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Jet -MIKUNI (type: 4/042) TM/TMX, AMAL ARRECHE - (70)
Part no.:
2801070
Description
The main jet is significantly involved in the mixture preparation of the carburettor.
If it is too small, the engine dies off under full load and/or runs so leanly that the piston including cylinder overheats and cylinder damage would be the result.
If it is too large, the mixture becomes too greasy, 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 correct main jet, it is first of all chosen so large that the target is an engine that stutters heavily under full load. Of course it needs some experience, but a nozzle is also quickly changed.
AI-translation
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Manufacturer Information
Arreche
Padre Larramendi 32
20400 Tolosa, Gipuzkoa - Spain
https://arreche.es/
info@arreche.es
Responsible Person for the EU
Arreche
Padre Larramendi 32
20400 Tolosa, Gipuzkoa - Spain
https://arreche.es/
info@arreche.es
If it is too small, the engine dies off under full load and/or runs so leanly that the piston including cylinder overheats and cylinder damage would be the result.
If it is too large, the mixture becomes too greasy, 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 correct main jet, it is first of all chosen so large that the target is an engine that stutters heavily under full load. Of course it needs some experience, but a nozzle is also quickly changed.
Once you have found such a nozzle you mount a smaller nozzle until the engine does not stutter under full load any more.
This way you already have an ideal basic lubrication which ensures that the engine does not get too little fuel under full load, which it also needs to cool the piston and cylinder. A safety optimum is an engine adjusted in this way, which throttles down very slightly when the throttle is closed again under full load.
Arreche, a Spanish manufacturer of carburettors and carburettor accessories, produces carburettors from Amal and Mikuni (under licence) according to a classic design.
So in the Arche carburettors hexagonal main jets are used, as they are also used in the modern Mikuni TM/TMX carburettors in a rather similar design. Among other things, they are not compatible with each other due to the different threading.
The Arreche nozzles are graduated in steps of five, e.g. 60, 65, 70,,,
AI-translation
+----------+
Manufacturer Information
Arreche
Padre Larramendi 32
20400 Tolosa, Gipuzkoa - Spain
https://arreche.es/
info@arreche.es
Responsible Person for the EU
Arreche
Padre Larramendi 32
20400 Tolosa, Gipuzkoa - Spain
https://arreche.es/
info@arreche.es
€4.15 *
incl. VAT plus shipping costs
Available immediately (delivery time 1-3 working days*)
P
For this item you get
fidelity point/s
| Carburettor jets | |
|---|---|
| used with carburettors brands: | Amal Arreche, Mikuni |
| jet type (manufacturer code): | 4/042 |
| used as main jet in: | Arreche 17.5, Arreche 19, Arreche 21, Mikuni TM24, Mikuni TM28, Mikuni TM32, Mikuni TM34, Mikuni TM36, Mikuni TM38, Mikuni TMX27, Mikuni TMX30, Mikuni TMX32, Mikuni TMX35, Mikuni TMX38, Mikuni VM16, Mikuni VM17, Mikuni VM18, Mikuni VM20-151, Mikuni VM20-179, Mikuni VM20-273, Mikuni VM24, Mikuni VM26, Mikuni VM28, Mikuni VM30, Mikuni VM32, Mikuni VM34, Mikuni VM36, Mikuni VM38, Mikuni VM40, Mikuni VM44 |
| diameter head: | 6 mm |
| thread: | M5 x 0,9 |
| length of thread: | 5 mm |
| total length: | 11.5 mm |
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