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Borked another 904 tail
#148196
11/10/08 12:00 PM
11/10/08 12:00 PM
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Joined: Jan 2003
Posts: 9,982
Ansonia, CT
CJK440
OP
master
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OP
master
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
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Yesterday I had another 904 tail housing crack. It did it on Memorial day and I simply swapped the housing hoping it was a fluke. Guess it wasn't.
I plan to have the alum shaft checked for balance but I also want to check slip yoke engagement. What is the ideal distance from the end of the tail to shoulder of the slip yoke?? Could the slip yoke not be inserted enough cause my problem??
Anything else I should be looking into. The engine is on stock rubber biscuit mounts that aren't torn and has a stock rubber tranny mount.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: Borked another 904 tail
[Re: CJK440]
#148200
11/10/08 09:56 PM
11/10/08 09:56 PM
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Joined: Jan 2003
Posts: 12,216
Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,216
Benton, IL.
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The last tail shaft I broke was due to excessive run-out on the tranny output shaft. Broke 2 tail shafts and could not figure out why, until I checked the tranny's output shaft with a dial indicator. Changed the output shaft and no more problems. To this day I don't know how the shaft got bent.
Master, again and still
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Re: Borked another 904 tail
[Re: CJK440]
#148201
11/10/08 10:01 PM
11/10/08 10:01 PM
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Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
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I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
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Quote:
Yesterday I had another 904 tail housing crack. It did it on Memorial day and I simply swapped the housing hoping it was a fluke. Guess it wasn't.
I plan to have the alum shaft checked for balance but I also want to check slip yoke engagement. What is the ideal distance from the end of the tail to shoulder of the slip yoke?? Could the slip yoke not be inserted enough cause my problem??
Anything else I should be looking into. The engine is on stock rubber biscuit mounts that aren't torn and has a stock rubber tranny mount.
Couple of causes:
Output shaft bend
drive shaft bent
drive shaft out of balance
U joint not located properly, incorrectly installed, or moving withing the yoke.
excessive front u joint angle.
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Re: Borked another 904 tail
[Re: turner]
#148203
11/11/08 08:42 AM
11/11/08 08:42 AM
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Joined: Dec 2005
Posts: 722
Hampstead, MD.
Troublemaker427
super stock
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super stock
Joined: Dec 2005
Posts: 722
Hampstead, MD.
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I broke several C4 tailhousings years ago because of a bent pinion. It doesn't take much!!!
Jody Aberts
1966 Fairlane 427
Troublemaker2
AA/NSS
1964 Galaxie 500XL
390-4spd.
1966 F-100
390-C6
1967 Plymouth VIP
383-TF
2003 Roadking
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Re: Borked another 904 tail
[Re: Troublemaker427]
#148204
11/11/08 05:07 PM
11/11/08 05:07 PM
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Joined: Jan 2003
Posts: 9,982
Ansonia, CT
CJK440
OP
master
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OP
master
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
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Suspension is all stock with repop 340 springs. I am running the factory snubber. With the stock springs there is not enough room for an adjustable snubber and the way the car squats on launch I am not sure the pinion can rotate up much.
My housing broke thru the speedo hole, forward of the tranny mount, not like the pic above.
The tranny is coming out over the winter to get freshened up so I'll get the mainshaft out and indicate it.
I'll check the D-shaft too.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: Borked another 904 tail
[Re: CJK440]
#148205
11/11/08 05:08 PM
11/11/08 05:08 PM
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Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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What are you using for engine and tranny mounts?
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Borked another 904 tail
[Re: CompWedgeEngines]
#148206
11/11/08 05:53 PM
11/11/08 05:53 PM
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Joined: Jul 2007
Posts: 189
Newark, OH
springers340dart
member
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member
Joined: Jul 2007
Posts: 189
Newark, OH
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i had this problem but with the 727 2 years ago, brand new driveshaft and it was just .018 out of balance. broke in the same place as yours turner
Last edited by springers340dart; 11/11/08 05:55 PM.
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Re: Borked another 904 tail
[Re: CompWedgeEngines]
#148207
11/11/08 06:23 PM
11/11/08 06:23 PM
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Joined: Jan 2003
Posts: 9,982
Ansonia, CT
CJK440
OP
master
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OP
master
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
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Stock rubber biscuit mounts in the front and stock rubber rear.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: Borked another 904 tail
[Re: CJK440]
#148210
11/12/08 09:51 AM
11/12/08 09:51 AM
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Joined: Sep 2005
Posts: 2,442
LOWELL IN
QWK_ENUF
top fuel
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top fuel
Joined: Sep 2005
Posts: 2,442
LOWELL IN
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put a truck housing on as they are stronger
WAXER
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Re: Borked another 904 tail
[Re: QWK_ENUF]
#148211
11/12/08 10:42 AM
11/12/08 10:42 AM
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Joined: Jan 2003
Posts: 75,071
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,071
U.S.S.A.
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Quote:
put a truck housing on as they are stronger
is there such a thing for a 904 ?
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Re: Borked another 904 tail
[Re: QWK_ENUF]
#148214
11/12/08 01:34 PM
11/12/08 01:34 PM
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Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366
I Live Here
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I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
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Quote:
Quote:
Quote:
Quote:
put a truck housing on as they are stronger
is there such a thing for a 904 ?
Good question, if there is then I never knew about it. 
sorry , got 727 on the brain
That's ok, you are forgiven. 
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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