Voorkamer groter maken 23C
Geplaatst: za 29 jan 2022 12:51
Bij het zoeken naar meer info over het 23C blok ben ik op een topic gestoten van thefarmingforum uit het UK.
Daar zegt men het dat het iets groter maken van de openingen naar de "pre combustion chambers" de motor beter zou doen starten (zie tekst hieronder).
Daar is het blijkbaar een gekende techniek om met behulp van een vijl deze opening( vrij vertaald: de voorkamer?/ wervelkamer?, de opening die zich boven 2 kleppen bevind) iets groter te maken. Ook bij Vintagetractorengineer zouden ze het steeds doen.
Een how-to was vroeger beschreven op de website van Thetractorlad, maar deze link werkt inmiddels niet meer.
Heeft dit hier al iemand gedaan? Nu ik binnenkort de kop van mijn 23C ga halen is het misschien iets om meteen mee te nemen in de revisie.
The openings to the combustion chamber would be far better for starting, if they were opened out a bit,
It is best to place the head gasket onto the head as it should be, mark round the inside of the head gasket near the combustion chambers, this will give you a guide as not to cross the line,
I find it is best if you can sort of bell mouth the holes out, rather like a funnel as it were,
what I use is a chainsaw file, snap bits off about 60mm long, grind the ends smooth up the shaft of the file about 5mm long,
the smooth bit stops it biting into the inner side of the chamber, place the bit of file in an electric drill, work it around the hole taking bits off each side, and also the pointed end of the opening, as the file wears, turn it around in the drill and use other end again with a smooth bit ground about 5mm to stop it digging in on the inside,
the hole wants to be about 12/15% bigger with the last outer 5 /6 mm being a funnel shaped bit, this will increase flow of air into the combustion chamber and thus increase compression in the combustion chamber and will aid starting,
the above method is better than fitting heater plugs in every chamber, and keeps it original
the problem is lack of air flow in to the chamber, when new by the time the air thought about going through the hole into the chamber, the piston was on its way back down to the bottom,
bloody good engine, once you get all the mods done, and the timing set spot on.
Daar zegt men het dat het iets groter maken van de openingen naar de "pre combustion chambers" de motor beter zou doen starten (zie tekst hieronder).
Daar is het blijkbaar een gekende techniek om met behulp van een vijl deze opening( vrij vertaald: de voorkamer?/ wervelkamer?, de opening die zich boven 2 kleppen bevind) iets groter te maken. Ook bij Vintagetractorengineer zouden ze het steeds doen.
Een how-to was vroeger beschreven op de website van Thetractorlad, maar deze link werkt inmiddels niet meer.
Heeft dit hier al iemand gedaan? Nu ik binnenkort de kop van mijn 23C ga halen is het misschien iets om meteen mee te nemen in de revisie.
The openings to the combustion chamber would be far better for starting, if they were opened out a bit,
It is best to place the head gasket onto the head as it should be, mark round the inside of the head gasket near the combustion chambers, this will give you a guide as not to cross the line,
I find it is best if you can sort of bell mouth the holes out, rather like a funnel as it were,
what I use is a chainsaw file, snap bits off about 60mm long, grind the ends smooth up the shaft of the file about 5mm long,
the smooth bit stops it biting into the inner side of the chamber, place the bit of file in an electric drill, work it around the hole taking bits off each side, and also the pointed end of the opening, as the file wears, turn it around in the drill and use other end again with a smooth bit ground about 5mm to stop it digging in on the inside,
the hole wants to be about 12/15% bigger with the last outer 5 /6 mm being a funnel shaped bit, this will increase flow of air into the combustion chamber and thus increase compression in the combustion chamber and will aid starting,
the above method is better than fitting heater plugs in every chamber, and keeps it original
the problem is lack of air flow in to the chamber, when new by the time the air thought about going through the hole into the chamber, the piston was on its way back down to the bottom,
bloody good engine, once you get all the mods done, and the timing set spot on.