O2 Sensor Installed
 

I ran by the muffler shop on the way to work this morning and true to their word, they worked me right in and did the work while I waited. Basically they just drilled the hole, welded on the sensor adapter, and smoothed it out a little. I haven't hooked up anything fancier than a voltmeter as of yet, and even that was just in my garage - I haven't ridden with it and from what I understand you really need to put the normal load on the engine to get a true mixture reading, just revving in the garage doesn't work, except for the idle circuit of course, but then it's just idling, not revving.

Anyway, here's what it looks like. I had him angle it slightly inward toward the engine. I happy with it - it doesn't interfere with riding with it installed and there's no leg interference or anything like that. I had them install it in the header, although I would have preferred the mid-pipe since I figure that would be easier to replace if for some reason I want it out in the future. But there didn't appear to be a good spot on the mid-pipe without interfering with the airbox above or the swingarm below. The header looks like the best place, and is actually where the sensor will be the most accurate anyway. And besides, the guy at the shop said that if I ever wanted the adapter removed, He could cut it off and patch the hole with no problem.

Here it is:

http://nobrakes.smugmug.com/photos/113287814-L.jpg

http://nobrakes.smugmug.com/photos/113287963-L.jpg

So far, the sensor says I'm still pretty rich - all readings above 0.9 volts. At 0.5 volts indicates stoichiometric which means all the oxygen was consumed as well as all the fuel. But oddly, that's not what the experts say is the perfect mixture, they say you want to be a little rich, so good readings with this sensor should be between 0.5 and 0.9, tending toward 0.9 but not above. While I don't doubt that I'm still a bit rich, I'll hold off full judgement until I can get a chance to take readings while the engine is under load, i.e., actual riding instead of revving in the garage.

RE: O2 Sensor Installed
 

cool, is that another pipe. or the one you got with your system, i know you were thinking of getting another head pipe. All you need now is the guage hooked up.... thats cool, too bad it wont help any of us out, because we dont have the pumper carb...

RE: O2 Sensor Installed
 

That's just the Muzzy header - I wasn't looking for another header, maybe you might be thinking of someone else, there's a lot of us to keep straight. ;) Most turn a nice warm bronze color, but mine is darker due to the header wrap I had installed. But you guys know I don't lose any sleep over that. :D

RE: O2 Sensor Installed
 

I hope they used some SS 309 wire. Looks like a mild steel fitting mig welded with ????

RE: O2 Sensor Installed
 

Cool, always the inovator. Let us know if this works for you.. Me personaly I like the look of weld puddles when they are nice and even , they ground out the beauty!! That is my humble opinion.

Maybe if you got your dremel and evened it out then, a masterpiece

RE: O2 Sensor Installed
 

Nobrakes,

I'm very interested in hearing how the bike runs under a load.

Remember, you need to be just a tad rich for most power!

Here's a great chart . . .


http://www.mummbrothers.com/SRF_Stuff/images/Stoich.gif

RE: O2 Sensor Installed
 

I don't know what he used, but I told him the pipe was stainless and he said OK.

Regarding the weld, I'll grind it a bit better the next time I have the header off. He did the whole thing with the still installed, so he couldn't read the back side with the grinder. He did ask first if I wanted them ground, and I told him to go ahead, so I could've had it either way.

Of course, once it was all done and I was about ready to drive off, he says, "You know, I could've done a lot better job if you removed the header first." ??? I said, well, that would have taken like 5 minutes so he should have said something before just doing it. I thought he might have wanted the header installed in order to get the alignment of the sensor relative to the engine right so that's why I drove the bike down instead of just bringing the header. I wanted it pretty much straight up maybe leaning slightly inward toward the engine. No matter - it's still a decent job, and the alignment is just right, IMO. It's better than I was expecting so I have no complaints and cost me just a few bucks.

RE: O2 Sensor Installed
 

I am interested in welding and have been at it a while. I hang out on welding sites and pick the brains of good welders.
I not at this level (because very few people are) but I like the right process and filler metal for anything I do.
There are a few guys I deal with in Oregon, that do this kind of work too.


http://mywebpages.comcast.net/engloi.../workpics.html

RE: O2 Sensor Installed
 

That's some great looking welding work right there, Scott V. Yeah, I don't think my guy can campare to that. I doubt I could afford your guy. ;) Some of that stuff is a work of art and I'm sure that kind of talent doesn't come cheap.

RE: O2 Sensor Installed
 

All kidding aside its outta harms way. I did not read the whole other thread.. what did you finnaly decide to use to read the 02 output?
In dash monitor ( led's) or just a voltmeter?