Injector hold down bolt snapped
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Senior User
Joined: Mar 2012
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From: Jenkintown, PA
Injector hold down bolt snapped
Lesson of the day: don't trust your buddy's cheap torque wrench. It just gave new meaning to the expression "tighten until it snaps and then back off a quarter turn". 
I will try drilling and using a stud extractor tomorrow. Anyone know of a better way to remove a snapped off injector hold down bolt?
Before anyone asks, I do know the difference between in-oz and ft-lb
Chris
I will try drilling and using a stud extractor tomorrow. Anyone know of a better way to remove a snapped off injector hold down bolt?
Before anyone asks, I do know the difference between in-oz and ft-lb
Chris
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
It should come out relatively loosely. I would remove the injector first and see if it's flush or above, since it would remove pretty easily if it wasn't flush.
Left hand drill bits, would be great for this too.
Left hand drill bits, would be great for this too.
PREMIUM SPONSOR
Joined: Feb 2009
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If you need one I have some core engines I can send you a couple for free. I would also use new copper washers as well.
Cargo Master
Joined: Apr 2009
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From: Man Cave
Jeez , so I need copper washers as well ?????
Go Bills !
Joined: Jan 2008
Posts: 2,778
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From: Buffalo, NY
I think i would ***** punch the center of the busted bolt. Then use a lefty drill as well.. Drill a small hole first.. Then drill with another drill but an increased size. The increased size will grab in the pilot hole .. I would use both lefty drills encase she wants to come out on the pilot drilling. If then that don't work after those two attempts, you will still have the option of the e-z out. I love my set of lefty drills and e-z outs. Saved my **** a million times. Money well spent. Good luck
is a BAAAD MAN
Joined: Apr 2005
Posts: 3,738
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From: Winston Salem NC
Happened to me too. I pulled the injector and it came out with my hand. I though, miscalculated the conversion to inch pounds heh heh, Never was good at math.
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Post Fiend
Joined: Nov 2007
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From: Payson, AZ
120 lb/in = 10 lb/ft. Remember: 12 inches in a foot.
Reminds me of an old joke.
Q. Why isn't your nose 12 inches long.
A. Than it would be a foot.
Reminds me of an old joke.
Q. Why isn't your nose 12 inches long.
A. Than it would be a foot.
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Senior User
Joined: Mar 2012
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From: Jenkintown, PA
Thanks for the replies and suggestions guys. It was actually the upper bolt that snapped. Some of them were kinda loose so I was going down the line prior to installing the injectors when cylinder 4 let go. It snapped about 1/4 inch below the top of the head, right where the threads start and the shoulder ends.
I tried a small drill and easy-out but had a hard time keeping the bit centered on top of the sheared bolt. I'm leaving for a few days vacation tomorrow, so I'll probably try again next week. Never should have started the project late in the day
I tried a small drill and easy-out but had a hard time keeping the bit centered on top of the sheared bolt. I'm leaving for a few days vacation tomorrow, so I'll probably try again next week. Never should have started the project late in the day
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Senior User
Joined: Mar 2012
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From: Jenkintown, PA
I really appreciate the offer. Not sure who would have that bolt locally.
I have new o-rings and copper washers, and the injectors haven't been torqued down yet (it was the upper bolt that snapped prior to injector instalaltion). You should have my shipping information from previous orders but I will send you a PM with it just in case.
Chris
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Thanks Clay,
I really appreciate the offer. Not sure who would have that bolt locally.
I have new o-rings and copper washers, and the injectors haven't been torqued down yet (it was the upper bolt that snapped prior to injector instalaltion). You should have my shipping information from previous orders but I will send you a PM with it just in case.
Chris
I really appreciate the offer. Not sure who would have that bolt locally.
I have new o-rings and copper washers, and the injectors haven't been torqued down yet (it was the upper bolt that snapped prior to injector instalaltion). You should have my shipping information from previous orders but I will send you a PM with it just in case.
Chris
Senior User
Joined: Jul 2006
Posts: 395
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From: New Hampton, IA
What a great guy you are Clay, I knew there was a reason I keep shopping at your fine establishment.
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Senior User
Joined: Mar 2012
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From: Jenkintown, PA
I just ordered a selection of left hand drills from Mcmaster-Carr. Won't be able to try them until I'm back from vacation, but I will post the results then.
Chris
Cargo Master
Joined: May 2010
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From: Snohomish, WA
Use a electric or pneumatic engraver. The vibrations from the tip will allow the bolt to move. Just angle the engraver to the left (remove) and it should work the bolt around. I use this method all the time and it will most always work every time.
Reps to Clay, for helping everyone out!
Reps to Clay, for helping everyone out!
Senior User
Joined: Jul 2006
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From: New Hampton, IA
I can usually get bolts out with left hand drill bits but if they don't work then you have a hole to use an ez out.
I like woodnthings suggestion, it is worth a try to get the bolt out without risking getting shavings in the engine before resorting to drilling.
I like woodnthings suggestion, it is worth a try to get the bolt out without risking getting shavings in the engine before resorting to drilling.