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Registered
Join Date: Jul 2003
Location: Albuquerque, New Mexico
Posts: 374
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Why did this happen?
I have the engine out to replace the flywheel. But before I put everything back together I though I'd ask if anyone knows why a flywheel would get eaten up so much. The teeth on the old one are just completed chewed up. Anyone have similar problems? Included is a pic. Oh I am using a new bosch starter as well, the teeth on the old one are worn down too. Thanks Sam
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12-30-2003, 08:42 AM
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Registered
Join Date: Jul 2002
Location: Southern California
Posts: 5,067
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Wow!
 Looks like a question for JW.
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1984 Targa |
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12-30-2003, 08:47 AM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,493
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Some uneducated guesses: Starter not completly engaging or the starter engaged and wouldn't disengage while the engine was running.
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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12-30-2003, 08:48 AM
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Senior Member
Join Date: Feb 2000
Location: Lacey, WA. USA
Posts: 25,310
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I agree that the "why" question is a good one for JW. In the meantime, I assume you know that your engine needs a new Ring Gear and the starter probably needs a nose gear replacement.
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Man of Carbon Fiber (stronger than steel) Mocha 1978 911SC. "Coco" |
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12-30-2003, 08:53 AM
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Unregistered
Join Date: Aug 2000
Location: a wretched hive of scum and villainy
Posts: 55,652
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Possible causes?
loose starter (seen that one before) cranking and cranking way too long to try and start a messed up car (seen that too) Damaged bendix that hangs up Worn starter gear Wrong starter/improper engagement that's all I can think of right now |
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12-30-2003, 08:59 AM
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Join Date: Aug 2001
Location: Mason, OH
Posts: 2,568
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By the looks of that thing it is amazing that the car even started.
Was it like that all the way around or just on the section you show in the picture?
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Doug '81 SC Coupe |
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12-30-2003, 04:39 PM
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You do not have permissi
Join Date: Aug 2001
Location: midwest
Posts: 39,870
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Does the engine turn over easily by hand(too much torque required)?
Is the flywheel/transmission correct for the engine type(starter too close). I'd agree with the guess that the last starter was not disengaging. It looks evenly chewed all the way around.
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Meanwhile other things are still happening. |
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12-30-2003, 05:00 PM
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What year car? On mine there is a starter ring, maybe it was missing and put undue pressure on the flywheel. Just a guess.
John
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1985.5 944 GTS |
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12-30-2003, 05:03 PM
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Join Date: Jul 2003
Location: Albuquerque, New Mexico
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The engine turns over easily and runs very well. The flywheel and tranny are right for the car it is a '69 911. 2.0 and 901 trans. The teeth aren't messed up as badly all the way around (the picture shows the worst) at best though the teeth are about 3/4's there.
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Sam Gonzales '69 912 2.0 -6 power |
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12-30-2003, 06:02 PM
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Registered
Join Date: Apr 2001
Location: Linn County, Oregon
Posts: 48,529
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Well, somethin' shore as he!! ain't lined up right!
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12-30-2003, 06:25 PM
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Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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Sam,
Let's see ... did the 'former' teeth of the ring gear reside at the bottom of the bellhousing as a neat little pile of shavings??? Maybe somebody bumped the starter switch (or a random switch failure) caused the starter to engage at 7000+ rpm? ps ... Not a '69 trans or 'cup-type' flywheel, that would be a '70 or '71 version of the flywheel & pressure plate for the last '911' version of the 901 that used a pulley and Bowden cable sheath to do the actuation of the throwout bearing!
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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12-30-2003, 06:54 PM
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Make Bruins Great Again
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I had a problem with chewed up ring gears. It turned out to be the starter wasn't shimmed properly (too close to the flywheel).
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-------------------------------------- Joe See Porsche run. Run, Porsche, Run: `87 911 Carrera |
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12-30-2003, 07:14 PM
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1984 Porsche 911 3.2
Max
