Neal wrote:
If you apply the same rules of tuning to a 300 as you do to a 250 then a 300 should be beter than a 250 IMO . At least that is what our comparison shows .

But it doesn't. The "F3" 300 with VHM's and PK38's that TYGA tuned and was run up on Steve's dyno showed that. It makes 72hp... within 0.5hp of it's previous run at an independant facilty a few months prior.

Interesting note:

A very good NSR250, without all the HRC goodies, will make 69~70hp. (Bill Limbs made 69hp with stock pipes)

Steve's NSR500Vs make 137~140hp.

By those figures, a 300 should make around 83~84hp. It doesn't, and none have come even anywhere close... not even within 10hp "close".

Something is flawed with the design. The 300 kit does not compliment the 250 bottom-end, the pipes, the ignition, or possibly a combination of all three. This is why we now accept it for what it is, not for what it was hoped it promised 10 years ago. You can't fight the physics of it.

And I'm afraid what we've learned over the last 10 years is not up for discussion on the forum. It makes us money, and makes us fast motors. It makes NSR250 that out perform NF5's and hang with NX5's! It's cost us a lot of time and money to get where we are. Thousands and thousands of Pounds, and hundreds, maybe thousands of hours.

A lot of information has been shared both ways with Matt, and Steve and I have both sat for hours with him over countless beers going over thoughts and ideas relating to 250's and 300's. Steve has even lent Matt NSR500V parts to look at now. However, you will note that TYGA do not pour their knowledge out on a forum, and nor does Frank Wrathall, Clive Padgett, Bob Farnham, or any other tuner.

Edited for grammar.
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Andy.
NSR-WORLD.COM

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