Broken frame to engine bolts

[ptsg]

Here is the Branson torque specs chart:

 

[Slowpoke Slim]

Thanks for the chart Ptsg.

 

[tjkubota93]

If its going to be a few days anyway, I would start spraying oil on them now.

They might not need it, but it wont cost you anything but a few moments of precious time.

 

[5030]

Actually, the best penetrating oil is basically free or at least a whole lot cheaper than say PBlaster. Acetone and ATF. 1 part ATF to 4 parts acetone in a squirt bottle. All I use. Cuts rust and frees stuck bolts and assemblies.

 

[Jenkins003]

Thanks 5030, I've used ATF and acetone before to loosen frozen rotors and have had good luck with it. I'll spray some on the broken bolts. I purchased the transfer punches and an ez-out today but so far I can't find anyone around my area that sells left handed bits so I may have to order some. The bolts turned out to be grade 10.9 and M12 x 40mm with a 1.75 pitch.

 

[ericm979]

Be careful with the ez-out. They break off easily. When that happens you have a new more difficult problem. I've used extractors from Snap-on that had a long rod with splines on it, and a hex piece that slid over it so you could turn it. They're not super hardened like the ex-outs and won't snap like they do.

 

[fried1765]

Thanks 5030, I've used ATF and acetone before to loosen frozen rotors and have had good luck with it. I'll spray some on the broken bolts. I purchased the transfer punches and an ez-out today but so far I can't find anyone around my area that sells left handed bits so I may have to order some. The bolts turned out to be grade 10.9 and M12 x 40mm with a 1.75 pitch.

You can buy left hand bits on line from Drillhog.com
Their Molybdenum bits, or their Niobium bits would be a good choice.
Be VERY CAREFUL with ANY E-Z-outs!
When you break them, you will have a real disaster on your hands.

 

[5030]

Actually, if you soak the busted bolts with the ATF / Acetone mix for a couple days prior to, they should come right out so long as they aren't bottomed in the threaded hole. For easy out's I use the the square ones that you drive into the drilled hole with a small hammer. I prefer them over the spiral ones and I use a regular twist drill not a left hand drill. I just blow any chips out with a blow gun.

" Niobium bits" Is that related to unobtanium?

 

[Jenkins003]

You can buy left hand bits on line from Drillhog.com
Their Molybdenum bits, or their Niobium bits would be a good choice.
Be VERY CAREFUL with ANY E-Z-outs!
When you break them, you will have a real disaster on your hands.

Thanks fried1765 for the info. I just ordered the 5 pc Niobium set. I feel safer using the left handed bits than the ez-out.

 

[5030]

You may have to use both but I doubt it.