Re: which should I get: 49cc slant or flat?
I have one of each type, a grubee 48cc slant head and a bgf straight. They both run well, it took a little more to get the bgf to run as it should tho. The piston skirt did not clear the intake port like the grubee does, the power was less. After machining the piston for the port clearance the bgf runs as it should.
Your results may not be the same,Greg