Yamaha/ Champion Performance Bulletins?

[203DCXLTD]

Am in the process of tuning my new 2008 203DCXLE/ Yamaha VZ250TLR combo. In the Yamaha Performance Bulletin (same engine, but on a Champ 210) they mention engine height as - "Mounting Height 4-7/8" Above A/V Plate" - what the heck is a A/V plate???and where are they measuring from & to?

Just curious, am getting close on the set-up on mine - @ 5500 am going 69 mph, GPS. In the bulletin they show the 210 doing 73.1 @ 5925 RPM's, so I guess it's OK to turn this engine close to 6000 by Yammie's specs.

Here's the link to the Yamaha Perf. Bulletin:
http://www.yamaha-motor.com/as...r.pdf

Anybody know the answer to where they are measuring this "Mounting Height" ?

[spider1]

You can turn that motor at 6149rpms thats where I run mine!!!

[BuzzB8]

A/V would probably be Anti-Ventilation plate (sometimes called the cavitation plate). Other than that, I don't know what they're measuring it to, unless they're saying that the plate is 4-7/8 inches above the pad (in which case, I would think it's worded wrong).

As said above, I wouldn't be afraid to get it close to the rev limiter (6,150) with a lite load.

[Darth VMAX]

The min RPM I would prop any VMAX would be 5800. They are fine at 6000