kid kart 79cc predator max rpm?

Nickp

Member
Hi, I was wondering what the target max rpm should be for my sons 79cc predator? he is on a kid kart chassis and we will be racing asphalt road course and large dirt oval. not sure on the kart weight, but it aint much, hes only 35 pounds. the motor has the governor removed, pipe, air filter and jet. I just picked up a tach but havent ran since to know where were at yet. I am just looking for a ball park to know where to set the gearing. Thanks!
 

flattop1

Dawg 89
Lap times will tell the true story .
I would think no more then around 4500 if it will pull that or the rod don't come out .
 

Nickp

Member
Ok, thanks for the reply! I will keep an eye on lap times. I was thinking 5,000ish but not after pulling the valve cover to tap for a catch can. I noticed how tiny the valve springs are.
 
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