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Old 12-13-2014, 06:08 AM   #21 (permalink)
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I've wanted a CRX for a long time but all the ones I've looked at gave me the impression many busy little unskilled hands had been working their "magic" over every square inch of the poor cars over the years.

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Old 12-13-2014, 11:51 AM   #22 (permalink)
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plus a supercharger to round it off....(If the math holds true to real life it will also be much more efficient if I keep my foot out of it)
Usually blowers and better MPG are inverse relationships. If you somehow find you get better MPG with one you are lucky. It's going to take A LOT of discipline to keep your foot out of the gas when you finish the project.

I say, buy a beater with the money you plan on spending on the engine, then with the money you save in gas bills, buy the parts and take your time building the engine. Most people with heavily modded vehicles NEED a beater for when the race car is down for service or just broken. Plus, once you put all that money into the truck and make that much power, you aren't going to want to drive it in bad weather due to how much trucks like to get sideways once a couple drops of rain fall...

I just picked up my Focus for $1,100 and doesn't seem to need any major work. Drove my Saturn for 100k miles and bought it for $1,500 and all it needed was basic maintenance and a couple replacement parts. If you don't like CL for finding cars, go to lots and look in the back of the lot, that's where they usually keep the cheap ones.
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2007 Ford Focus ZX5 - 91k - SGII, pending upper and lower grill bocks - auto trans
1987 Monte Carlo SS - 5.3/4L80E swap - 13.67 @ 106
2007 Ford Focus Estate - 230k - 33mpg - Retired 4/2018
1995 Saturn SL2 - 256K miles - 44mpg - Retired 9/2014

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Old 12-13-2014, 06:53 PM   #23 (permalink)
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spaceman- Yeah that's what I was kinda thinking too, when the engine is out I'm gonna need a 2nd car anyway and people here seem to be recommending Hondas (I like those). As far as the engine build is concerned you are right, If I for any reason put my foot down the gas is going to burn fast enough to watch on the gauge.....however the engine "should" be about 75% more efficient than stock due to the crappy stock CR and bad bad BAD fuel management.
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Old 12-13-2014, 07:07 PM   #24 (permalink)
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Ah yes, the good ole watch the gauge drop on your truck. Most commonly seen when truckers are speeding through traffic going 85+ constantly braking and accelerating again.

The car doesn't specifically have to be a Honda, but they are very common cheap cars. They last a long time though, and don't give too much headache.
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Old 12-13-2014, 08:04 PM   #25 (permalink)
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Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,585
Thanked 3,555 Times in 2,218 Posts
Quote:
.....however the engine "should" be about 75% more efficient than stock due to the crappy stock CR and bad bad BAD fuel management.
Maybe you should rethink that claim...
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Old 12-13-2014, 08:55 PM   #26 (permalink)
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75% per unit of fuel used.........you know, volumetric eff ratio? The engine stock has a much too low CR, wasteful cam, bad injectors (one hole instead of four) and an intake manifold that doesn't atomize fuel well. All these thing are going to be adressed with my project so the engine will use the fuel its given much more thourghly than it is right now
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Old 12-13-2014, 10:26 PM   #27 (permalink)
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Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
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Those OEM boys must be dumber than a box of rocks then.
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Old 12-13-2014, 10:54 PM   #28 (permalink)
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Those OEM boys must be dumber than a box of rocks then.
Well that's a little extreme. OEM tends to leave some room on the table on a lot of engines, but they do so for the sake of reliability and durability. If stock intakes had the best flow, there wouldn't be a reason for the aftermarket. Same for exhaust manifolds vs headers. Granted, most of these "better" units are for the purpose of making more power, but the theory is still that an engine that breathes easier will burn less gas. And diesel programmers are able to make lots more power with computer tuning and nothing else; whether or not that comes at the cost of reliabilty is not something I can comment on.
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2007 Ford Focus ZX5 - 91k - SGII, pending upper and lower grill bocks - auto trans
1987 Monte Carlo SS - 5.3/4L80E swap - 13.67 @ 106
2007 Ford Focus Estate - 230k - 33mpg - Retired 4/2018
1995 Saturn SL2 - 256K miles - 44mpg - Retired 9/2014

Cost to Operate Spreadsheet for "The New Focus"

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Old 12-13-2014, 11:31 PM   #29 (permalink)
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Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,762

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,585
Thanked 3,555 Times in 2,218 Posts
"75% more efficient"- is that like making 525HP vs 300HP on the same amount of fuel?
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Old 12-13-2014, 11:36 PM   #30 (permalink)
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yes......thats almost the exact amount it will go up in fact

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