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Old 05-15-2008, 03:29 PM
vml vml is offline
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Join Date: Feb 2004
Location: Pittsburgh, PA
Posts: 24
Quote:
Originally Posted by superloaf View Post
ok, then here's the million dollar question: why? i mean why the hell would a belt need to be loosened everytime the rpm's increased? temperature makes perfect sense but rpm?
I doesnt need to be loosen with RPM's, that's just a non-needed feature. The point is that the difference in pressure between cold and hot is higher than between low and high RPM's so the detensioning technique works where is supposed to.
Quote:
Originally Posted by superloaf View Post
somewhere in germany, an engineer is laughing hysterically!
No they are not. The 911 engine went from an unreliable mechanical/thermal to a reliable hydraulic one. The Alfa hydraulic one works perfectly but the problem is that it easily develops a small leak and contaminate the timing belt causing it to fail prematurelly. The 911 engine uses timing chains so a leak will not cause any problem; in fact, it migh even help with lubrication.
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