SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: BOOST on October 25, 2009, 05:21:16 PM

Title: Timing
Post by: BOOST on October 25, 2009, 05:21:16 PM

   My timing setup sucks the way it was rigged the marks only go to 8 on the timing chain cover, I have a basic timing light so I can only set timing at idle @ 3000 rpms I lose my marks, If I use timing tape on the balancer can I still use my timing marks on the cover.

Title: Re: Timing
Post by: MADSKILLZ on October 25, 2009, 05:34:28 PM

Yes as long as you line up the tdc marks on the tape with the marks on the dampner

Title: Re: Timing
Post by: BOOST on October 25, 2009, 05:39:57 PM

Quote from: cj222 on October 25, 2009, 05:34:28 PM

Yes as long as you line up the tdc marks on the tape with the marks on the dampner

  So if I do that the TDC mark on the timing chain cover is good to go, easy as that  :thumbup: 

Title: Re: Timing
Post by: GT Jets on October 25, 2009, 05:45:05 PM

Quote from: boost on October 25, 2009, 05:39:57 PM

  So if I do that the TDC mark on the timing chain cover is good to go, easy as that  :thumbup: 

Just be sure to index "true TDC" and go 0 to 0...Also the tape needs to be the right length for the math to work. I normally use a cut off tool to grind "hash" marks into the balancer..What can I say? I'm a cheap focker. ;D

GT

Title: Re: Timing
Post by: MADSKILLZ on October 25, 2009, 05:47:30 PM

Quote

Just be sure to index "true TDC" and go 0 to 0

x2

Title: Re: Timing
Post by: BOOST on October 25, 2009, 05:50:11 PM

   Thanks guys :thumbup:

Title: Re: Timing
Post by: obnoxious001 on October 26, 2009, 09:06:58 AM

Quote from: GT Jets on October 25, 2009, 05:45:05 PM

Just be sure to index "true TDC" and go 0 to 0...Also the tape needs to be the right length for the math to work. I normally use a cut off tool to grind "hash" marks into the balancer..What can I say? I'm a cheap focker. ;D

GT

I agree, you only really need one mark, depending on what total timing you want to run.  36 degrees is particularly easy to find.  Measure the circumference of the balancer and divide by 10 (full circumference is 360 degrees). 

Be careful to be accurate, and as mentioned, it does rely on TDC having been properly indexed.  I rebuilt one forced induction engine that had the timing mark off by 6 degrees.

Title: Re: Timing
Post by: BOOST on October 26, 2009, 07:56:04 PM

     http://www.setyourtiming.com/video.html

     Check it out ;D