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Another option maybe...?
A couple local builders like Permatex high tack especially for mag cases. Claim it stays more flexible than hardened 574, but was very messy. What kind of window of time does it provide before starting to harden, and just one or both case halves?
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It seems that much has changed from the 911 engine rebuilding book that was done by wayne at Walt's place (Competition Engineering) in Lake Isabella.
In that book it recommends loctite 574 for most but Henry Schmitts shows different solvents (which I purchased and have) and I'm trying to see what to do in the morning.... I have 574 and then I have the others options for all surfaces.. some which include 574 and others. Does anyone have the most updated list or has it not changed? Thank you, Bryan |
I'd suggest you start with this post, and scan forward through this thread.
FWIW, I have about 5 years on my motor now with these sealants, and the only leaks have been from the chain tensioner lines that I reused. Quote:
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I have not seen it mentioned in the thread.
What, if anything, do we put on the metal gaskets with rubber bonded to the them, chain housings to case on 964 and 993 engines? Thanks. |
#8 O ring
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I don’t want to misquote him here so I won’t elaborate. Perhaps he’ll chime in. |
Anyone else having doubts about 1104?
I'm thinking about switching back to using 574 for case halves and cam towers to heads. The 1104 just seems to go off so quickly. I applied it to both case halves, but by the time I got to putting them together, (maybe 5 minutes) they were 'dry to touch'.. When clamped together, there was only a little squeeze out at certain areas, likely from where it was a little thicker. The sealant that did squeeze out, was soft and pliable for some time.. which leads me to think that my join 'should' be ok and leak free. But I will only find out after it's together and running.. Or should I just tear down the short block, clean it up, and use 574? 574 seems so user friendly in comparison... |
1104 on the case halves (or its current iteration), your choice on the cam towers. We have had good success with both 1104 and 574 there. But never ever had a case leak with 1104 on the case.
To the previous poster that thinks Wayne's recommendations are gospel... Build a few engines, find what works for you. You MAY find some things in that book that you would never do.... As an example, we, like many pros in the industry, would never put RTV on a case bolt washer. Its a great book, we reference it often, but build a few motors and learn what it is right and what is..... Read the thread. There is so many great recommendations. Pick your sealants, and go with it. There is not one solution, but pros (who have actually built many motors) have taken the time to give you their experiences. |
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Is ThreeBond 1104 aka 1184?
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I was Rothsport’s engine and trans guy for 5 years, with another 40+ on each side. I’ll keep it simple, case 1/2’s and cam housings to heads: 574. Gaskets dry and Orings DC111. G
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I love 574, I think it's great stuff. That said, I really like 515 as well, it's the same consistency as 574 only it's purple, smells like grape jelly for some reason (not kidding) and has a higher tensile strength, and is more readily available not to mention cheaper. |
Having looked through the entire 34 pages of this thread, I am still a little unsure of what sealant, if any, is used on the "Crankshaft seal -front/pulley end", part no. 999 113 290 41 in the PET. Did I overlook it, or was it referred to by a different name? Some guidance, please.http://forums.pelicanparts.com/uploa...1605311341.jpg
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As stated above - dry. They have called it a balancer seal. In saying that, I’ve been a mechanic for 30 years and I always use a very thin smear of Toyota Seal Packing on both the rear main and front seals. It is a fantastic product. Probably like the Threebond/Yamabond but black.
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Much appreciated OSC911!
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Can anyone comment on the Yamabond or Hondabond equivalent to Threebond 1104/1184/1194?
Threebond is difficult to find here in Canada. Both Yamabond and Hondabond are readily available and used to seal case halves for motorcycle engine rebuilds. |
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That's nearly 200 911 air-cooled engines with stellar success. Have others been successful with varying technique? Of course. We just offer our experience so first timers can have the best shot at success. Pelican Parts offers the Supertec Case Sealant Kit with everything you need in one place. http://forums.pelicanparts.com/uploa...1605471739.jpg |
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