433cc JUGS

[VinYammy]

How much can you find by these letters on the Jugs. 433cc S,SB,SD,WB,SC. SPEC WISE?

 

[YAMMIEGOD3:16]

WELL THE 433 cc IS PRETTY SIMPLE SPEC WISE. YAMAHA USED LETTERS AFTER THAT TO I.D. ENGINES PER MODEL. 3:16 (yammie tony)

 

[VinYammy]

WELL THE 433 cc IS PRETTY SIMPLE SPEC WISE. YAMAHA USED LETTERS AFTER THAT TO I.D. ENGINES PER MODEL. 3:16 (yammie tony)

Hey, maybe I have a diamond in the dust!!!!! never know unless I ask..

 

[Snojet Steve]

W is a generally more reliable, lower compression, double piston ring engine. S is a fan cooled sport engine with single ring pistons, more RPM and compression. X is free air stock engine. R is racing. The widest range of lettering is in the "S" series. There are usually just minor porting and piston differences between these engines.

 

[GP396]

?

Would SF be correct for a 78 Exciter. I'd be interested if anyone new the S's by year model

Tx,

 

[ledsel]

433wb

WELL THE 433 cc IS PRETTY SIMPLE SPEC WISE. YAMAHA USED LETTERS AFTER THAT TO I.D. ENGINES PER MODEL. 3:16 (yammie tony)

What does WB mean?