TZR125 4DL
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Dyno cut cylinder legs

TZR125 Track Dyno

Today I dyno the changed cylinder

It looks like removing the legs like SP or SUGO style is not a good idea.
On the setup that I have, it costs me two HP and that is massive.

Don't have a real explanation for it, but it is clearly not working correct.
Perhaps in a different setup it could work, but for now it wont

I started already bad with runs from 24.150 till 24,400HP
Had a feeling that the engine was running rich with the 168, so started to drop the mains

With a 160 Main the engine was at it best and revving better

Here you see the impact off the jetting
168 main vs 160 Mains

Here you have a run with the cut legs vs the O-ring setup.
You could say, its better in the mid section, but that was not what I was hoping for

Sadly but can't make it different this mod is not a good idea
Will use me other stock 4DL cylinder and start all over again.

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