VFR 400 Fueling

[andy levitt]

Right i took them apart. I dont have the jets but i will disassemble it when i get them delivered. In all 4 of the carbs, (front and rear.) It had 124. Which according to the guide would be miles too much. What you guys reckon? I had an aftermarket pipe on and the airfilter i think appears to be one of them washable ones. Itds red not the yellowey pape ones which are normally stock. So any ideas?

[lizard821000]

interesting, i pulled mine apart last week and found the same mate. 124 mains all round, mine turned out to be UK carbs. did you check the slides for holes as per cammos guide? i left 2 of the 124s in there and downed the others to 122s. untill she is fired up and put under load i wont know the results, but i thought 124s were a bit overkill too mate, i only had a half system and hi flow filter.!? odd. plugs were black as hell too.

[jetblack]

Sounds way too rich to me for just an end can. Get some photos up of the filter. the general concensus is that the oem filter is the best bet though...

[andy levitt]

The slides had 2 holes in either side of the needle hole too. Although i didnt check the sizes of the hole. I cant make my mind up what jets to try. Im thinking 120f 122r. The air filter is the same as this one.

http://www.ebay.co.uk/itm/Honda-VFR-400 ... 2c57747b9f .

So my bikes got air filter as above. And a viper end can connected to the standard downpipes. Jets you reckon i should order?

[lizard821000]

have a look at the carb codes mate, you may have uk ones like me, my slides where already drilled too, uk carbs already have the 2 holes in the tops see. the code on your carbs will match up to the documents on this forum, telling you where they are from/jetted too. as for jetting, if only it was that easy, there is a base line for stock jetting with standard mods from honda. you can use this as your base guide but adjust from there once its running and tested. every bike is differant mate. uk carbs run 120 and 122. if your carbs are uk id bet thats a good place to start. HTH

iv left the 124s in to what happens lol if its no good, ill rejet to suit.

[hardnutdvd]

Rick Oliver on here sells jets mate.. and is a very knowledgable chap.
his price list for all things NC30/35 is in the approved traders section. :)

[andy levitt]

Thanks pal. Ill check to see there spec tomoz. Ive ordered 120f and 122 s so ill see what there like once they arive

[andy levitt]

Right took them off again. Checked the needles out of the slides and none of them have any lettering on them. which i found odd. Also whoever messed with them last didnt put them in right as when i pulled the slides out they all were loose and just fell out. All expect one slide. I must of bought a right bodged bike. Starting to regrat buying it lol. Its all back togther now properly. The bikes flat spot seemed to have goe a little bit but still there. Although now theres a werid ticking. which i think could be fairings rattleing as the side panels aint back on. The bike doesnt seem to pull in highier rpm as before.

[Neosophist]

Right took them off again. Checked the needles out of the slides and none of them have any lettering on them. which i found odd. Also whoever messed with them last didnt put them in right as when i pulled the slides out they all were loose and just fell out. All expect one slide. I must of bought a right bodged bike. Starting to regrat buying it lol. Its all back togther now properly. The bikes flat spot seemed to have goe a little bit but still there. Although now theres a werid ticking. which i think could be fairings rattleing as the side panels aint back on. The bike doesnt seem to pull in highier rpm as before.

Non standard air-filters will need bigger jets.

Best to use a standard filter

[andy levitt]

Jet are still same with 124s in all. I waitinf for 120s and 122 to come in post. what people reckon with my needles not having the letters prints on them n slides being loose?