Tricky-Ricky Posted May 22, 2006 Share Posted May 22, 2006 Just come back to this one and on seeing 13:1 mentioned, all i can say is John you're brave! even with water/ methanol injection you are really pushing it IMO, i have run 12:5.1 with the same set up on another car at 17psi and a drop in water injection rate would bring on instant det! so unless you have something to either cut boost or retard the timing automatically should a problem with the water injection occur, you are really looking for an immanent engine rebuild! just for clarity and IMO (actually not just mine) 12:5.1 is about the limit with water injection, and without, save for a rebuild;) Quote Link to comment Share on other sites More sharing options...
Alex Posted May 22, 2006 Share Posted May 22, 2006 12.5:1 is where race cars with limited life run... 11.8-3:1 is for road cars. Quote Link to comment Share on other sites More sharing options...
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