If you're going to do that do it right and use one of these
SPECS: Displacement: 86cc or 5.25 cid
Bore: 30mm
Stroke: 42.7mm
Horsepower: 7 HP @ 8,500 RPM
Practical RPM: 1,200 to 8,500 RPM
Ignition Style: CDI Automatic Ignition Timing
Weight: 7.11 lbs (3,228 g) with muffler
6.37 lbs (2,892 g) without muffler
Spark Plug: Champion RCJ6Y or RCJ7Y, gap of .6mm (.025")
Propeller Bolt: M10x1.5mm
Magneto Air Gap: .5mm (.020")
Engine mounting holes on rear of crankcase: 6mm (.24")
Overall Length, from back of prop to start shaft end: 197mm (7.75")
Width: 218mm (8.6") Width with plugs. 260mm (10.25")
Overall height: 203mm (8")
Length from back of mount to prop nut: 160mm (6.3")
Height from crank to top of engine: 75mm (3")
and only $800!
lol