broken bolt
02-23-2005, 05:15 PM
#1
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Join Date: Aug 2003
Location: wilmington, nc
Posts: 48
broken bolt
alright.. i was installing my head and i was torquing down the bolts for the cam clamp (??) to 2 Nm and on 9 and 10 (first cam clamp on the left (looking at it from the front)) the bolts snapped. My CRAFTSMAN torque wrench didnt click when it was there! i thought it did on the first one, but when it did it to the second one, i took a second look and they are snapped right at the top of the opening on the head.
What can i do to get it out? thanks. :wtf:
i guess i can try EasyOut, but the bolt is pretty small!
What can i do to get it out? thanks. :wtf:
i guess i can try EasyOut, but the bolt is pretty small!
Last edited by epoxy; 02-23-2005 at 05:25 PM.
02-23-2005, 06:34 PM
#3
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Join Date: Jun 2003
Location: Albany, NY
Posts: 609
Go to sears, buy this:
http://www.sears.com/sr/javasr/produ...id=00952152000
follow the directions on the package, take your time, dont rush.
Use a variable speed drill in reverse on slow with ALOT of cutting oil and clean the bit VERY frequently.
You will thank me later. I got 2 exhaust mani bolts out of an RB25 head first try in 10 mins each without a single damaged thread.
What is your torque wrench set for, is it a 120 o rhigher ft lb torque wrench? They make lower level torque wrenches for lower torque bolts. The higher torque wrenches arent as accurate down low.
http://www.sears.com/sr/javasr/produ...id=00952152000
follow the directions on the package, take your time, dont rush.
Use a variable speed drill in reverse on slow with ALOT of cutting oil and clean the bit VERY frequently.
You will thank me later. I got 2 exhaust mani bolts out of an RB25 head first try in 10 mins each without a single damaged thread.
What is your torque wrench set for, is it a 120 o rhigher ft lb torque wrench? They make lower level torque wrenches for lower torque bolts. The higher torque wrenches arent as accurate down low.
02-24-2005, 05:46 AM
#5
Contributing Member
Join Date: Apr 2004
Location: PA
Posts: 732
I had to do the same thing on 2 exhaust studs on my RB20. I used a carbide cutter on a dremmel and hollowed them out and then used a drill extractor. DONT USE CHEAP DRILL EXTRACTORS!!!! I had to cut one of those out cause I just used the first one I could find in the drawer, and even the cheap ones are hard as hell, so it wastes alot of time cutting through them. Even with carbide its not gonna be a 5 minute job, and a regular drill bit, forget it. Any kind of hardened bolt on a motor will just laugh at a regular drill bit.
02-28-2005, 08:45 PM
#8
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Join Date: Mar 2004
Location: Washington State
Posts: 573
Seems to be a problem with the Rb's, I had to remove 3 myself from my engine. They looked loose and when I went to torque them down they just broke off. They looked crystalized like the metal was too high grade. I got some nice gummy grade 5 studs and haven't had any problems since.
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