Driveshaft breakage problems - Pirate4x4.Com : 4x4 and Off-Road Forum

lostcreek18 · 07-21-2007, 06:53 PM

So I've broken a few toyota driveshaft u-joints lately and I'm looking for a couple ways to upgrade.

Here's my set-up:
91 toyota pickup, chevy tbi 350 engine with th350 tranny mated to toyota dual cases with 4.7's in the rear case. I'm running a front driveshaft that's been lengthened and stock toyota u-joints. For the front I have a stock toyota front CV welded to square.

I broke a rear driveshaft joint a month ago and blew out a cap on my front joint at the same time. Just today I put a new cap in my front cv because I threw another cap after the snap ring flew off a few days ago so I replaced the snap rings with full circles snap rings. Today the joint broke in half. It always seems to be the u-joint at the axle end of the CV(if that makes any sense) I'm wondering if running a single joint on both ends of my front shaft would be better than the cv in there? The truck doesn't see any street time so vibrations are not a big deal. Anyone have any input on this?

Turtle Bite · 07-21-2007, 07:19 PM

I have broken quite a few toyota joints, (4.3l, 40's) and i have found that welding the cap in helps alot. If your drivelines are at a severe angle and axlewrap or the suspension dropping out makes the angle worse, try making your pinion angle a less severe and adding a limit strap. That helped my rear out alot. There is also a new Trail Gear U-joint that has a beefier center for $40 that I want to try.

lostcreek18 · 07-21-2007, 09:25 PM

Ya I put those full circle snap rings on so I don't throw caps anymore but I did think about welding them.

As for the pinion angle I'm running a high pinion so my angle is almost nothing. The shafts don't bind at all at full droop or anything. I looked into the heavy duty creeper joints that trail gear has but I wanted to try the single joint front driveshaft idea first

metchosin joe · 07-21-2007, 09:27 PM

got much axle wrap? traction bar would take some stress away

montezuma · 07-22-2007, 09:04 AM

Where are you finding the full circle snap rings for the Yota U-Joints and CV's?

lostcreek18 · 07-22-2007, 09:51 AM

My front isn't getting any axle wrap so I don't think that is a problem.

I just went to a hardware store and took a joint with me and found some full circle snap rings. I'm pretty sure they are the 1" ones.

intheworks · 07-23-2007, 10:12 AM

i got toyota driveshafts front and rear with a big ol bitch 4runner and dana 60's

since i put creeper joints f+r from tral-gear i can break axle shafts before the driveshafts give.

intheworks · 07-23-2007, 10:13 AM

Quote:

Originally Posted by Turtle Bite

I have broken quite a few toyota joints, (4.3l, 40's) and i have found that welding the cap in helps alot. If your drivelines are at a severe angle and axlewrap or the suspension dropping out makes the angle worse, try making your pinion angle a less severe and adding a limit strap. That helped my rear out alot. There is also a new Trail Gear U-joint that has a beefier center for $40 that I want to try.

thats what i do too! tack weld the caps

lostcreek18 · 07-24-2007, 05:47 PM

Quote:

Originally Posted by intheworks

i got toyota driveshafts front and rear with a big ol bitch 4runner and dana 60's

since i put creeper joints f+r from tral-gear i can break axle shafts before the driveshafts give.

Are you running chromo shafts up front?

07-21-2007, 06:53 PM	#1 (permalink)
lostcreek18 Registered User Join Date: Nov 2004 Member # 37913 Location: Gresham, OR Posts: 236	Driveshaft breakage problems So I've broken a few toyota driveshaft u-joints lately and I'm looking for a couple ways to upgrade. Here's my set-up: 91 toyota pickup, chevy tbi 350 engine with th350 tranny mated to toyota dual cases with 4.7's in the rear case. I'm running a front driveshaft that's been lengthened and stock toyota u-joints. For the front I have a stock toyota front CV welded to square. I broke a rear driveshaft joint a month ago and blew out a cap on my front joint at the same time. Just today I put a new cap in my front cv because I threw another cap after the snap ring flew off a few days ago so I replaced the snap rings with full circles snap rings. Today the joint broke in half. It always seems to be the u-joint at the axle end of the CV(if that makes any sense) I'm wondering if running a single joint on both ends of my front shaft would be better than the cv in there? The truck doesn't see any street time so vibrations are not a big deal. Anyone have any input on this? __________________ 91 toyota, 35 spline 60's front and rear, tbi 350, th350, np231 with 300 behind it, waggys up front, 4 link and air shocks out back, 42 Iroks and some more stuff, I forget 95 Dodge 2500 cummins

07-21-2007, 07:19 PM	#2 (permalink)
Turtle Bite Registered User Join Date: Feb 2004 Member # 27879 Location: West Richland, WA Posts: 685	I have broken quite a few toyota joints, (4.3l, 40's) and i have found that welding the cap in helps alot. If your drivelines are at a severe angle and axlewrap or the suspension dropping out makes the angle worse, try making your pinion angle a less severe and adding a limit strap. That helped my rear out alot. There is also a new Trail Gear U-joint that has a beefier center for $40 that I want to try. __________________ 83' Toy, tubed, swapped, crawlered and chromoed

07-21-2007, 09:25 PM	#3 (permalink)
lostcreek18 Registered User Join Date: Nov 2004 Member # 37913 Location: Gresham, OR Posts: 236	Ya I put those full circle snap rings on so I don't throw caps anymore but I did think about welding them. As for the pinion angle I'm running a high pinion so my angle is almost nothing. The shafts don't bind at all at full droop or anything. I looked into the heavy duty creeper joints that trail gear has but I wanted to try the single joint front driveshaft idea first __________________ 91 toyota, 35 spline 60's front and rear, tbi 350, th350, np231 with 300 behind it, waggys up front, 4 link and air shocks out back, 42 Iroks and some more stuff, I forget 95 Dodge 2500 cummins

07-21-2007, 09:27 PM	#4 (permalink)
metchosin joe Wheeler Join Date: Oct 2004 Member # 37213 Location: wet coast of canada Posts: 424	got much axle wrap? traction bar would take some stress away __________________ Toyota with Stickies, links, beverage holder and other accessories

07-22-2007, 09:04 AM	#5 (permalink)
montezuma Rock God Join Date: Feb 2003 Member # 16789 Location: Seattle Wa. Posts: 2,177	Where are you finding the full circle snap rings for the Yota U-Joints and CV's? __________________ The Parts Pimp. Wanted! Solid axle steering boxes from 1979-1985 toyota pick-ups and four runners. PM me for details. Wanted! Power assist Rams and Valves from 75-77 Ford F-250's. PM me for details. $78 for Toyota front knuckle rebuild kits DELIVERED!! PM me for details.

07-22-2007, 09:51 AM	#6 (permalink)
lostcreek18 Registered User Join Date: Nov 2004 Member # 37913 Location: Gresham, OR Posts: 236	My front isn't getting any axle wrap so I don't think that is a problem. I just went to a hardware store and took a joint with me and found some full circle snap rings. I'm pretty sure they are the 1" ones. __________________ 91 toyota, 35 spline 60's front and rear, tbi 350, th350, np231 with 300 behind it, waggys up front, 4 link and air shocks out back, 42 Iroks and some more stuff, I forget 95 Dodge 2500 cummins

07-23-2007, 10:12 AM	#7 (permalink)
intheworks Registered User Join Date: Oct 2006 Member # 80590 Location: va Posts: 633	i got toyota driveshafts front and rear with a big ol bitch 4runner and dana 60's since i put creeper joints f+r from tral-gear i can break axle shafts before the driveshafts give.

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