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Old 10 October 2008, 06:34   #1
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Best anti sieze compound for outboard nuts n bolts ?

What is the best, or recommended, for replacing SS bolts etc into aluminium. both for longevity and ease of release at a later time.
I presume copperslip et al is a no-no due to galvanic interaction.

So, what is the way to keep the threads like new allowing for normal release and offering total protection ?
ta.
Rudds
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Old 10 October 2008, 07:09   #2
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SS into aluminium is a no no in itself. Are you sure it's into aluminium? Normally ali is to weak to have a thread so they use hardened steel inserts.
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Old 10 October 2008, 08:07   #3
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Hi sir
No, I have seen lots of outboards where the ss bolt goes into a precut ali thread, no helicoil etc.
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Old 10 October 2008, 08:23   #4
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Hello
I use loctite silver grade!
The jap engines some times have a combination of steel an ss bolts.

Cumps
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Old 10 October 2008, 10:25   #5
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i use a tad of normal waterproof grease when reasembleing things but only a tad as too much down a blank hole can cause a hydrolic lock if scewing things up giving a false sense that its tight ,and i have used p.t.f.e .tape on things that dont get too hot .in general most people OVER tighten nuts and bolts anyhow .
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Old 10 October 2008, 15:46   #6
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Quote:
Originally Posted by ruddles View Post
So, what is the way to keep the threads like new allowing for normal release and offering total protection ?
Rudds
Been using for years Lubrimatic wheel bearing grease, is extreme salt water resistant and corrosion protectant on all engine and bolts threads, will still find the product on threads after years of use, incredible for shafts, impeller housing, thermostats, cylinder head bolts. Just clean all threads with acrilic thinner or appropriate cleaning solution, dry well, apply grease and torque to specified settings. Don't know what is it made from, as it's a secret trade USA formula.

Happy Boating
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Old 10 October 2008, 16:01   #7
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Quote:
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Normally ali is to weak to have a thread so they use hardened steel inserts.
Cobblers
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Old 10 October 2008, 16:03   #8
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Quote:
Originally Posted by ruddles View Post
What is the best, or recommended, for replacing SS bolts etc into aluminium. both for longevity and ease of release at a later time.
I presume copperslip et al is a no-no due to galvanic interaction.

So, what is the way to keep the threads like new allowing for normal release and offering total protection ?
ta.
Rudds

Mercury/Mercruiser/Quicksilver ''Perfect Seal'' or other manufacturers equivalent is the industry standard, it also gets sold as aircraft sealent.
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Old 10 October 2008, 22:07   #9
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Great responses !
Thanks again all. Excellent.
In the past I have used duralac, but it is more of a protector for fixed mounting between dissimilar metals (I use it on mast fittings etc on the ´´yott´´) problem with duralac is it also acts as a form of loctite, whilst great for some uses is not so great for others.
Love the wheel bearing grease tip Locozodiac, good stuff.
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Old 10 October 2008, 22:26   #10
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I use Corrosion Block grease. Seems to work rather well.
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