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09-26-2011, 06:55 PM
#76
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I can't imagine anything other than a toothed roller would have stopped the belt dead like that. The interesting thing is, as Sterling says the crank gear is good, then why would IT kill the belt there and not the oil pump (if that is the culprit) ... Actually, this way the only possibility is the cams - they have most traction.
09-26-2011, 07:09 PM
#77
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the belt fuzz was on the tensioner side of the crank cog. The oil pump spins easily as well as the waterpump. Passenger cam could rotate back and forth, but drivers side cam did not. I will get a closer look at it tonight.
no high torque starter..... just stock.
no high torque starter..... just stock.
09-26-2011, 07:40 PM
#78
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09-26-2011, 09:29 PM
#79
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death by variocam.....
Thanks everyone for the offers to help. I got the drivers cam cover off, and the variocam chain tensioner pad broke, and got wedged onto the exhaust cam teeth.
Last edited by 928er; 11-25-2012 at 09:31 AM.
Sterling... happy it wasn't worse. Makes sense now eh?
09-26-2011, 10:13 PM
#82
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09-26-2011, 10:14 PM
#83
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That pad looks like it was made to fit around the sprocket
Isn't this an occasional problem with 968s? I vaguely remember something about their tensioners.
If there's anything I can do to help I'll be here for you.
Isn't this an occasional problem with 968s? I vaguely remember something about their tensioners.
If there's anything I can do to help I'll be here for you.
09-26-2011, 10:17 PM
#84
Team Owner
thats a bummer Sterling,
I hope that there are not any pistons damaged
I hope that there are not any pistons damaged
09-26-2011, 10:27 PM
#85
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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.
09-26-2011, 10:35 PM
#86
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How long had that pad been in the engine?
It has the brown color of a very old pad or long interval oil changes.
But then again the cam gears are very brown with broken teeth also.
Your car is pretty brown also...............
Still sucks man.
It has the brown color of a very old pad or long interval oil changes.
But then again the cam gears are very brown with broken teeth also.
Your car is pretty brown also...............
Still sucks man.
09-26-2011, 10:44 PM
#87
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Hmmm I don't see any broken teeth.......Pads were new when I built the engine several years ago. The cams were finished with a copper like finish and parkerizing on the lobes...
They looked like this when new
They looked like this when new
09-26-2011, 10:50 PM
#88
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Looks like the tooth at about the one oclock position is broken, and it may just be the picture on both, but it sure looks like a lot of deposits on the cam, but I see no deposits on the cam bearings, so it may just be the lighting.
EDIT: picture when sharpened and lightened show the teeth not broken.
Sorry for giving you a WTF moment buddy.
EDIT: picture when sharpened and lightened show the teeth not broken.
Sorry for giving you a WTF moment buddy.
09-26-2011, 11:41 PM
#90
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Sterling. Do your variocam heads use triple square or allen head bolts to hold the bearing caps down. Looks like allen head but tough to tell with the oil in them.