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> Sealing case halves, What to use?
akellym
post Feb 16 2006, 08:22 AM
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I'm ready to put my case halves of my motor back together, what is the best sealant to use?
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Allan
post Feb 16 2006, 08:26 AM
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I don't know what others may say but I used Permatex 3H that Jake recommended in his rebuild video.

Wurked gud.
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McMark
post Feb 16 2006, 01:35 PM
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Loctite 574

Very expensive, but works great.
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Eric Taylor
post Feb 16 2006, 01:40 PM
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That 574 is all the rage with the 6 guys, aught to be good for our little 4's (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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Jake Raby
post Feb 16 2006, 02:08 PM
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The best sealant I have found for the TIV case is Curil K 2- I carry it at my store as it is a German sealant that is hard to get.

QUOTE
That 574 is all the rage with the 6 guys, aught to be good for our little 4's

Huge misconception!

Thinking that way is similar to the "Bigger is better" way of thought and it's just not true... When I have used 574 engines would begin to leak after 6-8 months of service.

I have used literally hundreds of sealants on TIV engines to create the absolutely no leak reputation we have gained, Curil K 2 is the best case sealant I have ever seen, and its not messy to use or to clean up!

My sealants handbook is at the publisher now, 45 pages dedicated to the proper sealing of the TIV engine ONLY!
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McMark
post Feb 16 2006, 02:26 PM
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QUOTE (Jake Raby @ Feb 16 2006, 12:08 PM)
My sealants handbook is at the publisher now, 45 pages dedicated to the proper sealing of the TIV engine ONLY!

(IMG:http://www.914world.com/bbs2/html/emoticons/drooley.gif)

*sets aside $*
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John
post Feb 16 2006, 02:28 PM
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QUOTE
Curil K 2 is the best case sealant I have ever seen


Is that the greenish stuff? I like that too.
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MattR
post Feb 16 2006, 02:52 PM
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QUOTE (JOHNMAN @ Feb 16 2006, 12:28 PM)
QUOTE
Curil K 2 is the best case sealant I have ever seen


Is that the greenish stuff? I like that too.

Its a dark yellow/brown color. Not as dark as 3H... tough to describe, but its not green.
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John
post Feb 16 2006, 02:57 PM
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Its a dark yellow/brown color.


Then is it the stuff that actually gets hard? That comes in a bottle with a brush attached to the lid?
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McMark
post Feb 16 2006, 03:06 PM
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The green stuff is Curil-T, same brand, different product. (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)
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Jake Raby
post Feb 16 2006, 03:11 PM
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It never dries and is a very pasty substance with a lot of wax content. The wax repels the oil, so this sealant is considered an "Oil barrier"..

It REALLY works. I just used it to seal up the case halves of a 40,000 buck TIV engine that I have been working on for almost 1.5 year!
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alpha434
post Feb 16 2006, 03:29 PM
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QUOTE (Jake Raby @ Feb 16 2006, 01:11 PM)
..... seal up the case halves of a 40,000 buck TIV engine ....

WHAT?!?! (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif)
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Britain Smith
post Feb 16 2006, 07:32 PM
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I used Dow Corning product (gotta look for the exact name) that does similar things...never dries.

-Britain
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TimT
post Feb 16 2006, 07:39 PM
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The Dow-Corning product is #730

It works very well for sealing case halves, etc. However at $70/tube its a silly product for a guy who builds an engine every few years..

That Curil is the schiznitz also...

or Yamabond

fyi:

730 Solvent Resistant— Contains fluorosilicone rubber, which resists swelling when exposed to fuel, oil, and most solvents. Nonrunning paste for repairing fuel lines and tanks, bonding components exposed to solvents, and making formed-in-place gaskets. May corrode certain metals (including copper, brass, zinc, and carbon steel).
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Britain Smith
post Feb 16 2006, 08:29 PM
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Yep, thats the stuff.

-Britain
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dwillouby
post Feb 16 2006, 10:04 PM
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Try Yamabond#4. Its sole purpose is that of a case sealer. Comes in a tube for about 7 bucks. I have used it for years on motorcycle race engines. Good stuff.

David
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alpha434
post Feb 16 2006, 10:14 PM
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What's in the yamabond.

We always use the loctite, for fours and sixes. But I think I might try some of the other stuff out there.
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Twystd1
post Feb 16 2006, 10:20 PM
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Whatever it's worth.

I used Yamabond ONCE once on a type4 ..

Never again.. It hardened after about six months and leaked in three differant places. WHAT A PAIN....

I assume that the case temps are differant than bike engines.
(truth is I don't know)

When I took the case apart. The Yamabond had lightly carboned up and wasn't pliable any more...

And I don't believe that engine was EVER overheated.
(don't know for sure)

This is just my experience. That don't mean it doesn't work..

Just not every time...

Now let's talk about the dental floss trick..
Jake you listening?????

Never again.... Curil rules.

Twystd1
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alpha434
post Feb 16 2006, 10:33 PM
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Wait! Dental floss trick?!?!? What? (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif)
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TimT
post Feb 16 2006, 10:35 PM
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QUOTE
Now let's talk about the dental floss trick.



not sure what to say about that...Its not good practice now.. and it was a band-aid then?
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