Axle nuts - thread lock 271 vs 272
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
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From: Virginia
Axle nuts - thread lock 271 vs 272
I am going to change my axle nuts sometime soon so I ordered some loctite 272 and was shipped loctite 271. Do I need to return it and get the 272 or is the 271 okay to use? From what I can tell the 272 is rated for a little higher temps. Thanks
Race Director
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From: Eastern
Loctite 272 is higher strength and much better resistance for thermal differences, better for vibration and shock, preferred for larger threaded nuts and bolts over 1" in diameter. Also, 272 offers better corrosion resistance. 271 is meant for smaller nuts and bolts under 1" in diameter.
I used 272 when I changed my axle nuts for those reasons.
I used 272 when I changed my axle nuts for those reasons.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
Loctite 272 is higher strength and much better resistance for thermal differences, better for vibration and shock, preferred for larger threaded nuts and bolts over 1" in diameter. Also, 272 offers better corrosion resistance. 271 is meant for smaller nuts and bolts under 1" in diameter.
I used 272 when I changed my axle nuts for those reasons.
I used 272 when I changed my axle nuts for those reasons.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
Yeah I read that somewhere and may end up doing that because not only was a sent the wrong type of loctite but I’ve also realized what I was sent is fake. I bought it from an EBay seller and apparently there’s a lot of counterfeit bottles on there. The bottle has a bunch of Chinese writing on it and doesn’t have a legit QR code on it like it’s supposed to. It’s a large bottle that’s filled about 1/4 if that… No way I’m using that crap on my car.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
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Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
Race Director
Joined: Sep 2009
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From: Eastern
Here is the thread.
Depending on the year, service manuals show 118, 160 and 151. It's confusing, thus why I split the difference and did it at 140. The ZR1 uses Nord-Lock washers that prevents the axle nut from backing off. I thought about getting some if these, but sre not readily available in my home town.
https://www.corvetteforum.com/forums...-torquing.html
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
Probably the most discussed subject in the early years was what the correct torque value for the rear axle nuts. They started with 118, then to140 and in 2009, increased to 160. Some cars with the 160 values snapped their axles, so in 2011 GM reduced the torque back to 140 according to the GM tech Talon 90. I torqued my new axle nuts to 140ft-lbs and used the old nut to lock against the new one, also at 140 ft-lbs.
Here is the thread.
Depending on the year, service manuals show 118, 160 and 151. It's confusing, thus why I split the difference and did it at 140. The ZR1 uses Nord-Lock washers that prevents the axle nut from backing off. I thought about getting some if these, but sre not readily available in my home town.
https://www.corvetteforum.com/forums...-torquing.html
Here is the thread.
Depending on the year, service manuals show 118, 160 and 151. It's confusing, thus why I split the difference and did it at 140. The ZR1 uses Nord-Lock washers that prevents the axle nut from backing off. I thought about getting some if these, but sre not readily available in my home town.
https://www.corvetteforum.com/forums...-torquing.html
Melting Slicks
Joined: Dec 2017
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From: Baie-D'Urfe, Quebec
2023 Corvette of the Year Finalist - Unmodified
2022 C6 of the Year Winner - Unmodified
another vote for double-nutting. Learned this long long ago, on another type of car that I tracked and had multiple wheel bearing issues. One of the first things I did on this car.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
Melting Slicks
Joined: Dec 2017
Posts: 2,008
Likes: 916
From: Baie-D'Urfe, Quebec
2023 Corvette of the Year Finalist - Unmodified
2022 C6 of the Year Winner - Unmodified
Melting Slicks
Joined: Dec 2017
Posts: 2,008
Likes: 916
From: Baie-D'Urfe, Quebec
2023 Corvette of the Year Finalist - Unmodified
2022 C6 of the Year Winner - Unmodified