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ficke ficke is offline
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Join Date: Nov 2004
Location: Tucson, Az.
Posts: 2,076
Porsche thought the hyd. tensioners( engine oil pressure fed self adjusting hyd. tensioners are the best) ) were better than fixed idlers (mech.) and used them in there race engines and the early 2.0 ran regularly over 8,000 RPM's. Mech tensioner's are inferiour, cam drive steel chain tension is constantly changing with engine temp and a self adjusting tensioner is considered mandatory by Porsche on the 911. The diffrence between loose and to tight is slight, shock loads on a whipping chain goes up exponationaly. If you run mech. tensioner you will need to check the tension regularly , on my SM, Maserati recomended every 2,000 miles. that is for a street car, on a Porsche you will have to jack up the car and remove the muffler and chain box covers and tin etc. and it should proably be done while it is hot so you have a clue to operating temp. tension. Sounds like a hassel to me for no real gain. go self adjust , Porsche did
Old 03-01-2005, 02:43 PM
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