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D7u subframe bolts - will not drill out!land
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Help! Any advice for drilling out bolts? Or anyone got a copy of the LR Topix page for drilling and tapping subframe bolts?

Dropped front subframe to change a few bits on a 2013 L405 Range Rover.

Front and rear bolts are out. But the middle bolts each side snapped off in chassis rail. Plan was to drill them and helicoil them. But the drill bits we have are not doing the job. Managed to drill some material out of them, and then they just stopped! Tried sharpening bits, tried new HSS bits, tried a smaller bit to pilot drill it. Not making any progress.

Anyone got experience with this? Do we need a special drill bit to tackle these bolts?

Cheers!

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1 year ago