DIY "poor boy" permanent thread repair using common tools

[nimblebee]

If you're like the rest of us you will eventually strip out a thread for one of the access covers of the motor.

There are various workarounds to take care of this & I'm not going to discuss any of those well-known solutions.

What I am going to talk about is a "poor boy" solution that works as good as expensive solutions.

Take steel screw that has stripped out threads in the aluminum body, and coat screw with anti-seize compound.

Thread nuts onto steel screw, these will become the new threads inside aluminum body.

You will use permanent thread locker when tightening nuts together, to get enough length of threads for steel screw.

Once enough nuts permanently threadlocked to give a decent amount of threads for screw, put steel screw with nuts into drill, and running drill with screw in it, use rotary tool to grind down outside of nuts into a cylinder.

Grind down nuts into cylinder fitting into standard drill size hole.

Now use correct size drill for threaded clyinder, and drill out bad threads in aluminum body.

Insert threaded cylinder with steel screw into hole drilled in aluminum body, using permanent thread Locker to secure new threads into aluminum body.

Because the steel screw coated with anti-seize compound, thread locker on nuts will not affect steel screw, and once thread locker has cured, unscrew steel screw and you will now have new threads in the aluminum body.

That is one "poor boy" work around that is effective, if you don't mind spending extra time & effort rather than just reaching for a professional thread repair tool.

"The nicer the nice, the higher the price" $ tool VS thread locker, anti-seize and cheap nuts!

 

[wrench]

Bad advice Dude,
This must be your first CG motorbike engine, soon you'll discover the parts to keep it running cost money

Poor Boy my AZZ, He's got tools a drill, drill bits, and Loctite - Loctite is expensive
Besides how the heck does he afford gas, oil , tires and tubes LOL...

If ya can't afford to maintain a motorbike ya got no business owning one, Soon it'll be junk
I could tell you what's gonna happen if you try the "poor boy" technique
But I'll let you find out for yourself why it won't last long and why you'll end up ruining the case or jug

Don't play (tweak) on it, Fix it right the first time. It's not expensive

I'll tell the new comer how to repair pulled (stripped) threads the correct way

Basically 3 types of Threads on a CG engine
5mm
6mm
8mm

8mm and 6mm threads are the most likely to pull out (strip) yes, aluminum threads pull out

To repair 6mm threads use a 1/4" x 20 tpi tap - blind tap for blind holes Cost $4 -$8 AMAZON
Who knows maybe the poor boy has a 1/4" x 20 tap in his tool box

1/4" x 20 is the next bolt size up It's so close you won't even have to drill out the hole first
1/4" x 20 threads are more course than 6 mm x 1.0 mm threads and less likely to pull out again
This is the common fix for pulled (stripped) 6mm threads in aluminum motorcycle cases

If the 1/4" x 20 threads pull out then it's time to install a 6mm Heli Coil
6mm Heli Coil Kit $7 on AMAZON and ya get 25 coils

To repair 5mm threads buy the $6 Heli Coil kit on AMAZON and ya get 25 coils
To repair 8mm threads buy the $8 Heli Kit on AMAZON and ya get 25 coils

Recycle some aluminum cans and plastic bottles if ya can't afford it LOL...

If your hobby is motorbikes your gonna need it
That's alot of coils to repair alot of stripped (pulled) threads
Now ya got the stuff to fix it right , Believe me you'll be happy you did it right the first time