Broken Oil Pickup Bolt HELP!

[JMofIRW]

Hey sorry to ask this question.

Basically my 7M is in the garage I have been slowly rebuilding (school/work full time makes it hard).


I broke the 12mm head 8x 1.25 short bolt at the base of the pump. It was about 20 degrees in the garage and I suppose that caused an issue for my torque wrench.

SO

I just would like some suggestions. My racing engine shop said anywhere from 50-100 bux, and another shop said 20-80.

I bought bolt extractors, grabits, and whatever else I thought would work to no avail.

I don't want to damage the block so I am really worried.

(I have experience with taps and helicoils, but like I said I do not want to damage the block)

 

[mdr40z]

grind a slot in it if you can reach it with a dremel cut off but then use an impact screwdriver

 

[IJ.]

"Big Bolt"??

Do you mean the 12mm head 8x 1.25 short bolt at the base of the pump?

 

[JMofIRW]

Yes IJ that is the one, it is the larger of the 2 bolts. ( I edited my post with you're exact identification of the bolt)

mdr40z I will keep that in mind, that sounds like a good idea. I think I may be able to got a dremel in there and do that.

 

[hvyman]

Drill a tiny hole down the middle and use a extractor.

 

[IJ.]

Drill a tiny hole down the middle and use a extractor.

x2, smear some grease on the drill to catch the chips.

 

[JMofIRW]

OK I will Try, but I have had no success with the extractors, but I shall try. Thank you guys...

 

[mkiiichip]

If the bolt broke from over-tightening, extractors should work, no problem.
If the bolt broke from cross-threding (or bottoming out), your SOL, and need to drill and tap the block to a larger size, and use a larger bolt, or an insert.