Originally Posted by
colinwhisson
I just can't find the info, sorry for an old question...
I've successfully run my Super Tigre s2500 on gas with stock carb, glow ignition, just using an OS G5 plug.
It ran well for two tanks, but yes the mixture adjustments are very fine. I am confident with leaving the ignition as glow with G5 plug, but can see the carb causing grief at some stage if everything isn't spot on.
A walbro carb will be going on with adapter plate. My question is about the walbro's pulse line pump... I want to just run an exhaust pressure line to the tank for pressure. What do I do with the existing pulse line on the Walbro?
Will the carb even work if I block it or leave it hanging in the breeze?
Many thanks in advance.
Col
Ed...Disregard...won't work without pulse line.
Don't give it up. All you need is a walbro carb with a return spring in the pump side of the carb. Some carbs have these springs, but you can add them to regular carbs. With that carb all you need to do is tap the crankcase back and run a tube from a nipple there to the `pulse hole of the walbro. The positive pulse from the engine pushes the carb diaphragm in one direction, then the spring pushes it back, completing the pump cycle. I am not sure of the details, but search here on RCU for "glow to gas conversions", and it should pop up. Good luck