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Old 07-20-2013, 12:42 PM
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FLYWHEEL BROKE?

So I just finish my truck and go 3000 miles on the rebuild and so I get on it a bit. had the 300ll on the good ole spartan and wow....got 1 good pass down the tollway under 90mph but watched the torque hit about 900 and it sounded funny but it went away no loss in hp. the next day drive it gas saver way and sounds like i threw a rod but still had all my hp and no different color of smoke or loss of coolant.. turn it off and then tried to start it again an the starter just grinds!! talked to my tranny guy and he said I broke the flywheel.
now I know alot of you get on harder than me.
what should I do?
get a stock flywheel again and run the risk of tearing it up again? Do they even make a stronger flywheel?
I know I have to find the culprit of this but I think its from slamming the lock on the TC. How can I remedy that other than run a lower hp tune? I like the power on the 310 but i think its gonna get pricey........
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Old 07-27-2013, 10:28 PM
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Just had my flywheel replaced. When I would start it every now and then it would grind like it would sound if you turn the key while the motor is already running. Had it scoped and they showed me the pics of ground teeth. The local shop said it was nothing to do with the motor being turned up or anything, they have done all the aftermarket stuff for me. I had a few starters replaced before I had it scoped and still did the same thing. They said the bendix gear is harder than the softer flywheel and as it plunges and twist into the flywheel it just takes one wrong grab and then it starts grinding into the teeth. I also asked about a stronger flywheel and they said there wasn't really anything.
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Old 07-29-2013, 03:51 PM
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Well it looks like I sheered all the flywheel bolts. Took 45 min. To pull 8 and 2.5 hts to pull the other 2. New flywheel just in case and sanded all the rough spots on the crank... reallu not bad. And were in business today. Wow, the power is there and the tick I couldn't find is gone.... think I'm dun fnnn withrhis mother for now... thinking 71mm turbo is next lots of smoke on the 275tune so maybe maore air will help
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Old 08-03-2013, 09:20 AM
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There's billet flexplates available, but they're in the $800 range last time I looked.

My truck has a tick/rattle like the flexplate is cracked, I just haven't got around to pulling the trans to take a look yet.
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