ESE's works engine tuner

[F5 Dave]

Ahh, it was a long time ago sorry.

Although I remember when Wheels won it. He'd shown up with a shining red hub centre front kawi with a polished fabricated ally tank. We'd never seen anything like it.

But another year it had some farm bike tank perched at a jaunty position and rubbish lids for numberboards!
Again in my notasaccurate memory.

[wobbly]

HELP - I need a 951 SeaDoo cylinder to measure the transfer axial and radial angles.
Or can someone do this for me rather than sending the thing via courier.

[jonny quest]

Give me some reasons why a power valve 250cc motor would have a flat spot in mid range on dyno, and can be felt on the track. (Motocross)

Great bottom end power, goes flat right before PV opens, then hits way too hard when PV opens. I'm currently on a later PV opening which helped on the track, but it still has a flat spot before they open.

Good jetting, good fuel. No piston pin linking to ports, don't believe I have short circuit issue between transfers and ex port.

I haven't tried different pipes on track, but I did dyno a few different pipes, they all had this mid dip.

92-01 CR250R MX application.