Hi all, I'm in the process of replacing various things, and already have the intake off and the valve cover off, so I see my timing chain - but is there a simple way to check if the chain is not "stretched"?

Of course if the chain needs replacement I would like to go ahead and do it now, but also I don't want to do it if I'm within acceptable limits.


I do see half of the guide cover broke off on top (didn't see any of those parts floating around anywhere).





video:

 

The proper way to check for chain stretch is with the special tool, the one on the left in this picture:


The tool is installed in place of the tensioner, then you remove and measure the tool length.

 

thanks @njaremka I'll order this tool

 

I figured I might as well change the chain, so I ordered this kit from detroittuner: https://www.detroittuned.com/mini-n14-timing-chain-kit/

It's a cryotreated chain so hopefully it will last the rest of the car's life. I guess I got confused with the terminology because I saw a video showing a piece called the "pretensioner" to test the chain wear.

 

The “pretensioner” is that tool. If you haven’t already, be sure to purchase the full timing chain tool set.

 

Thanks @njaremka I did purchase that too. I'm wondering now if I might as well do the head gasket at this point - how much more work is it? I haven't found a video online showing the full process for S cars, only the non turbo.

 

Check out this video, i just did the chain on my N18 and this helped so much