Broke my sfi flexplate
Apr 13, 2015 | 10:45 PM
#32
I've broke 2 first one was stock broke on the dyno 2nd was a yank sfi broke spun and locked didn't know it was even broke till I pulled the trans I now have another stocker in there haven't had a single issue and I've hit it with a 275 shot multiple times I'm assuming it had something to do with my converter at the time I went to an fti and now a Ptc 10" 4000 no issues yet
Apr 14, 2015 | 07:12 AM
#33
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From: jennings,louisiana
Are you certain you don't have a damaged dowel pin on the back of the block? What does the snout of the converter look like? Is the bushing in the pump beat up or out of round? Are you using all the bolts to mate the tranny to the engine? Just throwing things out there.
When you have the sex plate off, you might want to put a dial indicator on the crank just to make sure it is flat and true. Make sure there is no left over threadlocker between the surfaces. I would pay close attention to the holes in the flex plate and see if the threads were leaving indentations causing stress.
When you have the sex plate off, you might want to put a dial indicator on the crank just to make sure it is flat and true. Make sure there is no left over threadlocker between the surfaces. I would pay close attention to the holes in the flex plate and see if the threads were leaving indentations causing stress.
I do run all the bolts and theres no gaps anywhere around the bell housing. I'd think if something was off if be getting vibration or something. I will check crank for flatness.
Apr 14, 2015 | 07:28 AM
#35
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From: jennings,louisiana
[QUOTE=brandon6.0;5285802]Do u have any type of vibrations? When your breaking the flexplates what is happening? Stress crack around inside bolt pattern
It's cracking around the bolts
It's cracking around the bolts
Apr 14, 2015 | 09:21 AM
#37
Yea ive never seen one broke like that. Usually its cracked and just rattles around. That one looked to be a stocker that broke off completely. Damn. What about a bad harmonic balance? Could that be a possibility.
Thats definately a wierd situation u got there.
Thats definately a wierd situation u got there.
Apr 15, 2015 | 07:02 PM
#39
I'm apparently the only one here who thinks it's a failure of structural integrity.
Put the TCI on it, that will answer the question. It will not break, but if there was another cause of your other broken flexplates, something else is going to break.
Put the TCI on it, that will answer the question. It will not break, but if there was another cause of your other broken flexplates, something else is going to break.
Apr 15, 2015 | 08:51 PM
#40
The first one is not even bolted up correctly.
I would check your input shaft play on your trans, as well as the end play on the crank.
Also check the crank flange for trueness.
Have you sent any of the converters back to be checked after the failures???
High end/low end convertor models???
What type of converters for each failure???
Were they spec'd for nitrous use at the time of order???
I would check your input shaft play on your trans, as well as the end play on the crank.
Also check the crank flange for trueness.
Have you sent any of the converters back to be checked after the failures???
High end/low end convertor models???
What type of converters for each failure???
Were they spec'd for nitrous use at the time of order???