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Finding CAM TDC
#9
Dear Fixkick:
As per usual, thank you for the great explanation your provided above).

Today, I took the timing belt cover off to check whether the Crank TDC was set right, and that also the Cylinder 1’s TDC (at the firing cycle) was also set properly, so my distributor’s installation would be correct. Well, they were are set correctly.

However, again, I have another fundamental question. There is a video on the Youtube that very beautifully, with a great detail, explains and demonstrate valve adjustment of 1.3L 8V Suzuki Samurai (1985-1995) engine, which seems to be almost identical to 1.6 8V engine that I have. In that video, when the technician wants to adjust the valves, he states that adjustment should be done when the lobe of each cam is at 6 O’clock , so that rocker arm is at the heal the cam of the valve being adjusted (that is the heal would be at 12 O’clock). This makes complete sense to me.

(Please see the video at: https://www.youtube.com/watch?v=ZPVn2xwO81Q - check at time 1:14)
However, I have now two engines; one being the new (used) one that I have recently installed in the car, and my old engine (which used to work perfectly before one of the connecting rods snapped!). When I put the engine at the TDC of Cylinder 4 (that is when the notch on the cam wheel is at 12 O’clock, as shown in the picture you posted in my thread), then the lobe of the intake cam of the cylinder is not exactly at 6 PM. If I put the lobe of the cam that corresponds to the intake valve of cylinder 4 at exactly 6 PM (which I suppose should put the lobe of the intake of cylinder 1 at 12 O’clock), then the factory notch on the cam wheel moves to 2 O’clock position, instead of the 12 O’clock. Exactly the same thing also happens when I check the old engine.

Can you please explain to me what is going on? The two engines cannot be coincidentally set incorrectly at exactly the same positions! I would appreciate your comment in regard to the above issue.

Now, if the setup is correct, I am going to conclude that the only reason I cannot get rid of the backfiring and low power is the car’s computer, since the distributer is also set properly, and that the timing is set at exactly 8 deg. BTC, with a strobe light (and the static timing jumper).
Looking forward to hearing your comments.
Regards,
Zackman
[color=#800080][b]91 Sidekick JX, 8V, S. Carolina Car, 2 dr, 3 speed Auto Trani, Halifax, NS, Canada[/b][/color]
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Messages In This Thread
Finding CAM TDC - by Zackman - 02-15-2016, 11:19 AM
RE: Finding CAM TDC - by fixkick - 02-15-2016, 11:45 PM
RE: Finding CAM TDC - by fixkick - 02-16-2016, 12:53 AM
RE: Finding CAM TDC - by Zackman - 02-16-2016, 01:53 AM
RE: Finding CAM TDC - by fixkick - 02-16-2016, 02:16 AM
RE: Finding CAM TDC - by Zackman - 02-16-2016, 05:12 AM
RE: Finding CAM TDC - by Zackman - 02-20-2016, 01:55 AM
RE: Finding CAM TDC - by fixkick - 02-20-2016, 02:39 AM
RE: Finding CAM TDC - by Zackman - 02-22-2016, 10:55 AM
RE: Finding CAM TDC - by fixkick - 02-22-2016, 09:49 PM
RE: Finding CAM TDC - by Zackman - 02-23-2016, 04:10 AM
RE: Finding CAM TDC - by Zackman - 02-23-2016, 05:57 AM

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