NEW MB DELL’ORTO SPARES

Love them or loathe them, the Dell’Orto PHBH range are very good carbs; they work, they’re reliable and nearly all tuned Lambrettas and Vespas use them.

However, Dell’Ortos have a lot of adjustments. As Mark of MB Scooters explained: “It’s not just main jets, but lots of needles and atomisers. Dell’Orto numbered their needles in a strange way, which makes no sense as the numbers don’t follow. What you have to do is look at the needle diameter, the needle taper and the tip size. From there you can find a needle that works and you can find a richer and weaker needle either side of it for adjustment to your motor.” To simplify matters, MB Scooters has made ‘in between’ needles, all this based on the taper lengths.

From weak to rich: X7 - 20mm, MB X7/13 - 21mm, X13 - 22mm, MB X13/2 - 23mm and X2 - 24mm. The MB needles and atomisers are all available separately; they are also offered as a set of needles and as a set of needles and atomisers; and to help out further, just in case you lose one; that little circlip? They’ve kindly put two in the sets, which are now cheaper than before and nearly half price.

Following on from the new needle and atomiser sets for Dell’Orto PHBH carbs, MB Scooters has also developed new 45 and 50 slides for the same carbs. As with MB’s carb kits, the slides come with full back up and running-in instructions and are suitable for all PHBH type 26, 28 and 30mm carburettors. Mark explained:

“The price of a slide is probably the main reason why the item is hardly ever changed. In the past they have been expensive, but not any more because we’ve made them much cheaper!”

More info: www. lambrettaspares.com