DYNO SESSION #3 - January 12, 2008

My third trip to the dyno was in January of 2008 after some major modifications were completed on my 450R. The bike pulled very strong down low and made good low end torque, however; there was a very pronounced dip at the upper end of the RPM range. Jetting would not cure the dip. After months and months of testing and troubleshooting, Wicked Motors found a piece of plastic from the timing chain tensioner in the crank case lodged in the relief valve holding it open causing the oil to bypass the oil cooler and dump it directly back into the crank case. This caused the major loss in power in the top end. Read more about the crank case pressure by clicking here. See "Dyno Session #4" for the results of the fix.

Specifications during dyno session:
- 14:1 Baldwin Piston (94mm stock bore)
- WPP/Wicked Rec. Porting
- Hot Cams Stage 3 Cam
- Fuel Customs Intake with box
- Lid off w/ DASA Filter
- DASA Pipe
- Stock bore, stroke, carb, springs, valves, etc.
- JETTING - 195, 185, & 178 Mains, 52 Pilot, HRC Needle 3rd Clip

Other Dyno Info:
Sunoco/CAM2 Purple 110 (R+M/2) Fuel
American Racer Dyno Slick Tires
14/38 Gearing
Pulls done in 4th Gear
STD Correction, 5 Smoothing
Dynojet type 168 DYNO at Precision Motorsports

Best HP: 50.23 hp
Best TQ: 35.27 tq

DYNO GRAPHS (Click a picture to enlarge)
| HP/TQ 178 Main | | HP/TQ 178 vs. 185 | | HP/TQ 178, 185, 195 | | A/F 178, 185, & 195 |



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