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    Thread: Top Dead Center Mark on Flywheel

    1. 07-01-2008 10:26 PM #1
      Attempting to install a cylinder head on a block that was taken apart without marking the crankshaft.

      Does anyone have a Bentley guide or their own knowledge that could help me identify the marking on the flywheel that signifies TDC?

      I know I've seen stuff on the web about this before, but now that I need it I can't find it. Though I feel like I've read a few different theories. Anyone know for sure?


    2. 07-01-2008 10:59 PM #2
      there is a mark on the crank/timing belt gear, no need to look at the flywheel.

    3. 07-01-2008 11:10 PM #3
      Is there a TDC on the crankshaft sprocket? The only marking that I'm aware of is the one on the camshaft sprocket (that lines up with the rear timing cover).

    4. 07-02-2008 12:41 AM #4
      There's one on the crank PULLEY. I had the time of life trying to figure out where the notch was on the crank gear when I did my TB job. . . and then I found out that there WASN'T one. The pulley has the notch - just leave the pulley on while adjusting the timing.

    5. Member bootymac's Avatar
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      07-02-2008 03:04 AM #5
      There's no TDC mark on the crank gear. I used the TDC marking on the cam gear and flywheel when I did my timing belt

      Here's a photo from the DIY:


    6. Member MightyDSM's Avatar
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      07-02-2008 03:51 AM #6
      ^^^
      I did the same thing...couldn't find the mark on pulley
      Look at your signature, now back to mine, now back to yours, now back to mine. Sadly, yours isn’t mine.

    7. 07-02-2008 01:32 PM #7
      so what happens if you take the tranny/clutch off? when you go back on how does it align? Isn't a bunch of splines, so how do you know to align it so it's TDC with the crank? or does it not matter?


      Modified by infinityman at 1:36 PM 7-2-2008

    8. 07-02-2008 02:58 PM #8
      it doesnt matter. the engine timing marks ensure that the cams are in sync with the crank... tranny is irrelevant

    9. 07-02-2008 03:04 PM #9
      Quote, originally posted by jazzpur »
      it doesnt matter. the engine timing marks ensure that the cams are in sync with the crank... tranny is irrelevant

      yeah I understand that, but it'd be nice to have it line up.


    10. 07-02-2008 10:38 PM #10
      line up with what>?

    11. 07-02-2008 11:34 PM #11
      Quote, originally posted by jazzpur »
      line up with what>?

      have the flywheel mark line up, when the crank does (aka when you put the tranny back on the motor)


    12. Member zeusenergy's Avatar
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      07-03-2008 10:18 AM #12
      Flywheel only comes off the motor AFTER you remove the transaxle and clutch. You would have to be working on the rear main seal or flywheel itself for the mark to be "off", and I think there is a keyway (or dowel) to line it back up anyway. So you should not need to worry unless pulling the flywheel itself.


      Modified by zeusenergy at 7:21 AM 7-3-2008
      2001 New Beetle Sport~1.8T~02J~Eurospec sport gear set~Quaife LSD~ECS SMF/VR6 clutch~Eurodyne Maestro~STG2 K03s~3" Tsudo turboback~ALL Emissions deletes~Stripped down... 2500lbs! 11lb/BHP

    13. 07-03-2008 12:53 PM #13
      Great. I found it. Thanks Bootymac.

    14. 07-03-2008 01:06 PM #14
      Quote, originally posted by zeusenergy »
      Flywheel only comes off the motor AFTER you remove the transaxle and clutch. You would have to be working on the rear main seal or flywheel itself for the mark to be "off", and I think there is a keyway (or dowel) to line it back up anyway. So you should not need to worry unless pulling the flywheel itself.


      Modified by zeusenergy at 7:21 AM 7-3-2008

      wow, I didn't even think about that.

      Thank you so much!


      me =


    15. 07-03-2008 03:50 PM #15
      Quote, originally posted by mrm4cu »
      Attempting to install a cylinder head on a block that was taken apart without marking the crankshaft.

      Does anyone have a Bentley guide or their own knowledge that could help me identify the marking on the flywheel that signifies TDC?

      I know I've seen stuff on the web about this before, but now that I need it I can't find it. Though I feel like I've read a few different theories. Anyone know for sure?


      TDC is real easy to spot when "THE CYLINDER HEAD IS OFF THE BLOCK" YOU CAN SEE WHEN THE PISTON IS ALL THE WAY UP


    16. Member zeusenergy's Avatar
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      07-04-2008 08:44 AM #16
      Quote, originally posted by enginerd »


      TDC is real easy to spot when "THE CYLINDER HEAD IS OFF THE BLOCK" YOU CAN SEE WHEN THE PISTON IS ALL THE WAY UP


      'Touche!!!
      2001 New Beetle Sport~1.8T~02J~Eurospec sport gear set~Quaife LSD~ECS SMF/VR6 clutch~Eurodyne Maestro~STG2 K03s~3" Tsudo turboback~ALL Emissions deletes~Stripped down... 2500lbs! 11lb/BHP

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