Threebond sealant
- Thread starter Ben34
- Start date
Quinc
Buy a Superjet
- Location
- California
Differences Between Yamabond Compounds
I’ve always used Hondabond in the past, but because I’m building a Yamaha engine I decided to grab a tube of Yamabond. I’m sure it’s probably about the same stuff and it’s not expensive. I did notice though that Yamaha has a few different Yamabond 4 mixtures. I grabbed the Motorsport and Marine...
www.x-h2o.com
After reading I will definitely use 1184. 1211 seems to be a (rtv) and not really rated for gasoline. Even shows on their data sheet. Only thing is 1184 has a temp rating up to 302f. But if my motor gets that hot something is wrong.
- Location
- Buffalo, NY
1184 is definitely the way to go. I use it on all my engines and it never did me wrong.
You think it would be ok on exhaust manifold gasket? It’s only rated for 302f
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
I use the regular Hondabond, somewhere along the line Yamaha changed the formulation on Yamabond 4, the Hondabond is the closest thing I have found to the original formula Yamabond 4, I have also used the Permatex motoseal it also works really well and is widely available, one more thing out of all the sealents mentioned Hondabond is the cheapest and Motoseal is the easiest to find , not a concern for most of you but if you use a lot of it like I do it can be.
Last edited:
DylanS
Gorilla Smasher
- Location
- Lebanon Pa
I’ve used both and had zero issues or complaints with either
Ok I think I’ll just use the 1211 since an engine builder I trust uses it. Also has a higher temp rating. Anyone run this on gaskets too?
DylanS
Gorilla Smasher
- Location
- Lebanon Pa
Have used both on intake and exhaust manifold gaskets with good results and on o rings at one point which I would suggest against.
A good intake or exhaust gasket when installed properly shouldn’t need any sealer but it is useful to help keep custom cut gaskets in place.
Yeah I’ve had issues in past before with some gaskets not sealing dry. Also on old skis where the cases probably aren’t flat. I’ll just play it safe and use 1211 on gaskets
- Location
- Buffalo, NY
I use the Copper Permatex on the exhaust manifold gaskets, not Threebond.
1211 takes a long time to dry and goes on a lot thinner than 1104, i was reading this thread and didnt realize they quit making 1104...
- Location
- California
I have had older 1211 go on normal but not dry. Test somewhere else first!
- Location
- Oregon City Oregon
Agree on testing first, opened brand new tube of yamabond that had separated. Came out clear, then gray paste. Tried mixing it in a cup but never set up on my cases. Lesson learned.
DylanS
Gorilla Smasher
- Location
- Lebanon Pa
Old 1211 and most case sealants will get a skin on them and smear like peanut butter, they’re about useless at that point
Really good mechanics smother every single mating surface in high temp rtv silicone !
Really good mechanics smother every single mating surface in high temp rtv silicone !
- Location
- Charlotte, NC
I only use the sealant on gaskets if absolutely have to. If the gasket doesn't seal without using a sealant, something is wrong with the sealing surface. Sealant is a bandaid. On gaskets, I use a thin coating of assembly goo or a similar grease on the gaskets so that if I need to take a manifold off, it won't typically tear the gasket.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Yeah but you have to use the whole tube up !
Quinc
Buy a Superjet
- Location
- California
Book says to install cases with sealant. Pretty sure it says dry for the gaskets.Oh Oh, but if you really were a Good Mechanic and knew whatcha doin' you would install them DRY...
Popcorn please
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
The book was made for stock skis, do what works for you in your situation. when I worked at the stealership on bikes , known leakers got gaskets backed up with sealer, you also used sealer to fix minor tears in gaskets such as clutch cover gaskets. no issues there, many a ski has been built sans base gasket, just sealer, the hard and fast rules go out the window on skis withaftermarket parts that don't always fit properly.