Help With Jetting On Bike Carbs

[Guest V8ish]

Hi people,

I have had my car in for a set up and apparently the main jet is massive, it is a 200 gauge and the RR guy thinks it should be a 160-170. They are Khein (SP?) from a ZX-9 so the main jet is not adjustable. The dia is 6mm.

 

200 seems massive so no wonder it drinks fuel.

 

Question is, is this guy right and how do I source smaller jets for these carbs if so?

 

 

Appreciate any help as I'm not sure on where to go from here!

 

Grant

[mattbenselin 0]

Hi mate I 2 have some Keihin carbs from a ZX9R and will be fitting them properly over christmas. I asked this same question not long back... http://forum.205gtidrivers.com/index.php?showtopic=98147 . I was advised to start with a 200 and go up from that!

What spec. is the rest of your engine? Pic of it would be nice 2

 

Matt

[Richie-Van-GTi 72 2 Cars]

last bike carbs set up I played with was running 165's, 200's is huge IMO.

[Guest V8ish]

last bike carbs set up I played with was running 165's, 200's is huge IMO.

 

 

ok, just an update on this which may help other people. I have settled on 155's, the rr guy tried everything from 140's. The car is so much more economical and after his tweaking it managed a 10 bhp increase from before.

 

its now at 133bhp and 125 torques. standard lump with bike carbs....what do you think?

[ORB 227 1 Cars]

if it helps, my MI16 running R1 Carbs is sporting 175's

 

She seems happy on these!