How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Dominick Your Own Question
Dominick
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
14379177
Type Your Boat Question Here...
Dominick is online now
A new question is answered every 9 seconds

Is there a difference between Yamaha out board heads 6E500

Customer Question

is there a difference between Yamaha out board heads 6E500 and 6E510 on a 115 hp
Submitted: 10 months ago.
Category: Boat
Expert:  Jason replied 10 months ago.

Hi John, my name is Jason.
I don't know where you got those numbers but they are not part numbers. If they were marked on the head then all they would be is casting numbers, and there is no real way to cross reference casting numbers to anything. That being said shaving a few thousandths of a head on a 2 stroke really isn't going to increase compression. Are you wondering why compression did not go up or did you have another question?

Related Boat Questions