18 replies to this topic

[mini-auto]

Hey Spider, Do you fit a copper washer under the head of the M20 ?  

Should I flood the M20 threads with thread lock (Loctite) when I install & rely on that to give a good seal ?

What do you recommend ?

[Spider]

Hey Spider, Do you fit a copper washer under the head of the M20 ?  

Should I flood the M20 threads with thread lock (Loctite) when I install & rely on that to give a good seal ?

What do you recommend ?

 

Yes on both counts, only I don't flood the threads with loctite, just enough to get the job done. I also clean both threads before applying the loctite with thinners. Also, be sure that the copper washer is annealed, so many out of the box these days are hard.

[pothole]

There is nothing wrong with helicoils just the expense of buying the set, for what will be a one off job.

What I did to repair mine as I don't have access to engineering machines anymore, was as Spider did tap out the thread to 20mm, but just use the 20mm bolt and a copper washer, I removed the magnet from the old sump plug and pressed it into the 20mm bolt. But don't use a high tensile M20 they are a pig to drill, and use plenty of cutting compound on the tap to try and stop the swarf entering the sump.

[NateDogg2909]

Now that is an idea and a half, why try and make a sleave with the lathe when you are already half way there with a m20 bolt.

All I need to do now is find out if my friend has a 18.5mm drill bit and m20 tap, otherwise I might as well buy the both myself and a m20 magnetic sump plug.

Thanks for the brilliant idea