[Clarke]

After pulling the engine out a couple of years ago, performing tune up (included valve adjustment), replacing gaskets/seals and putting color on it, I decided to experiment with a couple different size jets on the dyno.

Configuration: Stock engine, stock ignition and rebuilt stock carb except one size up (larger) jets. According to the dyno guy, he said I could go up another size or two on the jets.

Results attached... Topped out at 91.4 HP

52 HP @ 1685 RPM (43.5 MPH)
72 HP @ 1925 RPM (49.7 MPH)
80 HP @ 2165 RPM (55.9 MPH)
88 HP @ 2406 RPM (62.1 MPH)
90 HP @ 2650 RPM (68.4 MPH)
82 HP @ 2890 RPM (74.6 MPH)

Not sure if these results are expected? I know there is some drop between the crank and the wheels. The tag in my truck has 165 GHP @ 3800 RPM and 142 NHP @ 3800 RPM, but I told the dyno guy I didn't want to beat the engine up.

Anyway, I thought I'd share with the group.