701M BLOCK ENGINE NUMBER P30477

[RichardHawkins]

Leslie,

Don’t beat yourself up about breaking a 1/4” tap which I assume was a corse thread. I think that is the easiest size to break. When I was an apprentice we had our own spark erosion machine, “not another 1/4” tap!” was the cry from the man who used the machine.

Richard Hawkins

[512BB]

No, I am not Richard, sh1t happens sometimes. I am wondering, for the future, if one can actually buy a 1/4" UNC tap that is not waisted, or is it waised to aid swarf removal? Will have to look into it. TBH, I was more annoyed about the company scratching one end face of the block than the broken tap. Oh well.

Leslie

[mbell]

You can buy specific thread chasers, which are designed to clean and fix minor thread issues. So also don't risk damaging the thread. Don't know if there any more snap resistant thou.