SNAPPED MAIN BOLT HELP ME ! M20 help pics up

[e30m20TurbO7]

hi i snapped one of the bolts while trying to torque the main caps
number 7 cap bolt snapped
posting pics right now
pleas help need help asap

[e30m20TurbO7]

the first pic is of a hole with out a bolt in it
the second one is the picture with the bolt in it for comparison

[e30m20TurbO7]

[Cletonius]

Try a left hand drill bit?

[SmokeE30]

yea left hand drill bit would be your best bet, nothings going to make that easy though, i personaly would just find another block as you already appear to have it all torn down that would be the easiest route

[paperplane94]

When you drill a hole in the bolt for the left hand bit, make sure the hole is EXACTLY in the center of the bolt.

[jlevie]

Your best bet is to make a guide bushing to drop into the hole and try a left hand twist drill.

[paperplane94]

Please elaborate on the guide bushing technique.
Broken bolts happen are bound to happen to all of us.

[e30m20TurbO7]

yea left hand drill bit would be your best bet, nothings going to make that easy though, i personaly would just find another block as you already appear to have it all torn down that would be the easiest route

New block would have been a bitch
Thanks for your guys help
Anyone got the correct torque specs for the main caps

[Aluke123]

The Bently says it's like 14.5ft/lbs + 70 degrees. I did mine a few months ago.

[FLG]

Just some info for future ref...done it tons of times on exhaust manifold bolts that snapped.

Break out a welder and weld a nut to the bolt, grab a socket or wrench and it'll come right out, weld dosnt stick to the cast.

Sent from my Galaxy Nexus using Tapatalk 2

[tinkerputzer]

The Bently says it's like 14.5ft/lbs + 70 degrees. I did mine a few months ago.

That is rod bolt torque spec. Mains are 45 ft/lb. You should really have this info available to you if you are building a motor.