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Broken Rearend update #855335
11/16/10 04:15 PM
11/16/10 04:15 PM
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Indy
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joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
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Let me start by stopping old jimmy from making any broken rearend jokes.... Shut Up Jimmy...Ok


The last pass of the year in the car was short lived becasue of what was believed to be me destroying the eaton tru-trac that I had. Never in a million years would I have thought this is what I was going to find when I took her apart.

6304597-axle2sm.pdf (471 downloads)
Re: Broken Rearend update [Re: joshking440] #855336
11/16/10 04:41 PM
11/16/10 04:41 PM
Joined: Feb 2007
Posts: 5,080
organ
M
maximum entropy Offline
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maximum entropy  Offline
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M

Joined: Feb 2007
Posts: 5,080
organ
wow. nothing left. not even a picture!


for what is the good life if not doing things thoughtfully?
Re: Broken Rearend update [Re: joshking440] #855337
11/16/10 04:42 PM
11/16/10 04:42 PM
Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto Offline
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Plymouth Meeting, PA
somebody stole the stuff right ou of it??


BB, TT5,Procharged 3300lb Street Car 4.79/154
Re: Broken Rearend update [Re: bigtimeauto] #855338
11/16/10 04:54 PM
11/16/10 04:54 PM
Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
WILD BILL Offline
Senior Member of the Junior Dragster Club
WILD BILL  Offline
Senior Member of the Junior Dragster Club

Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
Man


Someone really broke it off in your rear



Re: Broken Rearend update [Re: WILD BILL] #855339
11/16/10 04:56 PM
11/16/10 04:56 PM
Joined: Aug 2008
Posts: 4,072
Mo.
racerx Offline
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racerx  Offline
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Posts: 4,072
Mo.
Quote:

Man


Someone really broke it off in your rear






Re: Broken Rearend update [Re: joshking440] #855340
11/16/10 04:59 PM
11/16/10 04:59 PM
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
S
Sport440 Offline
master
Sport440  Offline
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S

Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Who,s shaft was that broke in your rear. Moser,etc.

Were there any apparent flaws in the break area? mike

Last edited by Sport440; 11/16/10 05:15 PM.
Re: Broken Rearend update [Re: Sport440] #855341
11/16/10 05:11 PM
11/16/10 05:11 PM
Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto Offline
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Plymouth Meeting, PA
push this button:



BB, TT5,Procharged 3300lb Street Car 4.79/154
Re: Broken Rearend update [Re: bigtimeauto] #855342
11/16/10 05:15 PM
11/16/10 05:15 PM
Joined: Jan 2003
Posts: 965
Odessa, Fl
B
blowndart Offline
super stock
blowndart  Offline
super stock
B

Joined: Jan 2003
Posts: 965
Odessa, Fl
Those drag radials can be quite hard on parts when they hook. Time for bigger axles, if those aren't 40's already.

Re: Broken Rearend update [Re: blowndart] #855343
11/16/10 05:18 PM
11/16/10 05:18 PM
Joined: Jan 2003
Posts: 945
La Vernia, Texas
Pat7272 Offline
super stock
Pat7272  Offline
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Posts: 945
La Vernia, Texas
Wow! Can you tell if the tru-trac is hurt too?

Re: Broken Rearend update [Re: Pat7272] #855344
11/16/10 06:05 PM
11/16/10 06:05 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
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J

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Posts: 4,590
Indy
I feel like a newb!!!! Our internet went down as I was trying to get this done....




Re: Broken Rearend update [Re: Sport440] #855345
11/16/10 06:08 PM
11/16/10 06:08 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
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J

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Indy
Quote:

Who,s shaft was that broke in your rear. Moser,etc.

Were there any apparent flaws in the break area? mike




Its a strange 35 spline axle. I dont see any apparant flaws, its really twisted up bad

Re: Broken Rearend update [Re: joshking440] #855346
11/16/10 06:11 PM
11/16/10 06:11 PM
Joined: Aug 2003
Posts: 43,232
Bend,OR USA
C
Cab_Burge Offline
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Joined: Aug 2003
Posts: 43,232
Bend,OR USA
I'll bet that it is the left side(drivers side) axle, is it


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Broken Rearend update [Re: Cab_Burge] #855347
11/16/10 06:12 PM
11/16/10 06:12 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
Lunch is on me!
J

Joined: Oct 2006
Posts: 4,590
Indy
yep

Re: Broken Rearend update [Re: joshking440] #855348
11/16/10 06:14 PM
11/16/10 06:14 PM
Joined: Aug 2008
Posts: 4,072
Mo.
racerx Offline
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Mo.
Damum

Re: Broken Rearend update [Re: racerx] #855349
11/16/10 06:30 PM
11/16/10 06:30 PM
Joined: May 2004
Posts: 855
Brisbane Australia
5
572B1 Online content
super stock
572B1  Online Content
super stock
5

Joined: May 2004
Posts: 855
Brisbane Australia
What axles Josh, hytuff or street axles.

Re: Broken Rearend update [Re: 572B1] #855350
11/16/10 07:15 PM
11/16/10 07:15 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
Lunch is on me!
J

Joined: Oct 2006
Posts: 4,590
Indy
s/st

Re: Broken Rearend update [Re: joshking440] #855351
11/16/10 07:19 PM
11/16/10 07:19 PM
Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto Offline
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Quote:

s/st




Your lucky!


BB, TT5,Procharged 3300lb Street Car 4.79/154
Re: Broken Rearend update [Re: bigtimeauto] #855352
11/16/10 07:33 PM
11/16/10 07:33 PM
Joined: Jan 2003
Posts: 945
La Vernia, Texas
Pat7272 Offline
super stock
Pat7272  Offline
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Posts: 945
La Vernia, Texas
Do you think the axles would have lasted long if not launching off the transbrake?

Re: Broken Rearend update [Re: Pat7272] #855353
11/16/10 08:22 PM
11/16/10 08:22 PM
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
D
dusturbd340W5 Offline
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D

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Kissimmee Fl.
wow I am running 35 spline S/ST leaving off the brake but so far mine have held up I am at 2980 lbs about 600 hp


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
Re: Broken Rearend update [Re: joshking440] #855354
11/16/10 08:54 PM
11/16/10 08:54 PM
Joined: Mar 2006
Posts: 5,067
Orlando Florida
blown572dart Offline
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blown572dart  Offline
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Orlando Florida
Quote:

Shut Up Jimmy........







Quote:

really broke it off in your rear






Re: Broken Rearend update [Re: blown572dart] #855355
11/16/10 09:19 PM
11/16/10 09:19 PM
Joined: Jan 2003
Posts: 8,028
Tulsa OK
Bad340fish Offline
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Tulsa OK
The only time I can think that a tru-trac was a good thing to have. That thing would have been a handfull if it had a spool in it and kept power to the other tire.


68 Barracuda Formula S 340
Re: Broken Rearend update [Re: dusturbd340W5] #855356
11/16/10 10:06 PM
11/16/10 10:06 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
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J

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Quote:

wow I am running 35 spline S/ST leaving off the brake but so far mine have held up I am at 2980 lbs about 600 hp




Im sure you are fine... Im 3300lbs leaving off the brake, it didnt brake till almost 60' out, when the car was at 30 lbs of boost....

Re: Broken Rearend update [Re: Bad340fish] #855357
11/16/10 10:07 PM
11/16/10 10:07 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
Lunch is on me!
J

Joined: Oct 2006
Posts: 4,590
Indy
Quote:

The only time I can think that a tru-trac was a good thing to have. That thing would have been a handfull if it had a spool in it and kept power to the other tire.





Re: Broken Rearend update [Re: joshking440] #855358
11/16/10 10:07 PM
11/16/10 10:07 PM
Joined: Jan 2003
Posts: 8,028
Tulsa OK
Bad340fish Offline
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Bad340fish  Offline
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Posts: 8,028
Tulsa OK
Quote:

Quote:

wow I am running 35 spline S/ST leaving off the brake but so far mine have held up I am at 2980 lbs about 600 hp




Im sure you are fine... Im 3300lbs leaving off the brake, it didnt brake till almost 60' out, when the car was at 30 lbs of boost....




And god knows how many ft lbs

Last edited by Bad340fish; 11/16/10 10:08 PM.

68 Barracuda Formula S 340
Re: Broken Rearend update [Re: Bad340fish] #855359
11/16/10 10:18 PM
11/16/10 10:18 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
Lunch is on me!
J

Joined: Oct 2006
Posts: 4,590
Indy
over 1000!

Re: Broken Rearend update [Re: joshking440] #855360
11/16/10 10:19 PM
11/16/10 10:19 PM
Joined: Mar 2006
Posts: 5,067
Orlando Florida
blown572dart Offline
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blown572dart  Offline
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Posts: 5,067
Orlando Florida

Re: Broken Rearend update [Re: blown572dart] #855361
11/16/10 10:22 PM
11/16/10 10:22 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
Lunch is on me!
J

Joined: Oct 2006
Posts: 4,590
Indy
Quote:







Re: Broken Rearend update [Re: joshking440] #855362
11/16/10 10:32 PM
11/16/10 10:32 PM
Joined: Mar 2006
Posts: 5,067
Orlando Florida
blown572dart Offline
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blown572dart  Offline
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Orlando Florida
Quote:

Quote:














Re: Broken Rearend update [Re: joshking440] #855363
11/16/10 10:36 PM
11/16/10 10:36 PM
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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dusturbd340W5 Offline
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Kissimmee Fl.
Quote:

over 1000!




I'll shut up about my little wimpy motor then


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
Re: Broken Rearend update [Re: blown572dart] #855364
11/16/10 11:51 PM
11/16/10 11:51 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
Lunch is on me!
J

Joined: Oct 2006
Posts: 4,590
Indy
Quote:

Quote:

Quote:



















Re: Broken Rearend update [Re: dusturbd340W5] #855365
11/16/10 11:51 PM
11/16/10 11:51 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
Lunch is on me!
J

Joined: Oct 2006
Posts: 4,590
Indy
Quote:

Quote:

over 1000!




I'll shut up about my little wimpy motor then




your wimpy motor has recorded a better 60' time than my car ever has

Re: Broken Rearend update [Re: joshking440] #855366
11/17/10 12:29 AM
11/17/10 12:29 AM
Joined: Mar 2006
Posts: 5,067
Orlando Florida
blown572dart Offline
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blown572dart  Offline
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Posts: 5,067
Orlando Florida
So what you going to put in it now

Re: Broken Rearend update [Re: blown572dart] #855367
11/17/10 02:19 AM
11/17/10 02:19 AM
Joined: Jan 2003
Posts: 19,377
Las Vegas
Al_Alguire Offline
I Live Here
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Las Vegas
Hopefully some real race parts


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: Broken Rearend update [Re: Al_Alguire] #855368
11/17/10 08:42 PM
11/17/10 08:42 PM
Joined: Mar 2007
Posts: 2,252
Sebring, Florida
M
Mopar Grandpa Offline
top fuel
Mopar Grandpa  Offline
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M

Joined: Mar 2007
Posts: 2,252
Sebring, Florida
Ain't drag racin fun????????????????????? Hope you get it back together soon. Very SWEET car you have there Josh!

Re: Broken Rearend update [Re: Al_Alguire] #855369
11/17/10 11:57 PM
11/17/10 11:57 PM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
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J

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Indy
Quote:

Hopefully some real race parts




Hows this....

6307148-newaxle1.jpg (88 downloads)
Re: Broken Rearend update [Re: joshking440] #855370
11/18/10 12:12 AM
11/18/10 12:12 AM
Joined: Mar 2006
Posts: 5,067
Orlando Florida
blown572dart Offline
master
blown572dart  Offline
master

Joined: Mar 2006
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Orlando Florida
Quote:

Quote:

Hopefully some real race parts




Hows this....





Man those look sweet

Re: Broken Rearend update [Re: blown572dart] #855371
11/18/10 12:14 AM
11/18/10 12:14 AM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
Lunch is on me!
J

Joined: Oct 2006
Posts: 4,590
Indy
yea...it was the weirdest thing to Jimmy....they just arrived at my door....

Re: Broken Rearend update [Re: joshking440] #855372
11/18/10 12:16 AM
11/18/10 12:16 AM
Joined: Mar 2006
Posts: 5,067
Orlando Florida
blown572dart Offline
master
blown572dart  Offline
master

Joined: Mar 2006
Posts: 5,067
Orlando Florida
Enjoy

Re: Broken Rearend update [Re: blown572dart] #855373
11/18/10 12:34 AM
11/18/10 12:34 AM
Joined: Jul 2010
Posts: 1,491
Oologah, Oklahoma
Big Squeeze Offline
pro stock
Big Squeeze  Offline
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Posts: 1,491
Oologah, Oklahoma
Something to think about........A LOT of times when parts like that break it's when the car is coming out of the water box and the tires grab and jerk the wheel speed down.......or it's pedaled it after it's started spinning the tires a little bit.......


If you can't handle the truth, you're living a lie.......
Re: Broken Rearend update [Re: Big Squeeze] #855374
11/18/10 12:41 AM
11/18/10 12:41 AM
Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto Offline
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Plymouth Meeting, PA
Quote:

Something to think about........A LOT of times when parts like that break it's when the car is coming out of the water box and the tires grab and jerk the wheel speed down.......or it's pedaled it after it's started spinning the tires a little bit.......





especially with drag radials!


BB, TT5,Procharged 3300lb Street Car 4.79/154
Re: Broken Rearend update [Re: Big Squeeze] #855375
11/18/10 12:58 AM
11/18/10 12:58 AM
Joined: Jan 2003
Posts: 945
La Vernia, Texas
Pat7272 Offline
super stock
Pat7272  Offline
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Joined: Jan 2003
Posts: 945
La Vernia, Texas
Quote:

Something to think about........A LOT of times when parts like that break it's when the car is coming out of the water box and the tires grab and jerk the wheel speed down.......or it's pedaled it after it's started spinning the tires a little bit.......




So how can a driver avoid that? Obviously dont pedal it but what about exiting the burnout?

Re: Broken Rearend update [Re: Pat7272] #855376
11/18/10 01:03 AM
11/18/10 01:03 AM
Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto Offline
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Plymouth Meeting, PA
you should never be under power when the tires bite coming out of the water. Drag radials are worse, since they don't slip like slicks they transfer all the shock to the drivetrain and the rear is first. His axles were his weakest link this time........

Drag radial cars need to check the axles pretty regular.


BB, TT5,Procharged 3300lb Street Car 4.79/154
Re: Broken Rearend update [Re: bigtimeauto] #855377
11/18/10 02:10 AM
11/18/10 02:10 AM
Joined: May 2006
Posts: 1,414
Stow ,Ohio
D
demon440 Offline
pro stock
demon440  Offline
pro stock
D

Joined: May 2006
Posts: 1,414
Stow ,Ohio
You aren't supposed to do a burn out in the water box in the first place.

Re: Broken Rearend update [Re: demon440] #855378
11/18/10 10:53 AM
11/18/10 10:53 AM
Joined: Jul 2010
Posts: 1,491
Oologah, Oklahoma
Big Squeeze Offline
pro stock
Big Squeeze  Offline
pro stock

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Posts: 1,491
Oologah, Oklahoma
Quote:

You aren't supposed to do a burn out in the water box in the first place.




OK.......You roll through the water box, start the burnout where the ground is damp/wet (which is still considered the water box) and as you roll forward you need to make sure to let off the throttle before the tires grab, which means you need to have quite a bit of wheel speed.......

I know it sounds funny, but most of the time it's a lack of power that breaks stuff......there's not enough power being applied to keep the tires spinning so the tires are jerked down to a stop......That quick/sudden stop is what kills parts......I've seen rods kicked out.....torque conveters broken......axles broken.......low/reverse roller clutches exploded........U-joints flying out.......

I'd built a Turbo 350 trans for a customer's low 10 second truck.......They take it out for a test drive and the very first time they hammer on it they break the input shaft (this is on the street)......They think they're the shizzle because it makes so much power but what really happened was is they were blowing the tires off while in low gear and it hooked up, yanking the motor down, and twisting the input shaft........It's that sudden smack that's the killer....... They actually came back to me all pissed off because I "couldn't build a trans to hold their power"......


If you can't handle the truth, you're living a lie.......
Re: Broken Rearend update [Re: Big Squeeze] #855379
11/18/10 11:16 AM
11/18/10 11:16 AM
Joined: Oct 2006
Posts: 4,590
Indy
J
joshking440 Offline OP
Lunch is on me!
joshking440  Offline OP
Lunch is on me!
J

Joined: Oct 2006
Posts: 4,590
Indy
Well I can tell you a I didnt pedal the car, especially in the first 50 feet of the run.

I also am very concious on letting off the throttle as I leave the water box, but I do notice the car never really grabs when Im finishing the burnout like my dads car or a dragster does.

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