r1_pete
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| posted on 4/4/08 at 11:08 AM |
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Zetec Blacktop TDC
Is this where the TDC locking tool goes on the blacktop zetec?
 
Rescued attachment TDC Plug.JPG
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whitestu
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| posted on 4/4/08 at 12:08 PM |
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I think it is although I tried to make a locking pin and use that hole, but gave up as I couldn't seem to find anything inside the hole for it
to go into.
I ended up using a dial gauge on No1 to find TDC.
Stu
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richardlee237
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| posted on 4/4/08 at 02:11 PM |
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Yes it is.
You fit the pin and then slowly turn the engine until the crankweb comes up against the pin.
It's a clever idea and intrinsically more accurate than a dial indicator, so long as the pin is correct length and no dirt under the head.
For an engine at top dead centre with 80mm stroke the piston movement for 1 deg of crank movement is about 0.007mm.
Using a pin the difference in pin length for 1 deg crank angle is approx 0.6mm
Of course my copy of Excel could be wrong
Quote Lord Kelvin
“Large increases in cost with questionable increases in performance can be tolerated only in race horses and women.”
Quote Richard Lee
"and cars"
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big_wasa
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| posted on 4/4/08 at 04:37 PM |
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Ive had a clock on mine and was shocked by the amount of dwell.
 
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