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Best Pentrent for rusted bolts |
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smills61074
AMC Nut Joined: Feb/05/2011 Location: savanna, il Status: Offline Points: 270 |
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Posted: Sep/25/2013 at 8:10pm |
I was google searching for the best penetrant. I had something that was really stuck. The number one thing that came up was this information below. Read on, but don't believe everything you read on internet. I sprayed tans/acetone on a rusty shaft for 2 weeks. I also beat on it side to side and on top daily. Wasn't moving, so I tried Kroil Oil. Had it moving in short order. It was a cast piece that I did not want to heat. If you google search for the best penetrate, read down the list farther, Trans/Acetone is a failure. It might work as a lubricant, but it doesn't eat rust. Just thought I would pass some information on. By the way, Kroil Oil has a weird sweet smell. Almost like Vicks Vapor Rub. I thought PB blaster was king.
Article in the April/May 2007 issue of Machinist's Workshop. Nut were in a salt spray and corroded. Enough samples to try out the various penetrating oils on. The nuts/bolts were tested by soaking them in the penetrating oils for 8 hours. The load needed to break the nuts free was tested using a Baldwin compressometer. The results (lower is better): > 50/50 mix of PSF & acetone - 53 Lbs > Kroil - 106 Lbs > Liquid Wrench - 127 Lbs > PB Blaster - 214 Lbs > WD-40 - 238 Lbs > None - 516 Lbs The JeepForum's beloved PB Blaster did only slightly better than WD-40! The original article, as printed in the magazine, stated the test was run with ATF and acetone. The test was actually run with Power Steering Fluid. |
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68 Blue AMX Perfect California Body going for 401/6 speed
1 1/4 ton Power Wagon Ex Colorado Brush Truck 2006 Caddy CTS V with LS2 and manual trans Corsa Exhaust Beater car (daily driver) |
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74Bubblefender
AMC Addicted Charter Member Joined: Jun/29/2007 Location: The AMC form Status: Offline Points: 2589 |
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Hey man where you been! :) That's been around since 1999
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We are just about to forge new AMC V8 crankshafts.. please check here
http://www.bulltear.com/forums/showthread.php?19564 |
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smills61074
AMC Nut Joined: Feb/05/2011 Location: savanna, il Status: Offline Points: 270 |
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I guess living in a cave. I tried it on a couple of different things. After 2 weeks of putting it on each day,and beating the heck out of a shaft, I was past frustrated. That's when I went back to the internet to research further. If this is Mythbusters, this myth is busted in my book.
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68 Blue AMX Perfect California Body going for 401/6 speed
1 1/4 ton Power Wagon Ex Colorado Brush Truck 2006 Caddy CTS V with LS2 and manual trans Corsa Exhaust Beater car (daily driver) |
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typhooner
AMC Addicted Joined: Jun/28/2011 Location: Minnesota Status: Offline Points: 1185 |
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I have been busting rust for at least30 years, and have tried most everything under the sun. I have 2 favorites..........Kano Kroil.....works well, but expensive for how much you get. Doesn't always apply easy........and Gibbs Oil.......you get quite a bit in the can, and it sprays an aerosol squirt that makes it hit the target well in tight quarters. Both work nearly equally well, with Kroil having a slightly higher success rate. However, i find myself always going to the Gibbs Oil. It just works great, and is easy to use. If you apply either, it helps to be patient and let it sit for a day if possible, and it's probably necessary for extremely stubborn fasteners. But you can get good results after 5 minutes or so on fasteners not too badly rusted. For reassembly use Maxima Chain Wax from motorcycle/powersports shops. It applies just like WD-40 but gels up to a cosmoline like protective wax/grease. It dries to a slightly tacky dry finish,and you'll never have trouble with disassembly again, after using it. It does not attract dirt. You'll find a 100 uses for it.
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1969 Hurst SC/Rambler A Scheme
1969 Rebel Raider Electric Green 1962 IH/AMC SC/out |
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74Bubblefender
AMC Addicted Charter Member Joined: Jun/29/2007 Location: The AMC form Status: Offline Points: 2589 |
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You should try some dot 5 and xylene
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We are just about to forge new AMC V8 crankshafts.. please check here
http://www.bulltear.com/forums/showthread.php?19564 |
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KLW
AMC Nut Joined: Sep/02/2012 Location: MN Status: Offline Points: 488 |
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I too must be dwelling in a cave as I have never heard of Kroll or an acetone mixture. Whenever I have something that rusted up, I have been using Sea Foam Deep Creep when heat is not an option.
Some of the toughest rusty nuts and bolts can be found on the connection to the exhaust manifold. I have never found anything that would break those loose except for heat. Just for the heck of it, I tried Deep Creep on a really rusted set and they spun right off. So, if Kroll can outdo that, I would definitely gets some. I don't believe I have seen it in any parts stores; where do you guys get it? |
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1981 Spirit
(420 cu in stroker - 570 hp) 1966 Ford Fairlane Convertible (331 Cu In - 450 HP) |
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stormy69
AMC Apprentice Joined: Dec/29/2008 Location: Mtn Home AFB Status: Offline Points: 33 |
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heat via oxy-acetylene is the best, as stated by KLW.
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KLW
AMC Nut Joined: Sep/02/2012 Location: MN Status: Offline Points: 488 |
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If you don't have an oxy-acetylene set up, MAP gas in one of those bern-z-matic torches works darn good for what it is. It'll loose a froze on brake disc and also do exhaust bolts most of the time.
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1981 Spirit
(420 cu in stroker - 570 hp) 1966 Ford Fairlane Convertible (331 Cu In - 450 HP) |
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6PakBee
Supporter of TheAMCForum Charter Member Joined: Jul/01/2007 Location: North Dakota Status: Offline Points: 5458 |
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My local NAPA store carries aerosol Kroil. Best commercial stuff I've ever used.
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Roger Gazur
1969 'B' Scheme SC/Rambler 1970 RWB 4-spd Machine 1970 Sonic Silver auto AMX All project cars. Forum Cockroach |
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wantajav
AMC Addicted Joined: Sep/04/2009 Location: PA Status: Offline Points: 1151 |
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X2 for Kroil
I worked at a chemical plant in Louisiana, you oughta see some of the rusted bolts in a corrosive, hot and humid environment. We used Kroil, if that didn't work Kroil + cheater bar! Torch heat where we could but open flame = no no in a chem plant lots of times.
Other thing is maybe not every rusted situation responds exactly the same way, some loosen better than others when exposed to penetrant + vibration versus pure penetrant and brute force.
Mike
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