| Author |
Message |
    
Bbstacker
| | Posted on Friday, April 01, 2005 - 10:06 pm: | 
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Extra parts, huh? You mean like the extra 25lbs my a$$ is carryin round? |
Xring
| | Posted on Friday, April 01, 2005 - 10:12 pm: |
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I always figured that if you opened up the airflow on a fuel injected engine, the fuel injection would compensate by adding more fuel, and would reduce your MPG. In other words, no free lunch.
K&N used to advertised that their filters would increase gas mileage but I don't understand how; unless it was one of those tests where they replace an old, clogged filter with a new, clean K&N.
Both inline 4's I've had (750 and 1100) did indeed get 45 mpg just about no matter what I did. I don't recall about my 650 twin, because I was young and didn't give a care about MPG.
The acetone deal is weird. I wouldn't try that in one of my vehicles, no way. Yours, maybe.
Bill |
Bbstacker
| | Posted on Friday, April 01, 2005 - 10:18 pm: |
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I think i'll opt out of the acetone deal too. We use that stuff at work for cleaning plastic off molds. I'll let someone else play lab rat with their Firebolt. |
Lovematt
| | Posted on Saturday, April 02, 2005 - 06:33 am: |
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Regarding the question about adding a better flowing air filter making for better mileage...this is the case depending upon the starting point of the motor and the amount of changes made.
Most stock motors are starved for air and fuel just to make them as efficient as possible. However computer controlled motors also must do what it can to ensure the motor does not run lean.
By increasing airflow, the computer will compensate as much as it can to give the motor more fuel and therefore more power. However another thing that occurs is that motor is less "strangled" and can react faster/harder to throttle inputs. If you have ever driven/ridden a very powerful vehicle (my first car was a 1200 horse 1986 Corvette) you know that it takes very little throttle to get moving. Running more throttle is often overkill as the traction of the tires are exceeding with all that power just going into smoke with the wrong tires.
If you have ever driven a tiny little econobox or moped you are often flooring the thing just to keep from getting run over. This situation is probably throwing extra gas at the motor and therefore likely wasting it.
This only holds up to a certain point. Highly modified motors don't apply here since they are tuned to only make power...mileage is usually not a concern. |
Tomzweifel
| | Posted on Saturday, April 02, 2005 - 09:37 am: |
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(my first car was a 1200 horse 1986 Corvette)
That must have been one hell of a paper route... |
Chainsaw
| | Posted on Saturday, April 02, 2005 - 12:25 pm: |
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I got +56 mpg last week doing spirited mountain riding.
I've gotten 66 mpg doing the speed limit to Rocky Mountain National Park, and that was all uphill!
Stock 9R with K&N filter. |
Fullpower
| | Posted on Saturday, April 02, 2005 - 01:06 pm: |
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i have run methanol, acetone, 100LL avgas in various combinations in the sportster. they all burn. observation: it takes a LOT of methanol to get the job done. ran a main jet .118" and it ran real strong, but less than 10 MPG, so not real practical for the road. acetone and methanol both increase octane substantially when blended with gasoline, require much smaller A/F ratios to work right. methanol is 50 % oxygen by weight, seems to work well around 6:1 A/F ratio. so it takes roughly 2 and a 1/2 times as much alcohol to do the same work as gasoline. thes are all approximations. all seat of pants hot rodding, cant document. test mule is 1458cc, 205 PSI cranking pressure, S&S G carb (54mm venturi) |
Bbstacker
| | Posted on Saturday, April 02, 2005 - 03:09 pm: |
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yeah, but what will it do to fuel injection systems? |
12bolt
| | Posted on Saturday, April 02, 2005 - 06:53 pm: |
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I checked today after some normal riding (balls out) 38mpg
04 Xb12r: K&N, Latus pipe, Race ECM, de-snorkel, cut air box. |
Fullpower
| | Posted on Saturday, April 02, 2005 - 09:01 pm: |
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i dont plan to do any chemistry experiments with my Buell EFI system. runs just fine on pure 87 octane unleaded. i dont know what the coating on the inside of the aluminum frame/tank is resistant to, and i dont really want to find out. |
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