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Author Topic:   Corrosion Resistance - Helpful Hints
Clark Roberts posted 08-23-2000 04:22 PM ET (US)   Profile for Clark Roberts   Send Email to Clark Roberts  
Since we all need all the help we can get, thought a new thread would be helpful. I live in Florida which means severe corrosion and sun bleaching problems for us boaters. Larry just mentioned (on the 50hp 4 stroke thread) that waxing is good for the paint, I would like to mention a product that is used extensive here for under cowling and trim/tilt bracketry etc... it comes in a spray can and is called LPS 3. (1-800-241-8334). It is a soft, waxy lubricatant that really sticks and prevents corrosion! This stuff really WORKS !!! I spray my engines under the cowling also.. Try it, you'll love it! If you can't locate, call above number.. Anymore tips out there? Happy Whalin'.. Clark.. Spurce Creek Navy
PS> works good on trailer parts like the winch, coupler...etc...
reeltime2 posted 08-23-2000 04:33 PM ET (US)     Profile for reeltime2  Send Email to reeltime2     
Clark,
never heard of it before ive been looking for a product just like this. Is the manufacturer lps or is that a part# ? Is it a marine product I can find in the marine stores?
Rick
Clark Roberts posted 08-23-2000 04:50 PM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Rick, LPS 3 is not a marine product and is made by LPS Labratories, Inc (a Morgan Company) in Tucker, Ga. Sez on the can that it's safe for fabric, rubber, paint, etc and advertised as a "rust inhibitor". LPS 1 & 2 are availabe also 1 being the thinest (like WD-40) and 2 is in-between.. The 3 sticks and stays on metal surfaces... doesn't wash off readily... what you need for those trim/tilt, bracketry areas... I don't spray it on the painted cowling, mid-section or foot of my motors... I wash and wax those surfaces... LPS3 is a mil-spec product and meets mil-C-161780 Grade 2 (whatever the hell that is) and is military part #00316.. No, I don't work for LPS.. heh, heh... Happy Whalin'... Clark
dgp posted 08-23-2000 04:50 PM ET (US)     Profile for dgp  Send Email to dgp     
Read your outboard's Operation & Maintenance manual and Installation manual! It's a wealth of information on keeping your engine at peak performance and protecting your investment. If you've lost yours or didn't get one, order one from your dealer.
Use anti-sieze compound on spark plug threads. Use sparingly!
Use dielectric grease on electrical plug connectors. Keeps out moisture and doesn't conduct electricity.
Don
bigz posted 08-24-2000 06:19 AM ET (US)     Profile for bigz    
Reeltime2

LSP3 can usually be found in most Auto Supply stores --- also I have found it at Industrial Supply Houses --- as Clark says great stuff --- (might even find it at Wal-Mart these days for all I know in the auto section)

Another is Boeshield T-9 which is a corrosion shield and waterproof lubricant developed by Boeing for the aerospace industry is a great product for this purpose. They also make a Rust Free product which will clean up your rusty metal parts pretty nicely -- I have used these two for about 7 years on all kinds of equipment ---
I have come to like T-9 better than LSP3 it appears to last longer. I use it on exposed tractor parts, cast iron machine tables in our wood shop, trailer springs and shackles etc. etc. --- neither one is inexpensive but a little goes a long way ---- just an alternative either is an excellent choice ---

Tom

Clark Roberts posted 08-24-2000 06:20 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
BigZ just mentioned a good point on the "Montauk w/50hp 4stroke" thread. Keep engine tipped up and don't let it sit with foot in water... avoid that electrolysis!
Bill D posted 08-24-2000 09:22 AM ET (US)     Profile for Bill D  Send Email to Bill D     
Good thread Clark !!!
Another problem area is the stainless steel snaps on your cooler cushion or seat cushion. Take plain old petroleum jelly and fill inside the snap, will protect them for most of a boating season, no stain.
Also, a lot of trim tabs do not come with zinc anodes, adding them to each tab will help with that electrolysis problem.
triblet posted 08-24-2000 09:33 AM ET (US)     Profile for triblet  Send Email to triblet     
dgp: do you have a specific dielectric
grease to recommend?

Chuck Tribolet

dgp posted 08-24-2000 09:58 AM ET (US)     Profile for dgp  Send Email to dgp     
Chuck...one brand that comes to mind is Dow Corning and the outboard mfrs offer it also, so you can probably get it from your dealer. It's also available from aircraft supply houses. Don
Backlash posted 08-24-2000 10:11 AM ET (US)     Profile for Backlash  Send Email to Backlash     
Another great product is Corrosion Block. I saw this product demonstrated at the Cleveland boat show several years ago. A large fish tank was half filled with the stuff and a TV was turned on and half submerged in the tank! There is nothing like it for dissolving existing corrosion. The corrosion literally drips off when sprayed with Corrosion Block. As demonstrated with the TV, it is safe to use on all electrical parts, circuit boards, etc. Parts can also be treated with it to prevent corrosion and it offers good protection, but I normally use Boeshield T-9 as I feel it's waxy film seems to last longer. As with the Boeshield T-9, these products are a bit pricey, but IMO well worth the price.
Backlash posted 08-24-2000 10:13 AM ET (US)     Profile for Backlash  Send Email to Backlash     
Another great product is Corrosion Block. I saw this product demonstrated at the Cleveland boat show several years ago. A large fish tank was half filled with the stuff and a TV was turned on and half submerged in the tank! There is nothing like it for dissolving existing corrosion. The corrosion literally drips off when sprayed with Corrosion Block. As demonstrated with the TV, it is safe to use on all electrical parts, circuit boards, etc. Parts can also be treated with it to prevent corrosion and it offers good protection, but I normally use Boeshield T-9 as I feel it's waxy film seems to last longer. As with the Boeshield T-9, these products are a bit pricey, but IMO well worth the price.
triblet posted 08-24-2000 04:56 PM ET (US)     Profile for triblet  Send Email to triblet     
Do you know the Dow Corning part number?
My dealer is an hour and a half in a
direction I never go.
dgp posted 08-24-2000 05:43 PM ET (US)     Profile for dgp  Send Email to dgp     
Chuck..it's DC4, "electrical insulating compound", you can also get it from www.chiefaircraft.com, but I think you'll pay aircraft-part-liability-pricing there. Don
David Reid posted 08-24-2000 05:55 PM ET (US)     Profile for David Reid  Send Email to David Reid     
BigZ, will that T-9 product hold up under marine conditions? I'm interested in protecting the replacement springs on my trailer and they're in and out of salt water a couple times every weekend. Thanks for the info.
whalernut posted 08-24-2000 08:08 PM ET (US)     Profile for whalernut  Send Email to whalernut     
Hey guys, it seems most of the outboard corrosion problems come from saltwater. The only problem I have when leaving my boat in my slip in Lake Erie is slime, not corrosion. That is all anyone that I know has problens with on their outdrives, not corrosion. I just keep my outboard tilted up now and have no more problems. Any comments. Regards-Jack Graner.
Backlash posted 08-24-2000 08:43 PM ET (US)     Profile for Backlash  Send Email to Backlash     
If I'm not mistaken, Boeing developed Boeshield T-9 to protect aircraft parts during long-term storage. Yes, it does hold up in the marine environment.
Steve
bigz posted 08-25-2000 06:13 AM ET (US)     Profile for bigz    
Don, yes it will work and last on your trailer springs --- after a a number of dunks would repeat application --
As I am sure you do anyway, rinse off the trailer with fresh water after an outing that won't have any effect on the T-9.

Another excellent product for the entire boat is SaltAway --- get the applicator spray kit and rinse the entire rig down once every couple of weeks --- great to flush out your engine -- West has it as do most marine stores --- Regards Tom

triblet posted 08-25-2000 10:36 PM ET (US)     Profile for triblet  Send Email to triblet     
Dow Corning #4 is available from
http://www.mcmaster.com/ Their part number
is 1204K12 $9.96 per tube.

This is a great website. They specialize
in supplying the maintenance department
of large companies. Admiral Linda is a
Silcon Valley buyer, and she put me on to
them. Don't worry, if you've got a Master
Card or Visa, they'll sell to you. Ignore
all the stuff about PO numbers and press on.

They have lots of strange stuff. Need 3/4"
fine thread stainless threaded rod? A buddy
of mine did for his 60' commercial dive
boat. They had it.

A similar outfit is http://www.grainger.com
They also had the Dow #4, $8.72, p/n 6Y765

McMaster also had Boeshield T9, a quick
search on Grainger didn't find it.

If you do your own work, these two websites
should be in your bookmarks file.

Chuck Tribolet

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