1 piece vs 2 piece heads for Mercury Engines
 

Can I replace a 1 piece head with a two piece head on similar engines. The heads (2 piece) on my older engine are in better shape than the heads that are on the current engine (1 piece). One shop where I buy parts says it is OK and the other shop says don't do it. (Both shops of course have an interest in selling more parts).

Thanks


Both engine serial #s consume parts from the same mercury family of parts.
From:
http://www.mercruiserparts.com/Show_...+Cylinder+Head


Ref-------Part Num--------Description------------------------Superceded From
3-----------96283-----COVER, CYLINDER - (2 PIECE DESIGN)-----96283T
5----------18419F1------CYLINDER HEAD (1 PIECE DESIGN)--------184191





Carl

sounds like your block is a 2.4 liter and those heads were known to cause over heating. If i remember correctly from when I was building my engine for my hydro stream going to a 1 piece head was a common upgrade for the engines. I might be completely wrong because I am going off of memory.

I found an old thread at scream and fly.

http://www.screamandfly.com/archive/.../t-222987.html

Looks like you are good to go, don't go with the 2.0 liter heads stay with the 2.5's because of the compression.