Bigmac
Mastermind Approved!
- Local time
- 3:31 AM
- User ID
- 5937
- Joined
- Apr 19, 2018
- Messages
- 5,437
- Reaction score
- 37,576
- Location
- Oregon
The heartbreaker said 64hp 42lbs of torque, made 30 ish pulls and only found 2hp, I changed tuming, powervalve springs and the main jet was the only power adder, it was basically dialed in, but I learned a lot about the powervalve tuning, I trimmed the short spring 1/4” and it lost 5hp, put a original spring in and it lost 5 hp, and it was a 1/2 longer, it was interesting, 2 degrees of timing less,,hurt cut 2hp below peak and gained over rev. It felt a little fat, but it wasn’t crazy off, one more main jet leaner and it lost 5hp, kinda crazy , it was super consistent at 60-62hp and 40-42lbs of torque