Re: Over sized 727 yoke bushing needed
[Re: NoFrills]
#2960383
09/02/21 06:15 PM
09/02/21 06:15 PM
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Joined: Aug 2011
Posts: 2,872 Pattison Texas
CSK
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master
Joined: Aug 2011
Posts: 2,872
Pattison Texas
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From a bad experience with out of balance driveshafts, the only company that can spin a shaft at the desired rpm is Mark Williams, as one example of my getting the SHAFT LOL, my Strange engineering shaft was only spun up to 500 rpm , thats as fast as they can spin them, after LOTS of wasted money I call MW & they solved my vibration problems & tailshaft bushing problems
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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Re: Over sized 727 yoke bushing needed
[Re: NoFrills]
#2960628
09/03/21 12:29 PM
09/03/21 12:29 PM
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Joined: Jan 2003
Posts: 26,005 Rio Linda, CA
John_Kunkel
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Rio Linda, CA
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so bought a replacement and still feels loose. "Feel" varies with the individual, one man's too loose is another man's OK. Depending on how far the slip yoke extends from the bushing (leverage), it can feel like excessive play but isn't really.
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Re: Over sized 727 yoke bushing needed
[Re: NoFrills]
#2960636
09/03/21 12:55 PM
09/03/21 12:55 PM
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Joined: Mar 2007
Posts: 3,287 West Coast, USA
jbc426
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A lot of Mopars have excessive play at the tail-shaft bushing with new bushings installed. I researched, found and installed a Teflon coated bushing from a 4L60 in my 2004R trans. It also fits Mopar transmissions. I found them on ebay, but not at any of the normal parts houses. Once installed, the fit was perfect. I realize the bushing went into a 2004R, but my Mopar machinist buddy measured and verified it will fit in Mopar tail-shafts too, although it is just a fraction of an inch shorter. https://www.ebay.com/itm/272938846373Try one. It's an inexpensive fix for a common problem. I typically felt the slop when lightly on and off the gas when at freeway speed. This eliminated that.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Over sized 727 yoke bushing needed
[Re: CSK]
#2960639
09/03/21 01:02 PM
09/03/21 01:02 PM
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Joined: Mar 2007
Posts: 3,287 West Coast, USA
jbc426
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West Coast, USA
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From a bad experience with out of balance driveshafts, the only company that can spin a shaft at the desired rpm is Mark Williams, as one example of my getting the SHAFT LOL, my Strange engineering shaft was only spun up to 500 rpm , thats as fast as they can spin them, after LOTS of wasted money I call MW & they solved my vibration problems & tailshaft bushing problems This was an issue for me too. I just ordered a 4 inch bonded aluminum driveshaft with their forged yoke and 1350 joints from them. It wasn't cheap, but it's Critical Speed is nearly 10000 rpm. Between the old Strange driveshaft and the chattering, clunking Eaton TruTrac being replaced with Dr Diff's new and improved TruTrac 2, I hope to have eliminated my mystery vibration that only occurred from 98 mph on up. My '68's driveshaft is pretty long to begin with.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Over sized 727 yoke bushing needed
[Re: jbc426]
#2960744
09/03/21 06:52 PM
09/03/21 06:52 PM
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Joined: Jan 2003
Posts: 26,005 Rio Linda, CA
John_Kunkel
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Rio Linda, CA
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A lot of Mopars have excessive play at the tail-shaft bushing with new bushings installed.
I researched, found and installed a Teflon coated bushing from a 4L60 in my 2004R trans. It also fits Mopar transmissions. Does that bushing have an oil feed hole at the top?
The INTERNET, the MISinformation superhighway
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Re: Over sized 727 yoke bushing needed
[Re: John_Kunkel]
#2960803
09/03/21 10:00 PM
09/03/21 10:00 PM
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Joined: Jan 2004
Posts: 8,356 fredericksburg,va
cudaman1969
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Joined: Jan 2004
Posts: 8,356
fredericksburg,va
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A lot of Mopars have excessive play at the tail-shaft bushing with new bushings installed.
I researched, found and installed a Teflon coated bushing from a 4L60 in my 2004R trans. It also fits Mopar transmissions. Does that bushing have an oil feed hole at the top? My thoughts too, also will the nylon wear the yoke?
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Re: Over sized 727 yoke bushing needed
[Re: John_Kunkel]
#2960833
09/03/21 11:56 PM
09/03/21 11:56 PM
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Joined: Mar 2007
Posts: 3,287 West Coast, USA
jbc426
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Joined: Mar 2007
Posts: 3,287
West Coast, USA
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No, it does not have an oil hole. It would be easy to drill one, but it may not need it. John, you would know if it a pressure fed or drip/weep hole. I can't imagine they would feed pressurized transmission fluid there. The replacement bronze bushings I got from the local parts store did not have oil holes in them, but the ones from Brewers do.
I'll be pulling mine apart to change the driveshaft, gears and differential, and will check for any unusual wear since I installed it last year. It still runs and feels much smoother.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Over sized 727 yoke bushing needed
[Re: jbc426]
#2960985
09/04/21 03:38 PM
09/04/21 03:38 PM
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Joined: Jan 2003
Posts: 26,005 Rio Linda, CA
John_Kunkel
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Posts: 26,005
Rio Linda, CA
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The rear bushing is drip fed by the capillary effect of the fluid following the spine rib at the top of the tailhousing (red arrow in pic below). The long length of the TF tail (compared to others) makes lubrication back there a little more critical than other brands with shorter housings.
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