Our new Liquid Cooled DRX90s--Serious Power

First off I have to say the OKO carbs on this version of 90 are putting some serious power to the ground....


Not sure if DRR gave the head and cylinder a tweak or two, but man these new 90s move!!!


Only problem is that they come jetted way out of line!!

Somone (not to be named here) requested that the main jet be a 140 and the pilot a 52.....Not a good idea

but

we have ours running strong with a 98 MJ and 42 Pilot and the needle in the middle seting....

We have about 40 of them like this, I am hoping that the new engine mod proves to make them more competitive out of the box