USGPRU

2012 no 2strokes in 125gp, always 2 strokes in usgpru

As long as I'm running the USGPRU, there will be a place for the 2-strokes to race.

Hi All,

We are contemplating taking part in the final race at Miller in October. As this will be our first time running at Miller I have a few questions:

1) Will practice be available on the Fr ...

Former USGPRU racer and our favorite #8 Josh Herrin and Chris Kruzel from Drippinwet.com set up a website to accept donations for Peter's family. Please take a moment and 10 bucks to help them out! ...

Running in a piston is not as crucial as it was in the past.

In the past engines were air-cooled and the cylinder expanded very unevenly. Engine builders would run the engine, then pull it apart to ...

You have answered the question yourself.

You said that changing the jetting Had an effect, it changed the cough from 9000rpm to 11000 rpm. And that the bike only does it at the start of the session ...

Hi there, my 2003 does the same thing under certain circumstances. It does it when its too rich, when its too cold or when im taking it easy.

Is it just when you snap the throttle open? Does it cle ...

Really wish I would've been able to make that trackday. Sounds like you got a lot of track time.

Once again, thanks for your help (again!) when I had "new" issues pop up. glad I got the bike figure ...

Pulled both bikes out, mixed a little fuel, and pushed.

both came right to life immediately and ran great!

So both bikes are in great running order.

If you are still running the stock Yamaha plug cap, check it per the manual for resistance. They tend to go bad regularly.

Not sure yet, I'm running our 125 class and my DIESEL BOAT

Fixed it for you.

Thanx so much Shellie, I'm installing said piston this evening.

INGO the tech dude sweating and playing Techno at 6:30 AM...

Not sure yet, I'm running our 125 class and my 600 so we'll see.
Ent ...

Cascade tracktime is running friday, and there priced pretty fair,

If memory serves, they don't allow riders under 13 at their trackday events.

Still in reasonably repairable shape if desired. It was my first 2-stroke and I didn't warm it up properly, so it seized up between turns one and two at Thunderhill. I had it inspected by local Aprili ...

How many MD250S are running in stock form in the Moto3 class? and in Modified Form?

All good questions folks. Keep em coming.

I am listening and don't mind repeating answers to questions I've already addressed. I know not everyone reads every post.

But I don't want to keep ni ...