Zach Jaynes
New member
Hey guys, I'm in the process of setting up a predator for my son's jr sportsman champ. I have a brand new motor straight from Harbor Freight. The changes allowed at the track we will be racing are as follows:
remove governor
racing filter
racing header/muffler
top plate/fuel pump
I have been told that switching to a racing filter will affect the air/fuel mixture enough to warrant changing jet size. Is this correct,and if so, what size jet do you recommend starting with? Also, I figure that I may need to put a restrictor plate in as he is a 6 year old rookie driver. What size do you recommend?
Are there any other things that I need to do to a box stock motor? Thanks in advance for any help.
remove governor
racing filter
racing header/muffler
top plate/fuel pump
I have been told that switching to a racing filter will affect the air/fuel mixture enough to warrant changing jet size. Is this correct,and if so, what size jet do you recommend starting with? Also, I figure that I may need to put a restrictor plate in as he is a 6 year old rookie driver. What size do you recommend?
Are there any other things that I need to do to a box stock motor? Thanks in advance for any help.