986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Updated chain tensioner

jaykay · 09-25-2015, 03:19 PM

Okay here we go again

Just went pick up the most up to date chain tensioner for the IMS to crank chain. It's the one with the external spring. I was told that this spring type is not compatible with my early 2000 986S engine (dual row IMS bearing) as I have a roller chain type IMS drive and not the newer tooth drive chain.

These changes ( tooth chain ) were instituted for engine numbers M96.21 67 1 02086 onward. Apparently they could tell from my VIN that mine was an earlier engine (not sure I trust vin based engine component listings where is the engine number again?). I believe this is covered in a bulletin 8/00 1551.

So I belive some of you have put the newer style tensioner in irrespective of engine series and earlier chain type . Is it okay? Any issues? Did it help to chain rattle on startup?

09-25-2015, 03:19 PM	#1
jaykay Registered User Join Date: Sep 2009 Location: toronto Posts: 2,668	Updated chain tensioner - IMS to Crank Okay here we go again Just went pick up the most up to date chain tensioner for the IMS to crank chain. It's the one with the external spring. I was told that this spring type is not compatible with my early 2000 986S engine (dual row IMS bearing) as I have a roller chain type IMS drive and not the newer tooth drive chain. These changes ( tooth chain ) were instituted for engine numbers M96.21 67 1 02086 onward. Apparently they could tell from my VIN that mine was an earlier engine (not sure I trust vin based engine component listings where is the engine number again?). I believe this is covered in a bulletin 8/00 1551. So I belive some of you have put the newer style tensioner in irrespective of engine series and earlier chain type . Is it okay? Any issues? Did it help to chain rattle on startup? __________________ 986 00S