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Loud Yamaha

mibowman

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Just Wondering! My 1989 Pro V

Just Wondering! My 1989 Pro V is very loud. Is there a way to add insulation to the cowling to quiet it down?
 
J.C.Whitney catalog used to se

J.C.Whitney catalog used to sell rolls of a fire proof metallic film/foam insulation for engine covers and shrouds that you could cut and glue to the inside of your motor cover...might save you a few decibels. Good Luck!
 
Would insulating the cowling h

Would insulating the cowling have an effect on the operation of the engine? would this cause an overheating issue?

Thanks for all the insight. You folks on this forum are great!
 
"my 90C Yamaha cowling already

"my 90C Yamaha cowling already has about about 1/4" foam insulation, doubt adding some more could cause overheating since motor is water cooled. they use a lot of that foam/film insulation on the engine covers for the ski boats with the big V8 engines. I've thought about adding some to my motor but the motor really isn't that loud except at higher RPM's, which I don't use that much. Good Luck!"
 
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