The Golden Triangle Rider

siinthai · Posted: 18.09.2008, 11:34 Post subject: To Carb or not to Carb...?

Ok lads , I need some help from the techies amongst us.
Have a 2006/7 XR400, elec start.
went out and bought a mikuni pumper carb to help her kick HH's 650.
Now have a look at photo's below and help me out please.

Notice the 2 wires coming out of the lefthand side bottom ? ok none of these on pumper. Also there appears to be a throttle position sensor on the butterfly valve, wires not in shot. SE of choke lever.

now beside each other...I'm beside myself !

Can i just hook the pumper in and leave the wiring disconnected ?
Any help here ?
_________________
www.haralleycharters.com

Hua Hin · Pedestrian Joined: 13 Aug 2007 Posts: 7

I just picked up a 2006 model. It's not exactly the same as the XR400R.

I plan on doing the same mod.

These guys might be able to help.

http://www.xrsonly.com/content/index.php?page=shop.product_details&flypage=shop.flypage&product_id=225&category_id=22&manufacturer_id=0&option=com_virtuemart&Itemid=77&vmcchk=1&Itemid=77

Dwayne.

Happy Feet · Posted: 18.09.2008, 20:11 Post subject:

Can i just hook the pumper in and leave the wiring disconnected ?

if the carburetor you are using is recommended for your model of bike, just tape up the wiring and ignore it.
_________________
www.transmotosport.com
Adventure Riding Tours

siinthai · Posted: 18.09.2008, 21:48 Post subject: Re: Carbs

KZ · Posted: 19.09.2008, 10:48 Post subject:

Can somebody explain what an electric cable is doing on a carb? Is it connected to a sensor? What might that be sensing, then?
_________________
Too much of a good thing is not a good thing.

siinthai · Posted: 19.09.2008, 11:00 Post subject:

pikey · Posted: 19.09.2008, 12:34 Post subject:

Si,

Don't worry about it mate - just some emissions bollocks. Like B&T says, the carb is spec'd for your bike so just tape it up from the loom end and be done with it.

I don't have my std carb at the house but can check that when I am next in CNX to see what wires were hanging off - I remember that it had a TPS but I just taped that up. Remember, a carb has a purely mechanical function so any electrickery is additional shite you can do without. Lob it on and let her rip!!! Very Happy

Cheers,

Pikey.
_________________
"Belligerent, honest, sarcastic and rides like an arse? Hmmm, that'll be me then! Very Happy

"

Visit http://www.thehungersite.com today!

KZ · Posted: 19.09.2008, 14:44 Post subject:

Exacrly, a carb has a purely mechanical function. How can you check emissions at ot in the carb? Or is that part of an emission system?
I remember yanking off all kinds of hoses and even a small pump off my CA version XR650L and plugging a hole under the exhaust header, it ran better right away. But a cable off a carb?!
_________________
Too much of a good thing is not a good thing.

largo · Posted: 19.09.2008, 15:17 Post subject:

It looks like a heater plug to me, only neccesary in cold damp climes. That`ll be the UK then
Cheers

Hua Hin · Pedestrian Joined: 13 Aug 2007 Posts: 7

The XRonly website says they include an adapter plate to fit the carb to the XR400 engine. Maybe they forgot to ship it with the carb?

pitstop · Motorcyclist Joined: 01 Jul 2008 Posts: 36

I have not heard anyone talk about jetting your carb yet, XR only is is a SO Cal Company and carb is most likely jetted for Southern California.
Best you get a few jets/needles to play with.