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Old 04-14-2013, 06:21 PM   #556
Bob Tosi
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Location: Chico, Ca
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Out fricken standing!
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When you're lost in the wild and scared as a child. And death looks you bang in the eye, and your sore as a boil, its according to Hoyle to cock your revolver... and die. But the code of a man says "fight all you can" and self-dissolution is barred. In hunger and woe, its easy to blow... Its the hell-served-for-breakfast thats hard........Robert Service
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Old 05-21-2013, 09:37 AM   #557
katone
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Location: San Diego
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just picked up a 94 605 and can not get it to run properly. Went through the carb twice, checked timing, adjusted valves to .004, changed oil, new battery, cleaned sparkplug.
It starts but can not idle no matter how i screw around with the idle/mix screws on the dellorto 40. I'm able to take it out for a spin but the engine lacks power.

yesterday I checked the ignition system and found 1.4 Ω for primary and 18.4 kΩ for secondary. the 97 manual (only one I could find unfortunately, i hope the values are the same for 94) says 0.8 for primary and 8-16 for secondary. you guys think this could be it? I don't know where to source an ignition coil but been emailing Keith as well so maybe he can help with that.
anything else I should check also?

I can not wait to get this baby back on the dirt!

thanks


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Old 05-21-2013, 10:23 AM   #558
beek-02
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I had an it175 once that the stator came lose and actually wore through some of the windings. It would still run but like crap and wouldn't idle. I think you could be onto something. There are a number of places that will rewind coils as well. Not sure how much it would cost but design principles on a coil are pretty much the same across the board.

GL
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Old 05-21-2013, 12:18 PM   #559
Bob Tosi
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Location: Chico, Ca
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[QUOTE=katone;21457400]just picked up a 94 605 and can not get it to run properly. Went through the carb twice, checked timing, adjusted valves to .004, changed oil, new battery, cleaned sparkplug.
It starts but can not idle no matter how i screw around with the idle/mix screws on the dellorto 40. I'm able to take it out for a spin but the engine lacks power.

yesterday I checked the ignition system and found 1.4
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When you're lost in the wild and scared as a child. And death looks you bang in the eye, and your sore as a boil, its according to Hoyle to cock your revolver... and die. But the code of a man says "fight all you can" and self-dissolution is barred. In hunger and woe, its easy to blow... Its the hell-served-for-breakfast thats hard........Robert Service
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Old 05-22-2013, 05:36 AM   #560
Bob Tosi
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Mine runs like a raped ape but I have to have the idle screw turned I a bit to get it to idle even after a good warm up. It's a kinda fast idle and somewhat loud. It's a little annoying but I put up with it. If I don't have it up I have to rev the throttle at a stop lite constantly and that's even more annoying.

I've had good luck contacting Keith"americandirtbike.com so far.
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When you're lost in the wild and scared as a child. And death looks you bang in the eye, and your sore as a boil, its according to Hoyle to cock your revolver... and die. But the code of a man says "fight all you can" and self-dissolution is barred. In hunger and woe, its easy to blow... Its the hell-served-for-breakfast thats hard........Robert Service
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Old 05-22-2013, 09:53 AM   #561
Rot Box
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So most of the 94's came with the goofy chain guide design (shown in my pic) which was also common on some European bikes back in the day. The idea is they are supposed to stay put unless the are hit with a rock or something in which case they will take the impact and then spring back into place. That said the rubberized bushing in mine tore so the whole thing would swing back and forth in the wind.

I talked to Lee today and it turns out they had a couple of those bushings in stock for about $7 Anyway I figured I'd share in case anyone has a torn one like me. This is on 'most' 94 models.

Did I mention how nice it is having people like Lee and Keith around?!

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Old 05-22-2013, 10:05 AM   #562
beek-02
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Have you tried a different idle jet. You can check the plug color to see what direction to go. It should be clean and tan and checked after the bike is at operating temperature for the most accurate reading. If the idle is set high via the slide it is more than likely starting to pull fuel out of the main jet being controlled by the needle jet to compensate for a lack of fuel through the idle circuit. Your idle circuit adjustment on the side of the carb is for minor adjustment and if idle jet is dirty or the wrong size completely it will not compensate. Jetting also varies with air density effected mostly by temperature and elevation. Air quality will also effect jetting but not really an issue unless you live somewhere like LA or anywhere within a 100 miles. Jetting is like a fine art and usually not as large of a concern for four strokes. Due to the design of the del orto carb (not that it is bad) I could see where jetting would be more important to be correct.

Beek

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Old 05-22-2013, 01:34 PM   #563
Cafe Racer
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Location: San Francisco, Ca USA
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I'm quite fortunate as I got my beat up garage find ATK to haul ass again. I just did the SheetIron Enduro this weekend and it ran flawlessly. Although at mile 200 my carb started spitting fuel profusely and making starting slightly difficult.

Once at home in San Francisco I can't get it to idle. Checked the air filter and pulled back the foam screen and idle seems to be back.

On the way home I stopped at MotoExotica in Vacaville and bought the old gal a set of fork seals, new chain and sprockets. Otherwise, this bike is a beast.

Miguel
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Old 05-26-2013, 08:17 PM   #564
Bob Tosi
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Quote:
Originally Posted by Rot Box View Post
So most of the 94's came with the goofy chain guide design (shown in my pic) which was also common on some European bikes back in the day. The idea is they are supposed to stay put unless the are hit with a rock or something in which case they will take the impact and then spring back into place. That said the rubberized bushing in mine tore so the whole thing would swing back and forth in the wind.

I talked to Lee today and it turns out they had a couple of those bushings in stock for about $7 Anyway I figured I'd share in case anyone has a torn one like me. This is on 'most' 94 models.

Did I mention how nice it is having people like Lee and Keith around?!

What is that tank on this bike? It doesn't look stock and it looks bigger than normal?
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When you're lost in the wild and scared as a child. And death looks you bang in the eye, and your sore as a boil, its according to Hoyle to cock your revolver... and die. But the code of a man says "fight all you can" and self-dissolution is barred. In hunger and woe, its easy to blow... Its the hell-served-for-breakfast thats hard........Robert Service
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Old 05-26-2013, 08:57 PM   #565
katone
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Quote:
Originally Posted by katone View Post
just picked up a 94 605 and can not get it to run properly. Went through the carb twice, checked timing, adjusted valves to .004, changed oil, new battery, cleaned sparkplug.
It starts but can not idle no matter how i screw around with the idle/mix screws on the dellorto 40. I'm able to take it out for a spin but the engine lacks power.

yesterday I checked the ignition system and found 1.4 Ω for primary and 18.4 kΩ for secondary. the 97 manual (only one I could find unfortunately, i hope the values are the same for 94) says 0.8 for primary and 8-16 for secondary. you guys think this could be it? I don't know where to source an ignition coil but been emailing Keith as well so maybe he can help with that.
following up on my post.

waiting on the new coil to arrive I tried a different carb and got same results: surge at idle then eventually rpm drop and die.
checked compression (using estart): 65psi. no bueno. what can cause such a low compression.
Since today was sunday i just tore it apart:
to my surprise valves weren't leaking. All i could find so far was a possible leakage in between head and block, engine might have overheated (remember here it is supposed to be smooth):



so I 400 gritted it a bit..



much smoother



I also lapped valves.

One thing maybe someone could help me with here:
The camshaft on my newly purchased bike says "up-tite" (hand written and barely visible) and the number "4", does anyone know anything about this cam and how it compares to stock?
also whoever made this cam put the top dead center mark on a tooth.. aligning a tooth with a tooth, really?




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Old 05-27-2013, 08:32 AM   #566
Rot Box
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Originally Posted by Bob Tosi View Post
What is that tank on this bike? It doesn't look stock and it looks bigger than normal?
Its just the stock 94-95 (-97 air cooled 2T) tank. I need to fill it up from empty to see how much it holds. I know its at least 3 gallons maybe 4
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Old 05-27-2013, 09:05 AM   #567
katone
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update: I might have found what cause the low compression..

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Old 06-16-2013, 03:15 PM   #568
Avboden
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Hi all,

1999 605 ESDS here. Had it for a few years. Just recently had the engine rebuilt by keith all stemming from a bad sprag gear and spitting a lot of oil out of the crankcase breather. I've got a full set of supermoto wheels/tires for it that it's on most of the time.

When I first got it it had straight up street/race tires on it, sure was fun on the dirt with those!






teardown






engine rebuild



and as she sits now on some brand new distanzias.





Sadly I'll likely be parting with her this summer. I live in Wa but currently i'm in veterinary school on the island of Grenada so I'm not here riding much minus summer. I'd use the money from the sale to buy a bike on the island. It's going to be really hard to part with her though :-(
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Old 07-13-2013, 06:33 AM   #569
bluedxj
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anyone know how the sprocket on the engine comes off? its a 90 406 thanks.
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Old 07-25-2013, 11:42 AM   #570
Rot Box
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Info on the future of Talon sprockets for our bikes: http://atkmotorsports.com/atkbb/viewtopic.php?t=3162

I talked to Keith and it sounds like the Talons are no longer an off the shelf item. They should still be available through special order though but that will likely add to the cost.

Aside from that I think Keith still has the OEM Rotax fronts available. Sprocket Specialists should be avoided on the front unless you like stripped countershaft splines. As the manual states don't forget the loctite on the splines!

Several options for the 84-93 California/KTM rears. The sky is the limit for the 96-03 ATK/Suzuki rears. The 94-95 hubs have only one option and that is the Talon.
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