Enlarging header bolt hole in head
Enlarging header bolt hole in head I also posted this in external because it seems like it could go either way.
I'm tired of these 8mm header bolts. Every set of heads I buy have atleast half of the 8mm header bolt holes coiled. Coils hanging out a thread, or somehow the coil is rolled over and won't thread... The uncoiled holes barely have thread in them... I'm sick of it.
My question is: Is there any reason why I can't coil it to 9x1.25 or even 10x1.25/50. Is there enough meat to safely do this? Or do I need to fight with these old 8x1.25 coils and put new coils in the uncoiled holes...
Thanks
I'm tired of these 8mm header bolts. Every set of heads I buy have atleast half of the 8mm header bolt holes coiled. Coils hanging out a thread, or somehow the coil is rolled over and won't thread... The uncoiled holes barely have thread in them... I'm sick of it.
My question is: Is there any reason why I can't coil it to 9x1.25 or even 10x1.25/50. Is there enough meat to safely do this? Or do I need to fight with these old 8x1.25 coils and put new coils in the uncoiled holes...
Thanks
there is also something else besides a helicoil, called a keensert, we use them at work on our equipment, You drill the hole out and tap it then thread the insert in and knock the locking tabs that are on it in, it is made out of steel, so no more stripped aluminum.
That sounds exactly like a heli-coil to me. Maybe a different manufacturer?
