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jaykay · 09-30-2014, 04:11 PM

Thanks for the feedback guys....I had never seen that temperature drift before.

I replaced the chain tensioners with new ones....and lost my oil in the process so that was changed too.

I still saw a drift in cam dev. up to 80 C. They seemed to stabilize there after. I noticed that actual cam shaft angle does dance continuously; it seems that the deviation angle must be sampled in part from cam angle
The deviations seem to stabilize at pos1.> -2.00 and pos2.> 3.72 which is an improvement, but during the warm up I did see pos1.> -2.19! So on the surface it seems that the new tensioners did help bring things closer to ideal. The engine feels more like a tight new engine and the rattle is gone....even with my interior stripped. It feels great.

I found a lot of what I believe to be variocam pad material in the oil filter (no metal to speak of):

I am thinking that my lazy old tensioners have contributed to more aggressive wear on the vario pads due chain "whip" at lower speeds (I believe they actuate just below 3000 rpm). I only dip below 3K when I have to

09-30-2014, 04:11 PM	#4
jaykay Registered User Join Date: Sep 2009 Location: toronto Posts: 2,668	Thanks for the feedback guys....I had never seen that temperature drift before. I replaced the chain tensioners with new ones....and lost my oil in the process so that was changed too. I still saw a drift in cam dev. up to 80 C. They seemed to stabilize there after. I noticed that actual cam shaft angle does dance continuously; it seems that the deviation angle must be sampled in part from cam angle The deviations seem to stabilize at pos1.> -2.00 and pos2.> 3.72 which is an improvement, but during the warm up I did see pos1.> -2.19! So on the surface it seems that the new tensioners did help bring things closer to ideal. The engine feels more like a tight new engine and the rattle is gone....even with my interior stripped. It feels great. I found a lot of what I believe to be variocam pad material in the oil filter (no metal to speak of): I am thinking that my lazy old tensioners have contributed to more aggressive wear on the vario pads due chain "whip" at lower speeds (I believe they actuate just below 3000 rpm). I only dip below 3K when I have to __________________ 986 00S Last edited by jaykay; 09-30-2014 at 04:33 PM.