YoungGun'98 Posted February 8, 2009 Report Share Posted February 8, 2009 hey could anybody give me some ideas for what size domes to run with a new coolhead? ive got t3 pipes, +4 timing, pro flo filter, boyensen reeds, stock carbs.. not much done. whats the most agressive i could go with pump gas? Quote Link to comment Share on other sites More sharing options...
vulvafan537240 Posted February 8, 2009 Report Share Posted February 8, 2009 hey could anybody give me some ideas for what size domes to run with a new coolhead? ive got t3 pipes, +4 timing, pro flo filter, boyensen reeds, stock carbs.. not much done. whats the most agressive i could go with pump gas? whats your elevation? Quote Link to comment Share on other sites More sharing options...
YoungGun'98 Posted February 8, 2009 Author Report Share Posted February 8, 2009 2635 ft. Quote Link to comment Share on other sites More sharing options...
YoungGun'98 Posted February 8, 2009 Author Report Share Posted February 8, 2009 anyone? just lookin for a quick answer Quote Link to comment Share on other sites More sharing options...
twizted269 Posted February 8, 2009 Report Share Posted February 8, 2009 anyone? just lookin for a quick answer Sea Level 1000' 2000' 3000' 4000' 5000' 18cc 197 178 171 170 165 145 19cc 183 167 160 158 152 137 20cc 169 156 149 146 140 129 21cc 156 145 138 134 128 121 stock 130 125 118 112 106 100 around 155 psi and under you should be fine on 93 octane. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted February 8, 2009 Report Share Posted February 8, 2009 You want to shoot for 150-155 psi for pump fuel. 20's would be deffinatly on the safe side. What is your octane rating for the premium pump fuel. If you can get 93 then I would probably go with 19's and if it detonates I would just back the timing off a little. Here is a chart on this page. http://www.nossmachine.com/banshee_heads.htm Quote Link to comment Share on other sites More sharing options...
YoungGun'98 Posted February 8, 2009 Author Report Share Posted February 8, 2009 ah.. so around 20's. will this be a pretty fair increase in power? Quote Link to comment Share on other sites More sharing options...
YoungGun'98 Posted February 8, 2009 Author Report Share Posted February 8, 2009 You want to shoot for 150-155 psi for pump fuel. 20's would be deffinatly on the safe side. What is your octane rating for the premium pump fuel. If you can get 93 then I would probably go with 19's and if it detonates I would just back the timing off a little. Here is a chart on this page. http://www.nossmachine.com/banshee_heads.htm oh alright thanks man. premium here is 91, but is it safe to run enough octane booster to jump me to 93 so i could possible run 19s? Quote Link to comment Share on other sites More sharing options...
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