flatcat19 Posted November 4, 2014 Report Share Posted November 4, 2014 How the fuck? Quote Link to comment
uberkevin Posted November 4, 2014 Author Report Share Posted November 4, 2014 ....... Quote Link to comment
bananahamuck Posted November 4, 2014 Report Share Posted November 4, 2014 ..... Quote Link to comment
uberkevin Posted November 4, 2014 Author Report Share Posted November 4, 2014 ..... ....... Quote Link to comment
flatcat19 Posted November 4, 2014 Report Share Posted November 4, 2014 ....... ..... ......... Quote Link to comment
tr8er Posted November 4, 2014 Report Share Posted November 4, 2014 Did your diff lock up? That's crazy! Quote Link to comment
wayno Posted November 4, 2014 Report Share Posted November 4, 2014 You guys on your periods? 1 Quote Link to comment
uberkevin Posted November 4, 2014 Author Report Share Posted November 4, 2014 Wayno nailed it!!! Don't believe my diff locked up.. maybe for a sec while shit was hitting the fan... floor borad. Quote Link to comment
wayno Posted November 4, 2014 Report Share Posted November 4, 2014 What's the tank look like? Quote Link to comment
datzenmike Posted November 4, 2014 Report Share Posted November 4, 2014 Did your diff lock up? That's crazy! The diff didn't lock up. Billions of cars a year lock up their rear brakes and the transmissions don't explode. Quote Link to comment
tr8er Posted November 4, 2014 Report Share Posted November 4, 2014 The diff didn't lock up. Billions of cars a year lock up their rear brakes and the transmissions don't explode. Usually the gas peddle is released when the breaks lock up. I'm envisioning a situation with high torque from the crank and instant resistance from the drive shaft. Just a guess though. I accept the improbability. Go get laid. Quote Link to comment
datzenmike Posted November 4, 2014 Report Share Posted November 4, 2014 But I've got this to fix things. :) Today I hammered out the ujoint to put the 720 slip yoke onto the 520 one piece. Since the ujoint is bran new, I just reused the one I had put on a few week back at a shop. Ha. However i bent one of the U clips so I'll be getting a new ujoint. Haha Well there's the 720 front spline. So where's the U joint? My guess is the yoke on the 520 driveshaft was cracked and let go. The driveshaft would immediately go off center and the intense vibration shook the tail off the transmission. I see the trans mount stayed in place so the rest of the transmission and the driveshaft swung around in a circle a few times hitting the torsion bar anchor bolt (bending it) and the mainshaft bent about the same time. The driveshaft finally shook itself loose from the 720 spline. Quote Link to comment
flatcat19 Posted November 4, 2014 Report Share Posted November 4, 2014 You might be goddamn right. Quote Link to comment
datzenmike Posted November 4, 2014 Report Share Posted November 4, 2014 I did some rough calculations using some assumptions so if anyone here is an expert at this please correct my poor math. At 50 MPH the driveshaft is spinning at about 3200 RPMs I'm guessing the driveshaft is about 2.5 to 2.75" diameter. The relative centrifugal force can be calculated using... radius X 11.18 X (RPM/1000) 2 I get about 400 gravities. So if just one pound is out of balance that's the same as a 400 pound weight swinging around on the end of the transmission 3,200 times a minute. Again, if someone is more expert at this I have no problem learning more about this event. Quote Link to comment
wayno Posted November 4, 2014 Report Share Posted November 4, 2014 He said there was a few seconds of vibration before all hell broke loose, sounds like as good a guess as any on how it failed, just don't be around when it happens. Lucky shit didn't go threw the floor. Quote Link to comment
datzenmike Posted November 4, 2014 Report Share Posted November 4, 2014 No kidding. That's just a foot and a half from your jewels 1 Quote Link to comment
uberkevin Posted November 4, 2014 Author Report Share Posted November 4, 2014 Now you, DMike probably fucken nailed it.. wow. I'll be taking alot more photos. Just been up for what seems like two days... The 521 is now at Bananas place, lz out and ready for a tranny to be bolted on and put back in... let's hope I kept my stock tranny mount is my big parts box... Gotta change some motor mounts... solder up another radiator... get another fan.... inspect the sound coming from the back wheel.. probably don't need the 4° shims in.. oh it looked like part of the shim bent down into my 3in block... Need sleep... but won't get home tell 630 probably.. This morning when I got home at 7 I turned my truck around by my self... Quote Link to comment
uberkevin Posted November 4, 2014 Author Report Share Posted November 4, 2014 Something did come up into the cab. Took out my shifter knob broke it in some way.. There's no damage to the tank that I seen. Some metal did get ripped from the bottom.. not to important... I don't believe. . Photos soon. Quote Link to comment
datzenmike Posted November 4, 2014 Report Share Posted November 4, 2014 Look at any broken metal parts. If there was a pre existing crack the surface will likely be rusty or in the case of aluminum, dull or dirty. Only the freshly broken metal will be shiny. The drive shaft is only a theory. I figure there was nothing seized looking in the transmission and no reason to 'explode'. I know driveshafts that are even remotely out of balance vibrate like hell. 1 Quote Link to comment
wayno Posted November 4, 2014 Report Share Posted November 4, 2014 As I recall, the driveline was balanced without the yoke, the yoke was put on afterwards, then a clip was lost, so a used clip was used after I suggested using an old one, as I have a couple drivelines with used clips on them, I actually have a couple drivelines with used U-joints on them because I could not get a new one on Sunday, I am now wondering about the advise I gave about that. If that used clip came out..................... :( Quote Link to comment
datzenmike Posted November 4, 2014 Report Share Posted November 4, 2014 Wayno I hear you. I would think it would take a while for the cap to work it's way out and fall off. I mean you really have to hammer them to get them out. A freshly changed one might be slightly easier. Once it started moving the balance would be off and it would vibrate bad. (you would feel it if not hear it above the exhaust) Quote Link to comment
uberkevin Posted November 4, 2014 Author Report Share Posted November 4, 2014 Mhmm... I'm not saying it was the used clip but that is another something that could have made this happen... The only other thing I was thinking about is the bushing that banana and I hammered back in, well that thing doesn't just inch it's way out by its self.. A vibration or something had to have been pushing it out or vibrating it out wards.. After we pushed it in maybe the times that I was drive made it inch back out... or fuck idk.. A number of things it could be.. Quote Link to comment
Fat510 Posted November 4, 2014 Report Share Posted November 4, 2014 Wayno nailed it!!! Don't believe my diff locked up.. maybe for a sec while shit was hitting the fan... floor borad. The rearend is next... If someone was to be as reckless lolz Quote Link to comment
uberkevin Posted November 4, 2014 Author Report Share Posted November 4, 2014 My ujoint was Unfindable.. haha Come to think of it... maybe I did hear the sound of pieces of metal coming apart and hitting shit then a pop/bang kinda sound theeeen. I spun out... Quote Link to comment
uberkevin Posted November 4, 2014 Author Report Share Posted November 4, 2014 ........ I've got this video tthat's I need to post of use messing with the trans... it's actually a pretty funny video. Quote Link to comment
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