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 Curtis B. Your Own Question
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28109
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
Type Your Small Engine Question Here...
Curtis B. is online now
A new question is answered every 9 seconds

Briggs has several engines 28B707, 28M707, 286707, and 287707. JA:

Customer Question

Briggs has several engines 28B707, 28M707, 286707, and 287707.
JA: I'll do all I can to help. Tell me a bit more about what's going on so we can help you best.
Customer: They use the exact same piston, but each engine has different hp. Bore and stroke are identical. How is the hp different for each one?
JA: Is there anything else important you think the Small Engine Technician should know?
Customer: I am about to get all four different engines running. just curious how they have different hp ratings when the piston is the same part number on all of them.
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Small Engine Technician about your situation and then connect you two.
Submitted: 1 year ago.
Category: Small Engine
Expert:  Curtis B. replied 1 year ago.
The ratings are based on the maximum rpm that the OEM wants the engine to run! The higher the rpm, the higher the horsepower rating!
Expert:  Curtis B. replied 1 year ago.
Did you get the answer? Please rate to close.