Vitesse Stage 3R Turbo Porn
11-28-2009, 07:11 PM
#46
Drifting
Thread Starter
Spencer- Stated earlier that my buddy daily drives his '05 Evo 8 with BBK Light turbo, 272 Cams on E85, and returns about 200-225 miles per tank. Somewhere like 15-17mpg depending on what his right foot feels. He has gotten 70 miles to half tank before (roughly 10-11mpg). This is on a stock internals 2.0L on 34lbs of boost. Makes 470awhp/490awtq.
On a 951 with similar power, I would imagine around 9-10mpg will be a low. I'm expecting about 12-13mpg overall (my right foot is very heavy though and I love me some boost).
On a 951 with similar power, I would imagine around 9-10mpg will be a low. I'm expecting about 12-13mpg overall (my right foot is very heavy though and I love me some boost).
11-28-2009, 07:16 PM
#47
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This is one of my favorite questions. It in itself is a trick question.. not an apples to apples sort of thing... I will keep out all the technical lingo to make this as short and simple as possible, otherwise this would be a thesis paper..
On a motor DESIGNED FOR REG FUEL. (lower compression, poor head design (inefficient) .. 15-25% less on regular driving. This is a GENERIC statement. All motors/tune being different. But on a motor that is DESIGNED FOR ETHANOL! 14-15compression ratios. Advanced timing. You can have a MUCH more efficient engine running about the same mileage per gallon on regular fuel.. Which is a HUGE feat in itself seeing that the same motor is getting you further on LESS BTU's per gallon on Ethanol, as compared to BTU's per gallon of fuel.
Un-fortunately, all the comparisons are from motors designed for reg crappy fuel running both fuels, which is home team advantage to say the least. Pricing of the two fuels has changed dramatically from last year. Ethanol is up 10% for some reason. I will use all my strength to refrain from that topic.
In short, ethanol has less BTU's of energy than regular fuel, but so much more efficiency can be utilized with Ethanol that you can Stretch that BTU energy further.
To really bring this home, I will reverse the thinking to help the picture Im trying to paint here. Basically, you can burn ethanol, E-85, in an engine designed for petroleum based fuel, but you Cannot burn regular fuel (93 Octane pump) in an engine designed for E-85 because it is not as efficient a fuel. AND burn cleaner. Save some money, save the planet. How cool is that?
Last edited by 95ONE; 11-28-2009 at 07:40 PM.
11-28-2009, 07:53 PM
#50
Drifting
Thread Starter
I don't. I try to resist going into the garage. I had to today though to show my sister the turbo.
It's depressing going into the garage and seeing my '91 S2 on Jack stands, but running...and my '87 951 on the ground, but not running lol.
Hopefully the S2 will be back on her feet again soon. The Vitesse Turbo kind of ate up the S2 funds for a bit
It's depressing going into the garage and seeing my '91 S2 on Jack stands, but running...and my '87 951 on the ground, but not running lol.
Hopefully the S2 will be back on her feet again soon. The Vitesse Turbo kind of ate up the S2 funds for a bit
11-28-2009, 08:26 PM
#51
Rainman
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This is one of my favorite questions. It in itself is a trick question.. not an apples to apples sort of thing... I will keep out all the technical lingo to make this as short and simple as possible, otherwise this would be a thesis paper..
On a motor DESIGNED FOR REG FUEL. (lower compression, poor head design (inefficient) .. 15-25% less on regular driving. This is a GENERIC statement. All motors/tune being different. But on a motor that is DESIGNED FOR ETHANOL! 14-15compression ratios. Advanced timing. You can have a MUCH more efficient engine running about the same mileage per gallon on regular fuel.. Which is a HUGE feat in itself seeing that the same motor is getting you further on LESS BTU's per gallon on Ethanol, as compared to BTU's per gallon of fuel.
In short, ethanol has less BTU's of energy than regular fuel, but so much more efficiency can be utilized with Ethanol that you can Stretch that BTU energy further.
if i normally net around 20mpg in town and 29 or so highway on 87 octane in my na and i converted to run on e85 and maintained my driving habits, i could generally expect to get about 15/22?
11-28-2009, 08:30 PM
#52
Drifting
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Yes. May not be as a dramatic decrease in your highway MPG's though.
11-28-2009, 10:10 PM
#54
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Hrm, good info in here.
So I take it that I could use higher compression pistons then to more effectively use the e85 if I decided to run it 100% of the time, correct?
So I take it that I could use higher compression pistons then to more effectively use the e85 if I decided to run it 100% of the time, correct?
11-28-2009, 10:16 PM
#56
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It's also correct to assume that if I have a wideband o2 sensor and gauge that I use for gas, it won't read correctly for e85, right?
Sorry for all the questions, just trying to learn more about it, plus a friend of mine has just started using e85 in his talon and we're still getting it tuned.
Last questions are, are our lines braided up until the engine bay and is our gas tank made of plastic or metal? Just worried about e85 corroding it.
Sorry for all the questions, just trying to learn more about it, plus a friend of mine has just started using e85 in his talon and we're still getting it tuned.
Last questions are, are our lines braided up until the engine bay and is our gas tank made of plastic or metal? Just worried about e85 corroding it.
11-28-2009, 10:42 PM
#57
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No real point converting to E85 on an N/A though??
11-28-2009, 11:52 PM
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It's also correct to assume that if I have a wideband o2 sensor and gauge that I use for gas, it won't read correctly for e85, right?
Sorry for all the questions, just trying to learn more about it, plus a friend of mine has just started using e85 in his talon and we're still getting it tuned.
Last questions are, are our lines braided up until the engine bay and is our gas tank made of plastic or metal? Just worried about e85 corroding it.
Sorry for all the questions, just trying to learn more about it, plus a friend of mine has just started using e85 in his talon and we're still getting it tuned.
Last questions are, are our lines braided up until the engine bay and is our gas tank made of plastic or metal? Just worried about e85 corroding it.
not sure about the inner liner
Also, you're wideband should read just fine like it was gas. Don't adjust. 1point lambda will read 14.7 as usual. to be clear, shoot for 11.8:1 just like gas.
01-19-2010, 02:03 AM
#60
Drifting
Thread Starter
Just wanted to update this and note that my turbo is actually one of John's new Stage 3R turbos. Still not anywhere close to being on the car, but I'm planning to buy V-Flex and Injectors during the Vitesse annual sale!