jet sizes

[jono]

i was wondering if anyone could help me by giving me the jet sizes to the mikuni carb off the F8B.. i have the ones for my weber 30DIC and want to compare them.

thanks,

jono

[nrgtic]

are u talking about the Mikuni DIDSS2430? thats the factory fb8 carby...if so ive got the jet sizes and info lying around somewhere. just let me know if you would like me to dig it up bcoz its almost 2am and i really cant b bothered

[jono]

um, that sounds rght, the factory F8B carby..

thanks mate, appreciate it.

[nrgtic]

i decided to give u a heads up with comparing carby specs so i added the throttle bore diameter and venturi diameter to help u compare the two...

Carburetor Specifications:

Item, Primary(P), Secondary(S)
Throttle Bore Diameter: P:24mm S:30mm
Venturi Diameter: P:18mm S:22mm
Main Jet size: P:# 88.8 S:#132.5
Main air Hole: P:1st=0.5, 2nd=0.4mm S:1.2mm
Pilot Jet size: P:# 40 S:#65
Pilot Air Hole: P:1st=1.5, 2nd=1.8 S:1.6mm


**taken from the Suzuki Alto SB308 (MK II Europe released Alto) owners manual which comes out with the factory f8b engine

[jono]

awesome, thanks mate

[jono]

um, i just looked at the info i have and i only have the main jet sizes in mm. what does "#88.5" mean and is there are way to 'translate' this to mm?

thanks,

jono

[Kartman]

http://roadstarclinic.com/content/view/61/96/

Whilst the chart doesn't go down as far as 88.5 one could guesstimate. Also, since we're talking about two different carburettors - just a simple conversion won't suffice. People who tune carbies for a living have a box of jets and tweak until they find one that gives the best fuelling over the range. Also, different carbies have different means of metering the fuel so again,this means a simple conversion won't necesarily give the solution you want.

[nrgtic]

the size of the jet are marked according to their flow rate
ie: #88.5 = a rating of 88.5 cc of fuel per minute