Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> Gas Mileage, What are you getting, city/highway?
pbanders
post Oct 17 2016, 08:47 PM
Post #1


Senior Member
***

Group: Members
Posts: 939
Joined: 11-June 03
From: Phoenix, AZ
Member No.: 805
Yes, it's been done before, but how about an update? I'll go first:

1970 914 w/'74-spec 2.0L D-Jetronic, stock w/Euro pistons, Crane XR-3000 ignition and Crane coil. City: 24 mpg / Highway: 39 mpg (flat road, 75 mph, 80 mile trip)

What are you getting? The 914's a lot better than my '03 Boxster.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
 Reply to this topicStart new topic
Replies(1 - 15)
Coondog
post Oct 17 2016, 09:31 PM
Post #2


Advanced Member
****

Group: Members
Posts: 2,089
Joined: 24-September 15
From: Apple Valley Calif
Member No.: 19,195
Region Association: Southern California
Drove from Phoenix to Apple Valley, Ca. Used 3/4 tank, never really been that gas mileage guy unless I am driving my motorhome then I try to squeeze 9-10 miles per gallon.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
pbanders
post Oct 17 2016, 09:36 PM
Post #3


Senior Member
***

Group: Members
Posts: 939
Joined: 11-June 03
From: Phoenix, AZ
Member No.: 805
QUOTE(Coondog @ Oct 17 2016, 08:31 PM) *

Drove from Phoenix to Apple Valley, Ca. Used 3/4 tank, never really been that gas mileage guy unless I am driving my motorhome then I try to squeeze 9-10 miles per gallon.


According to Google, 353.2 miles. 16.4 gal tank with 2 gal reserve -> 14.4 * 0.75 = 10.8 gal, which works out to 32.7 mpg, pretty good!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
cali914
post Oct 17 2016, 09:54 PM
Post #4


cali914
**

Group: Members
Posts: 447
Joined: 26-April 06
From: Berkeley Ca.
Member No.: 5,934
Region Association: Northern California
18 city 25 highway v6 honda engine
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
SirAndy
post Oct 17 2016, 10:57 PM
Post #5


Resident German
*************************

Group: Admin
Posts: 41,679
Joined: 21-January 03
From: Oakland, Kalifornia
Member No.: 179
Region Association: Northern California
QUOTE(pbanders @ Oct 17 2016, 07:47 PM) *
Gas Mileage, What are you getting, city/highway?

1970 914 with a '95 993 3.6L engine

Highway: ~25 mpg
City: ~20 mph
Track: ~5 mpg

(IMG:style_emoticons/default/driving.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914_teener
post Oct 18 2016, 12:13 AM
Post #6


914 Guru
*****

Group: Members
Posts: 5,205
Joined: 31-August 08
From: So. Cal
Member No.: 9,489
Region Association: Southern California
Spec 1.7 205-60 tires D- jet

City 28

Highway 39


I've been trying to kill this engine for years and it just keeps going and going.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Porschef
post Oct 18 2016, 04:07 AM
Post #7


How you doin'
****

Group: Members
Posts: 2,165
Joined: 7-September 10
From: LawnGuyland
Member No.: 12,152
Region Association: North East States
Good question. I'd like to figure out what's keeping mine down, other than my right foot. Top off, maybe 24 at best on the hwy, less locally.

2056, 9550 cam, Ljet, 9:1 comp, 13:1 AFR... (IMG:style_emoticons/default/confused24.gif)

User is offlineProfile CardPM
Go to the top of the page
+Quote Post
BeatNavy
post Oct 18 2016, 04:18 AM
Post #8


Certified Professional Scapegoat
****

Group: Members
Posts: 2,924
Joined: 26-February 14
From: Easton, MD
Member No.: 17,042
Region Association: MidAtlantic Region
QUOTE(Porschef @ Oct 18 2016, 06:07 AM) *

Good question. I'd like to figure out what's keeping mine down, other than my right foot. Top off, maybe 24 at best on the hwy, less locally.

2056, 9550 cam, Ljet, 9:1 comp, 13:1 AFR... (IMG:style_emoticons/default/confused24.gif)

I'm kind of in the same boat. To and from work (90% of my driving) I'm lucky to get 20 mpg. That's "parkway" driving where it's 60 mph for a mile or two and then stop for the light. Rinse and repeat. I probably got more like 25 mpg up and back to Hershey, the longest continuous trip I've taken it on.

2056 with stock cam and I might be slightly rich at warm up (using the CHT spacer) but AFR readings are slightly lean, if anything, after that. The only working theories I have now on what may be keeping my mileage down, other than possibly the CHT spacer and the nature of my driving, is my battery has been flaky the last couple of months due to a parasitic drain on it. I'm certain a weak battery doesn't help mileage or performance, but otherwise I'm not sure if I should be doing significantly better or if "it is what it is." I read about you all getting 30+ mpg.... (IMG:style_emoticons/default/confused24.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bleyseng
post Oct 18 2016, 08:09 AM
Post #9


Aircooled Baby!
**********

Group: Members
Posts: 13,035
Joined: 27-December 02
From: Seattle, Washington (for now)
Member No.: 24
Region Association: Pacific Northwest
22 city and 27-30 highway
2056 w/9550 cam 9to1CR
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DRPHIL914
post Oct 18 2016, 08:28 AM
Post #10


Dr. Phil
*****

Group: Members
Posts: 5,768
Joined: 9-December 09
From: Bluffton, SC
Member No.: 11,106
Region Association: South East States
Stock 75 2.0 d-jet with back dated SS HE and triad exhaust,
usually 25-6 around town straight city, 29-30 combined, and last trip was octeenerfest and we averaged about 33-35 MPG for the trip(some mountain road driving. and I was running a bit rich so I feel like I could get a bit better for straight freeway driving closer to the speed limit, no mountains, im going to to another test here soon before pulling it off the road to paint, I'm going to drive to work for a while, which is a 25 mile commute, mostly 65mph highway with a few miles of city driving, - I will post my results on the next tank.

Dr. Phil
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Porschef
post Oct 18 2016, 09:56 AM
Post #11


How you doin'
****

Group: Members
Posts: 2,165
Joined: 7-September 10
From: LawnGuyland
Member No.: 12,152
Region Association: North East States
Rob, I also feel that my dizzy/voltage could be a factor; I've never dismantled the distributor and its history is unknown to me. The Ljet system was complete and in pretty good shape when I got it, injectors aside. They needed rebuilding. So maybe the round thing under the cap and rotor needs going through.

Geoff, mines the same. Although every time I read your signature I see L jet... (IMG:style_emoticons/default/blink.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JustinMeier
post Oct 18 2016, 01:06 PM
Post #12


Member
**

Group: Members
Posts: 244
Joined: 3-August 16
From: Scottsdale
Member No.: 20,258
Region Association: None
2.7 going to RRC I was getting about 24 highway.. 75-80, around 3-4k rpm.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sb914
post Oct 18 2016, 01:33 PM
Post #13


Surf Guru
****

Group: Members
Posts: 4,316
Joined: 25-November 12
From: Brookings,Oregon
Member No.: 15,191
Region Association: Southern California
About 8 miles per gallon, and I don't give a Fuch! (IMG:style_emoticons/default/beer3.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Chris914n6
post Oct 18 2016, 08:44 PM
Post #14


Jackstands are my life.
****

Group: Members
Posts: 3,338
Joined: 14-March 03
From: Las Vegas, NV
Member No.: 431
Region Association: Southwest Region
24/29 with the 3.0 Nissan
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
bandjoey
post Oct 18 2016, 09:01 PM
Post #15


bandjoey
****

Group: Members
Posts: 4,926
Joined: 26-September 07
From: Bedford Tx
Member No.: 8,156
Region Association: Southwest Region
2.0 stock other than carbs

190 mile highway trip

30.3 mpg
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mankowski
post Oct 18 2016, 10:51 PM
Post #16


Member
**

Group: Members
Posts: 128
Joined: 7-February 10
From: Portland, Oregon
Member No.: 11,335
Region Association: Pacific Northwest
Stock 1.7, Djet. Average: 23 MPG. Range: 15-30 MPG, with lots of variation. I've spent a lot of time trying to figure this out. I even correlated the number of days between refills and MPG for the tank across several thousand miles. My thinking was that gas was evaporating through the broken vacuum lines running from the fan to the charcoal canister, or some other unknown leak. Correlation was -.35 (more days between tanks = lower gas mileage). It's time to get those lines repaired and check again.

Any other ideas?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Switch to: Standard · Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 10th June 2024 - 03:17 AM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...