Results 1 to 2 of 2
  1. 06-30-2011, 07:36 AM #1
    tomcat
    tomcat is offline
    Member
    Join Date
    Jun 2004
    Location
    brown county IL
    Posts
    636

    Jay octane question with your heads

    Jay I've always ran 93octane with the heads you cut a few years ago. I'm movinig back to my homeplace and 91 is all I have without driving 30 miles. I'm still running about 143 psi on all 6 and our alt is 875. 1998 200 merc efi. Wanted your input
    Thanks Justin
    JUSTIN LAWSON
    IL ANG 183FW Retired SMSGT
    1998 ASTRO2000 DC[Hooter Scooter] 200MERC EFI TRO4 23P
    Engine by Jay Smith Racing
    Reply With Quote Reply With Quote
  2. JaySmithRacing
    JaySmithRacing is offline
    Member
    Join Date
    Sep 2004
    Location
    Brookeland, Texas
    Posts
    3,983
    #2 07-01-2011, 06:32 AM

    Re: Jay octane question with your heads (tomcat)

    Might try splashing a little ACES fuel octane booster OR back the WOT timing back a couple of degrees for safety..

    Jay
    JSRE
    www.jaysmithracingengines.com
    832 597 2603 cst
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Similar Threads

  1. Fuel octane question
    By BigMouth in forum Mercury - 2.0/ 2.4/ 2.5 Liter High Performance
    Replies: 6
    Last Post: 02-20-2012, 05:15 AM
  2. OCTANE question
    By dalec1 in forum Yamaha Motors - High Performance
    Replies: 2
    Last Post: 09-23-2011, 05:36 AM
  3. Octane or lack of question for Don
    By Nikon Man in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 7
    Last Post: 05-27-2011, 05:04 AM
  4. Last octane question....
    By Ka'King in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 2
    Last Post: 04-29-2010, 12:35 PM
  5. Octane question
    By gambler1 in forum Mercury - 3 Liter & 3 Liter High Performance
    Replies: 4
    Last Post: 08-31-2009, 04:37 PM