Feeler Project: Light Weight Pulley for 6GC, 3S for sure, and will make for 5S, 7A & 4A if feasible Options

[vincent_doggy]

Something like this:


I will def. make some for 3S, then I can test on before I proceed for other engines

One thing, I have the following stocked pulley - 3SGE, 7AFE, 4AGE
Don't have 5SFE, dunno 5S could share the same pulley with 3S? anyone know?

This post has been edited by vincent_doggy: Oct 13, 2009 - 12:47 PM

[Cuts_the_Pilot]

Just to give people a heads up, if you look at your harmonic balancer (as they are otherwise called) they have a layer of rubber between the innerm metal part that bolts to your crank and the outer ring that the belts run on. This is there to get rid of the "harmonic resonance" in the cranks and POSSIBLY make them run smoother and less chance of things going pear shaped, especially at high rpm. Toyota put things there for a reason in my opinion.

Im not trying to diswade you from buying this dudes product, i just thought you should know the facts before you commit to anything.

There is no doubt lighter rotating mass is good though.

[IllIllIll]

Just to give people a heads up, if you look at your harmonic balancer (as they are otherwise called) they have a layer of rubber between the inner metal part that bolts to your crank and the outer ring that the belts run on. This is there to get rid of the "harmonic resonance" in the cranks and POSSIBLY make them run smoother and less chance of things going pear shaped, especially at high rpm. Toyota put things there for a reason in my opinion.

I'm not trying to dissuade you from buying this dudes product, i just thought you should know the facts before you commit to anything.

There is no doubt lighter rotating mass is good though.

I was under the impression that the rubber piece in the harmonic balancer acted kind of like Dynamat as it helps absorb or dampen vibrations from the engine. Isn't that due more for reduced noise, vibration & harshness (NVH), rather than to prevent things from going pear or egg shaped. It's definitely their for a reason, no doubt. Who here runs a lightened pulley? Does it vibrate more at a certain RPM than before?