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Dyna 2000 computer install

Started by laseron, November 27, 2017, 06:19:31 PM

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Pat Conlon

Be careful letting that big air cooled lump idle too long....you *will cook* an exhaust valve (or two)... then you *will* have problems.
2 Box fans will help move air across your cooling fins.

Report back on the replacement fuel pump. Again, it sure sounds to me like your engine is starving for fuel.
When it starts sputtering, open the throttle, if it momentarily recovers....its the fuel.
The lowering fuel level in the float bowls starve the pilots first, sputter starts. Opening the throttle puts you on the main jets which are located lower in the float bowl, the engine recovers until the fuel level drops below the inlet level of the main jets, then the engine stalls.

Cheers

Pat
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

fj1289

Quote from: laseron on November 30, 2017, 06:30:09 PM
I tested the Dyna Coils I installed several years ago, and each measures 6.6 ohms,. They're supposed to be 3 ohms. Is this enough of a difference to matter?

There are several different models of dyna coils - each color coil is a different resistance.  The hottest coils they make are suitable only for racing — street riding will overheat the coils and damage them   

Pat Conlon

The Dyna grey colored coils are 2.2 ohms and good only with the Dyna 2000 ignition and not the oem FJ ignition.

The Dyna green coils are 3.0 ohm and are good with the oem FJ ignition....and will work with the Dyna ignition, although the lower 2.2 ohm Dyna grey coils are better with the Dyna ignition.
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

yambutt

Pat I have the grey 2.2 ohm on the relay with stock ignition and it's been working great going on 3 yrs... When I installed them it seemed I had a little better throttle response but it could've been my imagination, they are also still working fine with the new 1350 engine...  Also I did a 450 mile ride the other day running through the gears pretty good every now n then and I burned exactly1 ounce of oil, I have about 900 miles on the engine, that was using 15w40 reg oil but about to switch to the 20w50 shaeffer oil

yambutt

Oh....I forgot, you think I should switch back to my stock coils, it would be very easy for me to do?

Pat Conlon

Yes, I think you should go back to your stock coils, (until you get the Dyna greens)
The Dyna grey 2.2ohm coils are too low of a resistance for the stock FJ igniter box.
You run the risk of cooking the ignition box.

It's been awhile, going by memory, IIRC the GYFSM specifies the coil ohm range of the FJ ignition to be between 2.6 ohms and 3.2 ohms. You want an aftermarket coil within that range.
That's why the 3 ohm Dyna greens were made, for street bikes running the stock ignition.

That said, the best bang for the buck is the coil relay. It's amazing how they wake up when supplied with the voltages fed off the battery. My oem wiring harness was only supplying ~10.8 volts to my coils.
Now those puppies are getting at least 12.8 to a running voltage of 14.4 volts

Cheers
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

yambutt

I remember talking to the guys at dyna and they asked me to measure the ohms on my stock coils and I thought they were about 2.2 ohms also so that's why we went with the grays....I have a 92 fj so would that make any difference. I'm going to ohm my stock coils in the morning and see what they read.....thanks

JMR

Quote from: Pat Conlon on December 08, 2017, 01:58:16 AM

That said, the best bang for the buck is the coil relay. It's amazing how they wake up when supplied with the voltages fed off the battery. My oem wiring harness was only supplying ~10.8 volts to my coils.
Now those puppies are getting at least 12.8 to a running voltage of 14.4 volts

Cheers
That is gospel Pat.  :good2:

FJ_Hooligan

Doing a little math;  I = V/R

If you get the full 12 volts to the coils with a stock coil resistance of 3 ohms, you're pulling 4 amps through the coil.

Assuming 4 amps is an okay current flow then installing a coil with 2.2 ohms resistance means you shouldn't allow more than 8.8 volts of coil power.

Assuming you have a typical voltage drop of about 10.5 volts at the coil, you're getting a current flow of 4.8 amps.  ~20% over stock current.

Maybe not enough to overheat anything (since you're still running) but you would NOT want to do the relay mod with the grey coils and stock ignition box.

With 12 volts at the coil and 2.2 ohms resistance, that would send your current draw up to ~5.5 amps or ~36% over stock.
DavidR.

yambutt

Hey pat I just ohm my stock coils and I'm getting 2ohm on both coils on 1 meter and 2.1 ohms on another meter, 1 meter is brand new

yambutt

Have the relay on the grey dyna coils for 3 yrs and nothing burned yet....but like I said my stock coils read 2.0 ohms on both of them so am I missing something here

FJ_Hooligan

DavidR.

yambutt

I went on yamahas parts list and this is what I found
From 1984 to 87 coil factory number from yamaha was 1AA-82310-09-00 BUT WHEN THEY CAME OUT WITH THE FJ IN 1989 AFTER SKIPPING 88 THE COIL FACTORY NUMBERS ARE 1WG-82310-09-00 AND ARE MORE EXPENSIVE......so they seem to be different coils

Pat Conlon

Quote from: yambutt on December 08, 2017, 01:57:06 PM
I went on yamahas parts list and this is what I found
From 1984 to 87 coil factory number from yamaha was 1AA-82310-09-00 BUT WHEN THEY CAME OUT WITH THE FJ IN 1989 AFTER SKIPPING 88 THE COIL FACTORY NUMBERS ARE 1WG-82310-09-00 AND ARE MORE EXPENSIVE......so they seem to be different coils

Nope, just the connectors are different.


Re coil test: Are the coils warm? Heat them up. They live in a hot environment under your tank. Warm coils have a higher resistance.
A quick check on my Clymer (not the GYFSM) shows the same values on the TCI/DCI coils to be primary: 2.4 to 3.0 ohms, secondary: 9.6k-14.4k ohms.

However, with all the mistakes in this Clymer, I trust it about as far as I can throw it (and I've thrown it a lot)
The Genuine Yamaha Factory Service Manual (GYFSM) is proper source. I really need to get one.

I don't know what to tell you.... 3 years is a long time on the Grey's. If headaches were to happen, it would have happened by now (maybe)

Here's what Dyna has to say about the 2.2 ohm grey's:
OEM:  Check the resistance of the coils you are replacing to ensure a correct match. These coils work to replace some CDI or electronic ignition system coils where the resistance is in the low to mid 2 ohm range. If you have questions if these are correct- please call Dynatek at 1-800-928-3962 Never select a coil with a lower resistance than your ignition system - this will cause the coils to overheat and burn out... It is OK to select coils with a slightly higher resistance. For example 3.0 ohm coils with a 1.5 ohm CDI ignition. While this isn't optimal- it works and allows you to switch your CDI ignition over to a Dyna-S in the future.
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

yambutt

Here's what dyna just sent me seconds ago
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
Quote from: yambutt on December 08, 2017, 01:57:06 PM
I went on yamahas parts list and this is what I found
From 1984 to 87 coil factory number from yamaha was 1AA-82310-09-00 BUT WHEN THEY CAME OUT WITH THE FJ IN 1989 AFTER SKIPPING 88 THE COIL FACTORY NUMBERS ARE 1WG-82310-09-00 AND ARE MORE EXPENSIVE......so they seem to be different coils