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How strong is red threadlocker 271?

toolaholic

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Joined
Jul 26, 2012
Messages
2,123
Location
PA
Hi all,when I did the timing cover of my daughters Chevy lumina I mistakenly used a 7/16 20 in crank snout instead of the proper 12mm 1.5 to push balancer on( I know to check treads of bolt then choose proper thread size to put on snout. Balancer used 3/16 16 holes for removal that threw me off) I tapped threads and put balancer on w/ the proper 12 1.5. Balancer could of went a additional 1/16 of inch but belt tracks and wears fine. I guess my makita 6952 corded impact driver at 88 lb ft ( factory spec for crankshaft bolt is 76, didn't want to go overboard with bad threads)didn't seat it that last 1/16. I got close with kd balancer installer but didn't want to keep cranking w/ damaged threads. Thought the makita would move it that last little bit.Damage is about 60% good. 40% bad. I used red threadlocker as insurance. Didn't realize it could of went on more til a month and 500 miles later. Belt tracks a 1/8 inch further out on tensioner. You can see old groove and new outer groove. Figure the new gssket might be 1/16 thinner so balancer off 1/16. If i ever need to pull the balancer( to replace crankshaft sensor or be **** and push it on that last 1/16)do I need to hear bolt? My mechanic friend says my corded Milwaukee 9072 at 300 lb ft will break it free. I have my doubts. I agree with my friend to leave it alone but if that sensor goes it will need removed again. And I'm afraid with out heat that Milwaukee will pull threads and all out. My friend says red loctite isn't all it's cracked up to be.
 
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rcktsled

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Joined
Nov 28, 2007
Messages
355
Location
909 for Life
Yeah just about any impact should knock it loose. Worst case scenario, you may have to heat it for a few seconds with a propane torch. You certainly would not need or want to try oxy/acetylene. It's just a liquid plastic that cures in the absence of oxygen.
 

royesses

Well-known member
Joined
Mar 28, 2009
Messages
789
I've broken red threadlocked bolts loose with a 1/2" breaker bar. If you are worried just use a bernz-o-matic torch to heat the bolt up first.
 
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anndel

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Joined
Oct 28, 2015
Messages
3,270
Location
Hawaii, USA
I've broken bolts loose with a 1/2-in breaker bar and some with a 1/2-in air impact gun, no problem and all these bolts had red threadlocker on them.
 
OP
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toolaholic

Well-known member
Joined
Jul 26, 2012
Messages
2,123
Location
PA
Ok thanks! And the little bit of pulley misalignment of 1/16 " 1/8" maximum is fine as long as gatorback belt is tracking well, wearing well and is quiet. Hadn't blown up in a month and 500 miles. LOL
 
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