 Gas?, what kind do you use |
|
|
|
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. |
|
|
| oldschool |
 Nov 6 2008, 12:17 AM
Post
#1
|
|
Advanced Member  Group: Members Posts: 3,362 Joined: 29-October 08 From: P-town Member No.: 9,705 Region Association: Southern California  |
since we drive old sports cars (70's) what kind of fuel do you run with your 914, and do you ad any thing with the gas (additives)
|
   |
 
|
  |
Replies(1 - 19)
| dw914er |
Nov 6 2008, 12:24 AM
Post
#2
|
|
Planning Cities Group: Members Posts: 2,364 Joined: 1-March 08 From: Yucaipa, CA Member No.: 8,763 Region Association: Southern California |
from what I understand, most additives dont do anything. But in either case, I don't use them.
as for gas, I typically run 91 octane. The type 4 should run on regular, but I've always had better results with the extra "kick" in the octane. not trying to hi-jack, but do you go to Cal Poly Pomona? |
|
|
|
| familienauto |
Nov 6 2008, 12:31 AM
Post
#3
|
|
Volksporsche Group: Members Posts: 136 Joined: 5-November 06 From: UW Seattle Member No.: 7,156 Region Association: Pacific Northwest |
I always run 91 octane premium. I don't really have any scientific reasoning to back it up.
*runs and hides* |
|
|
|
| oldschool |
Nov 6 2008, 12:32 AM
Post
#4
|
|
Advanced Member Group: Members Posts: 3,362 Joined: 29-October 08 From: P-town Member No.: 9,705 Region Association: Southern California |
QUOTE(dw914er @ Nov 5 2008, 10:24 PM)  from what I understand, most additives dont do anything. But in either case, I don't use them. as for gas, I typically run 91 octane. The type 4 should run on regular, but I've always had better results with the extra "kick" in the octane. not trying to hi-jack, but do you go to Cal Poly Pomona? |
|
|
|
| dw914er |
Nov 6 2008, 12:44 AM
Post
#5
|
|
Planning Cities Group: Members Posts: 2,364 Joined: 1-March 08 From: Yucaipa, CA Member No.: 8,763 Region Association: Southern California |
QUOTE(oldschool @ Nov 5 2008, 10:32 PM) QUOTE(dw914er @ Nov 5 2008, 10:24 PM) from what I understand, most additives dont do anything. But in either case, I don't use them. as for gas, I typically run 91 octane. The type 4 should run on regular, but I've always had better results with the extra "kick" in the octane. not trying to hi-jack, but do you go to Cal Poly Pomona? oh, ok. I might transfer from Cal Poly SLO to Pomona, so thats why I asked. anyways |
|
|
|
| turnaround89 |
Nov 6 2008, 01:12 AM
Post
#6
|
|
Senior Member Group: Members Posts: 671 Joined: 17-May 08 From: Rockford, Illinois Member No.: 9,067 Region Association: Upper MidWest |
I haven't had any issues with Mobile and there 89 octane, works great. I wouldn't run anything lower than that though, some places sell 87 which won't go in the car.
|
|
|
|
| PeeGreen 914 |
Nov 6 2008, 01:27 AM
Post
#7
|
|
Just when you think you're done...wait, there is more..lol Group: Members Posts: 10,219 Joined: 21-September 06 From: Seattle, WA... actually Everett Member No.: 6,884 Region Association: Pacific Northwest 
|
50/50 mix of 110 leaded and 91 spreme or sometimes just 110. (IMG:style_emoticons/default/piratenanner.gif)
|
|
|
|
| degreeoff |
Nov 6 2008, 06:05 AM
Post
#8
|
|
I like big butts and I can not lie! Group: Members Posts: 1,622 Joined: 9-February 03 From: Booowieeee MD (near DC) Member No.: 275 Region Association: MidAtlantic Region |
93 here...though I have been told to use race gas.....where aside from a track do you get race gas? I wonder if I could use 100LL avgas?
|
|
|
|
| toddb67 |
Nov 6 2008, 06:48 AM
Post
#9
|
|
Newbie Group: Members Posts: 29 Joined: 22-May 08 From: Hansville, WA Member No.: 9,087 Region Association: Pacific Northwest |
Unless you are running a modified engine with high compression or turbo you do not need anything higher than 87 octane. The stock engines were designed to run on regular 87 octane fuel. But if it makes you feel better go ahead and run the higher octane, personally I won't be wasting my money on it and my car runs just fine.
|
|
|
|
| Michael N |
Nov 6 2008, 08:02 AM
Post
#10
|
|
Certifiable Group: Members Posts: 1,426 Joined: 6-June 04 From: San Jose, Ca Member No.: 2,164 Region Association: Northern California |
I run 87 unless I am going autocrossing then I run the 91. I feel that why chance it with 87 when autocrossing. Hell, I am so slow I need every bit of help I can get. (IMG:style_emoticons/default/confused24.gif)
|
|
|
|
| toddb67 |
Nov 6 2008, 09:07 AM
Post
#11
|
|
Newbie Group: Members Posts: 29 Joined: 22-May 08 From: Hansville, WA Member No.: 9,087 Region Association: Pacific Northwest |
There are a lot of common misconceptions about octane ratings. Here are a few facts about gasoline from the Minnesota dept. of commerce.
High octane gasoline burns slower than low octane gasoline. The slow burn prevents engine knock when cylinder pressures are high. •If your engine runs well and does not knock or ping on low octane gasoline, there is no advantage in switching to higher octane gasoline. Food for thought... |
|
|
|
| Dave_Darling |
Nov 6 2008, 09:15 AM
Post
#12
|
|
914 Idiot Group: Members Posts: 14,990 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
|
QUOTE(degreeoff @ Nov 6 2008, 04:05 AM) 93 here...though I have been told to use race gas.....where aside from a track do you get race gas? I wonder if I could use 100LL avgas? Google for race gas, there are a number of stations that carry it. I know of a couple here in the South SF Bay Area. That's in addition to the filling station at most tracks, of course. (Even more $$$ there, though.) Don't use 100LL. It's only "low lead" when compared to older avgas; it still has enough to foul your plugs relatively easy. --DD |
|
|
|
| jd74914 |
Nov 6 2008, 09:22 AM
Post
#13
|
|
Its alive Group: Members Posts: 4,780 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
I use whatever 87 octance is cheapest when I need to fill-up. (IMG:style_emoticons/default/laugh.gif)
The funny thing is that I have friend who won't put non top-tier brand gas in their cars, and the only time I've had trouble was a day over the summer when I got diluted gas from a Mobile near where I work. When I drained the tank there was a ton of water at the bottom of the bucket. Needless to say I poured it back in leaving the water in the bucket. (IMG:style_emoticons/default/laugh.gif) |
|
|
|
| ericread |
Nov 6 2008, 10:27 AM
Post
#14
|
|
The Viper Blue 914 Group: Members Posts: 2,177 Joined: 7-December 07 From: Irvine, CA (The OC) Member No.: 8,432 Region Association: Southern California |
Do a search on "Octane". The octane rating of gasoline tells you how much the fuel can be compressed before it spontaneously ignites. When gas ignites by compression rather than because of the spark from the spark plug, it causes knocking in the engine (pre-ignition).
The high Octane gas is primarily for high compression engines, and is used to ensure the fuel doesn't fire too early (pre-ignition). With our low compresion engines, there should be no need to use a higher Octane fuel. If your engine isn't pre-ignighting (knocking), then the higher Octane gas is probably just a waste. I use "regular" 87 Octane gas on my stock '74 2.0L and it runs just fine Eric Read |
|
|
|
| IronHillRestorations |
Nov 6 2008, 06:12 PM
Post
#15
|
|
I. I. R. C. Group: Members Posts: 6,722 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None
|
Run the lowest octane you can without pre-ignition (pinging). Running high octane for no good reason only results in carbon build up in the combustion chamber.
|
|
|
|
| Joe Ricard |
Nov 6 2008, 06:45 PM
Post
#16
|
|
CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Yup not very smart to run 87 normally and then 91 for autocross.
Youare losing power with the higher octane. |
|
|
|
| jimtab |
Nov 7 2008, 12:08 AM
Post
#17
|
|
Advanced Member Group: Members Posts: 3,477 Joined: 5-January 03 From: Pacifica, California Member No.: 91 Region Association: Northern California |
I used the cheapest regular in 1973, and I use the same now....all my cars were fine with it, except the 2.7 twin plug....
|
|
|
|
| markb |
Nov 7 2008, 12:55 AM
Post
#18
|
|
914less :( Group: Members Posts: 5,449 Joined: 22-January 03 From: Nipomo, CA Member No.: 180 Region Association: Central California
|
QUOTE(toddb67 @ Nov 6 2008, 04:48 AM) Unless you are running a modified engine with high compression or turbo you do not need anything higher than 87 octane. The stock engines were designed to run on regular 87 octane fuel. But if it makes you feel better go ahead and run the higher octane, personally I won't be wasting my money on it and my car runs just fine. (IMG:style_emoticons/default/agree.gif) |
|
|
|
| robby750 |
Nov 8 2008, 08:44 PM
Post
#19
|
|
Senior Member Group: Members Posts: 646 Joined: 6-April 03 From: Lexington, Ky Member No.: 521 Region Association: South East States |
By the way, bought a tankful of 87 octane yesterday for..... $1.79 per gallon!!!
|
|
|
|
| oldschool |
Nov 8 2008, 10:38 PM
Post
#20
|
|
Advanced Member Group: Members Posts: 3,362 Joined: 29-October 08 From: P-town Member No.: 9,705 Region Association: Southern California |
can i just add 87 after i pimp 91?I have a 1/4 of the 91 in the tank? (IMG:style_emoticons/default/chair.gif)
|
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 26th May 2024 - 01:46 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.