Timing Marks

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Timing Marks

Postby clee » Sun Jan 20, 2008 12:37 pm

As you can't see the flywheel mark for # 1 tdc with the engine installed I've taken some pics and ref to the pulley .

There are two notches in the pulley ,the one closest to the keyway will line up dead center to a screwhole on the timing cover as here ..........

Image
Image


There's another totally foolproof way to find TDC but that's a secret :wink: :lol:

See if you can guess ...............there's a clue ..................
Last edited by clee on Mon Jan 21, 2008 8:36 am, edited 1 time in total.
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Re: Timing Marks

Postby JohnC » Sun Jan 20, 2008 3:16 pm

clee wrote:See if you can guess ...............there's a clue ..................


The drill perhaps?
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Re: Timing Marks

Postby clee » Sun Jan 20, 2008 3:30 pm

JohnC wrote:
clee wrote:See if you can guess ...............there's a clue ..................


The drill perhaps?


Drill bit .............yes JC :P
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Re: Timing Marks

Postby JohnC » Sun Jan 20, 2008 4:18 pm

clee wrote:
JohnC wrote:
clee wrote:See if you can guess ...............there's a clue ..................


The drill perhaps?


Drill bit .............yes JC :P


Lee, Does it drop into a slot (if so what size drill bit), or what? you have got me intregued.
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Spunky Monkey top tip

Postby clee » Sun Jan 20, 2008 5:41 pm

Image
Image

Martin told me about this .8 mm diameter .You have to make sure it doesn't drop into the balancing hole .That is about 10/12 mm so you will have some slop if it does .The slot is a honeymoon fit though ,dead 8mm ,drill bit is 7.8 ,55 mm deep when seated .
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Postby JohnC » Sun Jan 20, 2008 6:08 pm

Lee,
Thanks for the info. I suspect there is a special tool for this. I have got the same pincipal on my two Marine Diesels, the tool screws into the hole and has a spring loaded pin (8mm) which drops into a hole in the flywheel as you rotate it slowly, at TDC. Very useful. Takes all the fun out of it though. :P
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Postby David Gentleman » Mon Jan 21, 2008 1:03 pm

JohnC wrote:Lee,
Thanks for the info. I suspect there is a special tool for this. I have got the same pincipal on my two Marine Diesels, the tool screws into the hole and has a spring loaded pin (8mm) which drops into a hole in the flywheel as you rotate it slowly, at TDC. Very useful. Takes all the fun out of it though. :P


Yes, there is a tool with a threaded tophat and rod that sits in there for that exact reason.
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