Dyna 2000 computer install

[yambutt]

My 1992 stock coil readings actually are 1.8 ohms

[yambutt]

Hello Thomas.
The Yamaha FJ models did change (stock) ignitions and subsequent coil primary
ohm ratings over the years, so it is critical the model year be verified.
The 1989 and 1990 1200 engines used a coil having a 2.4 to 3.0 ohm primary ohm
rating, so the 2.2 ohm coils should never be used with a stock ignition.
However, on the 1991 to 1993 1200 engines, this changed to a 1.8 to 2.2 ohm
rating. So, your 1992 model is perfectly safe using the DC4-1 coil set, rated
at 2.2 ohms if you have the stock or Dyna 2000 ignition system.
Thank you,
Larry Nelson
Technical Support
Dynatek
1-800-928-DYNA (3962)
http://www.dynaonline.com

[Pat Conlon]

Thanks Thomas, good to know!

I wonder what the '91-93 coil test values are as listed in GYFSM? Can anyone look it up for me?

I trust the Dyna folks over that Clymer....yet another reason to throw it away....

Good stuff Thomas, thanks for setting me straight.

[yambutt]

Pat the more I thought about it the more I remembered that the 2.2 ohm dyna was ok on my 92 so when I measured 1.8 ohms and got that figure this morning from Larry at dyna it reassured me that I was ok, still may put my stock coils back in tho

[Pat Conlon]

Why?

[yambutt]

He also said this
Hello Thomas.
Truth be told, we have seen very random issues with the Dyna 2000 over the
past 25 years, but these issues amount to a total of less than 5 of every 100
units sold. Most only hear the negative stories, not the good, which far out
number them.
Many thousands of users, including myself, have had no issues at all over the
years on their bikes, but a few have. The Dyna 2000 modules have been updated
over the years where deemed needed to provide the best possible performance
and reliability, including their being PC programmable. This does not mean
that someone may not have an issue from time to time, but being a performance
product, things can happen from time to time, regardless of our best efforts.
Be this as it may, we can understand your concerns and perhaps someday you
will try the Dyna 2000 yourself.
Thank you,
Larry Nelson
Technical Support
Dynatek
1-800-928-DYNA (3962)
http://www.dynaonline.com

Pat the more I thought about it the more I remembered that the 2.2 ohm dyna was ok on my 92 so when I measured 1.8 ohms and got that figure this morning from Larry at dyna it reassured me that I was ok, still may put my stock coils back in tho

[yambutt]

The stock coils are hard wired although I'm pretty sure I soldiered the terminals to the screw terminals on the dynas but the plug wires I crimped on

[yambutt]

Soldiered the leads to the screw terminals on the dyna....I don't trust electrical screw terminals, better if you can soldier them

[Pat Conlon]

5% failure rate is high. If a manufacturer says 5% I wonder if it's really 10%?

I wonder if the FJ's notorious over charging issues (e.g.15+ volts)  are partly to blame?

Regardless, I do not want to be one of the unlucky 5% in the middle of BFE when the Dyna ignition quits.

In my experience, in an environment of vibration, a 'quality' crimped connection is superior over a soldered connection.

[yambutt]

Yea 5% = 10%    Soldier in my business is so much more reliable than any crimp if it's not cold soldiered and also in the high-end audiophile world crimping is a definite NO NO

[TexasDave]

Yamaha 93 service manual lists 1.8 to 2.2 ohms as primary winding resistance.  Secondary winding is 9.6 to 14.4  ohms.

Dave

[yambutt]

But saying all that with vibrations included in the mix I would say a good crimping job is better than soldier due to the flexibility a crimp has over soldier

[yambutt]

My leads on my dyna coils if I remember correctly are screwed down then soldiered to the screw plate

[Pat Conlon]

Yamaha 93 service manual lists 1.8 to 2.2 ohms as primary winding resistance.  Secondary winding is 9.6 to 14.4  ohms.

Dave

Thanks Dave!

That does it....I'm throwing that fucker away....

[yambutt]

Wonder what else is wrong in those manuels