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Dellorto Item number: BASIS0051
Dellorto

Jet -DELLORTO (type: 1486)- 5mm

13 Ratings
Die Dell’Orto Vergaser in konventioneller Schieberbauweise bei denen die Hauptdüse direkt in der Schwimmerkammer positioniert ist (also keine SI Vergaser), verwenden als:

Folgende Vergaser verwenden den 5mm Düsentyp als Nebendüse:
PHBH, PHBL, VHSA, VHSB, VHSC
Folgende Vergaser verwenden den 5mm Düsentyp als Hauptdüse:
PHBD, PHBG, SHA, SHBC
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The main nozzle is significantly involved in the mixture preparation of the carburettor.
If it is too small, the engine dies under full load and/or runs so lean that the piston and cylinder overheat and cylinder damage would result.
If, on the other hand, it is too large, the mixture is overgreased, the engine runs very unevenly and can only deliver a fraction of its possible power.
Here the ideal compromise has to be found.

To determine the right main nozzle, it is first chosen so large from the belly that the target should be an engine stuttering strongly under full load. Of course it needs some experience, but a nozzle is also quickly changed.

If you found such a nozzle you now mount a smaller nozzle until the engine under full load no longer stutters.

Thus one already has an ideal basic nozzle that ensures that the engine does not get too little fuel under full load, which it also needs to cool the piston and cylinder. The Dell'Orto carburettors in conventional slider design, where the main nozzle is positioned directly in the float chamber (i.e. no SI carburettors), use as:

auxiliary nozzle 4mm / 5mm

main nozzle 5mm / 6mm

nozzles.

Following carburettors use the 5mm nozzle type as secondary nozzle:
PHBH, PHBL, VHSA, VHSB, VHSC
Following carburettors use the 5mm nozzle type as main nozzle:
PHBD, PHBG, SHA, SHBC


(machine-translated)
This is how we ensure, that reviews come from real consumers.
Alexander H. from Stolberg 05/14/2025
Patrick F. from Portland 05/01/2025
Siegfried S. from Pörnbach 06/17/2025
Siegfried S. from Pörnbach 06/17/2025
Tobias E. from Adelshofen 07/22/2025
Tobias E. from Adelshofen 07/22/2025
Andreas K. from Walderbach 07/27/2025
Detlef K. from Marktrodach 08/20/2025
Oliver K. from Werne 09/17/2025
Oliver K. from Werne 09/17/2025
Andreas K. from Sundern 09/23/2025
Hartmut G. from Neu-Anspach 09/29/2025
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Carburetor jets
Secondary nozzle for
Dellorto PHBE, Dellorto PHBH, Dellorto PHBL, Dellorto PHF, Dellorto PHM, Dellorto PHSB, Dellorto VHSA, Dellorto VHSB
for carburetors from the manufacturer
Dellorto
Main nozzle for
Dellorto MA, Dellorto MB, Dellorto PHBD, Dellorto PHBG, Dellorto SHB, Dellorto SHBC, Dellorto UA, Dellorto UB, Dellorto SH1/2, Dellorto PHCF, Dellorto SHA, Dellorto SHBA
Thread
M5 x 0,75
Head diameter
7 mm
Thread length
5 mm
Total length
8 mm
 
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