• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Ignition timing

A

ArttuH

Forum Mentor
Hello,

I just installed a programmable ignition to my GS1100 and now I'm searching for optimal advance values. Any ideas what is the maximum safe value for full load? And how the advance should change as function of the rpm? I think that the advance should grow as the rpm increases but the power band (6000-9000 rpm) needs less advance. I have already tried to increase advance for partial load and it seems to improve drivability. The maximum advance with stock ignition is 32 deg, how conservative value this is? The engine is almost stock except the exhaust and the fuel injection.

Thanks in advance. I appreciate any information.
 
I run 35 deg on my race bike. I've heard of a ton of guys running 34 deg. I picked up 1 mph when I went from 34 to 35. I'm afraid to go any higher.
 
Thanks for the info. Do you use the mechanical advancer or just static timing? And what kind fuel you use? I guess that you have somewhat higher compression ratio?
 
10.5-1 1166 pistons. I'm running a schnitz box ignition. Static is 18 deg. I think advance is set at 17. The box does it for me between 2000-3000 rpm. I dont ride my bike on the street.
 
So the total advance is 35 after 3000 rpm. This is a good starting point for experiments. Thanks again.
 
You must log in or register to reply here.

Similar threads

R
mechanical advance limited range GS550
Replies
2
Views
92
Nessism
Nessism
ShawnR
1981 GS550 - Bogging at WOT and I'm stumped.
Replies
18
Views
319
jprice90
J
KiwiAlfa156
Retarding Ignition Timing
2
Replies
25
Views
560
rphillips
R
P
GS1100L 4 valve rebuild vendors and thoughts on my investigation
Replies
7
Views
186
prichmon
P
G
misfiring over 6000 rpm
Replies
11
Views
233
chris
chris
Back
Top