Is this timing correct?


7 replies to this topic
  • FinchFan194

Posted September 07, 2012 - 09:41 PM

#1

Enigine is at TDC
Posted Image

  • stroker101

Posted September 07, 2012 - 09:51 PM

#2

i just put my 09 YZ450F engine back together, and yes, that looks correct. as long as the correct timing mark is used.

greyracer513 educated me with the markings on the cranksahft. ( the manual doesn't show all the markings on the flywheel )

Edited by stroker101, September 08, 2012 - 01:33 AM.


  • FinchFan194

Posted September 07, 2012 - 10:01 PM

#3

Yes I am using the mark on the far right. The ex has marks at 9 and 12 and the intake has marks at 12 and 3. The manual doesn't show the makes for the intake at 12 and 3 only 3 so I wasn't sure this was right.
Did you have marks at 12 and 3 on intake?

  • stroker101

Posted September 08, 2012 - 01:17 AM

#4

yes, i do.

the dimples on the intake cam sprocket were very visible. however one the dimples on the exhaust cam sprocket (12 o'clock) was barely visible and using my magnafying glass was about the only way "I" could see it. my eye's are getting bad

Edited by stroker101, September 08, 2012 - 01:18 AM.


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  • FinchFan194

Posted September 08, 2012 - 05:47 AM

#5

Thank you

  • STR8SHOOTR

Posted September 08, 2012 - 06:48 AM

#6

What did you do to the motor??

  • FinchFan194

Posted September 08, 2012 - 08:10 AM

#7

Had about 12% leak down, new top end including cylinder jug. Thing runs like a top now!

  • STR8SHOOTR

Posted September 11, 2012 - 03:01 PM

#8

Had about 12% leak down, new top end including cylinder jug. Thing runs like a top now!

Cool, good luck!





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