02-20-2021, 03:01 PM | #1 |
Join Date: Feb 2021
Posts: 1,000
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Gasoline questions ??
From what I gather the compression on the Brozz 250, that I expect to receive in a couple days, is 9-1 . I don't know if 93 octane will offer any power,or anti- knock advantage over 91 octane, but no more fuel than these bikes could consume ,I will probably run 93. My main question is concerning alcohol content of fuel. I know these Chinese bikes come with a smaller than ideal main jet, and I know from some experience with racing that an engine will consume twice as much fuel on alcohol as on gas, and the carb has to be jetted according. If nothing has changed in the last few years we have one gas station that offers pure gas. Will these bikes in stock tune normally run better with gas that has no alcohol. Do any of you mix your own octane booster / fuel recipe?
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02-20-2021, 06:37 PM | #2 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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Quote:
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02-20-2021, 06:54 PM | #3 |
Join Date: Oct 2020
Location: Central VA
Posts: 1,280
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I run at least 91 since getting the head ported, but since it's not been decked im guessing its probably not needed and 87 would be fine, in either case I dont mind spending the extra 50 cents or so to fill.
And since i ride year round with usually no longer than 2-3 weeks of downtime when it gets too cold or icy out, I don't worry about carb getting gummed up as ive read the gas will usually last at least one month. Now for all my other small engines, ie, mower, weed whacker, chainsaw, etc, I always use Startron Enzyme treatment and it claims to keep the gas fresh for up to 2 years, never have had an issue in many years.
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2024 Templar 250 2021 Beta 500 RRS 2018 VStrom 1000 XT Former China Bikes: Tao DBX1, Brozz 250, CSC RX4, Titan DLX, Templar X, Storm DLX 150 |
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02-20-2021, 07:40 PM | #4 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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Quote:
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02-20-2021, 10:56 PM | #5 |
Join Date: Aug 2019
Location: Central Ohio
Posts: 297
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I run mine on premium just because it's only $7.00 to fill it up from empty.
They also run on premium 50/50 mixed with two stroke oil, but poorly, lol. I accidentally found that out when I topped it up with mix intended for my boat.. it was only a little while before I realized it and drained the bike's tank out. MegaDan, I've read of you using MMO in the gas before... Would you recommend it over a product like Stabil? Or to use both products together? I've always treated with Stabil. Also, do you add MMO to your engine oil as well? |
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02-20-2021, 11:18 PM | #6 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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Quote:
I am sure there are properties of the MMO beyond the reason I use it, which is mainly to keep a light coat of oil on the bare metal in the tank, and lubricate and protect the moving parts in the carb from wear. Marvel claims it will also lubricate the valve face and seat and prevent some wear in that area as well, but I have no experience of my own to really back that claim up. It is also possible that it does help keep varnish from building up, but again, I can't say. I never let fuel sit in the bowl long enough to find out.
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02-20-2021, 11:53 PM | #7 |
Join Date: Aug 2020
Location: Australia
Posts: 1,434
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I'd be content with regular gas. My only concern with Ethanol added is it might absorb air moisture and internal rust. Or react with any rubber/plastics that a not compatible. |
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02-21-2021, 12:32 AM | #8 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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Quote:
Stabil Marine works great. With or without ethanol, and with or without a fuel additive, any carbureted engine should have the bowl drained before storage. Lawn mower, motorcycle, tractors, etc. Carburetors don't like having fuel sit in them, no matter what kind of fuel it is. If it doesn't oxidize like ethanol fuel, it will varnish and require some carb cleaning. Bike specific, I also only store a bike with a full tank. Even if the fuel does go bad, it protects the tank from rusting out due to condensation or plain moisture exposure in the air. A few bucks worth of gas vs. hundreds for a tank isn't a bad trade off. I have stored E10 fuel with marine stabil and it still worked 8 months later, no running issues, no moisture issues.
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02-21-2021, 01:28 AM | #9 |
Join Date: Aug 2019
Location: Central Ohio
Posts: 297
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I have used Marine 360 Stabil from brand new... No problems. I will just continue using that product and not worry about MMO. I use it for the boat anyway, might as well keep the same product for different hobbies.
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02-21-2021, 01:46 AM | #10 |
Join Date: Aug 2020
Location: Australia
Posts: 1,434
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Hey Megdan,
That is 1 year of testing result every month for 1 year. with little to no difference in performance. the are also to other variables being tested inside and out doors untouched every 6 months. I just linked the most recent test results. Don't let the false teeth fool ya, Taryl Dactyl knows his stuff. If you want to use brand X by all means do but from what I've seen modern fuel seems to be fine enough without it. I understand and agree with the %ethanol fuel concerns and if all you can get is ethanol added fuel in your area than a stabilizer might be beneficial. That's why I just use regular unleaded in all my small engines. Last edited by XLsior; 02-21-2021 at 04:09 AM. |
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02-21-2021, 04:53 AM | #11 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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Quote:
I don't use it all the time, only when I park my bikes for the 4-5 months it's cold as hell and icy outside where I live, and I would rather not take my chances.
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02-22-2021, 01:04 PM | #13 |
Join Date: Dec 2018
Location: PNW
Posts: 984
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Here is another test interesting. I confess I use Marine 360 with non ethanol fuel.
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02-22-2021, 02:11 PM | #14 |
Join Date: Oct 2016
Posts: 347
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My only issue with Ryan's video is he says tanks are all plastic now. As far as I know all Chinese motorcycles have steel tanks so rust is a big issue for us. Actually all 3 of my Motorcycles have steel tanks and I believe even the 2021 CB500X still uses a steel tank as well.
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02-22-2021, 02:30 PM | #15 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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Quote:
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