francisjohn
Active Member
Yes, they should have 40mm but have been coming with a 38mm.Exactly where have you been getting your information from saying the stroke on the P-85 changed all of a sudden to 38mm from 40mm stroke???...I have both the V-2 and the latest V-3 motors and see zero evidence of this internally.
Also excerpts from the latest V-3 advertisements since they just got more of them back in stock.
"The Phantom boasts a 52mm bore, redesigned, single piece cylinder combined with a 40mm stroke that makes this the biggest, fastest, most powerful bike engine you can buy. The bike engine kit comes standard with an upgraded CDI, the latest performance Speed carb, a reed valve, a double window piston, and a brand new class of high-end exhaust."
- 85cc 2 stroke engine with one piece cylinder and head
- Reed valve air intake
- Needle bearing for piston wrist pin
- High performance Speed carb
- Angled LD Z8C spark plug
- Performance magneto
- Stainless steel allen bolts
- Better balanced crank
- Upgraded bearings / 60% thicker crank case around bearings
- Stuffed crank case
- Large intake port (40mm bolt hole width)
- Oversized round exhaust port - 28mm diameter, 60mm stud spacing
- 40mm crank stroke (more powerful, efficient, and reliable)
- Double window piston
- Long rod (89mm)
- Larger 8mm x 1.25 engine mount studs
- Approximate engine dimensions: 9" x 9" x 5"
Long rod doesn't equate to stroke. You can have a 38mm long rod, take the AF80 for example. The radius from the center of the crankshaft to the center of the connector rod pin on the crank dictates stroke.