Which one would you go with?

The ATI seems to use O-rings that may require rebuilding after prolonged use, the fluidampr is fluid filled I believe.

http://www.atiperformanceproducts.co.../damnissan.htm

http://www.fluidampr.com/NISSAN.htm

ATI: ~$430
Fluidampr: ~$325

 

Im gonna be running an ATI this time around, we shall see how it goes...

 

They both look nice. I'm just wondered if anyone's had a definitive failure with the stock pulley? I know that people have had issues with underdrive pulleys but why bother changing from stock if it is working fine?

 

http://us.st11.yimg.com/us.st.yimg.c...1990_163910938


A little over 500whp.. ^^

 

I look at it as a "cant hurt" mod, Im not preaching it to anybody

 

Yep, it cant hurt..........

 

Also think of it like this. While the chances of a stock pulley failing arent great, these engines were designed for 300bhp. Pushing 600+whp and most cases revving above stock limits, doesnt it make sense to run a crank pulley designed for higher stress and made to tighter tolerances? We upgrade suspension, tires, cooling, and brakes for more power, why not a crank pulley? Anyways just my 2c

 

check with other about the ati. i know on my buddy's honda, the timing marks were 180 degrees off. they are both quality products tho.

 

I'm running the ATI and it's an EXTREMELY high quality piece... I'll need to ask Sharif to post up some pics - I tried talking him into stocking a bunch of these too...

 

We use the ATI on our car, but I have heard great things about the Fluidampr. I don't think you can lose either way.

 

Are not these dampers designed to reduce the vibration harmonics developed in the engine /drivetrain. The stock might be adequate for the OEM motor but adding additional power particularly Tq would both shift the fundamental frequency and the harmonics associated with it as well as the load on the bolts and attachment area. These things are designed to reduce this unwanted vibrational energy by transferring it to the fluid where it sloshes around and heat develops and transmits it to the metal and out the metal thru convection,maybe some radiation.....The bolts holding the stock would see a greater load (TQ) under F.I. Presumbly the bolts and attachment area for these dampers are beefier than stock.

 

This time around? Another blown motor?

JET

 

Assume what you want Jet, at least I can get my dipstick out

 

He found an automatic way of getting it out.

 

Who is worse off? Jet can't pull out and Alberto is constantly manhandling/abusing his own stick.

BTW, I voted for ATI.

 

Thanks for the replies guys. Unless I can figure out how/why the ATI design is superior to the Fluidampr (if it is), I'm going to go for the Fluidampr, simply b/c it's $100 cheaper, if they both accomplish the same thing.

Btw I'm not gonna be able to hang with u big dawgz , I'm only aiming for a measly 400whp on a stock block .

 

I think the ATI unit is significantly lighter than the Fluidamper. You'll have to call ATI though.

 

I think the ati weighs 6.7 lbs. and the fuidampr weighs 7.2 lbs. But I could be wrong. Others, feel free to chime in on the weight of the two units.

 

bump for updates and more info...

 

I went with the Fluidampr because it was a one piece design... and it a little less money. The ATI is a 2 piece pulley that has the potential to come apart (although unlikely) that is held on with 3 bolts.