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  1. 93gtmustang

    91 Octane Detonation?

    I had sold my car back in 2016 for my child's college tuition. When I bought it back, I checked the timing. The bolt on the distributor wasn't tightened all the way down. The timing between 22 and 23 advanced with the spout out! The car wreaked of gas. He said he ran 110 race fuel mixed with 93...
  2. 93gtmustang

    91 Octane Detonation?

    Or how about using an octane booster to raise it to 93? Do these products really perform? If so, which is the one to use without damaging O2 sensors etc...
  3. 93gtmustang

    91 Octane Detonation?

    Thanks! So what do you usually run. 91 or 93? What does he have the timing at?
  4. 93gtmustang

    91 Octane Detonation?

    I can get ethanol free 91 octane in New Lebanon NY. I have my timing at 15 degrees advanced running 93 octane with ethanol in it. Do you think I'm good with the 91 or do I have to back the timing down a couple degrees to be safe from detonation?
  5. 93gtmustang

    FUEL FLEX HOSE KIT

    Thanks for all the info! The kit is coming today. Can I use silicone dielectric grease on the O-rings? How hard do I tighten the hose clamps. As tight as possible or is there a happy medium like snugging them up just enough, like you would in plumbing? I did use a razor. Vertically sliced the...
  6. 93gtmustang

    FUEL FLEX HOSE KIT

    The lines run back to the tank and connect forward to the fuel rails.
  7. 93gtmustang

    FUEL FLEX HOSE KIT

    That line is definitely pinched or crimped. It was below the barbed hard line fitting when I cut it off. I believe that is the supply line. How could it deliver the proper fuel like that? There are pin holes where it is on the barbed fitting too. Wow Check out the fuel line safety clip. They...
  8. 93gtmustang

    FUEL FLEX HOSE KIT

    Thanks! Those look nice until I read the reviews on Jegs. I wish they made braided ones for what I'm trying to repair!
  9. 93gtmustang

    FUEL FLEX HOSE KIT

    Man those spring lock connections off the fuel rails were a bitch to get off. I guess they've been on there since 1993 lol. Cutting off the vinyl line was easy. Just waiting for the kit to come. I can get 91 ethanol free in New Lebanon, NY on the way to the track. Which would be better for the...
  10. 93gtmustang

    FUEL FLEX HOSE KIT

    Thanks for all the help! Is this the right nylon hose? https://www.napaonline.com/en/p/NOE7305613 Then I would need the rubber hose that goes over it. I was going to put in a piece of rubber hose where the old one had crumbled. But, I stupidly damaged some off the nylon fuel line removing the...
  11. 93gtmustang

    FUEL FLEX HOSE KIT

    What's the bad about the rubber efi hose?
  12. 93gtmustang

    FUEL FLEX HOSE KIT

    Thanks! Do you have a link for that repair kit?
  13. 93gtmustang

    FUEL FLEX HOSE KIT

    I was thinking that but was unsure if that was dangerous. I think I'll go that route for now. Thanks!
  14. 93gtmustang

    FUEL FLEX HOSE KIT

    I found deteriorated fuel line rubber hose by the steering rack recently. You can see it's missing a section in the pic. There is a hard line in there. I've been driving it down the track for some time like this. It doesn't leek. I ordered this kit...
  15. 93gtmustang

    GT-40 M-6049-X303 Plug Gap

    Exactly, I read 30's are preferred. I've been running the 24's since 2007 lol!
  16. 93gtmustang

    GT-40 M-6049-X303 Plug Gap

    Yeah, the 24's are right on the limit. 345 hp at 90% duty cycle. That's what the rated horse power is for the engine. I might just get some 30's at some point and a new Pro- M MAF meter for 30's and be done with it.
  17. 93gtmustang

    GT-40 M-6049-X303 Plug Gap

    I still have the 2006 Ford Racing catalogue that had that engine in it lol! But there's no info on the pistons. Just that they are Hypereutectic. I don't know about flat tops. I think they only came on 1986. The Hypereutectic dished dome with four valve clearance reliefs came on the 1993 5.0's...