I’m planning on putting a mikuni carb on my clone motor I’m wondering if I have to remove the governor to do this I would like to keep the governer on if I could and my other question is do I have to by a fuelpump If I run the stock gas tank
The governor will not work with an aftermarket carb.
If you want to keep the governor, then get somebody to build you a Bored out Stock Appearing Carb.
No pump needed with stock tank in stock location.
Call Jody at ARC Racing or Russel at NR Racing.
Tell them what you want to do and see what carb will work best.
0.615" is stock.
I've seen 0.625" to 0.685" or 0.690" available to buy off the shelf, but don't know what will work best. Those might be for WOT throttle racing and not perform great with lots of stop and go. The larger ones say marginal low end and idle quality loss.
Some bored out S/A carbs have the choke removed, so consider starting the engine when looking at carbs as well.
Stock carb or this one below might be best options.
http://www.nrracing.com/product-p/16100-65cln-bored-650.htm
