Motorcycle carburettor nozzles

Dellorto M5 - Page 4

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Products reviews

2021-04-15, 10:21

Mirosław

Dellorto M5x0.75 main nozzle [072].

I am in the process of tuning the PHBG 19mm carburetor on my AM6 engine after changing the displacement from 50 to 74 cc (Yamaha DT 50 SM, 2007). I purchased three nozzles with calibrations 070, 072, 074 (factory 075), which will allow me to optimize the mixture. With the original settings (nozzle-nozzle) there is great performance, but unfortunately, after a while the plug gets covered with carbon deposits. The engine starts to jerk and loses power. From the cylinder-tube connection, it begins to "spit" oil from under-fired fuel (mixture correct 1:50). After swapping the nozzle from the factory one (075) to nozzle 072, the engine stopped "spitting" oil the candle takes on a brown color (no black deposit). But, as it happens in life, something at the expense of something - the power slightly decreased. However, I am of good thoughts because there are visible effects, I still have other nozzles that will allow me to accurately determine the mixture. So it is worth it to have several nozzles to choose from.

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2018-05-18, 16:26

Dominik

EBC main nozzle type Dell'orto M5 [86].

The nozzle fits dellorto 21 carburetors I know because I ordered for such .The product as in the photo and description ie :with a notch for a flat screwdriver and m5 thread.It is useful when we need to adjust the carburetor for example:after changing to a larger cylinder, etc.

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