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Author Topic: timing marks  (Read 5124 times)
steve1962
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« on: December 27, 2007, 10:43:31 pm »

i have read that the timing on the murena is 10 degrees btdc,however could someone tell me where the 10 btdc is on the casing.mine has four large marks divided by smaller or half marks yet no numbers on the side Huh? no indication which is 0 or 10 btdc at all ??
steve Huh Huh
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Anders Dinsen
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« Reply #1 on: December 28, 2007, 09:46:33 am »

Smiley same question was asked a few weeks ago: http://www.matrasport.dk/forum/index.php?topic=739.0

Have fun,
Anders Cool
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1982 Talbot Matra Murena 2.2 prep 142
2017 BMW i3 "Charged Professional" 94Ah

Used to own:
2001 Renault Matra Grand Espace "The Race" V6 24v
1997 Renault Matra Espace 2.0 8V
1987 Renault Matra Espace J11 2.2
roy4matra
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« Reply #2 on: January 01, 2008, 11:23:59 pm »

i have read that the timing on the murena is 10 degrees btdc,however could someone tell me where the 10 btdc is on the casing.mine has four large marks divided by smaller or half marks yet no numbers on the side Huh? no indication which is 0 or 10 btdc at all ??
steve Huh Huh

There should be marks but they are on the vertical face.  However, if you think about it, the engine rotates clockwise looking from the timing case, so the top of the flywheel is moving towards the front of the car and the last mark it reaches is top dead centre (0 degrees).  Each major division is 4 degrees advance, so two and a half gives you 10 degrees before top dead centre.  So the cut on the flywheel should be half way between the first and second marks it comes to as it rotates.

Roy
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