Back from the dyno n/a
Senior Member
Joined: May 2003
Posts: 438
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From: Maryland
Originally posted by ilike2eatricers
but running higher than 87 octane on a na fc could hurt your performance unless your car was tuned for higher octane.
but running higher than 87 octane on a na fc could hurt your performance unless your car was tuned for higher octane.
whaaaa.....i have a '86 N/A and your telling me im not even helping buy buying 93 pump gas???
:edit:
well i tell ya im gonna start savin' my self a $#!7 load of money!...ok $0.12 a gal but still
Last edited by jester1341; Sep 6, 2003 at 11:19 AM.
Wait................What?
Joined: Apr 2003
Posts: 521
Likes: 0
From: Raleigh/Cary, NC - USA
Originally posted by Kim
I made 161fwhp and 143 rwhp with no emissions, ps or ac the 5/6th port BUTTERFLIES works and i have a header and resonators, K&N in homemade coldairbox.
Ive marked the line because the original printout sucked bigtime...And yes I know the HP line is kindda wrong but the marking isnt superexactly(got a little far)
Torque is in NewtonMeters which is metric
I have no clue how to get it into PoundsSquareFoot...
I made 161fwhp and 143 rwhp with no emissions, ps or ac the 5/6th port BUTTERFLIES works and i have a header and resonators, K&N in homemade coldairbox.
Ive marked the line because the original printout sucked bigtime...And yes I know the HP line is kindda wrong but the marking isnt superexactly(got a little far)
Torque is in NewtonMeters which is metric
I have no clue how to get it into PoundsSquareFoot...This is a program I found a while ago.... ALL kinds of conversions... everything from distance, computer stuff (bytes etc) speed etc etc, and feature for custom conversions...
http://www.joshmadison.com/software/convert/convert.zip
Enjoy
P.S.
186.6 Nm = 124.3528 ft lbs.
Last edited by poor_red_neck; Sep 7, 2003 at 01:28 AM.
Wait................What?
Joined: Apr 2003
Posts: 521
Likes: 0
From: Raleigh/Cary, NC - USA
Originally posted by hypntyz7
Octane, contrary to popular belief, is not a measure of power output, but a measure of volatility, or resistance to detonation. Detonation (ping, preignition) occurs because fuel burns too quickly/wildly for the engine/conditions. Lower octane burns faster, produces more power, but is more likely to ping. IN a nonturbo, conditions are nowhere near favorable for detonation, so the lowest octane you can find will produce the most power.
IN a turbo, supercharged, or high compression nonturbo engine (10:1 or higher), you commonly see higher octane requirements because of the setup and nature of the engine. They make much more power than a normal nonturbo engine, but they only hold together because of higher octane use. IF they used lower octane in such an engine, the power output would go even farther up, but the engine wouldnt hold together long.
This is why the notion of putting race gas into a honda or other lightly modified street car is so silly. You have kids that spend $50 on a tankful of 100-110 octane race gas to give their car the edge on the street. In reality they've just made it slower, because the higher octane gives less power output. IT is only if you have a high power engine setup prone to detonation that you need the high octane to stay safe and still make good power.
Octane, contrary to popular belief, is not a measure of power output, but a measure of volatility, or resistance to detonation. Detonation (ping, preignition) occurs because fuel burns too quickly/wildly for the engine/conditions. Lower octane burns faster, produces more power, but is more likely to ping. IN a nonturbo, conditions are nowhere near favorable for detonation, so the lowest octane you can find will produce the most power.
IN a turbo, supercharged, or high compression nonturbo engine (10:1 or higher), you commonly see higher octane requirements because of the setup and nature of the engine. They make much more power than a normal nonturbo engine, but they only hold together because of higher octane use. IF they used lower octane in such an engine, the power output would go even farther up, but the engine wouldnt hold together long.
This is why the notion of putting race gas into a honda or other lightly modified street car is so silly. You have kids that spend $50 on a tankful of 100-110 octane race gas to give their car the edge on the street. In reality they've just made it slower, because the higher octane gives less power output. IT is only if you have a high power engine setup prone to detonation that you need the high octane to stay safe and still make good power.
Wow, very interesting read, good to know. Thanks Kevin
Does this mean that If i were to use a mid-grade to possibly high grade, it will prolong the life of the engine? Or have no real effect....
Last edited by poor_red_neck; Sep 7, 2003 at 01:29 AM.
pei > caek
Joined: May 2002
Posts: 4,643
Likes: 0
From: Mars
Originally posted by poor_red_neck
Wow, very interesting read, good to know. Thanks Kevin
Does this mean that If i were to use a mid-grade to possibly high grade, it will prolong the life of the engine? Or have no real effect....
Wow, very interesting read, good to know. Thanks Kevin
Does this mean that If i were to use a mid-grade to possibly high grade, it will prolong the life of the engine? Or have no real effect....
Lava Surfer
Joined: Mar 2002
Posts: 2,354
Likes: 0
From: Kailua, HI
Originally posted by dr0x
That whole "high octane burns cleaner and is better for your engine" speach gas companies try to push down everyones throat is complete and utter bull ****. The only way its going to prolong engine life is if your motor is pinging.
That whole "high octane burns cleaner and is better for your engine" speach gas companies try to push down everyones throat is complete and utter bull ****. The only way its going to prolong engine life is if your motor is pinging.
more of it just gets spit out as shown by more flame flame when you run higher octane gas
OBEY YOUR MAZDA
Joined: Oct 2002
Posts: 3,060
Likes: 2
From: Denmark
Originally posted by poor_red_neck
This is a program I found a while ago.... ALL kinds of conversions... everything from distance, computer stuff (bytes etc) speed etc etc, and feature for custom conversions...
http://www.joshmadison.com/software/convert/convert.zip
Enjoy
P.S.
186.6 Nm = 124.3528 ft lbs.
This is a program I found a while ago.... ALL kinds of conversions... everything from distance, computer stuff (bytes etc) speed etc etc, and feature for custom conversions...
http://www.joshmadison.com/software/convert/convert.zip
Enjoy
P.S.
186.6 Nm = 124.3528 ft lbs.
Atleast horepower is horsepower
Concerning octanenumbers, 92 is the lowest octane available in Denmark, then comes 95 and 98 and thats it, not many to chose from. I use 92
Last edited by Kim; Sep 7, 2003 at 09:23 AM.
Thread Starter
Banned. I got OWNED!!!
Joined: Aug 2003
Posts: 143
Likes: 0
From: Nebraska
Originally posted by SonicRaT
I believe they also have different rating systems between countries, so it's hard to compare 98 from there to 98 from here.
I believe they also have different rating systems between countries, so it's hard to compare 98 from there to 98 from here.
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