C14+ Versus MS109

Squirrell · 01-22-2019, 05:46 AM

Hi Guys, Down under in Australia the government has banned Leaded race fuel from June this year. So we have to switch to unleaded race fuel.
Can anyone tell me how much I would have to modify my carby if at all to run MS109. We were running C14+. Engine is BBC 572 , 14.2 to 1 comp, 1150 Dominator 2 circuit, around 893 hp. The only information I can find is go up a few jet sizes and maybe make the idle circuit a little richer. Same ignition timing ?. Is the MS109 a slower burning fuel ?.
Thanks in advance for your help, Patrick.

01-22-2019, 05:46 AM	#1
Squirrell Junior Member Join Date: Apr 2013 Posts: 33 Likes: 0 Liked 0 Times in 0 Posts	C14+ Versus MS109 Hi Guys, Down under in Australia the government has banned Leaded race fuel from June this year. So we have to switch to unleaded race fuel. Can anyone tell me how much I would have to modify my carby if at all to run MS109. We were running C14+. Engine is BBC 572 , 14.2 to 1 comp, 1150 Dominator 2 circuit, around 893 hp. The only information I can find is go up a few jet sizes and maybe make the idle circuit a little richer. Same ignition timing ?. Is the MS109 a slower burning fuel ?. Thanks in advance for your help, Patrick.