F4.6 vs K4.6

[DPAndrew]

does anyone know just what the differance is between the F4.6 and K4.6 HPI Nitro Star Engines?

 

[farmawi]

the f4.6 produce a 2.9 hp with a 32000 rpm and a 7.5mm carb also it's a 2 needle adjustment engine


the k4.6 produce also 2.9 hp with a 38000 rpm and a 8.5mm card and its a 3 needle engine so it have more tourck and mour rpm than the f4.6

 

[Larsenracing]

I locked this thread because there are 2 of the same ones going right now.
Here is a link to the other: https://www.hpisavageforum.com/forums/showthread.php?t=8822

 

[Bankrupter]

the f4.6 produce a 2.9 hp with a 32000 rpm and a 7.5mm carb also it's a 2 needle adjustment engine


the k4.6 produce also 2.9 hp with a 38000 rpm and a 8.5mm card and its a 3 needle engine so it have more tourck and mour rpm than the f4.6

Also claimed HP and true are very different. No Nitro mill make this much power at all.
Different manufacturers different motors all together.