Nickname: the bear

Review: 7 - 10 hp/ 7 -12 ft/lb's torque on what? If you think that you can get these kind of results on a small 4 cycle you are quite mistaken. For these kinds of gains the engine must already be making several hundred horsepower with cast iron pullies. First of all, the reason changing pullies will give a performance boost is because they drive the accesories less, i.e. less work the engine must do. Reduced rotating mass helps as well, but primarily it is the reduction in work.

Date reviewed: Mar 13, 2006 4:58 PM

Nickname: bogus_ek

Review: On a Honda or a typical sport compact, you're not going to see 6-10 horses. It improves efficiency freeing up horsepower. It doesn't make horsepower. In a high revving Honda 4 banger, OEM pulleys come with dampners in them that are taken into account when a rotating assembly is balanced. Taking this off can be fatal to an engine. In Honda's for example, the OE CTR pulley without the dampner has been fatal in many instances. It throws off the balance of the rotating assembly and eliminates harmonic dampning necessary to the engine at high rpm. When you're revving at 8K + rpms, that's not a good thing. There are other ways to achieve the same effect w/out switching to a different crank pulley. A light weight flywheel is probably the best alternative. If you must switch out your pulley for "bling factor", I would recommend the Fluidampner's Hamonic balancer. It's the only aftermarket, light weight crank pulley with a built in harmonic dampner.

Date reviewed: Mar 9, 2006 7:24 PM

Nickname: master machanic

Review: Iddling in traffic with undersized pulleys and not having electric fans is a no no.

Date reviewed: Mar 9, 2006 4:29 AM

Nickname: cliff

Review: Light weight pulleys sound like good stuff, but don't some manufacturers include dynamic balancing features on the pulley.

Date reviewed: Mar 9, 2006 4:05 AM