And read popping exhaust - Victory Forums - Victory Motorcycle Forum
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post #1 of 15 (permalink) Old 08-20-2012, 12:15 PM Thread Starter
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Default And read popping exhaust

http://www.mikuni.com/tg_backfires_in_exhaust.html

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post #2 of 15 (permalink) Old 08-20-2012, 01:28 PM
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I stopped trying to preach that some popping is normal a while ago because no one listens. Modified cars do it, modified bikes do it and all for the same reason. FI shuts off fuel the same way when the throttle is closed.
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post #3 of 15 (permalink) Old 08-20-2012, 02:51 PM Thread Starter
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Yup, if it ain't a leak its high performance lol. Even though I read it, I still think there is a problem lol

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post #4 of 15 (permalink) Old 08-21-2012, 04:41 AM
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I agree that a bit of poppity-pop and crackling on decel is normal because you would have to run excessively rich to get rid of all that. Backfiring is not normal. If it goes "BLAM!!!" out the pipes you need to tune that out.


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post #5 of 15 (permalink) Old 08-21-2012, 08:34 AM Thread Starter
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But hc backfiring is out the intake side, not the exhaust Side

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post #6 of 15 (permalink) Old 08-21-2012, 11:33 AM
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Quote:
Originally Posted by NJ8BALL View Post
But hc backfiring is out the intake side, not the exhaust Side
semantics...

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post #7 of 15 (permalink) Old 08-21-2012, 11:41 AM
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once tried to run a 750 CFM AFB on a Ford 460 with the stock cam and and stock cam timing.

What I had by the time I'd discovered I was 21 and stupid was burned eyebrows and pretty soon a carburetor with smaller venturis that didn't shoot fire

And I do the same thing with my popping exhaust I do with all the other noises my XR makes which don't sound like something breaking:

I ignore them.

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post #8 of 15 (permalink) Old 08-21-2012, 12:09 PM
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Good post. Popping in the exhaust is "backfiring" and tends to be a normal side effect of mods. Poping out of the intake is called pre-ignition or detonation and is extremely bad for the engine and should not happen under any circumstances. Severe damage can result from detonation.

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post #9 of 15 (permalink) Old 08-21-2012, 02:05 PM
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I have noticed my bike only pops out of one side the right side guess its a straighter shot.

I have all so noticed that the dew point or humidity affects the popping.

Like a smart man said don't close throttle all the way and you'll get no popping

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post #10 of 15 (permalink) Old 08-22-2012, 09:30 AM
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I know ive seen many race cars flaming and popping out the exhaust inbetween shifts. Its a performance issue not to be confused with a bad tune or lean condition. Most desired when max fuel and performance is wanted. It wont hurt a thing..but what the hell do i know I thought my KP had 20s on it..but in my defense the lager was tasting good when i posted that thread..But I like it when my KP pops between shifts sometimes..scares the crap out of folks..I wouldnt change a thing..It runs great

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