Gas mileage difference between FI and Carbs |
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Gas mileage difference between FI and Carbs |
86motoman |
Aug 10 2004, 04:16 PM
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#1
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Member Group: Members Posts: 200 Joined: 13-May 04 From: Walla Walla, WA Member No.: 2,064 |
I have a choice between dealing with a stock fuel injection (Djet?) and some carbs.
What would be the gas mileage difference. Right now I am getting about 25mpg highway with the carbs. Will I get any better with the FI? |
Cap'n Krusty |
Aug 10 2004, 04:24 PM
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#2
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
I dunno what kinda teener you have, but my old 71 got 41 average when it was used for long commutes, and in the mid 30s all the rest of the time. Is your rngine otherwise stock? Most of the 2 litre cars I've owned got in the high 20s and low 30s when driven even remotely sanely ............. The Cap'n
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redshift |
Aug 10 2004, 04:31 PM
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#3
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Bless the Hell out of you! Group: Members Posts: 10,926 Joined: 29-June 03 Member No.: 869 |
I get prolly 1/3 more miles out of a tank with injection, than I have with carbs.
M |
SirAndy |
Aug 10 2004, 04:32 PM
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#4
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Resident German Group: Admin Posts: 41,854 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
35mpg on my 1.8L with D-Jet.
i'll report back on the 2.1L with carbs as soon as i get it to run, but i suspect i can call myself lucky *if* i get 20mpg with it ... <_< Andy |
SirAndy |
Aug 10 2004, 04:33 PM
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#5
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Resident German Group: Admin Posts: 41,854 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(redshift @ Aug 10 2004, 03:31 PM) out of a tank with injection you have fuel-injection on your tank ? (IMG:style_emoticons/default/biggrin.gif) Andy |
redshift |
Aug 10 2004, 04:37 PM
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#6
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Bless the Hell out of you! Group: Members Posts: 10,926 Joined: 29-June 03 Member No.: 869 |
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86motoman |
Aug 10 2004, 07:01 PM
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#7
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Member Group: Members Posts: 200 Joined: 13-May 04 From: Walla Walla, WA Member No.: 2,064 |
Sounds like the djet should easily get 30+ mpg. Well worth trying to get the fuel injection to work right.
The car I will be driving is a 72. I don't even know what engine it is. |
lapuwali |
Aug 10 2004, 07:27 PM
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#8
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
There are some engine ID threads you can search for. It's very likely a 1.7, though.
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914forme |
Aug 10 2004, 07:45 PM
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#9
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Times a wastin', get wrenchin'! Group: Members Posts: 3,896 Joined: 24-July 04 From: Dayton, Ohio Member No.: 2,388 Region Association: None |
Wow 25 with carbs not bad, low 30s with a 2.0L and D-jet, my 6 actually does better, with mid 30s from it, running carbs. I had carbs on my 2.0L my Truck got better mileage. I was doing good to break into the 20s with it.
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markb |
Aug 10 2004, 08:26 PM
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#10
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914less :( Group: Members Posts: 5,449 Joined: 22-January 03 From: Nipomo, CA Member No.: 180 Region Association: Central California |
30+ with d-jet on a stock 72 1.7
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Jake Raby |
Aug 10 2004, 10:11 PM
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#11
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
My 912 with carbs, and the Kit Carlson EMS is running about the same, around 35ish if I hold steady throttle..
Hey Capn' better not let Alfred (IMG:style_emoticons/default/finger.gif) hear that you got 41MPG, he crucified me when I claimed 38MPG.... |
BatAc |
Aug 10 2004, 10:43 PM
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#12
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Member Group: Members Posts: 120 Joined: 9-July 04 From: seattle Member No.: 2,329 |
Well I'm on blocks right now. I have a '74 1.8 w/original FI. Let me ask what is the size of the gas tank so I can do a test when I'm up 'n' runnin'.
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Cap'n Krusty |
Aug 10 2004, 11:34 PM
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#13
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Hey, Jake! My car was as bone stock as they come, and the car did the I5 trip LA to Sacramento about 2 times a week. Teeners get their best mileage at about 75 in 5th, and that's where it was, hours at a time ............. The Cap'n
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BatAc |
Aug 10 2004, 11:39 PM
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#14
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Member Group: Members Posts: 120 Joined: 9-July 04 From: seattle Member No.: 2,329 |
I kinda second Caps opinion on this one. Just a while back I drove cross country 'n' she jus' wanted to be at 80 in 5th. Although my gas gauge would only read half full on fill up.
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morgan_harwell |
Aug 11 2004, 11:33 AM
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#15
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Ha! Finally snuck up on a camera! Group: Members Posts: 126 Joined: 28-January 03 From: Santa Cruz Mtns., Ca. Member No.: 203 Region Association: Northern California |
My 2.0L 4-banger with Webers got 19mpg(city), 35mpg(highway).
I replaced it with a 2.4L 6-banger to meet smog requirements. My 2.4L 6-banger with fuel injection gets 22mpg(city), 35mpg(highway). --Moe-- |
pbanders |
Aug 11 2004, 12:09 PM
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#16
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Senior Member Group: Members Posts: 939 Joined: 11-June 03 From: Phoenix, AZ Member No.: 805 |
It's hard to say what mileage you'd get, as motors vary a LOT in configuration. A stock 1.7L with D-Jet in good shape will get incredible mileage when driven at normal freeway speeds on flat roads, about 40 mpg. A 2.2L with 44IDF's, with big valves, worked head, hot cam, driven hard in the city will get 15 mpg.
As they say, YMMV.... |
Jake Raby |
Aug 11 2004, 01:26 PM
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#17
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Its all in the combo!!!
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J P Stein |
Aug 11 2004, 01:41 PM
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#18
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Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
Well, lessee...
I put in 4 gallons of primo. Drove over to PIR....bout 4-5 miles.....made ...14 AX passes @ .4 miles each. Drove home. I'll need 3 more gallons (IMG:style_emoticons/default/confused24.gif) |
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