Brian Curreen 2 Report post Posted April 29 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 Share this post Link to post Share on other sites
Mark_Fleming 29 Report post Posted April 29 http://www.pencilgeek.org/2009/05/octane-rating-conversions.html 1 1 Share this post Link to post Share on other sites
ajg193 5,820 Report post Posted April 29 95 is pretty much their 91 1 1 Share this post Link to post Share on other sites
Ghostchips 3,974 Report post Posted April 29 Their 86 is our 91. 1 Share this post Link to post Share on other sites
SOHC 6,124 Report post Posted April 29 When you get your engine built get them to make it a side valve, they love low octane. 4 1 Share this post Link to post Share on other sites
Bling 12,911 Report post Posted April 29 Are they tuning it too? Like on an engine dyno or something fancy. Share this post Link to post Share on other sites
Brian Curreen 2 Report post Posted April 29 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 Share this post Link to post Share on other sites
