We have an Lt80 that we bored to 51.50mm and goin to block off oiler and what is an good ratio to mix with amsoil? what should my piston and cylinder clearance should be? ring end gap? we already have carb. ported and fmf pipe, gear ratio changed, just curious bout fuel ratio? Thanks in advance.

 

What the oil says to mix at. Most amsoils are 50:1.
Clearance should be .003- .0035...

 

Thanks LT just geting advice from other to see anyone have had problem mixing 50;1

 

We've run over 50:1 with amzoil for trail machines, been up to 100:1 on race machines with a high end synthetic.

When building a modified racing 2-stroke, good rule of thumb is the more HP the engine is makeing after being modified, the more additional cylinder clearance you'll need above stock. HP makes heat, heat grows pistons, especially in an air-cooled motor. If you are going to run stock clearances, better run an oil mix more like 32:1.
We run 0.006" with cast pistons, Wiseco's need even more to prevent sticking because of their thermal expansion rate.

Ring end gap, not more then 0.007"

 

have used MC1 for years at 50:1 the LT80 is a great machine there is lotsa mods for it