Octane questions? correct or not?
- Thread starter Blaster200boy
- Start date
Do a plug chop. May be running lean. If OK, mix up a batch of 3 gallon 92 and 1 gallon 110 race gas for a nice batch of cheap 96.5 octane fuel.
again not saying you CANNOT run av gas but cant you find an easier solution, I believe the Gov. is gonna make it very hard to buy unless you pull up in your cesna? why because they know people are using it outside of aviation and you know are Gov. that is a no-go.
With the mods listed, you shouldn't need any kind of race gas. What exactly do you mean by, its pinging? If your having any doubt, go a compression test and see where its at
there you go 120 psi and I need race gas that is a typical blaster answer thats where the sarcasim comes in, its an air cooled enduro style motor noone should use race gas in a blaster 50/50 at most, now a drag-racer thats different but really who's drag racing a blaster
So no one should run race gas in a blaster because its an air cooled enduro style motor? How does that make any sense? Gonzo, do you have any experience with a built blaster motor?
By the way, strokedtater drag races a blaster and from the vid's that I've seen does a pretty good job of spanking machines that are alot bigger
it is, I don't "think" Kennedy or Flotek have ever gotten a 240 to make as much power as a stock YZ250, and I said a stock YZ, and thats not saying they are not doing an excellent job they are just maxing out an enduro design, Yamaha did not make that motor to run like they or you are doing, you guys can be commended for getting what you've gotten, it would be easier to put a YZ motor in there and call it good
i have a 1998 blaster..runs really good and has alot of power..only mods are an aftermarket pipe and K&N filter other then that it's stock.i've been running 87 octane and mixing it 32-1.but i've notice alot of pinging lately..i was thinking of switching to the highest preminum pump gas and still mixing it 32-1 but add alittle octane booter..would this work ok..
octane booster it a joke and a waste of money.. when they say you get 3 or 4 more octane its .3 or .4 of 1 octane...not worth it
i just had to pay 36 bucks for 5 gal.. without the oil added..
Im only spending about 32 for the 4.7 gallons and 1 pint of Bel- Ray MC-1
You're absolutely right, the 195cc air cooled blasters port design is circa 1970's...pretty sure the 250cc motocross bikes of that time were'nt putting down 46.8hp at 8800 RPM. The YZ's port layout is very modern, and the cylinder is power valved and liquid cooled. Not to mention the 15mm stroke advantage the YZ has. The YZ's rated power is at the crank, so factor in a 15% parasitic loss and you're sitting right around 40 at the tire...hmmm
A builder can only do so much with the piece he is given. So lets give this a try, Get a stroker crank and quality Nikasil big bore cylinder (not a re-sleeve) to bridge the displacement gap some. Cut the head to a more efficient design, which the YZ has. Bolt on a better performing pipe, which the YZ has. Recut the ports to allow more efficient flow and cylinder scavenging. Throw on a bigger carb, which the yfz has. 40 hp to the rear tires isn't looking so far off, and you still have a counterbalanced engine that won't rattle your teeth out. All for less than the cost of a Donor YZ250. I'll keep the blaster motor, personally I think it's less hastle than a swap.
what you just spent in mods is more than a yz motor costs, and in 20 mins I could have 50 RWHP and my bike runs all year without a rebuild, you complained about stroke length, yep a race engine has that, a Blaster isn't a race engine, I don't think you guys have ventured outside the Blaster world, if you seen how real 2 stroke motors were designed and built (race)you wouldn't even pull the head off a blaster, I tell you what you build the baddest blaster you can I'll find someone around Deltona Fl. with a Blaster that wants a trick liquid motor and it would not even be a race I would beat you every single time, 30 races in a row, although your race blaster would never make 30 runs, why?air cooled too much comp. to get the needed HP
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