What gasket sealer when joining the engine halfs

[kingkitesurf]

What would be the best gasket sealer when joining the two type 4 engine halfs?

[Jack_O_Trades]

Everyone probably has their preference.

Yamabond was recommended to me and this is what I used for my engine build without issue.

[aeromech]

Yes, Yamabond
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

[Starbucket]

Loctite 574 for proper crush.

[3gengines]

I agree with the Loctite 574. I am a master Ferrari tech (25 years) and that is all I use on metal to metal sealing. Ferrari has a lot of non gasket surfaces, engine and trans axles. They use 3 bond at the factory but 574 is superior. I used it on my VW trans axle and it is drip free. I will use it on my Bus 2.0 case (in a Buggy) when I rebuild it next winter.

[cdennisg]

Always used Permatex 83H aviation gasket sealer for many years. Then I switched to Curil K2. That is what I use now, and will use if I ever build another engine from the bottom up.

_________________
nothing

[tommu]

I use kuril. You have options. It’s probably more important here to know what not to use!
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[SGKent]

just throwing 2 cents in since I could not find the lengthy sealer thread.

In the past I used Curil K2 and it leaked a little after awhile. I used Loctite 574 and it leaked a little. This time I used Threebond 1184. It seems like a really solid sealer. That said, while it is highly recommended, it is good to 302F then it starts to slowly lose strength. That is about the max one should ever let the oil get to on its worst day or the fried foods you are cooking will taste funny Curil is good to 482F or thereabouts.
_________________
“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin

[Wildthings]

[aeromech]

I didn’t know that but I’d guess that there are probably 20 different sealers available to do this job.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

[Pottsalot]

I’ve been using this little bottle called Indian Head from Permatex for years. Since the mid 90s with no problems. Also use a little of this compound on cylinder to case and valve cover gaskets. Tough stuff

[aeromech]

I’m looking that up

Here

Permatex 20539 Indian Head Gasket Shellac Compound, 2 oz. https://a.co/d/aDNs0MT
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

[cdennisg]

[aeromech]

I have no idea
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

[W1K1]

I've used loctite 518 for a couple decades on cases, and flanges
_________________
http://www.thesamba.com/vw/archives/manuals/jim_martin_engine_build.php

1973 super
1965 squareback 1500E
1971 bay window westy- subi swap

[SGKent]

[Amskeptic]

I have been using Permatex Aviation FormaGasket since 1979. Have not had leaks.
Colin
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www.itinerant-air-cooled.com

[SGKent]

In answer to cdennisg who asked specifically about Indian Head Gasket Shellac compound. It is good -65F to 350F. It is considered a light gasket sealer.

Suggested uses: Hose connections, paper and cardboard gaskets.

https://itwgbpermatex.wpenginepowered.com/wp-content/uploads/tds/20539.pdf
_________________
“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin

[outcaststudios]

ive used indian head gasket for cardboard or paper gaskets with no issues. but i prefer either loctite ,or permatec form a gasket, for high temp applications ,other gasket materials ,or for metal to metal situations.
_________________
'88Doka JX td
'69 westy
(rip)couple bugs
(rip)three type III"s
(rip) '81 vanagon
a bunch of french stuff,and 9 motorcycles.

https://www.thesamba.com/vw/classifieds/detail.php?id=2573791

[timvw7476]

Gascacinch. The stuff with the Pixie on the can. Yellow in color. No icky disgusting mess requiring acetone or MEK to remove.
I also use it at cylinder base shims.