200 xri, what premix

[beck427]

I believe the previous owner was mixing 50:1 but I am reading allot of 40:1 threads. Any thoughts on which direction to go???
they are twins on a 24' pantera

thanks in advance

[pyro]

50:1 up to 6000 RPM. 40:1 is not a bad idea if you're turning it 6500 all day.

[beck427]

Thank you