986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Timing 360 Degrees Off. What is the quickest way to correct?

martsink · 11-19-2017, 09:48 PM

Hey Guys,

I need help with the most appropriate and fastest procedure to fix my mistake. I was replacing a bad lifter on bank 4-6, but I set the engine to the wrong TDC (the index cam was pointing outward instead of inward). I only realized when I put it all back together and went to check the timing.

What I was thinking of doing is:

- Remove the 4 bolts on the exhaust cam sprocket (see below) to allow it to rotate 360 degrees

- Undo the chain tensioner to relieve some pressure from the sproket
- Lock the cam in position with the cam holding tool
- Rotate the engine 360 degrees
- Check the timing (should be correct now)
- replace and torque the 4 bolts on the exhaust cam sproket

Edit: this is a 5 chain engine

Let me know if I'm missing something or if my procedure doesn't make sense.

Thanks!

11-19-2017, 09:48 PM	#1
martsink Registered User Join Date: Dec 2014 Location: SF Bay Area Posts: 246	Timing 360 Degrees Off. What is the quickest way to correct? Hey Guys, I need help with the most appropriate and fastest procedure to fix my mistake. I was replacing a bad lifter on bank 4-6, but I set the engine to the wrong TDC (the index cam was pointing outward instead of inward). I only realized when I put it all back together and went to check the timing. What I was thinking of doing is: - Remove the 4 bolts on the exhaust cam sprocket (see below) to allow it to rotate 360 degrees - Undo the chain tensioner to relieve some pressure from the sproket - Lock the cam in position with the cam holding tool - Rotate the engine 360 degrees - Check the timing (should be correct now) - replace and torque the 4 bolts on the exhaust cam sproket Edit: this is a 5 chain engine Let me know if I'm missing something or if my procedure doesn't make sense. Thanks! Last edited by martsink; 11-20-2017 at 07:35 AM.