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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
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  #1  
Old 26 Jan 2011
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Mezo`s 3AJ Tenere Build

Thought id share my build of the 3AJ on here, seems only fair as i got plenty of technical tips from this forum after trawling through very very old posts.

Here are some before & after shots.



Click here for a YouTube slideshow of the build.




Mezo.
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Last edited by Mezo; 8 Apr 2011 at 01:43.
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  #2  
Old 26 Jan 2011
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Very, very nice.Well done you. Followed the rebuild on Advrider. Hilarious.

Cheers,

Dickyb
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  #3  
Old 26 Jan 2011
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Followed on adv aswell.

Really beautifull build, hope it rides as god as it looks
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  #4  
Old 26 Jan 2011
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Hi Mezo

unfortunately I don`t have your skills .... this is the best 3AJ I have seen

Maybe you should send the pics and report from advrider to the manufactures, they may consider building a real overlander/adventure bike again ....

.... sorry just dreaming


Thomas
(who took a 3 AJ to Algeria in 2003, 8000km Sahara riding and no issues)
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  #5  
Old 26 Jan 2011
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Quote:
Originally Posted by Dicky View Post
Followed the rebuild on Advrider. Hilarious.
Yes it was a bit of a laugh, sadly not all people get jokes though.

Quote:
Originally Posted by Jens Eskildsen View Post
Followed on adv aswell.

Really beautifull build, hope it rides as god as it looks
Early days yet Jens, i think im going to have problems with the airbox snorkel missing? but that`s how i got the bike (missing snorkel) once ive done a few K`s ill be able to open it up a bit, i did feel a bit of a splutter when i tried the first ride.

Quote:
Originally Posted by Tom-Traveller View Post
Hi Mezo

unfortunately I don`t have your skills .... this is the best 3AJ I have seen

Maybe you should send the pics and report from advrider to the manufactures, they may consider building a real overlander/adventure bike again ....

.... sorry just dreaming


Thomas
(who took a 3 AJ to Algeria in 2003, 8000km Sahara riding and no issues)
They are pretty tough old bikes, it does have a bit of a whine in the box (same through all the gears) is that normal?

Ive only done about 15K`s so far of pretty gentle riding, ive also found the brakes are pretty crap as well? last bike i rode was my old Ducati & them lovely big old twin Brembo`s.

Mezo.
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  #6  
Old 26 Jan 2011
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Good to see you got it back on the road Mezo.
The Tenere rebuild thread you put up was one of the best threads in the thumper forum
Mark
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  #7  
Old 27 Jan 2011
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Cheers Mark,

One thing ive noticed with this new exhaust is how far away you can feel the pressure pulses coming out.

I was stood 30ft away with the bike just ticking over warming up, my back was turned away & i felt what i thought was the dogs tail wagging on my T-shirt?
I soon realized it was the pressure wave coming out of the exhaust traveling across the yard blowing on my back.

You guys wont believe it till you see it, ill make a movie of it & post the link. I just hope ive not gone overboard with the "flow" as many of you know back pressure is a good thing for an engines performance.

Mezo.
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  #8  
Old 28 Jan 2011
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There`s a bit of a splutter happening? here are a couple of movies i just took, it smells pretty rich as well.

YouTube - XT600Z 3AJ Tenere splutter 2

YouTube - XT600Z Tenere 3AJ spluttering 1

There was a small splutter on the first test ride but it seems to have got worse? the only difference is that ive topped her up with oil.

And yes im thrashing a new engine for a reason.

Mezo.
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  #9  
Old 29 Jan 2011
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Hi Mark,
that bike looks really sweet. Is the spluttering just a matter of jetting it right?

Very best regards, Dave
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  #10  
Old 29 Jan 2011
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Quote:
Originally Posted by dblunn View Post
Hi Mark,
that bike looks really sweet. Is the spluttering just a matter of jetting it right?

Very best regards, Dave
Hey Davey mate,

Didn't know you was on here as well, im getting Danny to bring his coil round later to rule that out & then if thats not the problem ill pull the carbie out in the morning, its coughing & spluttering & fouling the plug, then when you try to open it up full its well sluggish (cant even pull a wheelie) think it may be something to do with the diaphragm? also there is a loose pipe comming off the fuel pump & i have no idea where it goes, very skinny pipe not much bigger than a strand of spaghetti.

Mezo.
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  #11  
Old 30 Jan 2011
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Quote:
Originally Posted by Mezo View Post
Hey Davey mate,

Didn't know you was on here as well, im getting Danny to bring his coil round later to rule that out & then if thats not the problem ill pull the carbie out in the morning, its coughing & spluttering & fouling the plug, then when you try to open it up full its well sluggish (cant even pull a wheelie) think it may be something to do with the diaphragm? also there is a loose pipe comming off the fuel pump & i have no idea where it goes, very skinny pipe not much bigger than a strand of spaghetti.

Mezo.
Yeh mate ya can run but can't hide!

That skinny pipe from the fuel pump is just the breather so should be left open.

The diaphram on the secondary carb can feel the effects of age, they only sell them as a set with the slide so will cost 70-80 ozi pesos.

Also check the secondary butterfly begins to open when the primary slide is 7mm open.

Also check the slop on the primary spindle, I had to make new bushes for mine as they don't sell carb bodies anymore. Although this would show up more as a lean problem not a rich problem like your seeing.

Good luck with her mate, she looks great.

All the best, Dave
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  #12  
Old 3 Feb 2011
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Thanks Dave im about to pull it out & have a nosey, been a bit sidetracked with other issues mainly a dog that likes chewing stuff.

See my new post.

Mezo.
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  #13  
Old 5 Feb 2011
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Ok just an update on the spluttering guys.

I pulled the carb out today & stripped it right down & checked everything, there was a bit of crap in there as to be expected.

Took it for a blat (yes im English) down the road & there's a vast improvement over how it was before, it was coughing at around 3000rpm before but now im getting much better results but its still spluttering at around 5000rpm.

I rang me mate Dave (dblunn/dirtwannabee) and asked him to clarify if indeed there is a 7mm gap on the primary slide before the butterfly opens on the secondary, he said "yep Mez" so i set it at that.

So like i said its a vast improvement but still not wheelie material (if you know what i mean) and it still smells rich.

Any thoughts lads?

Mezo.
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  #14  
Old 5 Feb 2011
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Not sure what's causing the mis-fire Mezo, what's the plug look like?
It sounds fuel or mixture related.
Choke not sticking? All I can think is to just make certain it's got the right jets in there & the float is set correct,it sounds rich from your description.If you've got that gauze filter fitted I 'd get shut plenty of reports of it clogging,run a in-line fuel filter on the fuel pipe instead.
What's the airfilter like? Is the airbox snorkel fitted correct?
If everything is as should be then maybe it's ignition related,coil,generator or C.D.I?
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  #15  
Old 5 Feb 2011
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Quote:
Originally Posted by MARK.F View Post
Not sure what's causing the mis-fire Mezo, what's the plug look like?
It sounds fuel or mixture related.
Choke not sticking? All I can think is to just make certain it's got the right jets in there & the float is set correct,it sounds rich from your description.If you've got that gauze filter fitted I 'd get shut plenty of reports of it clogging,run a in-line fuel filter on the fuel pipe instead.
What's the airfilter like? Is the airbox snorkel fitted correct?
If everything is as should be then maybe it's ignition related,coil,generator or C.D.I?
Hey Mark,

The plug soot`s up real quick so its defiantly running rich, i checked the choke to make sure that wasn't on & ill check that again. Don`t have any spare cash or spare jets right now so i just left it set as the previous owner had it set (including the airbox) the gauze i put on is Stainless so it wont rust like i read on here about that happening & blocking the airway. Ive even tried taping up 3/4 of the inlet to mimic the missing snorkel to see if that made a difference but just the same. The air filter is brand new from Dave Lambeth & all the pipes are fitted correctly with no air gaps including the inlet rubber stubs (o-rings fitted & no cracks). I turned the pilot screw (air/fuel) to two turns out as well & the clip on the needle is three out of five.

The spark was always very average (aussie slang for piss poor) and i wanted to try another coil in there just to rule that out, like i said this all costs mullah & mullah is in short supply right now.

Im going to send an email to the previous owner (Brian the Canadian) and ask him how it was running before it was disassembled for its rebuild, and if he says it was running fine it must be something ive done? remember i have ported the head & put the new exhaust on it which if anything should have leaned the engine off surely (and don't call me Shirly).

Mezo.
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