Tedder Posted September 2, 2020 Report Share Posted September 2, 2020 Up in size to lower compression Quote Link to comment Share on other sites More sharing options...
Justsayin6916 Posted September 7, 2020 Author Report Share Posted September 7, 2020 So if I have 19 cc domes I should put 20 or 21cc domes Quote Link to comment Share on other sites More sharing options...
fastbanshee8 Posted September 7, 2020 Report Share Posted September 7, 2020 Are you wanting to run race gas, or pump gas? Quote Link to comment Share on other sites More sharing options...
Tedder Posted September 7, 2020 Report Share Posted September 7, 2020 Call someone that cuts domes and talk to them about your setup and what you're looking for. Quote Link to comment Share on other sites More sharing options...
SKEETER Posted September 7, 2020 Report Share Posted September 7, 2020 Trick racing be your best bet Quote Link to comment Share on other sites More sharing options...
Justsayin6916 Posted September 7, 2020 Author Report Share Posted September 7, 2020 Race gas Quote Link to comment Share on other sites More sharing options...
ClaudeMachining Posted September 7, 2020 Report Share Posted September 7, 2020 Do a uccr test ffs!!!Envoyé de mon SM-N975W en utilisant Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
Justsayin6916 Posted September 7, 2020 Author Report Share Posted September 7, 2020 What? Quote Link to comment Share on other sites More sharing options...
Tedder Posted September 8, 2020 Report Share Posted September 8, 2020 I still think you need to call a Shop but here's my .02 based on what we know. *If* 210# with 19cc domes is accurate (which seems a stretch) I'd say drop to 22's If it has an adjustable timing plate I'd go 4* to 5* max Quote Link to comment Share on other sites More sharing options...
grantevans713 Posted September 20, 2020 Report Share Posted September 20, 2020 For peak horsepower and a low risk of detonation, you want compression 165-180psi. What domes you use will depend on your fuel type. With 19cc domes you should be running 115\methanol. if you want to run 110 then drop to 20\21cc. If running 105 go to 21/22cc, and if you want to run pump gas 23/24cc. I had a bike with mikuni 34's. At my elevation of 1800ft I ran 280 main jets, you should be somewhere close to that. Check your jets, put in fresh plugs and ride WOT for a bit. Pull plugs and if they are black/wet then drop a size. If they are white or a light light brown, go up a size. Check your fuel air screws, make sure they are clean and maybe start with them turned out 2+1/2 turns. Make sure to figure these things out, riding with that high of compression is dangerous and you are lucky you only have loose plugs. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.