Subject	Once you check timing with a light and teeth count>>
Posted by	ZUL8TR on March 24, 2013 at 10:09 AM
	This message has been viewed 204 times.
In Reply To	Ok, so my timing belt is "off"...........options? posted by LJZTT on March 21, 2013 at 10:47 AM
Message	between the pullies you need to check that the crank and camshafts are in sync. To do this place #1 Piston at TDC on the compression stroke(both intake and exhaust valves are closed) then look at the index marks on the crank sprocket and cam sprokects, they should line up with the marks on the engine as shown here [ [ http://300zx-twinturbo.com/cgi-bin/manual.cgi?list=em&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=17&design=default&total=70 ] ] When the belt is correctly installed the engine marks line up with the crank sprocket and cam gear index marks. This happens every other revolution only at the compression stroke regardless of the belt index marks which are only used for the initial install to get the teeth count right and the timing marks lined up when the #1 piston is at TDC. The belt index marks very rarely will line up again (as initially installed) once the engine is started so Do Not use them to check for proper timing alignment of the crank and the cams. ZUL8TR in Orlando,FL
Follow Ups	Ok, so my timing belt is "off"...........options? - LJZTT 10:47:00 03/21/13 food for thought - Zvil (FL) 11:05:58 03/21/13 you didnt read the post did you? (n/m) - LJZTT 11:42:18 03/21/13 lol yes I did - Zvil (FL) 11:59:26 03/21/13 explain how the timing belt can drift after a fresh 120k? - LJZTT 12:39:01 03/21/13 Tensioner not set properly - ChrisMedaris 12:48:13 03/21/13 anything else? - LJZTT 12:59:08 03/21/13 you can put the belt on with all the marks lining up and - ChrisMedaris 13:02:54 03/21/13 do I remember step by step what I did and didnt do - LJZTT 13:23:50 03/21/13 Hi, I'm a little bit lost on this.... - Medallion Man 13:02:25 03/21/13 I cant remember where the CAS was at immediately after - LJZTT 13:28:20 03/21/13 FYI (for future) PTU loop = +10 more degrees of advance - evan_aggie 00:21:55 03/22/13 I am aware of 5 causes to the timing drift - Zvil (FL) 13:34:50 03/21/13 then timing belt jumps should always result in timing that - LJZTT 18:21:54 03/21/13 skipping T-belt will only advance the timing - Zvil (FL) 20:38:14 03/21/13 then this cant be my problem - LJZTT 13:25:27 03/22/13 Have you removed the CAS and looked at the teeth for wear? - Woody75 (Denver) 15:44:39 03/21/13 yes, I remembered your post where you came across this - LJZTT 18:18:32 03/21/13 Just something to think about ... - Xteam300TT (South Tx ) 22:17:57 03/21/13 *this* (n/m) - evan_aggie 10:41:39 03/22/13 car runs like absolute crap with CAs in middle - LJZTT 13:27:22 03/22/13 No, it won't cause damage. - TriniTT 11:30:59 03/22/13 update........ - LJZTT 13:31:14 03/22/13 There IS only one way for the CAS to go on - Zvil (FL) 16:03:12 03/22/13 Once you check timing with a light and teeth count>> - ZUL8TR 10:09:29 03/24/13
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