Methfireroad Posted May 20, 2013 Report Share Posted May 20, 2013 Have a cub motor that was set up to run pump gas and everything, 19cc domes and just found out my timing is +7. Anyone had any experience with this?? Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted May 20, 2013 Report Share Posted May 20, 2013 Mine was at +8. Anything short of that would result in a 6-10hp decrease. The curve was also affected drastically below +8. Not saying its right but I do believe it has everything to do with your dome size and not dome cc. I was running vp110 also Quote Link to comment Share on other sites More sharing options...
Methfireroad Posted May 21, 2013 Author Report Share Posted May 21, 2013 Ya he can tune just about as good as he can drive a boat 1 Quote Link to comment Share on other sites More sharing options...
Finch Posted May 21, 2013 Report Share Posted May 21, 2013 tune alky as good as steven too? Quote Link to comment Share on other sites More sharing options...
Oregon dunner Posted May 21, 2013 Report Share Posted May 21, 2013 I run +7 on my ported cub. I have 19cc domes. But use 110 or c12. I dune it more then I drag and have not had any problems. Quote Link to comment Share on other sites More sharing options...
Methfireroad Posted May 21, 2013 Author Report Share Posted May 21, 2013 Steve can tune alky Quote Link to comment Share on other sites More sharing options...
984mmshee Posted May 21, 2013 Report Share Posted May 21, 2013 I run +7 on my SC 4mill on race fuel Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted May 22, 2013 Report Share Posted May 22, 2013 Pretty sure he just need to know what the most timing guys are running with pump fuel. It's pretty easy to throw timing at motors on race fuel. Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted May 22, 2013 Report Share Posted May 22, 2013 Some say +5, some say +7 and other are just way off the charts. I personally have a dyno sheet that showed +8 as my sweet spot. Throwing timing on any motor should be done with extreme caution. It's no different than jetting. Each bike knows what it wants and timing is treated no different. I'm no expert but first hand experience is what I am using as my source. Quote Link to comment Share on other sites More sharing options...
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