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Top dead centre


blacktur8oute

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  • Member For: 10y 3m 27d
  • Gender: Male

Hi all

im about to install head studs, valve springs and install an atomic oil pump I’ve taken the timing chain cover off and I’m at top dead centre why don’t the yellow links line up at the top of the cams but when reinstalling they must just curious 

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  • Dropping a turd
  • Gold Donating Members
  • Member For: 16y 5m 1d
  • Gender: Male
  • Location: Perth

As long as the distance between the cam sprockets is correct they dont need to line up exactly. Dont let the chain lose the location on the bottom tone ring.

 

This is close enough.

 

fqeN1Kl.jpg

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  • 3 weeks later...
  • ...JD TUNING ADELAIDE...
  • Gold Donating Members
  • Member For: 15y 9m 26d
  • Gender: Male
  • Location: Adelaide

It’s common for all of the timing assembly to sway slightly either right or left but the simplest way of knowing everything is correct is the timing marks on the chain are in direct location to the dimples and lower sprocket markers 

 

it literally can’t be wrong if these all align hence the amount of markers 

 

you'll also notice the cam phasor sprockets actually sit skew slightly not exactly bang on 12 o’clock mark up top 

 

always rotate the assembly by hand many times afterwards to check clearance and give the tensioner ratchet a chance to take up 

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