MK7
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| posted on 4/11/03 at 10:51 PM |
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Is this TDC?
Hi,
can anyone confirm if this mark represents TDC for cylinder 1?. This mark is found on the Bosch distributor from my 1.8 Pinto.
 
Rescued attachment Dizzy TDC.jpg
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bob
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| posted on 4/11/03 at 11:12 PM |
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On my 2 litre pinto with the bosch dizzy its the gap or dip in the edge thats TDC if that helps.
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MK7
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| posted on 5/11/03 at 07:56 AM |
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Which Gap?
One of these gaps Bob?
 
Rescued attachment Dizzy TDC2.jpg
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bob
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| posted on 5/11/03 at 10:59 AM |
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Yup mine lines up with the bottom turquiose gap,i'm no help really as i'm colour blind and dyslexic LOL
The engine runs but i've not driven the car on the road yet,i'm just presuming its ok.
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Dusty
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| posted on 5/11/03 at 11:35 AM |
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Not sure thats correct. The turqoise gap is the locating cutout for the cap. It all works the other way round realy as the crank pulley timing marks
are the datum. Line up the firing mark (10deg BTDC) on the crank pulley with No 1 on compression stroke and then turn the distributor to line up the
original scribed line you indicated with the leading edge of the rotor arm contact. That gives an initial ignition timing to start the engine and
them correct with a strobe light. It doesn't indicate TDC.
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bob
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| posted on 5/11/03 at 05:10 PM |
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Thanks again dusty,your explanation is more precise.
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theconrodkid
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| posted on 5/11/03 at 06:42 PM |
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on bosch dizzys the scribe line in the middle of the rotor goes to the scribe line on dizzy body at tdc on no1 cyl
who cares who wins
pass the pork pies
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MK7
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| posted on 5/11/03 at 09:43 PM |
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Thanks
So, my plan is to align TDC on the camshaft pulley (while cylinder 1 is under compression), align the centre of my rotor arm with the
'red' notch on my dizzy while the crankshaft pulley is at 10 degrees BTDC then fit the timing belt.
Sounds like a plan...
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theconrodkid
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| posted on 5/11/03 at 10:42 PM |
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nearly,set crank to tdc as well
who cares who wins
pass the pork pies
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MK7
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| posted on 5/11/03 at 10:58 PM |
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Hmmmmm.........
If I do that, won't the ignition spark at TDC instead of 10 degrees BTDC?
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theconrodkid
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| posted on 5/11/03 at 11:15 PM |
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set it up with the marks and usually ok,adjust if nec
who cares who wins
pass the pork pies
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SteveO
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| posted on 8/11/03 at 10:37 AM |
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Hi Russell,
the conrodkid is right; once all the marks are lined up the engine should turn over nicely and you can make adjustments to advance or retard later
while the engine is ticking over with that sweet sound..
Hope all is going well.
Steve
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