Flywheel bolt threads stripped

[Peyton10p]

the car is a 2018 mustang gt .I was doing a clutch install and upon reinstalling the new clutch ,one of the flywheel bolts ate the threads unsure on how to go about drilling and taping new threads in and where or how to get a replacement bolt . Any suggestions ???

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[SheepDog]

the car is a 2018 mustang gt .I was doing a clutch install and upon reinstalling the new clutch ,one of the flywheel bolts ate the threads unsure on how to go about drilling and taping new threads in and where or how to get a replacement bolt . Any suggestions ???

So you are saying that the threaded hole in the crankshaft is stripped?

 

[SheepDog]

The bolt is a 10mm x 1.0. Depending on how badly you F'd up the threads, you can use a Rethreading tap. If they are really bad, you need an actual tap.

The part number for the bolts is JR3Z-6379-A

https://lmr.com/item/LRS-6379JK/2018-2019-5-0-mustang-flywheel-bolt-kit

LMR is in Texas, so they could probably get them too you quickly

 

[Peyton10p]

So you are saying that the threaded hole in the crankshaft is stripped?

Yes

 

[Cobra Jet]

And if the holes speaking of are in the crank and it’s messed up again while attempting a tap repair …. Time for a new crank…and that will be one hell of a clutch job $$$$.

 

[AZlb5.0]

And if the holes speaking of are in the crank and it’s messed up again while attempting a tap repair …. Time for a new crank…and that will be one hell of a clutch job $$$$.

Took the words out of my mouth. I’d have that professionally done.

 

[SheepDog]

You can also install a heli coil if the threads are so badly damaged that they cannot be restored.

 

[HAVOC_5.0]

the car is a 2018 mustang gt .I was doing a clutch install and upon reinstalling the new clutch ,one of the flywheel bolts ate the threads unsure on how to go about drilling and taping new threads in and where or how to get a replacement bolt . Any suggestions ???

Any pictures of said threads so we can see exactly where you're talking about?

 

[Cory S]

I just want to know how this can even happen……

 

[SheepDog]

I just want to know how this can even happen……

The only thing I can think is that OP either used a power tool to start the bolts, or perhaps didnt have the holes lined up correctly, as the holes are not equidistant from each other. Option 3 is that this is OP is a troll since no photos or responses have been provided when several people have tried to help.

 

[frestylmotox01]

You can get those bolts directly from your dealer, I snapped one of my new bolts when I was doing my clutch two weeks ago on my 18, they were only $1.50 a piece direct from ford who was able to get them for me next day vs other vendors who sell them in sets of 8 for $30 + dollars. So if you have a local dealer, check with their parts counter.

Should still be the "JR3Z-6379-A" part number. Good luck fixing it, I shit a brick when I snapped my bolt thinking I was going to have to replace my crank. I'd also be curious how you stripped it?

 

[80FoxCoupe]

In Cincinnati there is a mobile guy that specializes in broken bolts/studs, stripped threads, helicopter coils etc. All the dealships here use him. He has all the tools and knows all the tricks. I'm sure there are more like him in every big city. Maybe ask dealership techs who they use?

 

[KingKona]

So you are saying that the threaded hole in the crankshaft is stripped?

Yes

Oh sweet Lord baby Jesus........

 

[Cory S]

, helicopter coils etc.

Man, I haven’t seen those yet!!!

 

[80FoxCoupe]

Man, I haven’t seen those yet!!!

LOL. Smart phone they say.... I'm leaving it cause helicopter coils are way cooler than heli coils all day long.

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