Some where I read/saw that a GX-160 head will bolt right on a Predator 212 hemi, for better combustion.
How true is this. If so, are there any modifications needed?
Thanks.
The gx160 head has a 14cc combustion chamber, which will boost the CR over the stock 212 20cc-22cc head.
The only difference that I have ran into, when swapping a 14cc head to a 212, is the earlier predator 212 non hemi blocks.
The dowel pin holes are different.
It will still work fine, jus don't use the dowels. The head gasket will still be straight and lines up fine.
You should open the ports up some, as the 14cc is ported and designed to be on top of a 68mm piston and 45mm crank (160cc)
The 212 is 70mm bore and 55mm stroke, as you can see, that's a huge difference in the way the 14cc head will flow when on a 212.
It'll start and work fine without port work, but will limit rpm to around 4500, and you will see big gains in the lower and mid range, makes big smiles for fun time play toys that still have a working governor
.
Here, arc tells the difference with the 212 blocks, and you can see the smaller chamber on the 14cc compared to the 20-22cc head.
Predator BSP Clone Stock cylinder head 18cc hi compression gx160
www.arcracing.com
