The Dellorto carbs can be set up very easily and the availability of spares is good.
Even though there are a hell lot of needles and atomizers available additionally to the usual jets. To find a running setup with the Dellorto PHBL is a rewarding task. Sadly the different rev ranges are not as clearly separated as it is the case with the products of the reference class. So you need a good starting point or lots of experience or time to find the perfect setup.
The PHBL carbs are used for Maxi automatic engines to realize fast road going engines.
The use on a Lambretta is determined by people who like to retain the standard look and still want o use the original air filter box.
For the Vespa the PHBL is mainly used on the Smallframes to achive really fast road going scooters.
- Needle: D22
- Slide: 40
- Main jet: 102
- Atomiser: AQ266
- idle jet: 70
- Starter jet: 60
- Withoutvacuum connection
- without oil hose connection