Pulleys

[p5sucka]

Who knows about uder drive pulleys. Is it worth it, I heard they add about 12hp. Everyone knows p5s need that 12hp. I've seen some for a couple hundred bucks but if its garbage forget about it. Let me know.(drinks)

 

[viVid]

I have an UO Pulley, but to tell you the truth, I don't know if it was worth it because I did some other mods at the same time... I seriously doubt 12 hp, maybe 2-3.

Who knows about uder drive pulleys. Is it worth it, I heard they add about 12hp. Everyone knows p5s need that 12hp. I've seen some for a couple hundred bucks but if its garbage forget about it. Let me know.(drinks)

 

[p5sundevil]

well the thing is pulleys are NOt SUpposed to Make horsepower, they are supposed to remove rotational mass from the stock pulleys you are replacing and therefor reduce the amount of power loss from the engine to the wheels, so the seen gains are freed up power that was already there, not making more power like you would with a header or turbo or something.

Same thing with flywheels, they are lightened wheels, that does not physically make more power in your engine but reduces the parasitic(spelling?)loss through the drive train that your car normally has. Basically saying a car with 100whp probably has more coming out of the engine but it is loss through the friction and movement of parts in the drive train, removing weight and size of these parts can also reduce the power they rob from the wheels.

Anyway, I think pulleys are good ideas if, like anything else, you do it properly and either get new belts or have yours tighted when installing and keep an eye on things, biggest problem with pulleys is belt slippage.

 

[viVid]

This is true... which is why you will notice that the engine seems more responsive more than anything. On turbo cars it helps spool up the turbo faster (at least that is what I read somewhere). New belts are a must...

well the thing is pulleys are NOt SUpposed to Make horsepower, they are supposed to remove rotational mass from the stock pulleys you are replacing and therefor reduce the amount of power loss from the engine to the wheels, so the seen gains are freed up power that was already there, not making more power like you would with a header or turbo or something.

Same thing with flywheels, they are lightened wheels, that does not physically make more power in your engine but reduces the parasitic(spelling?)loss through the drive train that your car normally has. Basically saying a car with 100whp probably has more coming out of the engine but it is loss through the friction and movement of parts in the drive train, removing weight and size of these parts can also reduce the power they rob from the wheels.

Anyway, I think pulleys are good ideas if, like anything else, you do it properly and either get new belts or have yours tighted when installing and keep an eye on things, biggest problem with pulleys is belt slippage.

 

[DiS]

Pulley is a good idea I would say. 3 or 4 days ago. I can definetly say that there is no more bogging when accelerating in 2nd gear. Spools up MUCH MUCH quicker. If you are thinking of getting one, get urself unorthodox underdrive pulley. Ya its expensive but for what it does its worth it. Also get urself a pair of new belts made by Gates company. Do a search on this forum and u will find the part numbers of those belts. I already dont remember them, hehe.

 

[mazda2002]

Would a lighten flywheel do the same thing. It reduces more weight on a bigger radius, doesn't it? So, would a ud pulley and a lighten flywheel reduce too much weight and create a lack of inertia in the engine. I heard of other people having problems with lighten flywheels, so how would you do the math of what is too much?(huh)