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  #151 (permalink)  
Old 10-25-2010, 07:35 PM
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Quote:
Originally Posted by adantessr
I must confess that I did NOT read through all the posts , but I do know that brake drums often have balance weights on them . Is there any possiblility that one of the drums is missing a balance weight ? How about removing the rear drums and putting the wheels on without them and putting the rear axle on stands and see if the vibration is gone . Of course you won't be able to apply the brakes , just have to shut it off in gear . I think it would be worth a try .
Yup, could be a brake drum weight missing. Or it could be a bent axle or axle flange. Jack it up and run it on jack stands. Look for wheel wobble. On those older trucks if you over load them the axle housing can flex causing the axles and or flanges to bend especially when you hit a pot hole or a rail road track. Seen it many times.

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  #152 (permalink)  
Old 10-25-2010, 07:43 PM
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Quote:
Originally Posted by Chris Kemp
Yup, could be a brake drum weight missing. Or it could be a bent axle or axle flange. Jack it up and run it on jack stands. Look for wheel wobble. On those older trucks if you over load them the axle housing can flex causing the axles and or flanges to bend especially when you hit a pot hole or a rail road track. Seen it many times.


I said that at the beginning of this thread.. They shot that down real fast..
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  #153 (permalink)  
Old 10-25-2010, 08:18 PM
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[QUOTE=latech]
Quote:
Originally Posted by tab
ya know, nobody really reads the posts, they just say what they were going to say....

I spent 30 minutes reading your post after I saw how long it was running [ Quote = tab] and other morons keep telling me to change my driveline angles even though they are factory set and equal and opposite

The factory never set angle for the trans you are running in your truck.
how does the angle of the trans change when it's bolted FLAT to the orig bellhousing? BTW: i wouldn't call them MORONS if they wouldn't have started dissing me about the $^^$%$!! driveline angles. THE DRIVELINE ANGLES DON'T CHANGE. THE ONLY ANGLE THAT CHANGED SLIGHTLY IS THE DRIVESHAFT ANGLE BUT SINCE THE NEW TRANS IS ONLY 3" LONGER THAN THE OLD TRANS, THAT ANGLE IS INCONSEQUENTIAL. FURTHERMORE (AND I'VE SAID THIS SO MANY TIMES THAT MY FINGERS ARE GETTING TIRED) THE VIBES CHANGE FOR THE BETTER WHEN I ADD WEIGHT TO THE DRIVESHAFT OPPOSITE THE WEIGHT THAT THEY PUT ON THE SHAFT. ..... AGAIN; THERE MAY BE ANOTHER VIBE ISSUE BUT CLEARLY THE DRIVESHAFT IS A STRONG SUSPECT....

i wanted to rule out the driveshaft after it was balanced thrice but AGAIN, the weight of the evidence suggests that there is still a balance problem. every time it was rebalanced, they moved the weights and each time i put weight opposite theirs the vibes get better. when i talked to Driveshaft Specialists in San Antonio, the owner told me that his shop sold his Axiline balancer and he bought a stewart warner balancer because he believes that it's a better machine. consequently, a good portion of his business is re-balancing shafts that have been 'balanced' by other shops. my guess is that there are a lot of poorly balanced driveshafts out there. probably because of my 4.56 gear and long shaft, my imbalance is more noticeable.... having said this, it's possible that after i get this new shaft, i'll still have a vibe, somewhere but the main vibe coming through my shifter should be solved. that's the hope anyway....
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  #154 (permalink)  
Old 10-25-2010, 08:30 PM
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Quote:
Originally Posted by Chris Kemp
Yup, could be a brake drum weight missing. Or it could be a bent axle or axle flange. Jack it up and run it on jack stands. Look for wheel wobble. On those older trucks if you over load them the axle housing can flex causing the axles and or flanges to bend especially when you hit a pot hole or a rail road track. Seen it many times.
i'll look for a missing brake drum weight. that's not a bad suggestion but the vibes wouldn't be lessened by adding weight to the driveshaft. this however could be causing a secondary vibe. when i got this truck back from the bonehead who installed my trans, it had many vibration problems. the trans wasn't bolted secure to the belhousing because he used hex-head bolts instead of allen-head bolts! the flanges on the trans didn't leave enough room to get a wrench on them. the driveshaft the moron built was visually out-of-phase and the bolts he used for the trans mount were too small and wouldn't tighten. the trans mount he made was pulling on the trans. (i modified it so now it's fine) and the driveshaft wasn't balanced. before i knew it was out-of-phase, we sent the shaft to a place in dallas to be balanced. the MORONS there balanced the out-of-phase shaft!!! i called them and verified this...

so this has been an insane saga and a learning experience. looks like a guy with a degree in fine arts (me) knows more about auto mechanics than the auto mechanics.

i did jack it up and run it, several times. the axle housing is built like a tank. it's a 3/4 ton 62 and you'd have to overload it to such an extent that the 235 would give out before that axle housing would flex. if that were the case, i'd have broken something in the rearend long ago.

Last edited by tab; 10-25-2010 at 08:43 PM.
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  #155 (permalink)  
Old 10-25-2010, 08:31 PM
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I think i am going to try doing this in my threads when I hear what I don't want to. I am going to start yelling and screaming at people that are trying to help me. WELL YOU KNOW WHAT DUDE, YOU HAVE WENT ON FOR 11 PAGES AND THE ONLY THING YOU HAVE DONE IS CLAMPED WEIGHTS ON THE DAMN SHAFT. "ok its better clamped here tomorrow I will clamp it over there". If you don't read what you want to hear don't start yelling and screaming at the people that are trying to help you, so what if you are hearing the same thing over and over, you know what so are we with clamping weights on. I hope your new drive shaft takes care of your problem so you will have this problem solved and stop degrading the people trying to help you.
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  #156 (permalink)  
Old 10-25-2010, 08:39 PM
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my comments about MORONS are directed at the moron here who was dissing me. many of the "helpful" comments are not helpful at all, like the driveline angle BS. that's what started a HUGE argument at another site. they began dissing me because i told them that THE ANGLES DON'T CHANGE BY INSTALLING A NEW TRANS. some folks still don't understand that. even when told, they get all pissy because i didn't take their advice and start cutting up my motor mounts and shim my rear end to change the angles that don't need to be changed. it's freaking me out. then i come here and get he same idiocy and one moron disses me because i didn't take the moron advice from the other morons at the other site.
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  #157 (permalink)  
Old 10-25-2010, 08:49 PM
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Maybe instead of turning this into a pissing match,we should wait and see what the new shaft does. Maybe the problem will be fixed and everyone will be happy.
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  #158 (permalink)  
Old 10-25-2010, 08:50 PM
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You Said:
it had many vibration problems. the trans wasn't bolted secure to the belhousing!

"Could have damaged pilot bushing"


You Said:
the driveshaft the moron built was visually out-of-phase.

"explain out of phase"


You Said:
looks like a guy with a degree in fine arts (me) knows more about auto mechanics than the auto mechanics.

Sounds like you may be a "legend"in your own mind, you will never "know it all"no matter what you may think and some "dumb moron" may have done told you what your problem is but you want it to be the "driveshaft"
so happy hunting
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  #159 (permalink)  
Old 10-25-2010, 08:52 PM
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since this thread has degraded to non tech finger pointing, it has been locked

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