Ignition, jets and reliability etc?

[Guest]

Hello everyone!

Here some questions from the northern parts of Sweden. Lulea to be exact.
Do not know if this is the right thread, but I'll try here ... :-)

I just bought a GS1000G of 1982, I am presently to modify a bit. It will be a daily driver and a little holiday tours, with a touch of Brat Style, bobber, cafe racer mixture. It is quite standard in the engine, exhaust, air filter and so on. I am pleased with the effect and will not make any "adjustments" right now. May swell to see what happens over the years .... :-) It modifications to be made to the powertrain are those that affect the reliability and easiness to fix if something happens along the roadside.
My questions to you are;
1 ... Have just bought a Dyna S and Accel Super Coils. (Have not started yet) I read on some forums that many change jets when putting Accel Super Coils. What are your experiences?
2 ... Do you think you should change the air filters to reach other than STD? Which in this case?
That said, I'm not looking for power, but for simplicity and reliability.
3 ... What other modifications would you suggest to increase the reliability of such a cage Oldie Goodie?
Kindest regards and many thanks in advance, from Ulf, in Lulea, Sweden.

[tkent02]

For reliability, leave it as is, but maintain everything. Start with checking the valve clearances. Check the carb boots, new O rings, make sure the carburetors are up to speed. Work your way right on through to cleaning the connections in all if the wiring. Make sure you go through the brakes. Nothing needs to be modified, many of these bikes go for 100,000 miles and a lot more, few ever break down except the neglected ones.
A well maintained GS is as reliable as any vehicle made.

A ton of information is waiting for you here:

http://members.dslextreme.com/users/bikecliff/

[Ulf F]

Hello and thank you so much for your reply tKent02! Just what I wanted to read ... ;-) Have worked on building racing engines in RallyCross and Rally a long time ago, but have never had to rejet the carburetors caused by that we have switched to a better ignition system with better spark. Thought it sounded like a strange action. But would like to hear your GS knowledgeable opinions.
Will definitely work my back on the details you wrote about, one by one, for reliable convenience.

Thanks for the link ... very valuable (y)

[hjfisk]

Hello and thank you so much for your reply tKent02! Just what I wanted to read ... ;-) Have worked on building racing engines in RallyCross and Rally a long time ago, but have never had to rejet the carburetors caused by that we have switched to a better ignition system with better spark. Thought it sounded like a strange action. But would like to hear your GS knowledgeable opinions.
Will definitely work my back on the details you wrote about, one by one, for reliable convenience.

Thanks for the link ... very valuable (y)

If your stock ignition system is maintained there is no real advantage of the dyna system. A properly maintained one works great. The problem people have on these bikes is they forget the fact that they are all 30+ years old. And they either don't have the knowledge or will the go through and do proper maintenance , by cleaning up the connections. The wiring and everything starts to corrode and make for bad connections, especially if the bike was not stored under cover or ridden in wet weather alot . I won't say there is never a failure of the ignition system , but when there is it will generally stem to another underlying problem like a bad ground. I have had people laugh at me when I go over my electrical's on my bikes , where I will spend hours searching a specific circuit looking for a 1/4 of a volt. As far as jets go it depends on the modifications you do , but coils would not be one requiring a jet change.

[Ulf F]

Hello and thanks for your post hjfisk!

Now the whole system with Dyna S and Accel Super Coils is now mounted and adjusted. Have switched to a new stock air filter. It sits stock exhaust and stock jets. The only thing I needed to adjust the ignition timing and then give an extra 1/2 turn on the fuel / air screws. So, I have also increased the gap on the spark plugs to 0.85 millimeters. And I must say I got a brand new motorcycle. Easier to start and requires hardly any shoke. Runs like a dream and purrs like a cat on tomgång.Det modena ignition systems are more accurate and provide significantly better energy in the spark. So I am very pleased with the investment in the new ignition system. Recommend it fully to anyone. Absolutely, I agree with you that one must carefully go through the electrical system on the old machines that lived long in all kinds of weather. I am careful with that stuff. It's not a recommendatio, it is ordered to take care of the electrical system ....

Thank you again! / Ulf

[posplayr]

Glad things are working out for you, can you provide any more details on the ignition system you are using?

[Ulf F]

Hi Posplayr! Yes of course I will tell you what you need to know. My system is a Dyna S from Dynatek. Dynkatek have complete systems for different needs and requirements. It deletes the original CDI box and replace the original ignition flatten Dyna S. It comes with great instructions on what to do. But it is a fairly simple operation.

Depending on what your model year, and motorcycle, it's a little different modifications to the ignition timing. My GS1000G 1982 had the ignition timing in the CDI box. Then you are forced to put a mechanical ignition advance from an older Suzuki has it. How it is on other models I do not know. But it was a bolt on for me.

The choice of the ignition coils before on Accel, after I read a little different testimonials, I chose Accels Super Coil instead of Dynateks ignition coils. Just because Accel is considered more reliable. Even there it's a simple oparation. But it differs little between fixings and so on. Menmedföljande instructions are simple to understand.

Then there were those who claimed that they had put more size on the main jets. But I think my doing well and do not need bigger jets.

Still have questions? I reply what I can for my experiences...(y)

[Ulf F]

If you buy an entire kit from Dynatek, they will guide the what to wear. But because I chose Accel so it was important to ensure that it is correct ohms on the ignition coils. To my Dyna S should I have 3ohms coils.

[posplayr]

Hi Posplayr! Yes of course I will tell you what you need to know. My system is a Dyna S from Dynatek. Dynkatek have complete systems for different needs and requirements. It deletes the original CDI box and replace the original ignition flatten Dyna S. It comes with great instructions on what to do. But it is a fairly simple operation.

Depending on what your model year, and motorcycle, it's a little different modifications to the ignition timing. My GS1000G 1982 had the ignition timing in the CDI box. Then you are forced to put a mechanical ignition advance from an older Suzuki has it. How it is on other models I do not know. But it was a bolt on for me.

The choice of the ignition coils before on Accel, after I read a little different testimonials, I chose Accels Super Coil instead of Dynateks ignition coils. Just because Accel is considered more reliable. Even there it's a simple oparation. But it differs little between fixings and so on. Menmedföljande instructions are simple to understand.

Then there were those who claimed that they had put more size on the main jets. But I think my doing well and do not need bigger jets.

Still have questions? I reply what I can for my experiences...(y)

Runs like a dream and purrs like a cat on tomgång.Det modena ignition systems are more accurate and provide significantly better energy in the spark.

I thought perhaps you were using something different. You are just using a Dyna System? Yes The coils will produce a hotter spark, but not sure the Dyna S is helping that much.

[Ulf F]

Oh no, this is it .... :-) So simple and reliable as possible is my goal ... (y)

Helping in that I lose the old electromagnetic pickups and get a more modern ignition system with more precise ignition point thanks to the Hall sensor. Noting else. The Accel coils does the rest.

[OldVet66]

Yes you should have 3 ohm coils with the system you installed. It is a very simple and reliable system, and the hotter coils always make them run better, no jetting required. You should check your timing with a timing light to verify timing and advance. You will probably end up slipping the 2-3 module slightly on it's screws to get it exact, but it's real close from the factory. If there was a problem with the Suzuki ignition, you probably made a good choice but the Suzuki ignition was as good as what you replaced it with, just a lot more expensive to replace. Those of us who have had charging issues (that's a lot of us) are switching over to the series R/R for reliability. The old shunt R/R shorts through the stator when no charging is required, dogging the stator 24/7 where the series R/R turns on and off giving the stator rest periods between demand resulting in longer life and slightly cooler oil. There are two models currently popular, the Compu-Fire 40A three phase #55402 and the Sheindengen SH-775 35A three phase. The SH-775 can be ordered with a Polaris part number 4012941. In addition many are doing a relay modification to give the coils direct battery power instead of relying on the Suzuki circuit traveling through the kill switch where voltage drops can occur. The kill switch circuit operates the relay. Now for the icing on top of the cake, posplayr has designed a solid state power box that will protect the entire electrical system and eliminate the fuse box. Welcome to the forum!

[Ulf F]

Thanks OldVet66 for your post. Have the right parts and have adjusted them as they should. And it runs great now. I'm very pleased. Do I get a lot of motorcycle to drive to the small amount of money.
Just as you say, the original CDI is well functioning, but starting to be expensive and difficult to obtain. Especially here in the northern parts of Sweden. Wanted to begin the modernization of the most important for safety, and the next step is to taking on the charging system and the rest of the electrical system. But everything works fine and I do not hurry ... so modifications are going to make it even better and more reliable .. :-) Have been doing some engine tuning in race cars before, so this with an old motorcycle is a bit nice therapy to fuss with.

I have leftover, standard CDI box for a GS1000G, with the ignition timing in the box and even an older CDI box for a GS850, the one that should have mechanical ignition advance if anyone wants to buy them?

Thanks for the welcome ... :-)

[OldVet66]

These are great comfortable bikes, designed to run on low octane pump gas. The 1000G is a smooth all weather runner, enjoy.

[Ulf F]

Absolutely, I agree.
I had a GSX 1100 E from -81 a few years ago. (Yes 16V was called GSX 1100 in Sweden), as I was to Scotland on holiday in 2007. With the wife on the back. No problem at all .... (y) Simply a nice ride ... :-)