The Ford Barn - View Single Post

Tim Ayers · 03-05-2024, 06:17 PM

Merc motor bored .100 over gives a displacement of about 290CI ?

Don't think this is correct. .125 over X 4" stroke (Merc crank) is a 276 c.i. motor.

If the heads are off the motor, I'd CC them. That may help give you an indication how much has been taken off of them in the past.

03-05-2024, 06:17 PM	#3
Tim Ayers Senior Member Join Date: May 2010 Location: NJ Posts: 6,198	Re: Complicated Compression Ratio Merc motor bored .100 over gives a displacement of about 290CI ? Don't think this is correct. .125 over X 4" stroke (Merc crank) is a 276 c.i. motor. If the heads are off the motor, I'd CC them. That may help give you an indication how much has been taken off of them in the past.