Brian Curreen Posted April 29, 2019 Share Posted April 29, 2019 I want to get an engine built in the usa. Q: how do I describe 95 or 98 octane to the engine builder? We use RON ratings while they use (RON+MON)/2 to work out AKL ratings. So, if I want to run my engine on NZ 95 octane what is the equivalent in usa. 1 Quote Link to comment Share on other sites More sharing options...
Mark_Fleming Posted April 29, 2019 Share Posted April 29, 2019 http://www.pencilgeek.org/2009/05/octane-rating-conversions.html 1 1 Quote Link to comment Share on other sites More sharing options...
ajg193 Posted April 29, 2019 Share Posted April 29, 2019 95 is pretty much their 91 1 1 Quote Link to comment Share on other sites More sharing options...
Ghostchips Posted April 29, 2019 Share Posted April 29, 2019 Their 86 is our 91. 1 Quote Link to comment Share on other sites More sharing options...
SOHC Posted April 29, 2019 Share Posted April 29, 2019 When you get your engine built get them to make it a side valve, they love low octane. 4 1 Quote Link to comment Share on other sites More sharing options...
Bling Posted April 29, 2019 Share Posted April 29, 2019 Are they tuning it too? Like on an engine dyno or something fancy. Quote Link to comment Share on other sites More sharing options...
Brian Curreen Posted April 29, 2019 Author Share Posted April 29, 2019 Hey Bing yeah their doing the break in and dyno I'm doing as close to 500hp as possible on pump gas. The tolerances will be tight. Probably holly fI tech throttle body on single plane man. 1 Quote Link to comment Share on other sites More sharing options...
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