What Glue To Use To Seal Casing???

[no longer collecting]

I changed a crank bearing and split the casing in half which is also the bar oil tank. What would be the best glue to seal back that case. I know it needs to be oil, fuel and heat resistant. Any suggestions on a good commercial or industrial sealer. I dont want to start over the work because of a poor quality glue. I dont know if it needs to be hard or stay flexible when cured. Your suggestions are very much appreciated.

 

[Grease monkey]

case sealant

Yamabond works awsome! You find it at you local yamaha dealer it dries semi hard and is what the ATV, Bike mechanics use I,ve even fired up as litle as half hour after build with it and at less than $10 a tube it last a long time!

 

[Lakeside53]

Don't know what saw you are assembing, but if it's a stihl, the case gasket goes on DRY... no glues, gasket makers etc...

 

[Ax-man]

Glue???? :jawdrop: That is a new one. Like Lake said always use a dry gasket. This is no place to take a short cut for an engine.

Larry

 

[BigUglySquirrel]

I use Yamabond on my quads and bikes. Great stuff. Don't know what you use on saws though.

 

[Ax-man]

Were talking saws here, not bikes, I have never split a bike case, but I'm assuming the mating surface on a bike is wider than a saw would be. On a saw there just is not that much of a mating surface so a gasket is a better choice than sealants.

Larry

 

[Patrick62]

"right stuff". Would work. Otherwise I would obtain a gasket (or cut one) and then use the high temp spray sealer. Or maybe just stick it in dry...

Is it possible that the case halves have to be a perfect distance apart to set the correct bearing preload? If so, then the factory gasket would have a known crushed thickness....

-pat

 

[Lakeside53]

"right stuff". Would work. Otherwise I would obtain a gasket (or cut one) and then use the high temp spray sealer. Or maybe just stick it in dry...

Is it possible that the case halves have to be a perfect distance apart to set the correct bearing preload? If so, then the factory gasket would have a known crushed thickness....

-pat

yes they do have to be the correct distance apart... Guys, just use the correct $2.50 gasket... and mount it DRY.

 

[bugfart]

Why no love for the Homie 775G Lakeside?

 

[Lakeside53]

Why no love for the Homie 775G Lakeside?

'cos I have an 066 and 088

Actually I think it's a wonderful example of '50's engineering, but it is heavy, and slow (but massive torque...). Great conversation piece though.

 

[no longer collecting]

glue casing

i checked and this saw is original ....never taken appart ...it is a Sears Craftsman saw....and there is glue , black in color and soft elastic and it is all around the mating surface of the 2 casings.....would need to know what type of glue for reassembly........thanks.

 

[TimberPig]

i checked and this saw is original ....never taken appart ...it is a Sears Craftsman saw....and there is glue , black in color and soft elastic and it is all around the mating surface of the 2 casings.....would need to know what type of glue for reassembly........thanks.

It's not glue, it's a sealer. RTV, hylomar, or Yamabond as was mentioned earlier are commonly used for case sealer on engines that don't run gaskets. Since your engine originally was sealed with it, it is the correct material to use. RTV dries and cures to semi-hard condition, hylomar and Yamabond stay soft and don't cure to a non-tacky condition. Threebond, Permatex and Yamaha all sell quality products for the purpose. A hardware store that sells automotive products, a motorcycle or snowmobile shop, and others will all have what you need.