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Old 01-25-2014, 03:23 AM   #87
cory d
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Join Date: Dec 2011
Location: Arlington WA
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Re: Automotive myths

Quote:
Originally Posted by leddzepp View Post
There might be some truth to it. My fil used to get 35 mpg in his 78 civic.
Quote:
Originally Posted by theastronaut View Post
My '64 VW gets 36.25 highway mileage (60-65 mph) running around 16.5:1 air/fuel ratio, and that's with E10 gas/ethanol blend. Engines won't won't run any leaner than that and still be driveable. No way any engine can run lean enough to get 100+ mpg on a normal car from just changing the carb; the spark won't ignite, or burn fast enough if it does ignite. It gets difficult to ignite over 17:1 AFR. Leaner mixes burn slower, you have to add timing advance to even run 16-17:1.
my friends first gen accourd gets 35 at its worst, maybe 50 when cruising, its a 1.8 i think, 340k on it. funny how VW's and hondas were getting 40+ mpg...........30+ years ago
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