updated chain tensioners

[BYprodriver]

Originally Posted by jaykay

Has anyone gone and changed out their chain tensioners for the updated spring loaded type?

I would think that the spring load would be a great feature to mitigate chain lash on start up, before oil pressure builds up.

It seems Porsche has issued a TB regarding retro fit of the older tensioners; I am confused as to why this might be. Is there a dimensional, or stroke mismatch which is the issue?






...wanted to get this done while the oil is out

I use the new improved external spring tensioner when I rebuild a engine regardless of year. The TB refers to not mismatching chain drive gear type of crank & IMS. If you order a IMS chain tensioner for 2000 & older you will get the old style tensioner. If you order for 2001 & newer you get the new external spring tensioner. Once all the old design are sold the external spring version will be updated in PET as the replacement for all years. Porsche wants to sell all the parts it has bought not just the new improved parts. Order by part # to get the latest design.