GP Light Weight Protege pulleys

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So is 99$/109$ (to US/canada) now too low a price considering how much it's going to cost to make? That's the most recent price I recall...

I'm not sure what it will cost. It will be more. If I was to guess I would say no more than $139 for the first batch. It just depends the amount of machine time, cost of material and how much the urethane place is going to charge.
 
Since the crank pulley is going to be a urethane filled piece and NOT a solid piece of aluminum, cost will be higher. I do not know how much yet, but before I start making them I'll see what the interest is at the lowest price I can do.


I'm curious but why urethane filled? What are the benefits of this vs a solid peice?
 
Brach, aren't our engines internally balanced? I don't recall a harmonic balancer on the stock crank pulley. With an internally balanced crankshaft, the pulley and flywheel have very little to do with balancing.
 
Brach, aren't our engines internally balanced? I don't recall a harmonic balancer on the stock crank pulley. With an internally balanced crankshaft, the pulley and flywheel have very little to do with balancing.

Our motors are internally balanced. I thought the same until I was schooled by the engineer. Our motors do have a harmonic balancer. It has rubber in it. With out the rubber to absorb the resonance, our motors will beat the main bearings out. The motors life span is greatly reduced. One reason why I feel others have not built the crank pulley using urethane is cost and time.
 
Brach, aren't our engines internally balanced? I don't recall a harmonic balancer on the stock crank pulley. With an internally balanced crankshaft, the pulley and flywheel have very little to do with balancing.

I thought the same thing when I originally asked my question.


Our motors are internally balanced. I thought the same until I was schooled by the engineer. Our motors do have a harmonic balancer. It has rubber in it. With out the rubber to absorb the resonance, our motors will beat the main bearings out. The motors life span is greatly reduced. One reason why I feel others have not built the crank pulley using urethane is cost and time.

I didn't know that so I guess I learned something new about our engines today.
 
I have a question of interest... I see there is 3 of them; which one would I benefit the most on a Auto 02 P5 ? I do have a sound system running 2 Amp's for 2 12's. So I don't want the electrical to be effected...yet my 18's are heavy @ start so I need that low end push. Looking in to getting a header too.

Let me know, txs
 
Our motors are internally balanced. I thought the same until I was schooled by the engineer. Our motors do have a harmonic balancer. It has rubber in it. With out the rubber to absorb the resonance, our motors will beat the main bearings out. The motors life span is greatly reduced. One reason why I feel others have not built the crank pulley using urethane is cost and time.

Ok so there is a stock rubber damper. Any chance it can be made out of steel (like SFI spec) rather than urethane then?

Edit: The entire centre piece is not going to be all urethane is it? This is what I meant by my above question. So is it only the insert between the inner and outer disc that will be urethane?
 
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^^^........Wouldn't that take away the point of having anything in there at all? The reason it is being urethane is because(I think) it can absorb smaller vibrations better than metal can, that's why a lot of cars have the center piece made out of rubber. The softer the material the better so it absorbs that shock from the crank shaft turning. (These are just my speculations.)
 
^^^........Wouldn't that take away the point of having anything in there at all? The reason it is being urethane is because(I think) it can absorb smaller vibrations better than metal can, that's why a lot of cars have the center piece made out of rubber. The softer the material the better so it absorbs that shock from the crank shaft turning. (These are just my speculations.)

Depends on the durometer & shore of the urethane.
Now that it's been brought up, I'm sure Brach will post the specs once it's setup.
 
Dubby wtf? Lol. That was teh lamers.

Depends on the durometer & shore of the urethane.
Now that it's been brought up, I'm sure Brach will post the specs once it's setup.

I'm sure he will. And yeah checking up those words right now, lol.
 
Ok so there is a stock rubber damper. Any chance it can be made out of steel (like SFI spec) rather than urethane then?

Edit: The entire centre piece is not going to be all urethane is it? This is what I meant by my above question. So is it only the insert between the inner and outer disc that will be urethane?


SFI spec balancers have urethane in them. It will be a small amount between the 2.
 
Oh... Brach, still haven't gotten either the ALT or WP pulleys as of today. PM sent.

I have gotten the Alt, but I am still waiting for the WP. I know it probably just went out last thursday, but last time it was pretty quick for the ALT. Anyways I put a partial deposit in your PP for that one you set aside and the rest will go in tomorrow or wednesday. Thanks.
 
So.....RR & UR UDP crank pulleys don't have rubber anywhere in them. Does anyone care to speak to that while I go read the harmonic balancer info?
 
WP pullies ARE en route, got mine today, try & be patient folks. Full post in the requested review thread.
 
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