Screwed the pooch

[Havoc1231]

Thanks guys. I was able to successfully split the cases and am now ready to clean, weld and powder coat them (eventually). I did miss two bolts, which I could have sword I had removed. I found them after I tried the nut and bolt trick to splitting the halves, so of course, I lost one of those tabs. Yet another little weld job to have done.

Chuck, any reason I should use that particular liquid gasket over other brands? I had just picked up a tube of stuff (not sure what brand) from pep boys earlier this week. Just curious.

[bwringer]

You won't find a case sealer that will work at Pep Boys or any auto parts store.

You need a very specific type of sealer for motorcycle engine cases. Many dirtbike-oriented moto shops will carry a Yamabond brand sealer.

It's also sold under the ThreeBond name. Here's one excellent source:

http://www.z1enterprises.com/ItemDetails.aspx?itemDescription=ThreeBond+Liquid+Gasket+1184&item=TU53-0395

[chuck hahn]

Many bike companies and many mechanics that work in professional shops and dealerships swear by it..and if the bike companies mention it in their manuals ( My Yamaha manual specifically does ) then thats why i suggested it.

Many here also have used, and had no difficulty with other stuff and suggest a place called HOLYMAR...I think Bill ( Chef) , Ray, Ed, and many others here have mentioned Holymar..but youll have to PM them for specific names of the sealers they have used.

[mike_of_bbg]

You won't find a case sealer that will work at Pep Boys or any auto parts store.

You need a very specific type of sealer for motorcycle engine cases. Many dirtbike-oriented moto shops will carry a Yamabond brand sealer.

It's also sold under the ThreeBond name. Here's one excellent source:
http://www.z1enterprises.com/ItemDet...item=TU53-0395

That's the stuff. The reason everyone is so specific is because this is known not to harden. If your sealant hardens pieces can break off and clog your oil passages. Well tested and proven: and it's not even expensive. One tube would do 3 cases.

If you need to get something locally for speed as mentioned visit your local Yamaha, Suzuki or Honda dealer and get their name-brand bond (YamaBond, SuzukiBond, HondaBond, whatever). It's the same stuff.

[Buffalo Bill]

Just a thought…

Would some torch heat applied to the case edges help?
Maybe soften the seal compound.

[chuck hahn]

Yes heat does help a bit.

[selzer85]

Do not use permatex motoseal I learned the hard way that no matter how sparingly you use it it will disintegrate and clog every oiling passage in your motor.

[Havoc1231]

Once again, thanks for the help. I just dropped the lower case at the welders this morning to repair the crack, reattach the broken tab and help remove the oil filter stud so I can remove that last pesky bolt. Other than that, both halves are soda blasted and I should have them out for powder coat next week.