rejetting

Is it necessary to rejet after putting a stage 1 upgrade?

Just purchased a Predator 212cc Hemi for use in my mini bike but had to remove air filter for frame clearance. Will replace stock air filter with aftermarket filter and adapter but not sure what needs to be done as far as rejetting. Engine is completely stock. Any experiences? Any help? Thank...

Just wanted to thank members past and present with the help I received. I installed a header, performance muffler and Uni filter on my 6.5 clone. After installing air filter, bike ran very poor, so I asked for help and searched old threads. The problem was the carb main jet. The recommendation...

I cant seem to locate what I'm looking for. So, i'm looking for a little help. I put a uni filter on and a straight header. Now, I need to rejet the carb. My question is..is there a guide/video on how to do this? This is my first small engine Ive worked on so I'm still new to everything...

ok, i have a question about rejetting a clone. i see where one guy says to use a #72 here http://www.oldminibikes.com/forum/honda-clone-engines/17331-drilling-jet-hard-start-clone.html and then i see where another guy says to use a #77 here...

well I took the jets out of my carb today. it turns out there is a 95 main jet and 15 pilot. so I ordered a 130 and a 132.5 was thinking if I should call him tomorrow and get a 140? or is that too big. In exchange for the 15 pilot I got a 17.5 does anyone got some advice on my jet setting. My...

A neighbor gave me a kart with a briggs 5hp Model#130202 engine. He also gave me a couple of boxes full of spare parts. As usual, I can't leave something stock so I did some research and was amazed at the amount of aftermarket/hotrod parts available. So yesterday I took the head off and...

hey gents, just looking through the AGK webpage, Affordable Go Karts - Home page - AGK - http://www.affordablegokarts.com and was wanting to rejet the carb on my 5.5 clone. They sell a #90 jet and emulsion tube. Has anyone done this? worth the money? or is it a waste. Thanks in advance. BTW...