Drilling motor mount side bolts

[Will'smotobikes19]

Plan is drilling M6 holes on the side of my motor mount for M8x 1.25. I had one break off in the threads so planning on using M8 flanged bolts.

 

[Wrench]

If ya had a Metric bolt break it was probably a 8.8 or weaker, get a stronger bolt, Metric grade 10.9

 

[Chainlube]

Get NA 5/16 grade 8 bolts for there.

 

[Frogslayer]

It doesn't look like there is room for any bigger hardware in that picture because they are so close.

 

[Will'smotobikes19]

Flange makes the spacing look closer not all have the 2 bolts. Instead of 6mm the flange makes it look like 11mm.

 

[Will'smotobikes19]

Ok found a drillbit that will work for the 5/16 drilled 4 holes out but the crap chinese tap is made wrong meaning there's no taper at all and it won't grab. Ace hardware here I come. There shouldnt be taps that were not only made wrong but hardened with burs on them the dies were even worse. The mounting plate is thicker than the gasbike mounting plate, which is a joke here's the old one. Ebay mounting plates are better than gasbike's!. I have an ebay 49cc that has a forged rod, metal cam lobe and a better mount. Who again said ebay 4 strokes are the lesser? vs a cast aluminum rod plastic cam and crap mount really can't see how a $300 bikeberry kit is better than a $170 ebay kit ok rant over.

 

[Wrench]

Ok found a drillbit that will work for the 5/16 drilled 4 holes out but the crap chinese tap is made wrong meaning there's no taper at all and it won't grab. Ace hardware here I come. There shouldnt be taps that were not only made wrong but hardened with burs on them the dies were even worse. .

Do ya mind showing us a pic of this Tap ya think is crap? There are different types of Taps.
Sounds like ya got a Bottoming Tap. They hardly have a taper, Made for threading to the bottom of a blind hole
When ya need one you won't think it's crap

 

[Will'smotobikes19]

 

[Will'smotobikes19]

 

[Will'smotobikes19]

Ok tapped them for 5/16 with an irwin tap and the bolt works, threads seem a little shallow but nothing blue loctite can't fix.