'79 242 2 pc. Driveshaft Issues
#1
'79 242 2 pc. Driveshaft Issues
Hello everyone,
This is a great site. I've been learning so much I've decided to register and become a member.
Now down to business. I have owned my '79 242 for over half a decade now and, since I became the proud owner I have had one major issue plaguing it.
*The owner before me managed to break the drive shaft at the first u-joint mount. He had it welded back and I have had it rebalanced and installed a new carrier bearing and support since. She still vibrates badly which has caused all kinds of havoc to the transmission. I don't think I will ever find another drive shaft. None online for sale. However the junk yard down the road has half a dozen old 240's with single piece drive shafts. I looked under them the other day and noticed the mounts are very different. Does anyone have any thoughts on switching to a 1 piece they would share? Maybe different lengths or would the output shaft from the transmission be the same diameter as the 86-88sh.*
Any thoughts would be greatly appreciated.
*If someone out there would sell me a two piece drive shaft. I would be very happy.*
79 GT
This is a great site. I've been learning so much I've decided to register and become a member.
Now down to business. I have owned my '79 242 for over half a decade now and, since I became the proud owner I have had one major issue plaguing it.
*The owner before me managed to break the drive shaft at the first u-joint mount. He had it welded back and I have had it rebalanced and installed a new carrier bearing and support since. She still vibrates badly which has caused all kinds of havoc to the transmission. I don't think I will ever find another drive shaft. None online for sale. However the junk yard down the road has half a dozen old 240's with single piece drive shafts. I looked under them the other day and noticed the mounts are very different. Does anyone have any thoughts on switching to a 1 piece they would share? Maybe different lengths or would the output shaft from the transmission be the same diameter as the 86-88sh.*
Any thoughts would be greatly appreciated.
*If someone out there would sell me a two piece drive shaft. I would be very happy.*
79 GT
#3
#4
I don't know the difference between a BW and AW, but I do know I have an M46 trans 4+OD. Parts are being sourced to replace the seals and gaskets the drive shaft has vibrated loose. I plan on having the trans done this coming weekend but, I sure hate to waste my time just for it to happen again. *I'm holding my breath that ACT1292 has the drive shaft I have been looking for since day 1.*
#5
early volvo automatics were BW55 or whatever, later ones are AW70/71. Borg-warner, and Aisin-Warner (Toyota's transmission factory which started as a borg-warner joint operation).
anyways, if you find a junkyard drive shafts, make sure they are off a 240 from ANY year with the M46 4+OD, and you should be good to go. There's a volvo parts dismantler in Rancho Cordoba, California (near Sacramento) who probably has these in stock.
anyways, if you find a junkyard drive shafts, make sure they are off a 240 from ANY year with the M46 4+OD, and you should be good to go. There's a volvo parts dismantler in Rancho Cordoba, California (near Sacramento) who probably has these in stock.
#7
Hello everyone,
This is a great site. I've been learning so much I've decided to register and become a member.
Now down to business. I have owned my '79 242 for over half a decade now and, since I became the proud owner I have had one major issue plaguing it.
*The owner before me managed to break the drive shaft at the first u-joint mount. He had it welded back and I have had it rebalanced and installed a new carrier bearing and support since. She still vibrates badly which has caused all kinds of havoc to the transmission. I don't think I will ever find another drive shaft. None online for sale. However the junk yard down the road has half a dozen old 240's with single piece drive shafts. I looked under them the other day and noticed the mounts are very different. Does anyone have any thoughts on switching to a 1 piece they would share? Maybe different lengths or would the output shaft from the transmission be the same diameter as the 86-88sh.*
Any thoughts would be greatly appreciated.
*If someone out there would sell me a two piece drive shaft. I would be very happy.*
79 GT
This is a great site. I've been learning so much I've decided to register and become a member.
Now down to business. I have owned my '79 242 for over half a decade now and, since I became the proud owner I have had one major issue plaguing it.
*The owner before me managed to break the drive shaft at the first u-joint mount. He had it welded back and I have had it rebalanced and installed a new carrier bearing and support since. She still vibrates badly which has caused all kinds of havoc to the transmission. I don't think I will ever find another drive shaft. None online for sale. However the junk yard down the road has half a dozen old 240's with single piece drive shafts. I looked under them the other day and noticed the mounts are very different. Does anyone have any thoughts on switching to a 1 piece they would share? Maybe different lengths or would the output shaft from the transmission be the same diameter as the 86-88sh.*
Any thoughts would be greatly appreciated.
*If someone out there would sell me a two piece drive shaft. I would be very happy.*
79 GT
If you find a donor car with a M46 Transmission, take the whole drive shaft. It should bolt right in place... That will be all she wrote.
Side note: the Windsor location pick-n-pull here in Northern CA has right now, several 240's with M46 transmission if you are near northern CA...
Hope this helps
Last edited by Bumblebeeman; 09-05-2014 at 02:05 PM.
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