Ducati Monster 600-620 with carbs and Ignitech - Tooth Count?

[tastybaklava]

Hi all,
Long time lurker, first time poster!
I've been working on a Monster 600 resto for about 8 months and a couple months ago, I discovered that the engine I had in it was shagged. Without being able to find another 600 engine for a sensible price and a 620 coming up *very* cheap, I'd read about other people swapping between FI and carb motors, so I ordered the Ignitech and got to work.

I've got the Ignitech wired in and firing sparks on each cylinder, but I just cannot for the life of me get this thing to run!

I've tried the following settings in the bike tab, to no avail:

Special Setting - Long Gap Between Lobes-more lobes (48-2)
48 lobes at rotor
Channel 1
Max Advance 20 start 23

Channel 2
Max Advance 38 start 41

And...

Channel 1
18 21

Channel 2
36 39

Can someone chime in and let me know if this is correct?

Once I have everything buttoned up and running, I'm going to do a guide of sorts, to help anyone else doing this conversion. I'd run into issues working out sensor wiring, so if I can give back to the community, that'd be a bonus.

[koko64]

Can you post a shot of your options ?

[Dirty Duc]

http://www.ducatimonsterforum.org/index.php?topic=74775.msg1376318#msg1376318

There was a map linked in this thread that should get you going.

[tastybaklava]

I tried that map, but it didn't seem to work.

The other thing I wanted to confirm was the 'Channels' in the Bike tab. Does Channel 1 correspond to the horizontal or vertical cylinder?

I've also noticed that tooth 38 has a dimple pressed into it, so I'm not sure if maybe that bears some significance.

I've had the stator cover off tonight, turning the crank and taking notes on teeth numbers and theorising possible tooth combos, but this has me stumped. 

[koko64]

Try auto select for channel and see what it settles on. The channel selection is for the communication band between Ignitech unit and laptop iirc. Am I confused between that and bike selection?

Also for bike selection consider how many flywheel or gear tooth trigger points there are and how many ignition pick up coils in the system in order to select from the drop down list. This motor have one externally mounted pick up on the case?  If we could see your screen we could help you make an educated guess. Can you post a pick of the drop down options coming up on your screen?
Sorry mate, I can't remember the last time I tuned an Ignitech and it was for example  a dual pick up single lobe carburettor bike.

[koko64]

Remember to click on programme after each selection to make it stick or your selection won't be saved.

[koko64]

Speeddog. Would you consider the 620 to be a single pick twin lobe or single pick up single lobe system? How would you describe it?

[Speeddog]

I'd consider it a single pick single lobe

Speeddog. Would you consider the 620 to be a single pick twin lobe or single pick up single lobe system? How would you describe it?

[pepeducat]

so puts this curve

https://www.dropbox.com/s/0wgf9obllibac61/M900_Palero.zip?dl=0

depending on the version of your case it will change by opening the file with Note pad

[koko64]

I'd consider it a single pick single lobe

[Speeddog]

I'd consider it a single pick single lobe

That and a couple bucks could get you a cup of coffee.

[tastybaklava]

Thanks a million, all! I'm heading home from work now, so I'll try this all out.

[tastybaklava]

so puts this curve

https://www.dropbox.com/s/0wgf9obllibac61/M900_Palero.zip?dl=0

depending on the version of your case it will change by opening the file with Note pad

Hi Pepe

This is the map I downloaded from the other thread, but it seems to differ significantly from yours.  It looks like the same link, though?

[tastybaklava]

I'm wondering if this is potentially a wiring issue, even.

I have two of the pins of the cam sensor wired to earth and the other to Pickup 2 (I believe one of them is normally a shield on the stock 620?). I did try with Pickup 1 and hadn't had any luck. I'd then seen a couple of other guys on the net had been utilising pickup 2 and assumed there must be a reason. Yes, I definitely ticked the Pickup Interchange to swap it when I changed pins.

It's definitely getting a signal and I can see spark firing from each plug when they're removed but this thing just does NOT want to start!  The absurd advance readings give some indication that there's a setting that's not quite right or the signal being sent to the Ignitech is weak/corrupted/going the wrong way.

[koko64]

The base advance and max advance numbers do look whacky from a carburettored bike guy's perspective. Carbed 900/750 bike oem base advance in comparison is 6 deg and max 36 (less max advance depending on compression). This carbed bike info may be irrelevant however.
The base line Ignitech maps for carbed bikes appear to be 6-35 deg. I read on bikeboy.org that the higher comp 600's had 32 deg max advance.