaun but she is gone

 

I'll give you a call soon about getting our stuff sorted out. As for LS1 edit, ChriSS is giving it a good home... How much did you pay for Edit with 2 PCMs? I guess divide that by two and thats what he would owe ya...