question for my CC & CR Bros.... - Victory Forums - Victory Motorcycle Forum
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post #1 of 20 (permalink) Old 06-20-2011, 05:42 PM Thread Starter
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Default question for my CC & CR Bros....

I know I will prob. be bitc#ed at by the search feature police, and I have done some searching -- but wanted to ask others with my same bike a question -

I have been running premium fuel til I read that high octane when not needed will cause carbon build up - I tried a couple tanks of mid-grade - ran great less if any popping -- then I ran 2 tanks of 87 and the bike has been running peerfect - no pinging and no popping on decel - it seems to like low octane fuel the best........are you guys finding the same results and running lower octane fuel?
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post #2 of 20 (permalink) Old 06-20-2011, 06:09 PM
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I alternate between the mid grade and hi test. I believe this bike runs better using what the manafacter recomends... higher octane.

Ron

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post #3 of 20 (permalink) Old 06-20-2011, 06:10 PM
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All I can tell ya is it's a 10-1 compression motor with no water cooling that combustion chamber. Using lower grade fuel will burn hotter. So use at your own risk. Burn a valve or two and you'll be kicking yourself.

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post #4 of 20 (permalink) Old 06-20-2011, 09:29 PM
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I've tried the 87 octane however I do get an occasional back pop against the starter if it doesn't fire off the first time and I don't get that with the premium so that's telling me the 87 is firing off a little to quick. Bike also seems to run a lot smoother on the premium so I'm just going to stick with the manufacturer's recommendation of 91.
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post #5 of 20 (permalink) Old 06-20-2011, 11:05 PM
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I don't know enough to experiment on my bike, so I am also sticking to what the owners manual states: 91 octane, everyday since day one.

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post #6 of 20 (permalink) Old 06-21-2011, 07:44 AM
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Like BFP said, you run the risk of things getting too hot. Mine runs fine on premium and that's the people who designed and tested it for (likely) millions of miles recommend. Way I figure it, an extra $50 for every 10K miles or so (cost difference) isn't worth the risk.

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post #7 of 20 (permalink) Old 06-21-2011, 08:59 AM Thread Starter
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It did'nt seem to be running hotter....but, burning a valve would be a nightmare! I will stick with mid grade on cool days and high octane on hot days. Using the lower octane use has nothing to do with cost to me, just want to keep carbon build up to a minimum.
Thanks for the advice,

Don
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post #8 of 20 (permalink) Old 06-21-2011, 09:26 AM
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Carbon build up will happen one way or the other over time. Higher octane fuel woun't cause accelarated build up as long as what it's called for. And most higher grade fuels will have some cleaners in them anyhow to help keep things clean so you should be fine.

Adam
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post #9 of 20 (permalink) Old 06-21-2011, 10:51 AM
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Ok, I have had a problem with my motor running to rich. With comments of people who I ride with that do not want to ride behind me because of the exhaust fumes. Makes there eyes water and they get headaches. I get extreme carbon build up on my exhaust tips, a black coating inside of 100 miles that is thick, to where you can not see the paint. I have had a dyno pull made and was asked if it was a diesel because of all of the black smoke that poured out of the exhaust that filled up the garage. That was a HD shop and they got a lot of laughs from that.

I read the post and said what have I got to lose. I know enough that I know what rich is (to much fuel or fuel not being burned) plugs that come out black and full of soot. Even when warm rev the engine and see the black come out of the exhaust.

So I cleaned my ehausts tips and tried lower octane fuel and ran a couple of tanks. The result is almost 300 miles and I can still see the paint on my exhaust tips, NO SPARK knock, 3 to 5 mpg more, and it feels a little smoother.

My other option is a fuel controler, $200 to $500, that will automatically reduce the amount of fuel being used to make the engine more efficent. Resulting in the same effect as what I am doing now.

I read this forum a lot, I do not make a lot of comments, I am of the silent majority, there is also a wealth of information here to be used or not used. This is something that made some sense so I tried it and it works.

For all the wrenches, keep the information comming because I can still use your help.

Buster

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post #10 of 20 (permalink) Old 06-21-2011, 11:22 AM
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Here is something to mull over. You just put on a PUBLIC forum that a Victory rep is a member, that you are using less than the recommended octane.

IF you burn a valve you have just voided your warranty.

The Magnuson act requires the manufacturer to prove that the customer or the aftermarket products caused the failure.

In this case stating you are using lower octane is proof if you damage your engine.

I'm just sayin.


Buster I would advise you take your bike to a VICTORY dealer and have them check the TPS.
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