bm1961
04-21-2007, 10:41 AM
I just pulled the powerhead from what I thought was a Merc 150 and plan to install a 2.4 200 powerhead on the mid section. Which tuner would be best to use for the 2.4. The one on the left was on the supposidly 150, and the one on the right was from the 200 2.4
<a href="http://img122.imageshack.us/my.php?image=tunersxo7.jpg" target="_blank"><img src="http://img122.imageshack.us/img122/5701/tunersxo7.th.jpg" border="0"/></a>
Also, the serial number plate on the mounting plate list the motor as a 1988 150, but I could not find any serial numbers on the freeze plug located on the top of the motor to verify the powerhead. Instead of any serial numbers, it had a 200 stamped on it. I have the heads pulled on this motor and measured the bore at 3.370" and stroke at 2.63". From searching on the board, the bore tells me this is a 2.4. block.
<a href="http://img122.imageshack.us/my.php?image=tunersxo7.jpg" target="_blank"><img src="http://img122.imageshack.us/img122/5701/tunersxo7.th.jpg" border="0"/></a>
Also, the serial number plate on the mounting plate list the motor as a 1988 150, but I could not find any serial numbers on the freeze plug located on the top of the motor to verify the powerhead. Instead of any serial numbers, it had a 200 stamped on it. I have the heads pulled on this motor and measured the bore at 3.370" and stroke at 2.63". From searching on the board, the bore tells me this is a 2.4. block.