Comes into its own and works well on reed engines, 200cc+ and any thing with an expansion exhaust. Ideal for use with box pipesĢ8mm PHBH is piggy in the middle, works as an average on any motor.ģ0mm PHBH while it can be fitted to small cc motors with box pipes etc, you will get more speed, but at the expense of some low down power grumbling and added fuel consumption.

Box pipe, or expansion, the PHBH can cope with them allġ50 - 175 - Casa 185 - Scootopia 185 - Mugello 186 - BGM 195 - GT186 - Imola 186 - SuperImola 186 - Mugello 198 - Mugello 200 - GT200 - Monza 200 - Mugello 225 - Monza 225 - SuperMonza 225Ģ6mm PHBH gives better low down cleaner running, at the expense of some top end speed. The cheapest and easiest way to add power by way of carburation, the PHBH is available in 26 / 28 /30mm and works well with piston port engines. You can get them in solid mount, rubber mount, as well as many other guides and choices.

Probably THE most common carb used within the scootering world, the PHBH has been around for ever.

Dellorto Phbh 28 Manual