Running a 1980 Drifter 340 with small air filter

[ChaChi]

Hey guys

I was hoping one of the guru's could help me, I've recently rebuilt the ol drifter and my airbox is a bit of a mess, with repaired cracks and it doesn't seal around the carb the best anymore... I have a uni filter sitting here off a old dirtbike I sold that fits perfectly... I am not sure of the current jet size, but could anyone offer me any assistance on what I should run with the filter?

Thanks for any reply!

[jimvw57]

The air box also keeps snow and frost from accumulating around the air intake, You will want to use one of those snow chargers, looks like a sock over the filter,

I believe the average is to go up 2 jet sizes and make a run, pull the plugs and go by the plug color, It could take a few runs and jets to get it right.