Engine build has started. Yeehaa!

[Mental Trousers]

... and it begins

First stage is dyno to see what works followed by engine work.

Read all about it

http://motorcycle.co.nz/sites/default/files/wellington_logo.png

[Tony.OK]

I fucken knew there was something dodgy about Drew.............Vampire bloody diaries And he's got the cheek to say Honda riders are ghey

Do ya take out the valves and comp rings off the piston to reduce drag etc?





I use google maps on my ph, just use the navigate function, uses piss all data and does all the talking stuff a GPS does.

[Mental Trousers]

Google Maps is what I was using and it was telling me to catch a fooking bus!! Screw that.

[FROSTY:Me]

I use google maps on my ph, just use the navigate function, uses piss all data and does all the talking stuff a GPS does.

SHEESH all that modern technology and a $20 map book woulda got him there easier

[Yow Ling]

so on your base runs how much power was it making?

[nzspokes]

Wonder what they could do for me old Bandit.

[Mental Trousers]

so on your base runs how much power was it making?

Hard to say. Everyone knows that dyno reads high so the 100hp on the graph isn't a reliable number. The shape of the graph is, but the actual number needs to be corrected. I don't know how much it should be corrected by though.

[Yow Ling]

Hard to say. Everyone knows that dyno reads high so the 100hp on the graph isn't a reliable number. The shape of the graph is, but the actual number needs to be corrected. I don't know how much it should be corrected by though.

yea I was wondering how much loss there is when you disable a cylinder, and how much gain when you then remove the valves or whatever you do, % of the baseline would be interesting , dont need to know the exact figures, I guess it all depends on how tense you get about sharing information, the ESE thread in buckets is a good example of sharing, not much of it happens in the racing thread, although Wobbly has posted the Dyno graph for his RZ400 F3 bike 97 Hp 100kg still needs to find a bit more !

[Mental Trousers]

yea I was wondering how much loss there is when you disable a cylinder, and how much gain when you then remove the valves or whatever you do, % of the baseline would be interesting , dont need to know the exact figures, I guess it all depends on how tense you get about sharing information, the ESE thread in buckets is a good example of sharing, not much of it happens in the racing thread, although Wobbly has posted the Dyno graph for his RZ400 F3 bike 97 Hp 100kg still needs to find a bit more !

97hp and 100kg?? That's just showing off

I'm not sure what the percentage is when you drop a cylinder out, but most of the good 450's are getting around 82-85hp. They're mostly stock motors with the valves in a cylinder removed rather than fire breathing Super Sport beasts so they should be getting somewhere in the region of 120-130hp as 600's. So it's less than 75%.

Some of them are no doubt getting more than 85hp, but I couldn't tell you which ones.

The biggest problem though is everyone uses different dyno's and trying to compare hp ratings from different dyno's is hopeless.