Redwood Chair
- Stock PSI Or Bust -
- Joined
- Mar 23, 2007
- Location
- Ocean Beach S.F.
Sounds like more fairy tales to me.
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So, are you making a general statement
That has NOTHING to do with a b23 vs b230. Nothing.
And increased the internal efficiency of the motor, which does increase fuel efficiency.
So, are you making a general statement pulled out of your butt based on things you've read about fuel efficiency in general on the internet, or are you stating a fact that the 10.3:1 b23 will get better gas mileage than a 9.8:1 b230 with the exact same car/trans/engine management, etc.?
This is
Agreed, just wanted to see if he had any facts in him instead of all the other stuff from the internet. Thread is full of generalizations, which are not necessarily bad, but you can't say one engine is better than the other without backing it up. There is not going to be a test in a magazine that exactly says one way or another as they aren't testing the exact same car/drivetrain/management configuration with the only difference being the block.This is what he does.
Just the facts -
For those staying in touch with "what's happening"
Thanks, I don't know how I could stay in touch in this fast changing world without your superior google-fu skills.
but you can't say one engine is better than the other without backing it up.
I agree with the first part, completely. I disagree that turbobrickers are only about varoom power and not for fuel economy. I do also agree that lower compression is less efficient than the EXACT same thing that has higher compression.All you need is two new/rebuilt engines, and a Dynometer.
[...]
More pressure means more potential work; I'm sure the turbobrickers are fully aware of that But turbobrickers are about the varoom power, not for fuel economy; some of the newer engines use turbos for fuel economy gains these days.
Or, just ask the professor in regards to changes in compression ratios; I'm sure he will agree, when CR is reduced, so does an engine's fuel efficiency decrease.
Problem is when humans review engines, they may twist the reality (advertising hype); but when scientific methods are used (dynometer/fuel flow), then we have reliable data, not influenced by a driver's foot, and motor-mouth.
A b230F(9.8:1) has less compression than a 10.3:1 rated b23F, FACT.
Their press release so indicates, just like they state "there is no reduction in engine durability in spite of the lighter components,"A b230F has less rotating and internal friction than a b23F,FACT.
If better fuel mileage existed, would Volvo "toot" their horn?Which gets better gas mileage in the exact same circumstance?
Talking to him....
Empirical evidence
Their press release so indicates, just like they state "there is no reduction in engine durability in spite of the lighter components,"
but I'll take a B23F over B230F
Assumed to be true...I have not verified.
If better fuel mileage existed, would Volvo "toot" their horn?
Please read these two press releases, and quote where they talk about a difference in fuel savings. Can you cite any Volvo literature where they "toot" their horn about fuel savings with introduction of B230F?
1. FOR 1985 VOLVO FEATURES NEW MODELS AND NEW ENGINES
2. A NEW ENGINE DYNASTY FROM VOLVO
Do remember, 1984 had LH 2.1 and 1985-1989 had LH 2.2
Footnote - 1993-245-NA: Upgraded to Gen-III Bosch 0 280 155 746 - 200cc/min @ 3bar injectors last Sunday; driving around 40-55 mph on rural highways with a pinch of city miles, 79-miles total with 2.7-gallons (filled up), vehicle got 29.25-MPG and using GPS based mileage. Need more miles to evaluate, but point is both vehicles would have to have same electronics, etc.
Thanks for the tidbits but that's not even 30mpg, the thread title is 35+..
OP discriminated against vehicles with automatics, AW70 in this case.
Besides, Eco-Bricks don't look like this: not ecologically healthy.
But, a high compression engine has its drawbacks, too. ,