Driveshaft bolt torque

[Ciaoflyer]

Can anyone advise on where to get a decent hex set in order to torque the driveshaft bolts up? Cheers in advance!

[tobydog]

Unbrako
http://www.unbrako.com/wrenches" onclick="window.open(this.href);return false;

[itchyfeet]

Mine are Draper and work fine.

If the bolts have been replaced they will be spline not hex.

Make sure they are cleaned out first with a small screwdriver or similar and tap the bit in with a hammer to be sure it's home.

[tobydog]

Or
https://www.holo-krome.com/products.html" onclick="window.open(this.href);return false;

The most expensive fastener anyone can buy is one that fails.

I still use Unbrako keys from when I was an apprentice mould tool maker in the mid 70's

[Ciaoflyer]

Thanks guys, I have got them out but Haynes says I have to torque to 33flbs, so need a set that will fit torque wrench....

[tobydog]

Cut a piece of a key and use a socket. You'll need a grinding wheel or Dremel type tool with a grinding disk. Don't try with a hacksaw....

[Ciaoflyer]

Cut a piece of a key and use a socket. You'll need a grinding wheel or Dremel type tool with a grinding disk. Don't try with a hacksaw....

Tried this but got to 20 ftlbs and it slip, crap tools I suppose! Need to invest! What is the correct size?

[multisi]

The spline bit fits into a 10 mm socket bit then onto a 1/2 inch torque wrench. As Itchy says clean out and tap in . Check you have the important serrated washers, replace any that are worn out.

[937carrera]

My hex/spline/torx bits were bought in Sweden 20 years ago, as were my sockets. The sockets were rebranded TengTools, how good are they ?

Excellent.

I needed to remove some very tight T50 head bolts from another engine. My bit got some out, but on the worst the end flutes started to twist.

I bought some Kennedy / Kamsa -they just snapped

I borrowed / bought a Snap-on - One broke, the new one twisted on the end flutes too, so I'll be getting a replacement - about £40 each though

Conclusion ? - Teng is top quality gear, similar to Snap-On

My kit has long and short bits 3/8" and 1/2" drive, the long bits are best for driveshafts, but I can't remember the size off the top of my head

https://www.tengtools.com/r/gb/en/Bits-and-Drivers

[Ciaoflyer]

Thanks for this! Can I not just change the bolts to normal ones? Thanks

[937carrera]

You can go back to hex, but you get more purchase with a spline, so I understand

[937carrera]

oh, and don't forget they are just fixings, you can by then from engineering rather than automotive sources, you will need to know diameter, thread pitch, length and hardness ( I think they are at least 10.9, possibly 12.9), or just take a sample

[Ciaoflyer]

oh, and don't forget they are just fixings, you can by then from engineering rather than automotive sources, you will need to know diameter, thread pitch, length and hardness ( I think they are at least 10.9, possibly 12.9), or just take a sample

Cheers I got some good HT replacements with serrated washers from a good local engineering firm, only trouble is they are 1mm shorter, will this matter? Or should I just fit the originals?

[937carrera]

So long as the end comes through the back on the flange you'll be fine

How much from your engineer ?

[Ciaoflyer]

So long as the end comes through the back on the flange you'll be fine

How much from your engineer ?

The old ones don’t come through the flange. £5