|
Author
|
Topic: Highest Octane with 5.0 efi
|
Blownhatch
¯
Member # 167
|
posted
 
 
What is the highest octane you can run in a 5.0 E.F.I system...
Posts: 427 | From: Protected Witness | Registered: Feb 2001
| :
|
|
FasterDamnit
Bad Attitude
Member # 442
|
posted
What for? Going to ad boost? Will run great on 87 (designed for it.) You can run higher octane but will not see any more power or mpg. Only reason to up the octane is if you are detonating.
--------------------
'92 LX T5
Looked stock, went 11's 11.90 at 115mph.
'65 Mustang 347
www.fordmuscle.com
Livin' in the Carolina Pines
Posts: 2971 | From: NorCal | Registered: Sep 2001
| :
|
|
Blownhatch
¯
Member # 167
|
posted
14# of boost 16degree timing.. looking to run some race gas in the tank but dont wont to blow up halfway down the track..
Posts: 427 | From: Protected Witness | Registered: Feb 2001
| :
|
|
BlackNGold
CaliforniaFords.com
Moderator
Member # 655
|
posted
The higher the ocatane rating the slower the gas burns...Don't worry you won't blow anything up...I believe the only thing you have to worry about is the lead in any fuel higher than 102 octane...The lead will fuck up your cats and O2's...
--------------------
-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
| :
|
|
66 AC COBRA
Nitrous King
Member # 904
|
posted
quote:
Originally posted by BlackNGold:
The higher the ocatane rating the slower the gas burns...Don't worry you won't blow anything up...I believe the only thing you have to worry about is the lead in any fuel higher than 102 octane...The lead will fuck up your cats and O2's...
![[patriot]](graemlins/patriot.gif)
--------------------
FFR AC Cobra
72 Vega - WCHRA Extreme 10.5
Posts: 6280 | From: Winters | Registered: Feb 2002
| :
|
|
TURLX50
¯
Member # 3928
|
posted
ive ran 105 with no cat and besides the beautiful smell i didnt notice much unless you advance timing..
Posts: 304 | From: WALNUT CREEK | Registered: Dec 2003
| :
|
|
hawaii5.0
¯
Member # 4675
|
posted
quote:
Originally posted by BlackNGold:
The higher the ocatane rating the slower the gas burns...Don't worry you won't blow anything up...I believe the only thing you have to worry about is the lead in any fuel higher than 102 octane...The lead will fuck up your cats and O2's...
SO DOES THAT MEAN I SHOULD GET BETTER GAS MILEAGE WITH 92 OCTANE THAN 87 OCTANE ON A STOCK 5.0?
--------------------
91LX (sold)
93 cobra #3279
Posts: 757 | From: here and there | Registered: Jul 2004
| :
|
|
illwill510
¯
Member # 3788
|
posted
i have experenced smoother ignition throught the powerban and overall better drivability when using 91 ocatne & octane boost. seems to be more power ![[burnout]](graemlins/burnout.gif)
Posts: 785 | From: Sacramento | Registered: Nov 2003
| :
|
|
Blue Oval
¯
Member # 2548
|
posted
quote:
Originally posted by hawaii5.0:
quote:
Originally posted by BlackNGold:
The higher the ocatane rating the slower the gas burns...Don't worry you won't blow anything up...I believe the only thing you have to worry about is the lead in any fuel higher than 102 octane...The lead will fuck up your cats and O2's...
SO DOES THAT MEAN I SHOULD GET BETTER GAS MILEAGE WITH 92 OCTANE THAN 87 OCTANE ON A STOCK 5.0?
no!
--------------------
65 Coupe 306, AFR's
89 Cali. Ed. Saleen "sold"
BAB 89 GT
08 Yamaha R6
Posts: 2345 | From: Sacramento | Registered: Mar 2003
| :
|
|
BlackNGold
CaliforniaFords.com
Moderator
Member # 655
|
posted
quote:
Originally posted by hawaii5.0:
quote:
Originally posted by BlackNGold:
The higher the ocatane rating the slower the gas burns...Don't worry you won't blow anything up...I believe the only thing you have to worry about is the lead in any fuel higher than 102 octane...The lead will fuck up your cats and O2's...
SO DOES THAT MEAN I SHOULD GET BETTER GAS MILEAGE WITH 92 OCTANE THAN 87 OCTANE ON A STOCK 5.0?
Please don't write in CAPS, it means you're yelling...
No, 91 octane burns slower and unless you have advanced your timming you really won't benefit from using a higher octane fuel...
For instance, on your average 5.0, if you're running 10 degrees timming and 87 octane you're probably safe and actually running close to detonating, but you're not actually detonating...
If you increased your timming a couple of degrees and still ran the 87 octane you would most likely detonate...
The most popular and free horse power upgrade on a 5.0 is advancing your timming...You get the most power when you find out the best position (normally around 14 degrees before top dead center) of where the piston in relationship to when the spark plug ignites on an engines power stroke....
Hawaii5.0~try this page...It has a lot of useful info... http://auto.howstuffworks.com/ignition-system1.htm
--------------------
-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
| :
|
|
Email this post to someone!
Printer friendly view of this Ford topic
