BGM FASTER FLOW SI carburettors - optimized series carburettors for performance-enhanced enginesHigh-performance engines require a continuous and reliable supply of fuel.
The BGM PRO Faster Flow carburettors are optimized to meet these requirements and are based on a brand new SI24/24 E or SI26/26 E Dell'Orto/Spaco carburettor. They are completely disassembled, checked, overhauled, cleaned and reassembled with great care in-house, so that they also meet the high demands of a heavily modified engine.
MODIFICATIONS
an enlarged connecting bore from the float chamber to the nozzle block
an additional hole in the area of the float needle
spring-loaded float needle
These modifications lead to a significantly improved supply of fuel, which means that even with very powerful exhaust systems there is no lack of fuel. This measure is particularly important when using an air funnel in order to keep the mixture composition stable over the entire speed range. The spring-loaded float needle has a significantly longer service life and can compensate for vibrations very well, and the improved fuel supply is of course also an advantage on complete standard engines.
ADVANTAGES
- No more empty nozzle block when using a powerful exhaust
- still easy to tune even at power levels above 20 hp
- Unobtrusive and powerful
- Quiet and suitable for everyday use (separate lubrication!)
AVAILABLE IN
Ø24mm cross-section
Ø26mm cross section
for mixed lubrication 1:50 (oil is added manually when refueling)
for separate lubrication (vehicles with oil pump as standard, from 1984)
SUITABLE FOR
The carburetor is suitable for all engines with SI20/20D or 24/24E carburetors.
These are all Vespa PX80 (V8X), PX125 (VNX), PX150(VLX) and PX200(VSX) models.
Please make sure that the vehicle already has an oil pump (all models from 1984 onwards, in which case select the carburetor with separate lubrication).
They are also suitable for all older engines with rotary valve control (crankshaft controls the intake).
These are e.g. Vespa VNB, VBA, VBB, Super (VBC/VNC), GL (VLA/VGL), GT/GTR (VNL), Sprint (VBL), Rally (VSD/VSE).
It can therefore also be used on models with originally only 80-150cc that only have a Ø20mm carburetor ex works.
TIP: Carburetors for engines with separate lubrication can also be used on engines without an oil pump if the pull rod for the throttle slide is replaced.
They only have a hole for the externally supplied oil. On engines without separate lubrication, this hole is closed by the carburetor sump.
CHANGES
Older vehicles (e.g. VBB, VNB, VLA/VGL, VLB) still have small air filters, which should be changed to the filter of the PX models. The carburetor bowl of the models with the original Ø20mm carburetor should be adapted to the cross-section of the larger carburetor in the transition area to the engine. This allows the full cross-section of the carburetor to be used.
TUNING
The installed jetting corresponds to the standard jetting of the PX200 models.
This is already very suitable for many tunings on a 177cc basis, only the main jet should be adjusted.
Engines with 200cc and more sometimes require slightly larger secondary jets (e.g. 58/160).
Tuning is generally done from too big (too rich) to lean.
The initial jet sizes should therefore be selected so that the engine stutters (over-rich). This gives you a safe starting point for tuning.
This is best done with our nozzle sets.
NOTE
Modified (drilled) air filters or intake funnels always require richer jets due to the improved air correction. The intake funnels (also known as venturi) may require a main air correction jet that is smaller and therefore has a lubricating effect (e.g. 140 instead of 160).
Tips on the operation of the individual carburetor components can be found under the individual parts (secondary jet, air jet, slide).
All new SI carburetors are manufactured under license by Spaco in India. These carburetors have been used by Piaggio in series production for a long time. They are of the same high quality as the original Dell'Orto carburetors. They also undergo quality assurance at Dell'Orto and are therefore sometimes packed in Dell'Orto boxes.
CONCLUSION
Very inconspicuous tuning carburetor that already has all useful modifications on board and also supplies engines with well over 20 hp with fuel safely and permanently!
(US 21820)
DE | €
