Hello!

Sorry for writing in English, but my german sind sehr slecht....

I'm going to tune my Polini208 engine further.

Going for longstroke, and maybe a reed.

But now I've rotaryvalve, and using a Koso 30mm carb.

What carb do you recomend for either longstroke with rotaryvalve induction and what carb for reed?

thanks!

hey svinte. the only problem showed@the carb of every tuned rotaryvalve engine will be the sprayback, in form of overriched mixture.

reedvalve engines r basicly easier to set up, so if you want to change either, dont worry.

expecting you want to build up a "torque" roadgoing engine, the 30mm koso would be a good and cheap choice-

-if you do the calculating of port timing with the crank!

-matching casings everywhere

-choosing right exhaust, for example something from PEP (member here: "melkfett").

more infos about carb settings with (matched?) 30mm koso and 60mm crank, plus ported? polini208, baseplate? squish? timings?

print out this first, and learn about timings (search here 4 example: "vorauslass")

http://images.google.de/imgres?imgurl=http...l%3Dde%26sa%3DN

are u from bergen?

Hi cal.68!

I'm not from Bergen. I'm from Stavanger, south of Bergen.

The engine has the casings matched, but I'm not sure of the port timing...

It wasn't me that built the engine... Therefore I'm not sure of the squish either, but I'm using a MMW-top made for the Polini.

There are no baseplate.

The ignition is 17 -I think...

The exhaust is a B-race Dominator

The main problem is that I'm not pleased with the Koso. It has been very hard to jet, and the quality seems poor...

Therefore thinking of either a Dellorto or a Mikuni. -what do you think?

Regards!