What is best crank pulley?

[Icecreamtruk]

Originally Posted by NRXRaptor

Obviously there are greater gains to be made with a lighter flywheel, but obviously the crankshaft pulley is much easier to remove in your driveway than a flywheel

Yes, but why? I dont install an aftermarket part based on how hard it is to install it, do you? You would pay money for the part, use your time and effort, risk breaking something, just to say "look at my pretty pulley"? I sure as hell wont, there are other things more important to use that money and time for.

[NRXRaptor]

Originally Posted by Icecreamtruk

Yes, but why? I dont install an aftermarket part based on how hard it is to install it, do you? You would pay money for the part, use your time and effort, risk breaking something, just to say "look at my pretty pulley"? I sure as hell wont, there are other things more important to use that money and time for.

"Yes, but why? I dont install an aftermarket part based on how hard it is to install it, do you? You would pay money for the part, use your time and effort, risk breaking something, just to say "look at my light flywheel"? I sure as hell wont, there are other things more important to use that money and time for."

Do you see how flawed your argument is? Not everyone makes decisions based upon criteria you believe to be important. At some point in our cognitive development, we realize that not everyone is thinking the same things we are and that others in fact view the world differently from us.

Based on the brief research that I've done, installing a light crankshaft pulley isn't going to do anything to a subaru engine. I came across a guy who asked his dealer, who asked subaru, and the reply was "It's fine because the crankshaft pulley does not act as a harmonic dampener," paraphrased of course. Its nice that perrin is trying to save face and justifying that their pulley is heavier (and probably more expensive) than others, but replacing the crankshaft pulley is a relatively safe, inexpensive, and easy modification to do to a subaru engine. I'm not going to pull my transmission by myself, in my driveway, without a car lift, and without knowing how to do so to make a modification you agree with

[gtengr]

Originally Posted by NRXRaptor

Based on the brief research that I've done, installing a light crankshaft pulley isn't going to do anything to a subaru engine. I came across a guy who asked his dealer, who asked subaru, and the reply was "It's fine because the crankshaft pulley does not act as a harmonic dampener," paraphrased of course.

The stock crank pulley can still be damping impulses from the accessory system to prevent them from affecting the crank. For example, the AC compressor turning on at idle is enough to rock the engine on its mounts. It makes sense to me to have accessory feedback damping regardless of whether the engine is internally balanced.

[Impureclient]

When somebody posts up a damaged engine from a lightweight pulley so we all have proof that these are bad news, I'll take mine out. Until then,
I'll keep the one in there that's been in for two years and also keep the one in my other car that's been in there for about 18 years.

[churchx]

Impureclient: from what i recall from miriad of flame threads here in past about LWCP, many had run LWCP or lightweight flywheel for big mileage without much issues, but there were cases reported by shops working on subaru boxers about bearings badly worn or damaged rather soon if both LWCP & LWFW were installed (click). So imho you should be safe enough with it, but better not add lighter flywheel to it. Boxer engines may need dampening least vs other engine layouts, but still each firing bends crank a bit torsionally, thus some dampening doesn't hurt, for all leftover vibrations to not go to crank bearings.
Imho it also may make sense using stock or fluidampr/ati alike dampened pullies on engines that will be subjected to much greater abuse, eg. doubling power with forced induction, spinning it up much higher, track use with prolonged high-rpm with sometimes oil starvation, to get all possible extra reliability in, even if slight.

[Icecreamtruk]

Originally Posted by NRXRaptor

"Yes, but why? I dont install an aftermarket part based on how hard it is to install it, do you? You would pay money for the part, use your time and effort, risk breaking something, just to say "look at my light flywheel"? I sure as hell wont, there are other things more important to use that money and time for."

Do you see how flawed your argument is? Not everyone makes decisions based upon criteria you believe to be important. At some point in our cognitive development, we realize that not everyone is thinking the same things we are and that others in fact view the world differently from us.

Based on the brief research that I've done, installing a light crankshaft pulley isn't going to do anything to a subaru engine. I came across a guy who asked his dealer, who asked subaru, and the reply was "It's fine because the crankshaft pulley does not act as a harmonic dampener," paraphrased of course. Its nice that perrin is trying to save face and justifying that their pulley is heavier (and probably more expensive) than others, but replacing the crankshaft pulley is a relatively safe, inexpensive, and easy modification to do to a subaru engine. I'm not going to pull my transmission by myself, in my driveway, without a car lift, and without knowing how to do so to make a modification you agree with

I know my opinion and way of thinking are my own. You are suggesting OP to do the lightweight pulley instead of a lightweight flywheel just because its easier. I asked you if you would, basically, would YOU swap a lightweight crank pulley in just because its easy? You could've just answered, but you chose to attack me personnaly for stating my opinion (and clearly saying so) and asking you a personal question. Sometimes I dont know man, its like people just want to bash on people for no reason.

[Bonburner]

I kind of want to get one of these for a smoother engine feel ~

http://www.ft86speedfactory.com/fluidampr-engine-damper-2009.html

Thread: http://www.ft86club.com/forums/showthread.php?p=2280212

Originally Posted by MAPerformance

Got a response back with a full dyno, as well as both waterfall plots of the torsional vibration testing, which measures the overall twist (peak-peak) resonance of the crankshaft running the Fluidampr, OEM damper, and a lightweight pulley.

The car tested was a 2013 FRS with an intake, single exhaust, and a tune done at R/T Tuning on a Mustang Dyno.

[Calum]

The only thing I felt different with a light weight crank pulley was the engine ran rougher.

Stick with stock, a light weight pulley does nothing good but look good, if you like that sort of thing.

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