http://www.mercuryracing.com/sterndrives/hp1025sci.php

Mercury Racing is pleased to announce the release of the all-new 1025 SCi sterndrive engine package. The engine, based off the big block 1075 SCi, features an all-new fuel calibration which enables it to run on 89 posted pump octane (R + M)/2, or (95 RON) International fuel rating, versus the more powerful 1075 SCi that requires 91 posted pump octane (R + M)/2, or (98 RON) rated fuel. Mercury Racing Engineering made the fuel requirement change in response to the limited availability of fuels with the higher octane ratings at marinas and on-water facilities around the world.

Merc's new 1025, Nortech, Potter, Sterling, Paul Plaff, I think JCperf. and Cobra have some to and I am sure I am missing some.

Precision Marine.. Eddie Young.. Chief..

Hey Jass what are you going to build now? Or are you waiting for the economy to get better?

Chief
www.ChiefEngines.com

He's hiding from Julie Sullivan :eek:

Chief's web site is being updated but when I had a thread about a switching power to maybe turbine's or deisel because of needing 91 oct or higher for my 800-850 hp motors in the Nortech I got about 5 pm's from engine builders that said they could setup my motors to run on 89 oct. That was 2 years ago and alot o them said they could get 900 on 93 but if I put 87-89 in they would run at 750 or so, but now it seems that they can get 1000 hp with 89 is great. Since I live on the water and the boat is on a lift and I have a 500 gal. fuel tank in the ground here I want to be able to save the cash buy buying in bulk but the best I can get them to deliver now with the e-10 gas is 89oct. It was nice when I could get 92 and I would put 500 in the ground and 300-400 in the boat and pay less than it was on the street but now I have to have motors that will run on 89 or I have to dump a bunch of Tulane in the tank and I don't want to mess with that all the time.

Randy, can i count both my motors?:grinser010:

Skater Jim put the word out on your motors, or previous owners. They would be way over a 1000 hp added together.:evilb::evilb:

Out here in Cali, I ran 91 in my Eickert motor which was at about 850hp. I would also mix in a little 100LL due to the high temps where I boat.