Mate if they told you they could rebuild it I'd never take my car there again. It cannot be rebuilt for all the reasons already provided in detail in this thread (and many others lol)
Spoke to Andrew from ASR about this several times, as he noticed mine has begun to sag, he advised to steer clear from 1piece for the balancing issues mentioned previously, said the oem 2piece is the way to go, pointed me in the direction of courtesy nissan in the states, cost around $800 delivered in 3days, Nissan aus wanted $1600 and 6weeks, haven't had it fitted yet as there's no noticeable vibration yet. But wanted to have the part ready as they are a pain to source. Yes it's going to cost in the region of $1000 to replace as I'm going down the oem route, but I'd rather trust the nissan engineers, this is much like the control arm debate that I saw going on in another thread, people are split on oem v aftermarket there's no right or wrong option just cost v quality, if you can afford oem do it IMO.
Not sure where your reality is. 440kph in an auto 4.1 rear end is something like 10,600 engine RPM, divided by the 0.694 overdrive gives a shaft RPM of 7350 odd, that's a pretty special lathe ! And this was done with a CV and splined yoke attached ?
Certainly brisz ! You should have it done for about $100 plus labor by someone who does uni's. When I looked at the way the caps are staked in I thought about doing exactly what this guy does and shear them off with brute force but ir didn't occur to me to find a suitable uni and machine clip grooves into the caps like Rockford has, so I didn't really pursue it. The reason I say get some one that does them is you are likely to screw up the first few you do, I had some one try to teach me when I was a teenager and there is a bit of an art to it, its not just bashing the caps on in my experience. Any way this guy will talk you out of watching the whole process he waffles on that much: https://www.youtube.com/watch?v=nJIL1vJDILY Parts are from Rockford Driveline: http://rockforddriveline.com/ Nice drawing here: http://rockforddriveline.com/Staked Ujoints.PDF and here http://rockforddriveline.com/GKN-Type98.pdf Please don't bombard Rockford with multiple emails, I have sent one and will post the reply here. As per above quote request, they do a CV rebuild kit and a "high speed boot kit" for the CV as well, dunno if it needs one as the CV's seem to stand up OK. The uni's are about $25USD so you would probably land 2 in Australia for $100. But I would probably do the CV and a new centre bearing while its out. Unis $100, CV $50, CB $100, labor (carry in shaft) $150, still cost $400 odd. IT CAN BE DONE !
I cant even remember how much I paid, but I have a feeling it was more then $300, this is when I first got the zed and before I was a member on the forum. I took my car to a local mechanic my dad uses and he found someone to make one up...yes I'm aware that it's probably not the best of the best..but its been going for 10 years no problems
You'd be surprised -if the welds haven't come apart and it doesn't vibrate that's really all you're asking of a tailshaft (unless you're spending big $$ for a very specific outcome). Might be an idea to give the unis a lube though if they have grease nipples.
+1 here for 1 piece. Had a 2 piece & had to get it balanced twice in one year. In the end the vibrations got so bad that they made the car undriveable. Replaced it with a 1 piece & vibrations all gone, smoother than ever & a pleasure to drive again
I have had a response from Rockford. I didn't ask about NA although they have apart number, I assume they would be about the same price. In the catalogue they detail like this. Gearbox (1)===(2)===(3)Differential They say that (1) is not available but (2) and (3) are the same, obviously they have the CV position a little muddled up. The reason I mention this is that they say the same for the NA, as we know there is no CV on the NA shaft, so I am assuming that the 3rd uni is the same as the other 2. Here is the pricing reply from Rich at Rockford with some details added by me. All dollar amounts in USD.
I would think that just about ANY competent machine shop would be able to machine in the circlip grooves you need to retain the bearing cups. Things like Cardan joints, like almost all bearings, tend to be designed to engineering standards in terms of dimensions so just some measurement of the existing uni's and a browse through the Cardan joint catalogue should result in a suitable uni. HOWEVER, there is a bit of dicking around removing the staked in stock uni's and splitting the shafts and so-on to set up for the groove machining so a fair whack of labour might go on if the shaft is dropped off complete from the car and the entire job done by the machine shop. E
I think the issue is not enough metal. if you were to do this I think the better option would be to remove the entire end, and then weld on a complete new end on the existing shaft. Would be cheaper to buy a new complete shaft from Coz.
Sure it's one thing buying the uni's, it's another being able to install them. U gonna be the guinea pig
If I hadn't thrown out my 2 piece when I moved, which I would of liked to of saved because I always thought "it can't be done" was BS. I now have a 1 piece which I am very happy with. But I do like to keep things OEM where possible, I considered a TT 2+2, OEM 2 piece from Japan for $1500. Given the opportunity again I would do it, with heat shield and correct TT centre bearing it should be a reliable thing.
Complete unit from Coz is $US577 https://conceptzperformance.com/Cart/description.php?II=8045 (Don't know if this is 2+2 or 2+0 though)
