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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Cressida tail shafts
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Wed, 07 January 2004 10:38
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I need a bit of help on what tail shaft might fit a 1J in an MX-73 cressida. We got the yoke in the back of the new gearbox but it's been cut very close to the uni & won't be 100% trustworthy if fitted to the standard tail shaft. Also the standard rear unis are alot smaller than the one behind the yoke. It can be done, but will cost a little bit too much for something that we will be waiting for to beak.
The other option is a new custom 1 piece which might need a new flange on the diff, which would cost way too close to 1000 bucks for a tail shaft for this car/conversion.
So I'm wondering, does the MX83 tail shaft fit straight up to the 1Js auto? And would the MX83 shaft bolt up to the MX73 diff?
I bet the diffs will have different flanges wont they.....
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Cressida tail shafts
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Wed, 07 January 2004 13:14
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MX73 4 bolt, MX83 6 bolt (diff flange)
Doesnt the mx73 shaft fit into the 1jz box? has toyota funally change something?
Best bet is to put the 1jz yoke on the mx73 shaft
Dont do a one piece if you ever plan to take it out.
With a one piece, you have to remove the diff or the motor to get the gbox out
And $1000 is waaaaaay over the top dude
Max $200 worth of tube, 2 uni joints (50 each), labour and balance should put it at about $600 max
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: Cressida tail shafts
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Wed, 07 January 2004 13:44
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Doh, 6 bolt hey, that sux.
The yokes have the same o.d., but the old is 21 spline & the new 23.
Yeah 600 was the mentioned price, and that included changine the flange on the diff to bolt up to a bigger tailshaft flange that takes a bigger uni, & pulling out & stuffing around with the diff is goona add more onto that, & it's just too close too 1000 bucks.
I think attaching the new yoke to old shaft will be the go, & when or if the tiny cressida unis go I'll look at what can be done.
I think half the trouble is that the new yoke has been cut short, so there's not much to weld to, plus it's very close to the uni, which feels a bit old anyway, but is staked into place.
I might see if SSS have any others that havn't been cut so close.
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Cressida tail shafts
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Wed, 07 January 2004 13:56
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Well, they better handle the torque, mine are going to be taking 1uz torque in a month or so, so I hope they holdup!!
Ahhh, sometimes (only sometimes) I'm glad I decided to keep it manual. Heeheh, NOOO tailshaft worrieds 
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Location:
Sydney
Registered:
May 2002
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Re: Cressida tail shafts
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Wed, 07 January 2004 21:48
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| CrUZsida wrote on Thu, 08 January 2004 00:14 |
Dont do a one piece if you ever plan to take it out.
With a one piece, you have to remove the diff or the motor to get the gbox out
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Huh? How do you figure that?
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: Cressida tail shafts
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Wed, 07 January 2004 23:34
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Joel, has the tailshaft place actually told you it is useless? Usually they take off the last vestiges of the tube so that just the yoke is left, and then weld that into a (new) tube. Obviously, if it cut through the yoke itself, then you have a problem.
I'd be a little disappointed if the tailshaft came out to more than $300.
Cruzsida, not sure I understand you at all. All my cars have a 1 piece tailshaft - I just undo the flange bolts that mate it to the diff and pull it out.
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: Cressida tail shafts
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Wed, 07 January 2004 23:54
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I think Cruzsida is right when it comes to IRS equipped cars, the tailshaft goes over a part of the diff cradle, & would not be able to be dropped at the diff & pulled back out of the box. That's another bumber.
Dave, the place I'm going to are really helpful, & have said they can attach the new yoke/uni/end cap assembly onto the old shaft, but said these newer cressidas etc don't have a normal end cap/uni mount welded onto the end of a tube, they have a uni mount that has an inch or so of tube on it which is friction welded to the rest of the tube/shaft.
As I said before it's also been cut (with a gas axe I might add!) very close to the end of the shaft, so there's about 6mm to play with at the shortest point. To attach it to the old shaft it would have to be built up with a bit of weld.
A little dissapointed for more than $300?
Tell me about it, I was estimating under 200, and when we started talking 600+ I couldn't believe it!
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Cressida tail shafts
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Thu, 08 January 2004 00:30
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Yep, BigWorm is correct.
About 8"-12" from the diff, the shaft goes through a 6" x 8" hole in the chassis rails (if you get what I mean).
Thus you need a 2 piece inorder to drop the front half, and then pull the rear half out.
If you undo it at the diff first, it only drops about 1" maybe 2" before it rests in this hole.
You would need about 3" drop to clear the diff
On a side note, my tailshaft cost me $275 I think to lengthen the front piece by 100mm (whole tube had to be replaced) and then rebalanced, but I think I got ripped off.
I know someone who had a single piece lengthened by the same amount, and he paid just under $200
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Cressida tail shafts
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Thu, 08 January 2004 00:34
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Same thing happens with the Mk2 Supra, with a single-piece shaft there isn't enough room to remove the shaft if it's one piece, it hits on the diff cradle.
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Cressida tail shafts
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Thu, 08 January 2004 01:33
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so with that nice little loop the mk2s have... what's the difference between that and a tailshaft loop?
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Cressida tail shafts
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Thu, 08 January 2004 01:36
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dunno, but I think the MX73 has both as well
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: Cressida tail shafts
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Thu, 08 January 2004 14:00
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A tail shaft loop is installed at the front of the shaft, primarily to stop the front of it falling to the ground. If the shaft snaps & drops at the back, it should just slip out the back of the gearbox & drop out from underneath behind the car.
It's only when the front of the shaft falls down that there's a chance it'll flip you ass over.
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Location:
Melbourne
Registered:
May 2002
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Re: Cressida tail shafts
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Thu, 08 January 2004 15:23
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none of your cars are IRS tho Dave 
try geting your hands on an MA70 tailshaft the uni's are serviceable
Allan
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: Cressida tail shafts
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Thu, 08 January 2004 15:40
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I imagine the Ma70 would be similar to the MX83 wouldn't it?
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: Cressida tail shafts
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Fri, 09 January 2004 16:01
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Well, we ended up going back to SSS for a few things, & while we were there we were able to swap the yoke for one with a good inch at heast of shaft still on it, & it should be attached to the original shaft & balanced etc by monday, for $250.
The other good thing is, this is my brothers car, so he foots all the bills. 
If anyone ever needs any tailshaft work done, I can highly recommend Sydney Driveline Services, at 10 Reservoir Ave, Greenacre, 9790 7344.
The guy who helped us out also pointed out the transmission dampner built in to the rear tailshaft. It's actually a tube inside a tube, with a uni & flange at one end connected to the outer tube and the same at the other but connected to the inner tube, and then there's a 2-3mm layer of rubber between the two.
He reckoned this would break before one of the unis, I guess we'll just have to wait & see. 
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