AHS 1,440 #1 Posted January 28, 2023 Magnum engine cover/shrouds. Ive got a M16 that the stator is gone in, I’ve broken i of the bolts off. I always tighten before loosening. WD40 penetrating oil. Ive done everything but heated them up. I’m all answers! 1 Share this post Link to post Share on other sites
pfrederi 17,736 #2 Posted January 28, 2023 WD-40 is not a good penetrating oil. Liquid wrench. PB Blaster, Kroil Time let it soak in tap with a hammer. Get a helicoil set 1/4 NC you will probably break a couple before you are done.... I did... 2 Share this post Link to post Share on other sites
ebinmaine 67,462 #3 Posted January 28, 2023 11 minutes ago, pfrederi said: WD-40 is not a good penetrating oil. Liquid wrench. ** *******, Kroil Time let it soak in Agreed, ORIGINAL formula WD is not. WD-40 Company does make a Penetrating Oil. THAT I use and recommend. I've used the two quoted above and recommend them as well. My experience with PB has been nothing but strife .... 26 minutes ago, AHS said: always tighten before loosening Likely this'll be a key. Remember... Tighten loosen.... Repeat. Often many times with tiny incremental increases while working back n forth. 22 minutes ago, pfrederi said: probably break a couple before you are done.... I did Like Paul experienced, some just won't be removed. It took decades to get stuck. It may take weeks to be undone. 2 1 Share this post Link to post Share on other sites
peter lena 8,620 #4 Posted January 28, 2023 @AHS usually put kroil / on bolts/ screws on a regular walk around , the vibration of the unit does the rest , also use a very solid 6 pt socket or spring impact to assist removal. also a great spot for mechanical / electrical lug , for wiring connections , makes grounding additions easy . have them on battery cables, headlights , always have a go to spot , pete 1 Share this post Link to post Share on other sites
AHS 1,440 #5 Posted January 28, 2023 @ebinmaine it works good! Hang right on, I’ll be down with some! 1 Share this post Link to post Share on other sites
Achto 27,570 #6 Posted January 28, 2023 (edited) My new favorite penetrating oil out of a can is Sea Foam Deep Creep. One issue with the bolts that you are trying to remove is that they are steel bolts threaded into aluminum. These 2 metals do not get along together and usually end up corroding. When you reassemble use some blue Loctite, it will form a barrier between the two metals to keep them from corroding. These two metals not getting along is also why I always use never seize on spark plugs that are installed into an aluminum head. Edited January 28, 2023 by Achto 4 5 Share this post Link to post Share on other sites
squonk 41,096 #7 Posted January 28, 2023 When I get a nasty bolt I spray it with Deep Creep and walk away. come back in a while and hit it with PB Blaster and walk away. Come back and hit it with CRC Screwloose and walk away. Come back and take the bolt off. Then go sit down and rest! 3 1 3 Share this post Link to post Share on other sites
wallfish 16,995 #8 Posted January 28, 2023 36 minutes ago, squonk said: When I get a nasty bolt I spray it with Deep Creep and walk away. come back in a while and hit it with PB Blaster and walk away. Come back and hit it with CRC Screwloose and walk away. Come back and take the bolt off. Then go sit down and rest! Seems like your plethora of products for dealing with rusted bolts somewhat rivals Peter's lube collection! Plus you must have the patience and time of a monk. 1 6 Share this post Link to post Share on other sites
squonk 41,096 #9 Posted January 28, 2023 I aint turnin the heat on for him. Hope he brings a coat! 3 Share this post Link to post Share on other sites
Pullstart 62,846 #10 Posted January 28, 2023 Did anyone mention tapping the bolt with a punch? It’ll shock the threads loose. Also mentioned lately is a manual impact driver. They work wonders, shocking the threads and turning loose a bit at a time. An added benefit, is they are tapered to slip in your hand, instead of insisting on snapping the bolt. 2 2 Share this post Link to post Share on other sites
ebinmaine 67,462 #11 Posted January 28, 2023 4 hours ago, Pullstart said: Did anyone mention tapping the bolt with a punch? It’ll shock the threads loose. Also mentioned lately is a manual impact driver. They work wonders, shocking the threads and turning loose a bit at a time. An added benefit, is they are tapered to slip in your hand, instead of insisting on snapping the bolt. @AHS I like this MANUAL impact driver recommendation. 2 1 Share this post Link to post Share on other sites
AHS 1,440 #12 Posted January 29, 2023 Yup, all good recommendations! Thank you! Share this post Link to post Share on other sites
AHS 1,440 #13 Posted January 29, 2023 2 hours ago, ebinmaine said: @AHS I like this MANUAL impact driver recommendation. You mean a Milwaukee 1/2’ drive?! Every bolt would shear right off!! 1 Share this post Link to post Share on other sites
RED-Z06 2,221 #15 Posted January 29, 2023 I broke off one on mine, all were fully stuck but one refused...it came out about 2 turns and galled up, its not a lube issue as much as its the tendency for aluminum threads to roll when there is debris in the threads..once the aluminum rolls into the steel threads its over. I use CRC Knock Er Loose...its my go-to for spindle pulleys and bolts...if i can afford to give it a couple hours it will pretty much get it loose without violence 1 1 Share this post Link to post Share on other sites
RED-Z06 2,221 #17 Posted January 29, 2023 3 hours ago, AHS said: @RED-Z06 ok Which bolt is giving you trouble? Mine was the lower front bolt, hardest one to get at. 2 Share this post Link to post Share on other sites
AHS 1,440 #18 Posted February 4, 2023 All of them! The front and back lowers. The side back one (closest to the bottom of the cylinder fins) is already snapped of. They are stuck!! All i gotta remember is be PATIENT!! 2 Share this post Link to post Share on other sites
peter lena 8,620 #19 Posted February 4, 2023 @AHS https://www.acmetools.com/penetrating-oil-drip-original-8oz-kl081/857236004087.html? kroil , penetrant gets past just about any rust issue , would also use a spring impact removal tool . been there done that , replace screw heads with hex heads , pete 1 Share this post Link to post Share on other sites
