Hey folks,We just completed the head swap on our modded HF predator. It is SO much easier to pull start. Any thoughts why?
PREVIOUSLY- 14cc clone head (self ported and polished...first time), Mod 2 Cam, Honda .625 carb, velocity stack, Header, SS valves, 1.3 rocker intake, billet rod and flywheel, stock dished head, .2 in hole. /1 gasket
NOW- 18cc Honda Head (NR racing ported and polished 27 and 24 valves, milled 0.50)...everything else is same
Before the swap, the engine was hard to pull start (Im a pretty strong guy), would occasionally snap back and destroy my hand (my 150 lb athletic son was unable to pull hard enough to start)
Now....when I pull starter and find compression, it feels much less....actually really easy to start. No dyno, so no objective measure of power. Butt dyno feels the same or slightly more powerful.
Any thoughts on why this is so?????
PREVIOUSLY- 14cc clone head (self ported and polished...first time), Mod 2 Cam, Honda .625 carb, velocity stack, Header, SS valves, 1.3 rocker intake, billet rod and flywheel, stock dished head, .2 in hole. /1 gasket
NOW- 18cc Honda Head (NR racing ported and polished 27 and 24 valves, milled 0.50)...everything else is same
Before the swap, the engine was hard to pull start (Im a pretty strong guy), would occasionally snap back and destroy my hand (my 150 lb athletic son was unable to pull hard enough to start)
Now....when I pull starter and find compression, it feels much less....actually really easy to start. No dyno, so no objective measure of power. Butt dyno feels the same or slightly more powerful.
Any thoughts on why this is so?????
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