ESE's works engine tuner

[jasonu]

...But whatever, Speedpros effort has got to be the stuff of legends.

Mike, if you don't beat the coal burners I will send my wife over there to kick yr ass!!!

[jasonu]

Here are my hand drawn dynojet 100 runs from 1997 on top of Greens latest posted graph. Mike Green was also there that night running his T Macintosh.
Bike KE125 bottom end with RG400 cylinder, D bored 28mm flat slide mikuni.
The graph labeled RS, same motor with a modded 1991 RS125 pipe.
The graph labeled TZ, same motor with a TZ500 pipe. This was the last run of the night and the only dyno run with this pipe.
When riding with the RS pipe the bike easily pulls from 8k, hits 11k and signs off abruptly. 22HP peak @ 10500
When riding with the TZ pipe it will pull from 8k but doesn't really get going until 9k. It runs hard to 12k and will over run nicely to about 12600. 24.8HP peak @ 12000

Looking at Greens graph, it seams 10k+ will be the order of the day and it should really rip. I am sure you lot will be looking at improving the low end power, you may loose a pony or two up top but with 29.8 you can afford it.

[kel]

. It runs hard to 12k and will over run nicely to about 12600. 24.8HP peak @ 12000.

Yeh but the FXR makes more power at 7k, I dont want to play any more.

[speedpro]

you'd be one of the people voting for standardised ignition systems with a rev limit, say 8,000rpm?

If the other advantage the sludge brigade have, motors that are half as big again as the real race motors, was taken away we'd still toast you.

[Yow Ling]

Standard ignition that fires every other stroke, that should give parity with the diesels

[richban]

If the other advantage the sludge brigade have, motors that are half as big again as the real race motors, was taken away we'd still toast you.

Does that mean I can go make mine a 200. 100 2 stroke 200 4 stroke. Nice round numbers always look better. I think we should be fine with a 150. All the fast weed whackers blew up last year.

[koba]

Does that mean I can go make mine a 200. 100 2 stroke 200 4 stroke. Nice round numbers always look better. I think we should be fine with a 150. All the fast weed whackers blew up last year.

The last two years have been won by Diesels after reliability issues with some fast two strokes.

[richban]

Well just got back from the Dyno. Mixed bag really. The biggest improvement has been the Mega designed by Wobbly. I has fattened up the middle nice. After a few carb changes the throttle slide cover gasket gave up the ghost and ended the session. I am quite sure that with out the big exhaust gas probe up its bum it would still top out at 24 as it did a year ago. Still to rich on the pilot and a little on the needle but happy with the main jet. Well thats the old engine still going strong after a year of racing. The new one is almost finished and is looking good.

[TZ350]

.

Rich, the old one looks pretty good, no wonder it went so well at last years TRRS, I am looking forward to seeing a dyno graph from the new engine.

Things are getting very interesting in Buckets now, with std FXR's bringing a lot of new people into the sport and others building fast 2 and 4 stroke specials..........

[richban]

.

Rich, the old one looks pretty good, no wonder it went so well at last years TRRS, I am looking forward to seeing a dyno graph from the new engine.

Things are getting very interesting in Buckets now, with std FXR's bringing a lot of new people into the sport and others building fast 2 and 4 stroke specials..........

Well its better than I thought really. My bro just pointed out that the dyno dynamics dynos are about 15% down on a dyno jet and this is common knowledge. ( news to me ) It makes sense looking at past experience on the track up against street stocks. just hanging in the slipstream on the big straights so its more like 26 at the mo. But apples to apples she has lots more in the mid. The new engine is a bit on the limit so it might make good power but also might just explode in a shower of shinny light pieces of metal. Just as long as it don't explode on the same corner at Taupo that saw me K.O ed in the gravel last year.

[TZ350]

I am very impressed by this, I wouldn't have thought it possible to get an FXR into the mid 20's. If you wanted to share a few pictures of your work I would love to see them, I have always enjoyed 4-strokes........

[richban]

I am very impressed by this, I wouldn't have thought it possible to get an FXR into the mid 20's. If you wanted to share a few pictures of your work I would love to see them, I have always enjoyed 4-strokes........

I can't take much of the credit for this really. My Bro is the brains behind most of it. We sit down and bounce ideas around then try them out. Like you guys do. The engine we are creating now was hatched at last years Taupo. Its taken a year to get it together. Hope to have it on the dyno this weekend for its fist run.

[F5 Dave]

So as I posted some while back, my old 125 on Motomart's dyno was 24hp but 19 on a dynojet. Hope that doesn't burst the bubble.

[jasonu]

So as I posted some while back, my old 125 on Motomart's dyno was 24hp but 19 on a dynojet. Hope that doesn't burst the bubble.

Shit Dave I was looking forward all day to say that!!! Dam time zones.
That puts the FXR at 22HP Motomart(not 23 as that is only a tiny spike at the end of the graph) less 15%+- = 18.7 HP Dynojet which most everyone else uses as the standard which is about what I thought a good FXR might make. A stock CRF150R makes 20HP.

[richban]

So as I posted some while back, my old 125 on Motomart's dyno was 24hp but 19 on a dynojet. Hope that doesn't burst the bubble.

Probably just some bad tuning on your part Dave.