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Old 01-19-2021, 10:06 PM #1
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skid plate holes stripped, advice???

so as I'm coming up on 300k miles 2 of 4 front skid plate bolt holes are stripped. The front mount had been stripped since I got it and ran a bolt and nut. Rear mount has a nut welded inside i think. Anyone ever had to drill out and re-thread? Thanks in advance!!
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Old 01-19-2021, 10:43 PM #2
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Quote:
Originally Posted by HIMILESV8SPORT View Post
Anyone ever had to drill out and re-thread? Thanks in advance!!
Yeah its a pain in the butt. I hated drilling upside down and tapping by hand while pushing up. Maybe my drills and tapped were mediocre quality or something, but it was not very fun

For another project, I used something like this on some double layer 1/8" (so essentially 1/4") and they worked decent as long as you make sure to clear the chips by reversing and lube it up. They might be easier since it gets everything done in one sweep
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Old 01-19-2021, 11:04 PM #3
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Tap em and use an oversize bolt if you are comfortable doing that
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Old 01-20-2021, 12:04 AM #4
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I used Time-serts to fix the stripped holes. All 4 on my front skid were stripped. One on the front I couldn't save and ended up drilling it out to run a bolt and nut. The other 3 all have Time-serts. Sort of like Helicoil but better.

Amazon.com: Time-Sert M10x1.5 Thread Repair kit #1015: Home Improvement
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Old 01-20-2021, 12:09 AM #5
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You don't need to drill unless the bolts are stuck in there. Usually they just won't tighten.

Get a 8mmx1.25 tap and chase the threads out, get the same size bolt from lowes in stainless steel and you will be good to go. I think the length is 20mm.
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Old 01-20-2021, 12:41 AM #6
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skid plate holes stripped, advice???

I drilled and tapped all of mine to M10 just to have a bigger bolt. Stock thread is M8x1.25. I wanted to go that route but I couldnít find one at ace hardware on a Sunday I was doing this, so I used M10x1.50.

I used my drill to tap instead of a tap handle by hand. You just need to use some thread cutting cream and go slow, in and out to remove chips.

Took me 30 min to do all of them.


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Old 01-20-2021, 02:35 AM #7
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I have the same problem.. 3 of my 4 bolts have snapped off, whoever changed the oil before i got it must have way overtightened them and now iíve been driving with zip ties holding it on the last few weeks. I plan on just drilling them out and through-bolting with a longer 10mm and a nut/ washer. A bit more crude but i already snapped a couple bits trying to drill them out the other day- drilling metal at that angle sucks!
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Old 01-20-2021, 09:00 AM #8
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Rivet nuts

Check out a rivet nut kit. That's what I have used on mine and even a lot of farm equipment. Time-serts are great. Much better than heli-coils. I like the rivet nuts because I could use a larger drill bit and cut the frame and weld on the nut. I didn't have to be so precise drilling and tapping the nut welded inside the frame. They also sell stainless river nuts. Get you some corse thread stainless bolts for whatever size rivet nut you use. Be sure to put some never seize or grease on the threads of whatever bolts you use.
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Old 01-20-2021, 10:29 AM #9
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Quote:
Originally Posted by yourfriendcasey View Post
I have the same problem.. 3 of my 4 bolts have snapped off, whoever changed the oil before i got it must have way overtightened them and now iíve been driving with zip ties holding it on the last few weeks. I plan on just drilling them out and through-bolting with a longer 10mm and a nut/ washer. A bit more crude but i already snapped a couple bits trying to drill them out the other day- drilling metal at that angle sucks!

Get some sharp bits. Go slow, start with small bits. Use some oil as cutting fluid.

Drill out for the next size up and use an M10 tap to retap for M10 bolts. No need to thru bolt.


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Old 01-20-2021, 11:23 AM #10
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I drilled the holes out with a metric 8.5mm drill bit, tapped with an M10x1.5 tap and replaced bolts with higher quality ones. Old motor oil for cutting fluid. Worked like a charm and very very easy
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Old 01-20-2021, 11:32 AM #11
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Replace the bolts with studs. Easier to repair if stripped again

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Old 01-20-2021, 02:39 PM #12
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Thanks everyone

Really digging the stud idea after going from M8 to M10
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Old 01-20-2021, 04:26 PM #13
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Quote:
Originally Posted by HIMILESV8SPORT View Post
Really digging the stud idea after going from M8 to M10
all posts above are good options to do this. i had 2 of the 4 front skid bolts break on mine & it was very easy to drill them out to just under the thread size & then use a tap of the original size to clean out the threads & buy new correct size bolts & use anti seize. going one size bigger is fine but not needed if you can save the original threads.
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Old 01-21-2021, 12:39 AM #14
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I used M8 rivnuts
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Old 01-21-2021, 01:01 AM #15
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I drilled the factory nuts out and welded new nuts on top of the factory nuts.


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