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Thread inserts Engine case cover (Read 143 times)
ThumperPaul
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Thread inserts Engine case cover
02/22/24 at 09:19:12
 
I’m back.  Can thread inserts be used in the crankcase where the engine cover bolts into (alternator side cover)?  I believe I’ve managed to screw one up.  When the good book says max 13m.m. - don’t try 14 n.m.
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zevenenergie
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Re: Thread inserts Engine case cover
Reply #1 - 02/22/24 at 09:33:37
 
yes, that is possible, but make sure you drill and tap straight. So not by hand, but by drilling a hole in a piece of wood with a drill press and using that as a guide.
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ThumperPaul
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Re: Thread inserts Engine case cover
Reply #2 - 02/22/24 at 10:15:02
 
Thanks Zevenenergie.  That's a good tip!  I was also concerned about if there is enough material in the area to drill out a 1/4" hole to install the insert.  It looks like it, but things haven't exactly been going my way with this bike.
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zevenenergie
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Re: Thread inserts Engine case cover
Reply #3 - 02/22/24 at 11:03:55
 
It,s al in the past. (As long as your spark plug is in)

There is also such a thing as effortless consciousness. And that always goes your way.
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ThumperPaul
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Re: Thread inserts Engine case cover
Reply #4 - 02/22/24 at 12:07:03
 
Any easier ideas than a thread insert?  JB-Weld Marine (works on aluminum).  Some red thread locker?  Just dope it up with some RTV real thick and oozing out?

It does happen to be the bolt next to where the leak from the gasket is.

The biggest problems I’ve had with Woody are things I done myself!  Argh!
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zevenenergie
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Re: Thread inserts Engine case cover
Reply #5 - 02/22/24 at 12:29:04
 
I think all your problems are related to not wanting to do what you need to do. By negating this from resistance you create more work and annoyance.

That's why I talk about effortless consciousness. You practice that by staying away from your resistance.

Zen and the art of motorcycle maintenance.
Its not just bull, is a real way of life. Cool

And it is practical. Real spirituality always is.
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Re: Thread inserts Engine case cover
Reply #6 - 02/22/24 at 12:47:55
 
Thanks for the spiritual enlightenment, philosophy, and free unsolicited psychiatry.  

There is a difference between maintenance and self-inflicted repairs.  I'm fine with basic maintenance, and I'm not in denial about how it is probably best repaired.  I raised the question, remember....

Just asking about other ideas.  Not a psychological evaluation.  I'm pretty aware of my personality defects.  I hope you are aware of how you are perceived by others.
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zevenenergie
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Re: Thread inserts Engine case cover
Reply #7 - 02/22/24 at 13:47:14
 
I,m just being me.

Maybe you can drill it deeper and tap it deeper, put a longer bolt in.
But I think you should take te effort and stay whit your first and best option and stop fu*cking around.
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Re: Thread inserts Engine case cover
Reply #8 - 02/22/24 at 15:20:10
 
On things that screw into aluminum that have very small threads....maybe it is best to use the torque at the lower end of the range - not the higher one!  When I tighten the side case bolts I use a 1/4" drive ratchet and one hand.....I just snug them up.  If the pieces are flat they don't need a lot of torque to hold them together.

Check and see how deep the hole is (as Zevenenergy mentioned).  Maybe you can use a longer screw.
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Re: Thread inserts Engine case cover
Reply #9 - 02/23/24 at 02:40:25
 
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Re: Thread inserts Engine case cover
Reply #10 - 02/23/24 at 06:05:33
 
Thanks guys.  To make matters worse, it seems the bolt snapped in the hole.  I can’t tell for sure.

I’ve never done a thread insert on an aluminum part (only in wood).  I’m trying to learn and understand how the thread insert is going to stay secured in the hole.
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ThumperPaul
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Re: Thread inserts Engine case cover
Reply #11 - 02/23/24 at 06:23:47
 
Dave.  I used a 1/4” ratchet and hand tightened snug.  But not trusting my wrist and hand as a torque wrench, I pulled out the 3/8” digital torque wrench (with fresh recharged batteries) and went around the horn.  So much for trying to be technically precise and tight.  I blame the manual - it should have told me 11n.m. as the upper end of the torque range.
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Re: Thread inserts Engine case cover
Reply #12 - 02/23/24 at 08:46:28
 
Thoughts on these?  The M10-1.5 external threads might be too big.  There isn’t a lot of material space diameter where my bolt hole is located.  And getting the hole straight and insert threaded straight and getting it flush with the engine case while the motor is in the frame sounds very intricate and tricky for a knob like me.  https://www.amazon.com/Z-Externally-Threaded-Stainless-Internal/dp/B002KVAWWI...
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zevenenergie
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Re: Thread inserts Engine case cover
Reply #13 - 02/23/24 at 12:40:45
 
You need these:



In Europe we call them helicoil, you must have size m6. The set contains a drill and a tap and tools to insert the insert.
If you do it right it will become stronger than it was.

https://www.youtube.com/watch?v=zAXVvhpnuUU

But if your bolt is broken off, you still have a chance to remove it. If you have broken it, then the piece that is in it is not stuck.
You then drill a hole in it and insert a special tap and you twist it right out.
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ThumperPaul
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Re: Thread inserts Engine case cover
Reply #14 - 02/23/24 at 14:19:38
 
Thanks.  I saw these hellicoils and M6 kits.  You’re right.

I have an extractor set.  But can I get it down in the hole to remove the piece of bolt is the question.  And if I start tapping in the removal tool, what kind of further damage can I inflict upon myself!

I haven’t dug in yet.  Waiting on parts and then I’ll sit down and do everything at once.  I am dealing with my own “negative energy” about it right now.

Thanks.
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