Broken Dana 70 Axle with street tires - Competition Diesel.Com

*Big Blue24* · 12-10-2011, 05:35 AM

My 95' 2wd ate the driver's side axle tonight at the track. It broke right at the splines in the side gear at the carrier.

What's interesting is that I was not running slicks, just some well-worn 33" Wrangler MTR's. The track was slick and it hopped a little at the line, it probably broke around the 330' mark on my 4th or 5th attempt to pedal it.

All I can say is the driver of that yellow Honda was lucky I didn't have two good axles...

http://www.youtube.com/watch?v=UZ4nEl6aWig

*Big Blue24* · 12-10-2011, 06:10 AM

Here,
Let's try the video link one more time:

http://www.youtube.com/watch?v=UZ4nEl6aWig

dunndealin · 12-10-2011, 06:58 AM

ummm yea that ricer was breakfast if u would have had both sides pulling!!!

cumminsmannow · 12-10-2011, 07:41 AM

Whats with him backing up and pulling forward like 3-4 times. Did he think he was staging too deep or what?

NickTF · 12-10-2011, 09:45 AM

Sorry to hear of the breakage. On and off throttle much like wheel hop is really hard on stuff.

*Krazeeun* · 12-10-2011, 09:58 AM

shock load equals parts explode

lorendiesel5.9 · 12-10-2011, 10:47 AM

Man wish I knew you were racing last night. I pulled into vegas about 8pm last night.

YOUNG GUNS15 · 12-10-2011, 07:58 PM

Glad i have a dana 80

*JQmile* · 12-10-2011, 10:18 PM

I've had some people warn me about my 70....now you got me worried :P

*Big Blue24* · 12-11-2011, 12:21 AM

Quote:

Originally Posted by JQmile

I've had some people warn me about my 70....now you got me worried :P

The more times I watch the video, the more I don't think it was excessive hop at the starting line. I think it broke more like 330' out when it wasn't hopping too much, just spinning so I lifted a few times.

I guess my next step is to carefully examine the other axle and see if they were starting twist before this one let go.

I admit, I didn't think it was possible to break a Dana 70 at the super smooth drag strip with street tires. The track was cold, probably 50*F with air temp in the mid 40's so traction was non-existent.

I know sled pullers won't even waste their time with the Dana 70, so it's no special feat to break one. I just didn't think it was possible with my lighter weight setup.

*JQmile* · 12-11-2011, 12:51 AM

Quote:

Originally Posted by Big Blue24

I know sled pullers won't even waste their time with the Dana 70, so it's no special feat to break one. I just didn't think it was possible with my lighter weight setup.

x2....and I am launching off the transbrake....oh well, all I can do is try.

Stingpuller · 12-11-2011, 06:45 AM

When I was racing cars the only time I ever broke a axle was when I had street tires on the car. It was the same deal, It spun and snap went the axle. It had strange axles so they were not stock. It happened twice with street tires and never with race tires. Street tires I mean BFGoodrich not a street race type tire. If you run good tires and keep it from shaking/bounching I bet you will be fine. Jeff

Toby Cashion · 12-11-2011, 01:56 PM

I have 2 axle shafts out of a 1st gen dana 70 i would be willing to donate. Dont no the spline count yet, there from a 89 cummins/727/3.08 dana 70.

12vriviera · 12-11-2011, 02:06 PM

makes me worry about my 40 year old buick 12 bolt now!!

*JQmile* · 12-11-2011, 02:09 PM

Quote:

Originally Posted by Toby Cashion

I have 2 axle shafts out of a 1st gen dana 70 i would be willing to donate. Dont no the spline count yet, there from a 89 cummins/727/3.08 dana 70.

I think those are a different spline...

ARS267 · 12-12-2011, 05:02 PM

I have some 32 spline dana 70 shafts. there yours if you want them, just pay the shipping.

Dazed&Confused · 12-12-2011, 06:14 PM

Quote:

Originally Posted by Toby Cashion

I have 2 axle shafts out of a 1st gen dana 70 i would be willing to donate. Dont no the spline count yet, there from a 89 cummins/727/3.08 dana 70.

That's a D71 with 35 splines or should be. Not sure how different they are from the D70 I haven't pulled them and laid them side by side.

oldestof11 · 12-12-2011, 07:17 PM

Studs: 35
Bolts: 32

This is for 1st Gens only. I cannot speak for 2nd gens.

Lance · 12-17-2011, 12:18 AM

I broke a shaft just like that on mine too. So I upgraded to 35 spline Yukon shafts and a 35 spline detroit

12-10-2011, 05:35 AM	#1
Big Blue24 Name: Big Blue24 Title: Comp Diesel Sponsor Status: Not Here Join Date: Jan 2008 Location: Cedar City, UT Member`s Gallery Posts: 6,310	Broken Dana 70 Axle with street tires My 95' 2wd ate the driver's side axle tonight at the track. It broke right at the splines in the side gear at the carrier. What's interesting is that I was not running slicks, just some well-worn 33" Wrangler MTR's. The track was slick and it hopped a little at the line, it probably broke around the 330' mark on my 4th or 5th attempt to pedal it. All I can say is the driver of that yellow Honda was lucky I didn't have two good axles... http://www.youtube.com/watch?v=UZ4nEl6aWig __________________ 95' 2wd Junker Drag Truck 1502 HP Fuel-Only 12mm P7100 Pump SXE 472 over GTX55 116mm OEM 12v Block

12-10-2011, 07:41 AM	#4
cumminsmannow Name: cumminsmannow Title: lost Status: Not Here Join Date: Apr 2009 Member`s Gallery Posts: 303	Whats with him backing up and pulling forward like 3-4 times. Did he think he was staging too deep or what? __________________ 2006 megacab 2500 stock tow rig 2005 dodge ram 3500 cummins, 2.8 class, missing cp3 70lpm sticks, smarty ssr (kinda) 766/1744. huge thanks to JAGS PRO TRUCK SHOP for all the help!

12-10-2011, 09:45 AM	#5
NickTF Name: NickTF Title: Single turbo turd. Status: Not Here Join Date: Jun 2007 Location: Laurel, DE Member`s Gallery Posts: 5,887	Sorry to hear of the breakage. On and off throttle much like wheel hop is really hard on stuff. __________________ 97 12v sold. 2015 Power Wagon DD!

12-10-2011, 09:58 AM	#6
Krazeeun Name: Krazeeun Title: Hardway Performance Status: Not Here Join Date: Feb 2008 Location: Fort Walton Beach, FL Member`s Gallery Posts: 2,369	shock load equals parts explode __________________ RYAN MILLIKEN I WILL NOT KEEP CALM I WILL RAISE HELL AND BREAK ** '14 Ram SCSB Pro-Street "MiniWheat" - 5.299ET@136.49MPH/4515# '66 Nova X275 4.289@170.8/3430# '69 Nova X275 .... still on pro jacks KNOWLEDGE IS POWER**

12-10-2011, 10:47 AM	#7
lorendiesel5.9 Name: lorendiesel5.9 Title: OG Hunnybadger Status: Not Here Join Date: Apr 2009 Location: NE IA or the lower 48 Member`s Gallery Posts: 3,909	Man wish I knew you were racing last night. I pulled into vegas about 8pm last night. __________________ Rest in Peace Dex aka BFD99 6/2/12 97 #12vqclbmafia slipping auto 00 Pete 378 12.7 Detroit 10spd 03 Pete 379 6NZ Caterpillar 18spd

12-10-2011, 06:58 AM	#3
dunndealin Name: dunndealin Title: Diesel Enthusiast Status: Not Here Join Date: Jul 2010 Location: Sanford, FL Member`s Gallery Posts: 135	ummm yea that ricer was breakfast if u would have had both sides pulling!!!

12-10-2011, 07:58 PM	#8
YOUNG GUNS15 Name: YOUNG GUNS15 Title: Im AWESOME!!!! Status: Not Here Join Date: Sep 2009 Location: Utah Member`s Gallery Posts: 7,346	Glad i have a dana 80 __________________ Spence -1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O -2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp

12-10-2011, 10:18 PM	#9
JQmile Name: JQmile Title: Comp Diesel Sponsor Status: Not Here Join Date: Nov 2006 Member`s Gallery Posts: 6,976	I've had some people warn me about my 70....now you got me worried :P __________________ 89 Dodge 972rwhp on the hose, still a VE!

12-11-2011, 06:45 AM	#12
Stingpuller Name: Stingpuller Title: Too Much Time Status: Not Here Join Date: Feb 2007 Location: central Ohio Member`s Gallery Posts: 1,166	Axles When I was racing cars the only time I ever broke a axle was when I had street tires on the car. It was the same deal, It spun and snap went the axle. It had strange axles so they were not stock. It happened twice with street tires and never with race tires. Street tires I mean BFGoodrich not a street race type tire. If you run good tires and keep it from shaking/bounching I bet you will be fine. Jeff __________________ 2007 GMC C4500 Regency Western Hauler and 235" POWERFLOW Dragster, Powerflow exhaust, 80mm Fleece turbo, Fleece injectors, On Track Auto front mount CP3, SoCal Diesel, Hughes powerglide, PTC converter, Nytrex nitrous,Isspro,FueLabs, Mike's Race Wiring, New Era Diesel, Hamilton Cam and all the guys at the shop

12-11-2011, 01:56 PM	#13
Toby Cashion Name: Toby Cashion Title: diesel racer Status: Not Here Join Date: Aug 2010 Location: Rio Vista TX Member`s Gallery Posts: 210	I have 2 axle shafts out of a 1st gen dana 70 i would be willing to donate. Dont no the spline count yet, there from a 89 cummins/727/3.08 dana 70. __________________ 2010 6.4 King Ranch

12-11-2011, 02:06 PM	#14
12vriviera Name: 12vriviera Title: That Guy with that car Status: Not Here Join Date: Mar 2009 Location: north texas Member`s Gallery Posts: 6,846	makes me worry about my 40 year old buick 12 bolt now!! __________________ Brandon Carr. Owner of the 24V RIV Competition Diesel.Com - Bringing The BEST Together I am a pushover https://www.facebook.com/#!/24VRIVIERA

12-12-2011, 05:02 PM	#16
ARS267 Name: ARS267 Title: Green Behind the Ears Status: Not Here Join Date: Nov 2008 Member`s Gallery Posts: 61	I have some 32 spline dana 70 shafts. there yours if you want them, just pay the shipping.

12-12-2011, 07:17 PM	#18
oldestof11 Name: oldestof11 Title: Drag racer Status: Not Here Join Date: Jul 2007 Location: Dixon, IL Member`s Gallery Posts: 9,084	Studs: 35 Bolts: 32 This is for 1st Gens only. I cannot speak for 2nd gens. __________________ Jon

12-17-2011, 12:18 AM	#19
Lance Name: Lance Title: Loner Status: Not Here Join Date: Nov 2007 Location: Albuquerque Member`s Gallery Posts: 293	I broke a shaft just like that on mine too. So I upgraded to 35 spline Yukon shafts and a 35 spline detroit __________________ 95 2500, 100 plate, 3800 washer mod, BHAF, Auto meter, TC lockup switch, Goerend trans, New Era 435s, water/meth, 6 inch lift, DT track bar, Irok Radial 41s with Staun beadlocks, Atlas springs, 4.10s, Detroit in rear, Lock right in the front