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February 16th, 2014, 12:02 PM   #11
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Re: Sem to kokosan rebuild possible?

Hi

Doable but not easy

Don't know where the strip metal of the berg flywheel is, but probably to do it correctly when you use it for the 03 engine you will ruin it for the 06 one, because you probably will need to change the place of it.

The main thing is that you understand completely how the system work.

For this project has been a stand by one for 2 years

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February 17th, 2014, 08:13 AM   #12
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Re: Sem to kokosan rebuild possible?

but everyone Italk to agrees that the SEM could just stop working at any time
seems like a lot of work for something you just don't trust. i've been using "Sparks" rewound stators in my sem bergs for the last five years or so with no trouble at all.
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February 17th, 2014, 11:55 AM   #13
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Re: Sv: Sem to kokosan rebuild possible?

Originally Posted by ned37
but everyone Italk to agrees that the SEM could just stop working at any time
seems like a lot of work for something you just don't trust. i've been using "Sparks" rewound stators in my sem bergs for the last five years or so with no trouble at all.
The trust thing is the second.
The first would be thatvI would like to switch engine without changing all electrics.
I know its not mutch electrics, but still.
Feels like the kokosan stuff have more spares and so on.
Will see if I get to it.
I have the 03 on the bench, so its quite easy to do a mockup.
And I have the kokosan running on 2 engines.
Promise to update if I get to it

Now I atleast know that it has been done before
Just haveto do a solution that works on both stock and modified.

Is the TDC mark on the same place on the Sem flywheel as the kokosan?
If I get a KTM stator, then Inhavo get a KTM flywheel aswell to match?
Looks like SEM flywheel on the pics, or does the KTM look the same?

// Andreas/P-son
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February 17th, 2014, 12:09 PM   #14
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Re: Sem to kokosan rebuild possible?

I think it is easier to just carry a spare sems in your kit. That's my plan. Found a used one, it will go out for rework and then ride as a passenger.
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February 21st, 2014, 08:03 AM   #15
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Re: Sem to kokosan rebuild possible?

To start with I have had the original SEM ignition since 2001 in my 550. No problem whatsoever for 13 years. Bulletproof.
As it is a dry ignition you need to open the ignition cover after a wet ride to let moisture dry and spray with wd 40 from time to time. Case closed.
So I have never understood this "reliability issue" with the stock SEM ignition, unless you never open the ignition cover to let water and dirt out.
Seems to be quite some work switching to a Kokusan.

What is the real benefit with the Kokusan ignition ? Someone ?

Best,
Heimir Bardason
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February 21st, 2014, 03:57 PM   #16
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Re: Sem to kokosan rebuild possible?

not sure there is an advantage ?

If I had an SEM im pretty sure I would be using it ..

I have 2 kokusan setups and 2 engines so for me I just have to make my spare kokusan ign fit in my 02 cases then I have 2 bikes

the kokusan has an input for the TPS = good if you run the FCR carb

and there are a few platforms of programmable ignitions to choose from that can plug straight in to the kokusan platform
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February 24th, 2014, 02:18 AM   #17
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Re: Sem to kokosan rebuild possible?

Originally Posted by HeimirBardason
To start with I have had the original SEM ignition since 2001 in my 550. No problem whatsoever for 13 years. Bulletproof.
As it is a dry ignition you need to open the ignition cover after a wet ride to let moisture dry and spray with wd 40 from time to time. Case closed.
So I have never understood this "reliability issue" with the stock SEM ignition, unless you never open the ignition cover to let water and dirt out.
Seems to be quite some work switching to a Kokusan.

What is the real benefit with the Kokusan ignition ? Someone ?

Best,
Heimir Bardason
Hi

You must be one exception, I've never eared of one SEM stator lasting that long, I mean if you used the bike all those years
I open and clean the stator every ride, and even doing that I've had problems. With the old MKI I've had new stators lasting just a couple of hours !!

The benefits of making that change are the obvious reliability issue, also the more advanced ignition specially if you are using the FCR carb with the TPS sensor, because your CDI will have another information input and it will change the advance accordingly to that.

All that said, it is a lot of work to change from one system to another (machining, testing, etc) , that is why my kokusan is still in the box and there is also the cost thing, if you try to buy one new system it will cost you a fortune !! so you will have to be lucky to find one used on. And it will have to be complete, even the regulator/rectifier, you can't change just a few parts, it's all different.

Hope this helps


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