SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: KonaGuy on June 07, 2010, 11:11:10 PM

Title: Is alt charging affected with crank underdrive pulley?
Post by: KonaGuy on June 07, 2010, 11:11:10 PM

I am gunna purchase a billet crankshaft pulley and was thinking of going underdrive, Im not sure if this will affect my charging from altenator?

Title: Re: Is alt charging affected with crank underdrive pulley?
Post by: crewchief22 on June 08, 2010, 05:48:38 AM

In an automotive application I would say yes, but in a jet boat where you spend most time above 3000 rpm you shouldn't have a problem.

Title: Re: Is alt charging affected with crank underdrive pulley?
Post by: walshmotorsports on June 10, 2010, 11:00:53 AM

  I use one myself, works fine. :thumbup:

Title: Re: Is alt charging affected with crank underdrive pulley?
Post by: IRRebel on June 10, 2010, 11:30:20 AM

Quote from: walshmotorsports on June 10, 2010, 11:00:53 AM

  I use one myself, works fine. :thumbup:

X2!

You also have to consider that we have little demand on the alternator. No lights, brake/turnsignals, etc. Kickass stereo in some cases, but other than the ignition system and guages, no draw. Consider the rpms we run at, yeah, reduce it to the rediculous.....

Ray