Is Premium Gas ok? - Page 3 - Focus Fanatics
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace



Go Back   Focus Fanatics > Ford Focus First Generation > DURATEC Performance (2003-2007)

DURATEC Performance (2003-2007) The place to chat about any Duratec 23, 23E, and 20 engine performance, tuning and exhaust related upgrades.

Search This Forum | Image Search | Advanced Search    
FocusFest Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 04-15-2013, 05:10 PM   #21
felixthecat
Focus Fanatic
 
felixthecat's Avatar
 
Join Date: Nov 2010
Fan#: 80663
Location: Renton, WA
What I Drive: '05 Silver Sport Technologies

Posts: 8,018
FF Reputation: 52 felixthecat Great Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by dooor View Post
Felix, Help a dummy. What is "do a bsd"? Thanks
No dummy's here, We're all here to learn. BSD= Balance shaft delete. 23's/25's have a pr of balance shafts in the bottom of motor, which is driven off the crank, to smooth out the motor. The 23/25's having a longer stroke. You have a '07 zx3, so that means you have a 20 motor, so you don't have to deal w/ that, till you install a 23. It removes rotational & static weight, which makes the motor more responsive.
__________________
Introduce Mr. Torsen to the mix D23 crew- D-Tech- Sedan Revolution= #131
felixthecat is offline  
    Reply With Quote
Sponsored Links
Advertisement
 
Old 04-17-2013, 01:57 PM   #22
dooor
Focus Enthusiast
 
Join Date: Nov 2007
Fan#: 51395
Location: Bakersfield, Ca., United States
What I Drive: 2007 se stick

Posts: 144
FF Reputation: 1 dooor Good Standing Member
Buy-Sell-Trade Rating: (0)
Thanks
dooor is offline  
    Reply With Quote
Old 04-17-2013, 04:54 PM   #23
metrognome
Focus Jr. Enthusiast
 
Join Date: Mar 2013
Fan#: 112081
Location: Milwaukie, OR
What I Drive: 2007 Silver ZX3 SE

Posts: 32
FF Reputation: 5 metrognome Good Standing Member
Buy-Sell-Trade Rating: (0)
From wikipedia: http://en.wikipedia.org/wiki/Octane_rating

<Octane ratings are not indicators of the energy content of fuels. (See section 4 of this page and heating value). It is only a measure of the fuel's tendency to burn in a controlled manner, rather than exploding in an uncontrolled manner. Where the octane number is raised by blending in ethanol, energy content per volume is reduced. >

<Many high-performance engines are designed to operate with a high maximum compression, and thus demand fuels of higher octane. A common misconception is that power output or fuel efficiency can be improved by burning fuel of higher octane than that specified by the engine manufacturer. The power output of an engine depends in part on the energy density of the fuel being burnt. Fuels of different octane ratings may have similar densities, but because switching to a higher octane fuel does not add more hydrocarbon content or oxygen, the engine cannot develop more power.>

Totally amazing about gas. Draw a 1/2 inch square and with the tip of the pencil, place 15 'dots' inside the square. One of those dots is gas. The rest (approximately) are air. That's the mixture feeding a cylinder each cycle.

Run the lower octane and trust the anti-knock sensor. Unless you are running a modified engine with high compression pistons or you have an air pump (compressor).

btw, I read that Chevron gets from 'the top' at the refinery, which is a finer and cleaner blend, with less contaminants that are found in 'the dregs' that other brands get out of the same batch.
Techron will keep the injector nozzles clean.
I have no commercial connection, just years working as a mechanic on small engines that have carburetors with main jet orifices so small that a piece of hair blocks half the fuel delivery to the cylinder.
If you can buy gas with no ethanol that would be best power and mileage.
metrognome is offline  
    Reply With Quote
Old 04-17-2013, 05:23 PM   #24
dyn085
That Guy
 
dyn085's Avatar
 
Join Date: Apr 2012
Fan#: 98047
Location: Fayetteville, NC
What I Drive: 2014 FiST/FoST

Posts: 11,894
FF Reputation: 46 dyn085 Great Standing Member
Buy-Sell-Trade Rating: (5)
I didn't pay attention to Tapatalk, or I would have realized that my discussion is invalid because I own a different generation Focus.

Carry on
__________________

FocusFest 2013: Best of Show
Gateway FFW: Show Class Outstanding
September '13 ROTM
2014 FiST-

Last edited by dyn085; 05-03-2013 at 11:10 AM.
dyn085 is online now  
    Reply With Quote
Old 05-02-2013, 08:18 PM   #25
jugglethese
Focus Enthusiast
 
jugglethese's Avatar
 
Join Date: Jan 2013
Fan#: 108852
Location: Ontario, Canada
What I Drive: 2007 focus gloss black SAP zx3

Posts: 229
FF Reputation: 1 jugglethese Good Standing Member
Buy-Sell-Trade Rating: (0)
Just to add, i asked tom to give me a 91 octane tune. He said theres no point it wouldnt do anything for my car, untill i did more upgrades. I have a header, cai, cat back.
So i guess you need some head work and some appropriate pistons.
jugglethese is offline  
    Reply With Quote
Old 05-03-2013, 10:25 AM   #26
felixthecat
Focus Fanatic
 
felixthecat's Avatar
 
Join Date: Nov 2010
Fan#: 80663
Location: Renton, WA
What I Drive: '05 Silver Sport Technologies

Posts: 8,018
FF Reputation: 52 felixthecat Great Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by jugglethese View Post
Just to add, i asked tom to give me a 91 octane tune. He said theres no point it wouldnt do anything for my car, untill i did more upgrades. I have a header, cai, cat back.
So i guess you need some head work and some appropriate pistons.
A logical upgrade would be a 23 motor or turbo yours.
__________________
Introduce Mr. Torsen to the mix D23 crew- D-Tech- Sedan Revolution= #131
felixthecat is offline  
    Reply With Quote
Old 05-03-2013, 10:34 AM   #27
RonMaiden
Focus Fanatic
 
RonMaiden's Avatar
 
Join Date: May 2012
Fan#: 99230
Location: Littleton, CO
What I Drive: 2012 Red Candy Metallic Hatch SE

Posts: 3,930
FF Reputation: 6 RonMaiden Good Standing Member
Buy-Sell-Trade Rating: (0)
More power with higher octane? Are we talking power like you'd see a diff in the 1/4 mile using 93 vs 87? Or is it just a tad better throttle response and smoother power delivery? MotorTrend turned a 15.8 with a SE equipped with a 5 speed and 87 octane and that's one of the quicker numbers I've seen turned with a stock MK3.
__________________
'12 Focus Red Candy SE Sport 5 spd
'99 Toyota 4Runner Sport
'11 Subaru WRX STI Hatch
RonMaiden is offline  
    Reply With Quote
Old 05-03-2013, 10:57 AM   #28
replica81
Focus Addict
 
replica81's Avatar
 
Join Date: Aug 2011
Fan#: 88615
Location: Seattle, WA
What I Drive: 05 ST

Posts: 1,241
FF Reputation: 3 replica81 Good Standing Member
Buy-Sell-Trade Rating: (1)
Quote:
Originally Posted by jugglethese View Post
Just to add, i asked tom to give me a 91 octane tune. He said theres no point it wouldnt do anything for my car, untill i did more upgrades. I have a header, cai, cat back.
So i guess you need some head work and some appropriate pistons.
That's odd.

Higher octane raises the detonation threshold of the motor. Meaning, there should be room to advance the timing and other ECU controlled stuff. Maybe Tom will post in here and explain this further?
__________________
SR #272
Beer and Metal.
replica81 is online now  
    Reply With Quote
Old 05-03-2013, 12:58 PM   #29
jugglethese
Focus Enthusiast
 
jugglethese's Avatar
 
Join Date: Jan 2013
Fan#: 108852
Location: Ontario, Canada
What I Drive: 2007 focus gloss black SAP zx3

Posts: 229
FF Reputation: 1 jugglethese Good Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by felixthecat View Post
A logical upgrade would be a 23 motor or turbo yours.
haha if i come across one ill pick it up, ive been looking but nothing cheap enough yet ;)
jugglethese is offline  
    Reply With Quote
Old 05-03-2013, 01:03 PM   #30
jugglethese
Focus Enthusiast
 
jugglethese's Avatar
 
Join Date: Jan 2013
Fan#: 108852
Location: Ontario, Canada
What I Drive: 2007 focus gloss black SAP zx3

Posts: 229
FF Reputation: 1 jugglethese Good Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by replica81 View Post
That's odd.

Higher octane raises the detonation threshold of the motor. Meaning, there should be room to advance the timing and other ECU controlled stuff. Maybe Tom will post in here and explain this further?
yeah i would like to know myself, because i thought it might open up a couple more pony's. but the way my friends dad explained its burns colder and prevents misfires. nothing much to gain from it, untill you get work done to the engine that requires it. but even then its not the gas thats gonna get that extra power, its the parts you just put in.
He could be compleatly wrong and so could I.
If someone knows better let us know :)
jugglethese is offline  
    Reply With Quote
Reply

Bookmarks & Social Networks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 07:10 PM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information : Site Map

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Acura TLX or Fiesta ST. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.