I got 2 stripped bolt holes on my H22 block to where the tranny bolts in. I ordered the Perma Coil 106-612 M12 1.25 helicoil inserts. I drilled the holes out with the 31/64 drill it said on the package. I can't find what size tap I need for the helicoils. I've never done these before if anyone here has experience with these please help me out!

Thanks

 

Helicoil kit should have come with the tap. They are not standard tap sizes.

 

Nope it came with 6 helicoils no tap.

 

That is because you purchased just the inserts and not the install kit that comes with inserts.

https://www.threadkits.com/perma-coi...kit/3221-m12f/

 

Ok thank you, went to 3 stores looking for a m12 1.25 tap fml..