I know that crank pulley does give a pretty good amount of gain but I remember in the past, someone told it is not a good idea to put a lightweight crank pulley on an engine that's being driven daily. It can do some serious damage to the motor. I forgot why though. Anyone here experience with crank pulley?

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the 1.6 and larger engines use a harmonic balancer type crank pulley to reduce vibrations. a lightened crank pulley does not have this feature. so in the long run you may end up damaging your engine. now a 1.5 does not use a harmonic balancer, so you could use a light crank pulley but you 1.5 pully is already light weight due to no rubber damper.

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89 crx sold.....91 hatch new project for turbo ls
<br />90 crx dx-daily beater
<br />04 suzuki gsxr750-sunny day beater
<br />83 rx7-pos sittin in the yard
01 yamaha r6 stunt bike-pos that i dont care about

I don't quite understand about this. I still don't understand how it would damage your engine. Can you explain it to me more about this? Thanks.

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http://www.hondacivicforum.com/m_114406/tm.htm

a harmonic balancer/damper dampens harmonics which cause vibrations. the 1.6 uses these as the vibrations can cause your #1 main bearing to absorb the vibrations thus causeing bearing damage.

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89 crx sold.....91 hatch new project for turbo ls
<br />90 crx dx-daily beater
<br />04 suzuki gsxr750-sunny day beater
<br />83 rx7-pos sittin in the yard
01 yamaha r6 stunt bike-pos that i dont care about

Which other Honda comes with a harmonic balancer? Do you know if the H22A engine also comes with it?

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http://www.hondacivicforum.com/m_114406/tm.htm

Most engines made have harmonic balancers.. A lot of the time the pulley and balancer can be seperated.

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