There's already a medium sized aluminum beer keg sitting in the garage waiting for some time to convert it into a simple and capacious water injection tank. Until then I'll just keep running 100 octane.
I'm more concerned with at what point do I need to stop with the "more avance" "more boost" cycle before something breaks, let's just assume there's no knock. When do the stock rods turn amorphous and bend like clay? Regards, Vito Caputo On Tue, Jul 27, 2010 at 05:53:43PM -0700, Geoff wrote: > It's been a while since I've been boosted, I'm now a V8Roadster, but > you might want to give Flyin' Miata a ring up to see if something like > water/methanol injector > <http://www.flyinmiata.com/index.php?deptid=4534&parentid=0&stocknumber=07-17350%20%20BLUE> > > would help. > > Geoff > '01 LS2 Stealth Option Delete > > On 7/27/2010 5:43 PM, [email protected] wrote: > >Hello, > > > >I have a 1.6l miata with what's supposedly an "FM2 race kit" installed. > >It boosts to 15psi easily but requires alot of timing retard to not > >knock at even 12psi on california's 91 octane. > > > >Recently I've started filling up with Sunoco 100 octane race gas. This > >has eliminated all knocking with the boost set to 12psi and the ignition > >timing advanced 1-2 degrees past the FM defaults in zones 4 and 5. > > > >It's making great power, but as is usual with these things, I want > >more, especially given how much I'm paying for the race gas. > > > >My question is what are the safe limits of boost and ignition advance > >one can run when there's enough octane to not knock? When do the rods > >and/or pistons give up on the stock 1.6l? > > > >The FM manual recommends not exceeding 180kpa on a stock motor, so that's > >why I'm running 12psi... but even with the timing advanced from the FM > >defaults there is plenty of retard in zone 5 relative to zone 4 and of > >course zone 3. > > > >Any input based on experience is greatly appreciated. With the power > >levels it's making on 100 octane I'm afraid to just keep bumping the > >advance and wait for knock to start again. I imagine it will either > >knock hard and break something, or not knock and instead bend a rod > >because I've exceeded the mechanical limits of the stock bottom end. > > > >Regards, > >Vito Caputo > >_______________________________________________ > >Miatapower mailing list > >[email protected] > >http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > >---------------------------------------------------- > >This message has been processed by Firetrust Benign. > > _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
