G37 Sedan

Stripped front crossbar bolts

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Old Aug 24, 2017 | 03:31 PM
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monty2003
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Stripped front crossbar bolts

I forgot that the torque listed in the FSM is Newton Meters (NM) and the second value in the brackets is Ft. Lbs. I torqued the two outer mount bolts (attempted to anyhow) on the front crossbar (AWD) to 63 Ft Lbs and they kept turning. Turns out I should have torqued to 46.

Anyone have any knowledge about what these bolts screw into? Any likelihood that I can use a size larger bolt size and retap the hole?

Here's the snap from the FSM showing the bolts I messed up.


Brian
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Old Aug 24, 2017 | 04:55 PM
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It's a pain in the azz, but your best option is probably to drill it out and use an EZ-Lok insert.
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Old Aug 24, 2017 | 05:53 PM
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drill it and re tap it a lil bigger
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Old Aug 25, 2017 | 09:51 PM
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Looked in my tap kit and had an M11x1.5 but could not find an M11 bolt anywhere.

Found M10 x 1.25 thread repair kit at Napa for $65 bucks (the right bolt). Amazon had the kit for $29 but I didn't want to wait a few days.

Found M10 x 1.5 thread repair kit at advance auto for $23 and bought it.
Drilled the old threads out with a 13/32 bit, tapped both holes it with the provided tap, inserted the helicoils, broke off the tabs, and torqued the new M10 x 1.5 bolts down to 40 ft-lbs. Was surprised at how easily the old threads came out and how easy it was to tap. It was soft metal.

All is good.

The next size up bolt that I could find at the hardware store was M12x1.5 and that's a big bolt! Instead I tried to stay as close as possible to the original size.

First time using a helicoil and it was easier than I thought. The EZ LOK inserts are nice but they are thick which requires a big hole so I went with the coils.

Thanks guys.

Brian
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Old Aug 25, 2017 | 10:00 PM
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AARONHL
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Ya bro I forgot to say heli coil those things things are awesome
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