refitting gsx11oo ef crank cases

[suzuki11e]

What if any thing do you use when refitting the two halves of the crank cases together, there doesnt seem to be a gasket used.
Thanks all

[Dezza]

Three-bond is good. Don't use too much as the excess may break off and block something important like an oil way. Bike cases don't have a gasket as it would be almost impossible to get a correct bearing clearances on tightening. Careful preparation of the mating surfaces is needed. Clean off all the old cack with thinners. A manual will be needed for the correct tightening sequence of the case screws. What engine is it? I have never split a GSX motor (several others though) but others here have and will be able to give specific tips if that is what you are working on.

[quazi]

Seem to remember I used some wellseal when I did mine some 5 years ago.

Swear by the stuff, but only on specific matting surfaces.

[suzuki11e]

Thanks for that,
The motor is a gsx1100 ef   1135cc

[katana]

A real oldskool seal method uses no sealant whatsoever - just grease and some silk thread!
Just smear some grease around the faces to be sealed then lay the thread in the grease 'glue' all around
the castings with an inch overlap where they meet. Any grease that squeezes out is of no consequence, just
don't move the case around once dropped onto the thread as it may get displaced on thin webs and then leak!

[captain chaos]

even more oldskool is just assemble the thing dry and live with all the oil leaks.

And many old people will start talking to you about "when I was a lad my Triumph Bonneville bla bla bla...."

[megawatt]

Used to use Kawasaki bond, can't find it now, so bought some Yamabond(same as 3 bond).

[Dezza]

Blue hylomar worked well too but this three-bond stuff now seems all the rage. It's a bit like old fashioned 'instant gasket'

[arnout]

Apart from deciding on what type of silicone goop to use, it is useful to check the flatness of the mating surfaces as this has an influence on the quality of the seal..
Use a straight edge to check for high points.. Usually the area around the cyl. studs will have raised itself over time slightly, which would result in a wider gap between the cases elsewhere..

[screwriverracing]

I've always used a thin smear of yambond, never had any problems.
Cheers SRR

[kokolis]

Grease, thread,oldskool stuf and pray not to leak...........


You can also use a very thin layer of gasket silicon and be sure it wont.

If you dont damage the surfaces of the cases them have no reason to leak, higher temperature changes near the cylinder block get compensate through the cases structure.

[atshed]

lightly brushed on blue hylomar or locktite premium grey silicone , usually use a small artist brush to reduce any risk of excess blobs . takes a little extra time but never had any leaks or blockages to date. as arnout points out - checking surfaces is a must.

[slim]

I have removed too many knackerd heads to even think about getting hylomar or instant gasket anywhere near an engine

3 bond or yamabond is all I use as it does not set & dissipates in the oil so wont block any oilways etc

Katana is showing his age by the way ive not heard of that method for 30 odd years