S257sx-e compressor nut torque

[mfsuper90]

Does anyone know the torque specs on a s257? I've searched high and low and came up with nothing

 

[zfaylor]

13.6 N-M on a standard s200.

 

[mfsuper90]

Thank you!!
You saved me a lot of hassle.

 

[zfaylor]

No problem. Make sure to use a t handle on the nut and a socket in a vise on the turbine to tighten. It becomes more important with the smaller chargers to avoid tweaking the shaft with uneven forces.

 

[biggy238]

Link to said T handle torque apparatus

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[zfaylor]

Link to said T handle torque apparatus

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Made in house here. There were some swiss companies I found that made them but the price is quite shocking. I am sure there are more somebody else sells but we made a nice t-handle with our machining stuffs and bought quality digital inline torque adapters from crap-on. Best to have a u-joint inline with it all to keep from rocking it to one side with torque as well.

 

[biggy238]

Aahhh I see

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[AHall]

A standard torque wrench will work fine.

 

[biggy238]

I was more curious because building a torque wrench and calibrating it is a bit ambitious. I can see building T handles and using a digital torque adapter.

The last 3 I torqued with my micrometer type didn't seem to have trouble, but twisting a high speed shaft by having a single moment arm could have its downsides.

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