Another "My bikes got a problem" Thread

[xwhatsit]

I don't know... well surely I can afford it but will it like.... run without a problem? lol

Gosh I'm sucha noob....

Hahah. Ask motorbyclist. It's basically the same carb as that XL250S carb, but with an accelerator pump (which you can tune appropriately or disable entirely).

See whether motorbyclist thinks it's a good idea or not. If it doesn't run and you haven't broken anything or bent needles or whatever I'll buy it back for the same $40.

[EJK]

Thanks, we'll see about that

[motorbyclist]

it's worth a go

but i'm not familiar with adjusting accelerator pumps despite my dirtbike having one, so a bit of a "this does this" would be helpful when we get it.

also a noob with the jetting, never had to mess with it, just used the pilot screw and needle height to get where i want. very keen to learn though; once i've got that mastered i don't think there's going to be much i don't know

[xwhatsit]

Well if you're keen, find out from Buddha what main jet he's using in that XL250S carb. Then go down three at a guess (if he's 118, go to 115 e.g.), as he's running open pipe/box etc. $6-7 a jet is what it cost me. Needle on leanest position. Shouldn't be hard to get it pretty close.

Adjusting accelerator pumper is just a matter of shifting a bracket. Or disable it entirely for easier tuning (although you might get that classic round-slide *gasp* if you crack open the throttle too quickly).

You're going to keep the stock airbox? Not going with a pod filter?

I'll give you a hand with it of course, I've dismantled these Keihin PD70s waaaay too many times lol.

Photocopy the pages out of my Haynes which has got all the stuff on dismantling/rebuilding these carbs.

[EJK]

I prefer the Pod Filter, cause the airbox thingy is just annoying... hahaha

[Buddha#81:Me]

Take xerxesdaphat up on his offer........My FXR is running a Airbox with no filter, Keep the airbox on with your new filter for wet weather riding if nothing else. My Pipe is pretty free flowing but this info will give you a base line.

Im running a Keihin "05ABG"?
idle jet = 40
main jet started life as a 122 but its now farken huge (try the 122)
Needle is on the middle grove.
Mixture screw is two turns out.

You have a money back garentee.......what ya got to loose?

[gijoe1313]

:slap: EJ, with all these luvverly KBers helping you out y'know they wouldn't be giving you the bum steer!

Xerxes may be onto a winner here! Helpful that this young chap has managed to work so much on carbs due to necessity! His expertise will be most helpful!

[FilthyLuka]

Get the Xerxes carb of him, do it. For a couple of greenies its like, nothing. As far as the airbox goes, ditch it for a pod. Not for performance sake, its just that if you are aralditing the tank (if you cant find any i have a tube or seven left, can come round and do ti for you) it may leak again for whatever reason (bodgy fix, cracks with vibration, who knows?) and atleast with the pod you wouldn't have to worry about a crank case full of petrol again.

Buy the carb, its a single cylinder four stroke. It's really not that hard to tune it to work properly, and you certainly aren't the first person putting a bigger carb on an FXR. There will be a few people who can give you tips and tricks as to how to make it run sweet.

Buy the carb, change some jets, put the accelerator pump on the "sweet fuck all" setting and off you go!

[xwhatsit]

How much of an issue is a pod filter when riding in rain? Is it really that bad? This being a faired bike.

[motorbyclist]

puddles? the fairings aren't that great, but it's still not to bad.

i could fashion a weather sheild for it...

[EJK]

Where can I get the filter? Since I don't have the bike in line-of-sight, whats the measuremant that can fit on to the FXR?

[motorbyclist]

depends on the carby

[EJK]

thats right....

[xwhatsit]

I'm pretty sure the outside of the filter-side is 47mm or near enough. Will get a proper measurement.

Will it not fit the airbox and stock filter, though?

[EJK]

It can. Plus the foam costs around $40 too.

But if the tank leaks again, the "box" will catch the petrol again(?)