How's this for messed up? Got the first torque converter bold out, rotate the crank around to get the the second and what do I see? Holy shit, that's a flex plate to crankshaft bolt loose in there... along with a big ass hole in the flexplate...
How's this for messed up? Got the first torque converter bold out, rotate the crank around to get the the second and what do I see? Holy shit, that's a flex plate to crankshaft bolt loose in there... along with a big ass hole in the flexplate...
Well that's a new one. Somebody screwed up badly and it came back to wreak revenge on the flex plate. This was looking to go auto destruct sometime very soon.
Transmission shop that installed my rebuilt tranny and new torque converter...Originally Posted by geezer101
Anyone know where to buy the flex plate to torque converter bolts? Need 3.
...a shop did that. I know what I'd be doing -
^this....a shop did that. I know what I'd be doing -
I feel for ya, but have no advice about flexplates, haven't got in to mine yet though may soon. At least you know this go round it'll be done right since you're doing it yourself. Jeez. Would love to know where you found a new flexplate, I'd like an extra, too. Called Baxter's auto parts here & they didn't even have one listed.
When extra bolts were needed here I got sent to http://vancouverbolt.com (local) surely there's a place like that near you, bolt & fastener supply place. Take a good one in & tell them you need 3, same size hardness, threadcount & what it's for & they can hook you up.
Maybe these match yours: http://www.rockauto.com/en/moreinfo....614603&jsn=587
hope that helps, found at rockauto has part # to buy elsewhere also
So. The saga continues. Finally got the transmission off after we realized we had missed one bolt up at the very top. Duh.
Damage from the loose bolt to torque converter. Surface damage only? Or worse. No idea...
20160501_092248.jpg
Here you can see that another bolt was starting to work its way loose:
20160501_092312.jpg
Left - bolt that was coming loose. Right - bolt that was in between the flex plate and torque converter. Notice the threads on each
20160501_100126.jpg
Finally got the flex plate off... wow.
20160501_103932.jpg
Just wow...
20160501_103943.jpg
Close up of some of the damage
20160501_103952.jpg
Back sides
20160501_104113.jpg
End of the crankshaft. Notice the bolt stuck in the one? That's the leftovers of the bolt that was loose in between the flex and the torque converter. Gah.
20160501_104242.jpg
Spacer damage
20160501_121943.jpg
Closeup of back spacer
20160501_121947.jpg
Closeup of front spacer
20160501_121953.jpg
So now the next challenge will be:
1) Getting the snapped off bolt out of the crank
2) The two bolts that worked loose have bad threads inside the crank... retap?
Oh that is nasty right there. Those are hardened bolts so I hope it hasn't messed up the threads badly. I'd try retapping the threads and hope for the best - or you're up for a new crank
I was thinking on the ones with the bad threads using a thread repair kit, the helicoil type.
Any thoughts on this? Good idea? Bad idea?
Thoughts: search around forums / google for "helicoil fail" (with or w/out quotes) and see what comes up, like comments here: http://www.practicalmachinist.com/vb/general-archive/helicoil-failure-90103/ for example.
Or Youtube vids for helicoil fail. Consider the source, if someone says "I've never seen a helicoil fail", eh means little if they've only been back in to a few places where helicoils were used in the same type of situation you're planning. Think old metal, hard vs. softer, moving parts, torque, stress, sheer, heat/cooling differences, etc.
Whatever reasons for failure where others have done it, well, there's your sign to not do it how they didThinking find out "how to NOT do it" or "WHERE to NOT use helicoils" vs. "How to".
^ those are my thoughts. Don't know why not, would call helicoil if possible & ask. Even if they can't tell you, they'll ask you questions about the application you're planning & give you a different angle to think about maybe.
Wow!, What was the name of the stuff you were smokin when you put it back together? Gonga! My gawd that looks gnarly from the photos and must of made some hell of a noise before it stopped. Gotta think how much torque was applied to that flywheel to create a tear sideways on something like that. Incredible, wonder what hidden damage could of occurred on a hit with something so violent as that.
Well, replace the broken parts, flywheel must be an exact match since they balance them things and I'm not sure if they balance to crank essembly or not. Using coil for threading should be fine since there are 5 other bolts to help. Sure hope you can torque to specs on the coil hole though. If not maybe a tiny lock tight if required to ensure it doesn't back out, which probably won't happen, IF YOU TIGHTEN IT!, lol.
If coil doesn't work, you'll need to retap and use a larger bolt which will throw balance off a small amount.
Keep us informed and let us know if you have any further questions.
If you've seen a flywheel explosion it was probably not as violent or destructive as the one that occurred in San Diego one day. An 11,000 pound, 7 foot in diameter flywheel rotating at 6000 RPM exploded in the building of a Company ripping through the roof and injuring several employees of,(and get this), "Quantum Energy Storage".
Cal OSHA fined them $58,000 in addition to other infractions, failing to use a protective flywheel shield.
Obviously they failed the Sfi Tech inspection.
explosion.jpg
Last edited by BradMph; 05-06-2016 at 12:04 PM.
I was of the same opinion on using a helicoil insert on such a highly stressed component like a crank. Problem is that there has already been one bad install on the flex plate end of the crank so it'll be difficult to gauge what effect it will have trying a repair like this.
The output end of a crank shaft is by far the most stressed point in a drive line and, as you can see, if you get assembling it wrong it will do some serious damage (hopefully it hasn't screwed up a seal or bearing in your transmission).
...and there's a reason why scatter guards are fitted to high revving street cars that get some strip time - so you don't get both of your feet cut off if your flywheel fails
So, I've never touched this part of the truck before... had a rebuilt transmission put on by a transmission shop. Wasn't me. Truck died almost two years ago, took me over a year to find a "new" flexplate for the damn thing. The rusty flexplate is the replacement, btw.
Ohhh, sorry...misunderstood your post. Every year I get older I loose a little more brain cells.I think I have a few more though.
Well, finally some success. Got the broken bolt out:
20160612_102023.jpg
Got the crank threads cleaned up, put the new flexplate and spacers on (and I used red loctite on the bolts).
Next up, swap the torque converter with the new one and start putting everything back together!
Last edited by haruman; 06-13-2016 at 06:29 PM. Reason: spelling
Good to hear you beat it haruman. One stupid bolt...
Just dropped the driveshaft off at Phoenix Rack and Axle, they're gonna put the new carrier bearing on for me. Didn't feel like messing with it, they'll have it done in like 20 minutes.
Annnnnd just picked it up. New bearing installed. Easy.
So are you close to being on the road or is this a done deal?
Close. With it over at my brother's house don't get to work on it as often as I like...
Now, all the parts are in place, it's just a matter of swapping the torque converter, hooking the tranny back up, exhaust, starter, and driveshaft.
Update:
Worked on the truck this morning, got the old torque converter out, new torque converter in, transmission attached to engine, cross member attached, starter attached, parking brake attached. Still have to bolt torque converter to flex plate, install drive shaft, attach exhaust, attach kick down linkage.
its-alive-1200x475.jpg
Got everything buttoned up this morning.
Here she is next to my DD, moved under her own power for the first time in just over 2 years!
3250383664549104414_account_id=1.jpg
Reply With Quote
Bookmarks