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Drifting
Joined: Oct 2009
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From: Alberta, Canada
I guess the silver lining is that I started collecting parts to replace the variocam about 3 years ago.... I have heads with 968 intake valves cleaned bagged and ready to go, Simard billet gun drilled cams, Ott ITB's all ready to bolt on... I even have the headgaskets..... In the next few weeks I will be mocking up fuel lines, as well as an airbox, and fabbing up a custom cross brace.
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in this case the tensioner in the 968 tensioner was never designed to have a load placed on it from this angle. Passenger side is exactly like the 968 in production.... this is 180 degrees out.....
928 Collector
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From: Seattle
The oil pump gear is a toothed roller, so I think it is a possibility. The cam gears have the most wrap, so my guess is they are more likely to stop the belt and cause the crank gear to strip teeth. We had a seized water pump (not a toothed roller) do something similar locally (lots of stripped teeth at the crank gear), but there was real obvious evidence of the water pump seizure.
Man of many SIGs
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From: Florida, USA
You mentioned in an earlier post that these cams will be hung on the wall. Does that mean the end of your variocam system or did you have Mike Simard machine the new cams to work with the vario?
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From: Berkeley, CA
So at low rpm & high rpm the tensioner piston is extended & at midrange, it's relaxed? The operation is reversed from the passenger side?
Race Car
Joined: Dec 2003
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From: Atlanta, GA
If the only issue is that the tensioner is oriented in the opposite way on the driver's side and that causes the tensioner pad to come off, wouldn't it be pretty easy to modify the tensioner body to contain the pad better?
Dan
'91 928GT S/C
475hp/460lb.ft
Dan
'91 928GT S/C
475hp/460lb.ft
Under the Lift
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From: Buckeye, AZ
So, was the broken plastic pad originally on top of the tensioner plate seen to the right in the picture? Are the pad retaining screws still there? If not, they may be in the pan.
Looks like you are very ready for the parts swap. Should be a screamer. Good luck on the rest of the job.
Looks like you are very ready for the parts swap. Should be a screamer. Good luck on the rest of the job.
