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T5 conversion, Question on driveshaft

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Old 05-09-2012, 09:05 PM   #1
KidsStang
 
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Default T5 conversion, Question on driveshaft

Hello, Anyone out there with a T5 conversion, did you have to cut down your drive shaft, how much? Did you keep your yoke or buy an aftermarket, I tried to install the driveshaft last weekend and it would probaly work but there was little to no extra yoke left, probaly too tight right?
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Old 05-09-2012, 10:41 PM   #2
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yeah most of us have to cut the DS and a good number of us wish we had never wasted time messing around with the old DS... Do yourself a favor and get a new 3" aluminum one from Denny's Driveshaft online with new u joints and slip yoke the works.

If you insist on messing around with the old one either because of finical reasons or you just want to be stubborn I would measure careful like and make sure to get about 0.750 to 0.900 inch of free play between the tailshaft oil seal flange and the end of the machining on the slipyoke. This distance is measured with the car on the ground as it would when driving. Also get a new slip yoke and make sure the tail shaft bushing is new.

Failure to heed any of these warnings could result in a serious drive line vibration issue that is potentially dangerous.

Good luck

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Old 05-09-2012, 10:57 PM   #3
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Listen to GunJam!!!! he is right on. I would go into detail but i am sick and tired of even talking about the issues i had.
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Old 05-10-2012, 02:31 AM   #4
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We might be going to the Aluminum shaft and would have the one from our conversion left over. Its a perfect DS and was done right. We are coming to Springfield Mo in about 7 weeks if you wanted to buy it from us.

We are in Cali right now btw.
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Old 05-10-2012, 06:29 AM   #5
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If you have a big diesel shop around you ask if they can make you a driveshaft.I have used one by me for years its easy and no shipping to mess with.
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Old 05-11-2012, 02:27 PM   #6
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Mine didn't need cutting, I have right at 1 inch.
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Old 05-11-2012, 06:00 PM   #7
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I didnt cut mine either.Had a C4 before.
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Old 05-11-2012, 06:05 PM   #8
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I found a place that will cut down and balance the drive shaft, Appropriatly named , Driveshaft Unlimited, But why must a new yoke be used? The old one seems to fit.
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Old 05-11-2012, 06:51 PM   #9
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I'm going from a 3-speed to a T5. I was told my old yoke would work fine.
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Old 05-11-2012, 07:13 PM   #10
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You need a new slip yoke because the parts suppliers want to sell you one. Glazier/Nolan checks whether you need one before telling you to shell out $100.

About 80% of the time time your old driveshaft will fit just fine. If you can get it into place with the wheels hanging, you'll get a little clearance when you pop the rear joint into the pinion yoke, and tighten the u bolts. When you put the car on the ground, the slip yoke will slide farther out of the trans, giving you a comfortable amount of clearance.
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Old 05-11-2012, 07:47 PM   #11
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Yeah thats what I thought, I can understand if the yoke was inserting too far into the trans tailshaft, but if the shorter driveshaft corrects this then why get one.
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Old 05-11-2012, 10:31 PM   #12
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Quote:
Originally Posted by 2+2GT View Post
You need a new slip yoke because the parts suppliers want to sell you one. Glazier/Nolan checks whether you need one before telling you to shell out $100.
No you need a new slip yoke because the old one is worn where is rode on the TS bushing and is a possible source of vibration.

You need a new TS bushing for the same reason. My experience has been that the TS bushing compresses a bit due to its manufacturing process when inserted into the TS housing. In my case for for proper fit the bushing had to be honed using a brake cylinder hone. Now you slide in that old slip yoke and its proper tolerance unit it reaches the wear mark and now its a sloppy fit.

Go on roll the dice you might get lucky...a number of us do but when you dont get lucky it sucks. The time and money I spent hunting down these issues I could have bought about 2 new DS from dennys.
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Last edited by Gun Jam; 05-11-2012 at 10:36 PM.
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Old 05-12-2012, 06:36 AM   #13
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That's why you might need a new yoke. My problem is with those who force you to buy one, by telling you it's a "T5 yoke, required for conversion".

I have never needed to hone a tailshaft bushing. Typically, the tailshaft bushing can be installed with the trans in the car, without disturbing the tailshaft housing. The whole job takes about 2 hours, with the right tools.
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Old 05-12-2012, 09:47 AM   #14
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Quote:
Originally Posted by 2+2GT View Post
That's why you might need a new yoke. My problem is with those who force you to buy one, by telling you it's a "T5 yoke, required for conversion".
+1

That's a load nothing is "required" In fact the real t5 slip yoke wont even fit the classic style DS as it uses a different U-joint I recall.

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Old 05-13-2012, 09:27 PM   #15
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i didnt cut mine either or change the york.
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Old 05-18-2012, 02:35 AM   #16
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Quote:
Originally Posted by KidsStang View Post
Hello, Anyone out there with a T5 conversion, did you have to cut down your drive shaft, how much? Did you keep your yoke or buy an aftermarket, I tried to install the driveshaft last weekend and it would probaly work but there was little to no extra yoke left, probaly too tight right?
I chose to buy a new driveshaft to save time and hassle. You will love this conversion!
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Old 05-18-2012, 02:35 AM
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95, balance, classic, conversion, cut, drive, driveshaft, leaking, mustang, north, oil, shaft, swap, t5, texas, v6, yoke

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