Halfshaft Torque Values
Discussion
leorest said:
How does that compare with the number you used?
Thanks very much for this. I really appreciate it. Numbers for these nuts aren't in any of the TVR for the 280i that I've seen. Whenever a torque value is spec'ed, I use it. I don't recall what the numbers I used were. I seem to feel that the numbers I used were a bit lower, but again, I can't recall exactly. I'm going to go back and re-torque these nuts to 52ft lbs/71Nm. I'll also re-torque everything else while I'm there.
- SJ
leorest said:
While your at it lean on the hub nuts as they are known for coming undone! 230lbf ft according to SH.
Absolutely. Planned on it. I've had lots of cars set up like this and I've never had a problem. A local guy had a terrible time with his 280i. Twice he lost a wheel from this nut coming loose. Asking him whether he'd torqued the nuts properly, I seem to remember he said his mechanic had (not too sure about this; I've seen scant few mechanics using torque wrenches). I do well remember the puzzled look, though, that I got when I asked whether he'd used a Nyloc nut and/or some other type of thread lock. Unfortunately, he didn't know what a Nylon locking-insert nut was.
I did go through the front and rear suspensions of my 280i, being very careful about all the details. My brother is building up a rather serious Lotus Europa track car. He's gone a bit overboard with the aerospace and military hardware. He knows which applications are critical and quality hardware should be used, but he's decided he's going to use the stuff for just about everything. The benefit for me is that I now have instant access to well-organized bin upon bin of great (and pricey) hardware whenever I need it.
He's also a toolmaker so he builds a lot of the parts he needs, and he helps me out here and there. Many, many thanks to Steve Heath for the Wedge book. There's still much more technical information about the Wedges I'd like to know/see documented, but his book has been invaluable. When is the second volume coming out?
- SJ
m2500tvr said:
...I've seen scant few mechanics using torque wrenches
Couldn't agree more. They seem to think you just do it up till you pop a vein.m2500tvr said:
I do well remember the puzzled look, though, that I got when I asked whether he'd used a Nyloc nut and/or some other type of thread lock. Unfortunately, he didn't know what a Nylon locking-insert nut was.
AFAIK This nut is a special (very fine thread considering the diameter of the shaft) and I doubt you'll be able to buy one off the shelf. So chances are he's using the original nut which has been off/on more times than a lady of the night's undergarments! When I get round to replacing mine I would dearly like to get an all metal locking type but don't fancy my chances. Last time I spoke to RT-Racing they were out of stock and I was informed they were having a new batch of nylocks made. That was some considerable months ago so they should have them by now, unless they sold out again! Leo
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