5 Ways to Fix Galled Threads

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@drkgumby 9 ай бұрын

Your level of self control is amazing. Not a single instance of a 'screw up' joke or a 'that's what she said'video clip shows how much you have grown as a person.

@MikeTheBackyardMechanic 9 ай бұрын

SCREW UP! Ah, never thought of that....

@andrewcoulter525 9 ай бұрын

Remember to knock 30% off the torque when tightening a lubricated fastener, otherwise it's over-tightened. Unless otherwise stated in the service manuals, given torque settings refer to a "dry" fastener. A "dry" fastener refers to a new fastener that comes with a light protective oil coating. So when reusing fasteners it's a good idea to rub the threads down with a lightly oiled rag and torque to spec, or use anti-seize and torque to 70% of spec.

@MikeTheBackyardMechanic 9 ай бұрын

Oh wow, that's a rabbit hole that you exposed there! I generally use the same torque specs (so far on my channel) because I haven't been doing any critical engine components (head bolts, rocker arms, intake manifolds). When getting into critical specs, it gets a lot more complicated. A good manufacturer (like Porsche) will give a high/low range, for "with and without" lube. Some manufacturer specs are calculated with lube, others not. I would compromise with you and say to back off 10%. I think there is more risk in under torque than over. Here's an example of how stupid crazy this can get: T=F×[(0.159×P)+(0.577×d×μ)+(D_f×μ/2)] Where T = Torque Applied (Nm) F = Tension Generated in Fastener (N) P = Thread Pitch (m) d = Pitch Diameter (m) Df = Nut Friction Diameter (m) μ = Coefficient of Friction PSA: never use anti-seize on lug nuts.

@108gk 9 ай бұрын

There is a product called Tef-Gel that prevents galvanic corrosion on stainless steel screws into aluminum. I'm not sure if it works on HC steel but it might be worth checking out.

@augenmaugen 4 ай бұрын

The single tap recommendation is exactly the advice I needed today. I didn’t even realize that was an option (b/c I’m part newbie/part idiot). Thanks!

@MikeTheBackyardMechanic 4 ай бұрын

Excellent! Glad I could help!

@benjones9060 9 ай бұрын

I didn't know I need a thread tap. And I love this info. And... If I ever have kids, I'm going to ask you to help me name them.

@MikeTheBackyardMechanic 9 ай бұрын

Name him Threadtap.

@matthewnolan8209 2 ай бұрын

Thanks for making this video! Very helpful.

@wryguy 4 ай бұрын

You saved my sanity. Thank you!

@MikeTheBackyardMechanic 3 ай бұрын

Glad to hear it!

@thomasdaum1927 9 ай бұрын

Very informative , thanks !

@motormaker 9 ай бұрын

Cheap taps are often made from carbon steel. The quality taps are made from a type of tool steel called high speed steel , labeled HSS. If you are chasing a thread in an engine block don’t waste time and money on cheap taps. It’s just not worth the risk. As a side note ,I consider all metallurgy claims from certain parts of the world as suspect. If the cheap tap is a bit soft it won’t cut. If it’s a bit too hard it will be brittle and before you know it you broke it off in your hole. Either scenario is a bad day. Just get the good tap. If It doesn’t say High speed steel or HSS it isn’t. They will always be marked.

@MikeTheBackyardMechanic 9 ай бұрын

Preach!

@w2tty 9 ай бұрын

Gosh you me laugh. I really enjoy your humor.

@psilocin6739 9 ай бұрын

A few years ago I bought a tap and die set from harbor freight for 30 bucks and surprisingly it wasn't bad. As long as you remember to take it easy on them, they'll last quite a while. I know they're bottom of the line but it's all I could afford and they've paid for themselves. Someday I'll buy the good shit but if you're poor like me it'll get you by.

@MikeTheBackyardMechanic 9 ай бұрын

But how many different taps did you use? Did you use any dies?