GL1200 jet sizes on an '84?

Classic Goldwings

Help Support Classic Goldwings:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

RazMan

Active member
Joined
Jul 6, 2022
Messages
41
Reaction score
22
Location
Dorset, UK
My Bike Models
Custom GL1200 Bobber
Triumph Rocket 3
Following my disastrous Weber conversion saga I have decided to go back to standard carbs. Taking it one stage further, I decided to delete the secondary air feed stuff which I believe was for the Californian bikes.
Now, my question is what size should my main jets be? I have ordered a carb service kit which includes a 102 main jet and I have a 125 fitted. This seems quite a jump in size and I am wondering what size you guys run on a 1200. I have a fairly unrestricted exhaust with megaphone silencers which I am guessing might make things run a bit on the lean side?

As always, any help is very much appreciated.
 
Thats my problem - what is the stock size? I have seen many different 'stock' sizes and need to know what size I should use, based on my setup. 102 seems quite lean but I am not sure that deleting the Californian junk will make a difference.
 
Main Jet sizes.jpg


You see my problem? There is no clarification as to why the main jet size varies withing the same year :unsure: I will probably stick with the larger size - safer bearing in mind my unrestrictive (loud) exhaust and air filter which will make things on the lean side
 
Thanks Oldie - I have ordered some 108's and will use them
 
Top