what is the difference or improvement of the speed card from the old NT carbs?I`m running the SPEED carb. with great results and no issues at all.... Straight from the mail box to the motor and runs sweet.... It`s a big PERFOMANCE carb. but it`s handling my motor with all the stuff I`ve done to it, billet head, porting, ect.ect.ect.....
The speed carb sounds pretty good to me. The price I can handle and if it works right out of the box, better yet. Who sells this?I wondered the same....The slide is bigger, the throat is 3mm bigger, it has another shutoff valve, drainable float bowl...For $25 I figured I`d give it a try....It works pretty dang good for me....No jetting change, just put it on and hauled ass.....But still no pilot jets.....
X2....Thats why I didn`t go to the CNS carb....I did open up the ports a little and a nice exh. system and the stock carb. was holding it`s own at the time....The Speedway carb. isn`t overly perf. orientated and didn`t have to fiddle with it much at all....First question you should ask yourself is am i getting the most out of the carb im using.
A bigger carb wont fix 4 stroking it will make it worse, An 18, 19mm or 21mm?? carb would be worse on a std engine exhaust setup. If you do buy a "performance carb" or really just a bigger carb 99.9% of the time you will need to rejet it.