110 leaded?

24 replies to this topic
  • nate992v

Posted January 24, 2006 - 04:59 PM


Depends on the grade of jet fuel. The Navy/Marines use JP-5. Minimum flash point is 140 degrees. It's diesel. They run HUMVEEs and their KLR650s on it. As well as F-18s.

  • wr450fyamaha

Posted January 24, 2006 - 06:08 PM


well, i want the benefits of leaded gas but i am somewhat doubtful it will run well on 110.....so if i mixed 110 with 87 50/50, averaging to around 98.....already running 93, it couldnt make to much of a difference and it would get a good amount of lead.....and it would come out to like 3.25 a gallon....not to bad. now, do you need a special container to put it in? if so, how much do they usualy run?

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  • bootlegger2

Posted January 25, 2006 - 04:04 AM


What about octane boosters, Av. gas or race fuel?

A: The higher the octane rating, the slower and colder the fuel burns. If you run too much octane in your engine, it won't run very well because the burn is way too slow. If the octane is too high, the piston might already be at bottom dead center (BDC) and the fuel might still be burning! If the octane is too low, the fuel will burn too fast and too hot which causes detonation and leads to sure-fire engine damage! Aviation fuel is another no no. A famous engine builder (top fuel engines) told me a story about an engine that was in his shop that had major melt down in the cylinders. He said, "Arron, av. gas is for air planes! Where do you see airplanes? Up in the sky! Do you see cars up in the sky? No! How does your car run when you're up in the mountains? Yeah, like crap! There's no oxygen up there. Aviation fuel is designed to be run in a low oxygen atmosphere. What happens to that cutting torch flame when you add oxygen to it? Yeah, the flame gets hotter and turns blue! What do you think happens to an engine in a high oxygen atmosphere burning aviation fuel? Look right here at this engine and you'll know!"

He made a good point.

Octane boosters of today are usually made of two things, either alcohol of some sort of flame retardant. Alcohol works OK I guess but the flame retardant stuff that turns your sparkplugs red? Don't go there! The object is to burn all of the fuel in the cylinder, not put it out! The old octane boosters, the good ones, are all outlawed. The best that I can remember was something called Aniline Oil. This stuff worked great but you had to use a fresh air mask and wear gloves because it displaces oxygen. If you spilled it on your skin, it would turn that area blue!

this is off of another site i visit about race fuels

  • nate992v

Posted January 25, 2006 - 06:34 AM


You don't need a special container for race gas, unless your state requires it. Some places don't "allow" gas in the five gallon cans that we all love. Just keep the can full (prevents condensation and water in gas) and the normal safety precautions.

  • dukeryder

Posted January 25, 2006 - 06:02 PM


Leaded Gas won't offer you any benifit in that XRL motor, you'll probably just foul out your plugs sooner. I used to work on Airplanes and everyyear during the Annual Inspection (or 100hr if Commercial use) you have to SAND BLAST the lead off of the Electrode and porcelin inside the plug (we don't replace because they're $20/plug), and some planes would be so fouled up some plugs wouldn't produce spark (luckily there's 2 per cyl).

Anyhow, 87 Octane will produce the Most HP for an 8:1 CR engine, 93 is good for the HOT summer days 'cause it'll burn cooler. But if you put the bike on the Dyno you'll find that it'll make more HP with the 87 in the tank than 93 or 110.

We used to run 110 Leaded in a VW Rabbit race car that we had, it was running around 14:1 or 15:1 Compression, with a HUGE Cam (lots of lift and duration) and lots of Advance timing. We're talking 200+hp out of a 1.8L 4cyl. That high Octane gas won't do jack in any Stock XR, L model or R model. Any power differences felt would probably only be because perhaps the fuel is a higher quality. Next time just run some BP/AMOCO Silver in there, probably achieve the same results.

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