my engine out of the boat yesterday, because my dad hadn't pulled his smblk off of my big engine stand yet so I played with my radar gun and laptop.
Winter toy project:
TTR-125L before and after:
Stock TTR-125 8.1 hp trq 6.5
Modified to a 150 with 11.5:1 compression, cam, head work: 11.5 hp trq 8.3
Modified by www.Crowerperformance.com
That's a 40% power increase and 28% trq increase. With the stock pipe on and the screen still on the spark arrestor.
The change to the 49T rear sprocket while riding it feels faster than the radar gun shows. The stock rear sprocket is 54T and 1st gear is over like "now" and 2nd doesn't last much longer. I switched to a 49T and it still pulls the front end up without any help shifting to 2nd gear and it runs like crazy on the long TT track at the house.
Big Inch Ford Lover