Case Halves

[Hogggman]

Okay I am probably going to start an opinion based argument but wanted to see the majority of the opinions. I know they all have 6m6 bottoms and they are all machined and matched from the factory but can you mix the bottoms any way? Let the arguing begin.LOL

 

[Kny21]

I've always heard no, and that answer right there is enough for me.

 

[robertg]

You can with a Yamaha.

 

[ski4]

i believe brian onthe other site said sbt does this and does not worry about it affecting the no question warranty

not sure if that is a good or bad thing just something i remember reading

 

[Matt_E]

That's what SBT does, whatever the hell that is worth.

 

[Mile9c1]

It probably isn't the best idea but I took apart an engine last year that ran great and had mixed halves (I didn't know it till I tore it down).

SBT doesn't match any of their Yamaha cases.

 

[jetskier79]

If your cases are matched, don't mix them. If you have a top and bottom, and it's all you got, I say slap them together.

 

[Freestyleriverrat]

From what I have heard, for a basic rebuild on a stock motor mismatching cases is ok. But it should never be done for a performance motor. Cases are machined togather from the factory and should be remain togather b/c of that. If you do mismatch cases for a performance motor make sure to have the tolerences inspected and machined if necessary to enure a proper and close fit.