Case Gasket

[88blasterman]

I am currently rebuilding a blaster motor. when pulled the cases apart there was a gasket between the 2 sides of the cases. I hear that Yamaha don't use a case gasket, instead they use a sealant. Now I have bought a complete gasket kit and it includes a case gasket. Should I run a gasket or use the Yamabond.

 

[Awk08]

the case halves use no gasket, nor is one available.
prolly a clutch cover gasket your seeing in the gasket set ?

Use Yamabond or Tribond sealer painted on lightly with a flux brush. lapping the case sealing surfaces is a good idea too.

 

[blastngo92]

It may have just been some liquid gasket if it was between the cases from the previous owner?

 

[88blasterman]

there was a gasket between the cases when I pulled them a part and there is a replacement in the gasket kit. I know for a fact

 

[Awk08]

there was a gasket between the cases when I pulled them a part and there is a replacement in the gasket kit. I know for a fact

lets see some pics of this new case gasket
matched up to a case halve ?

no gasket even listed .....
http://www.bikebandit.com/houseofmo...ster-200-yfs200m-crankcase/o/m145954sch102861

 

[kevinsranger]

IF it is a case gasket, dont run it, the added thickness of the gasket would cause problems with crank to crank bearing clearance and trans bearing clearance not being tight enough between the two halfs