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Old 05-12-2009, 05:32 PM   #61
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Yes.........first to admit.......palms up & forward............Tony, very good information.......guess I got trapped by the marketing hype of the fuel companies years ago & never researched it thoroughly, which is normally against the norm, but also, took upon face value the fact my wife's car pinged like **** when using 91 then, used 98, no pinging & better economy. Guess I became stubborn then.

All good!
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Old 05-12-2009, 06:15 PM   #62
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look i was stubborn as well, it is part of my nature to be so, im a capricorn haha.. all the things i argued for were straight from the book and things i learnd in lectures. but each car is unique and different and each will behave differently. what i said is theory and its tried and tested and proven, but there will always be cars that go completly against it within reason, beacuse of somethng or another
but still to this day i get a laugh out of seeing someone putting 98 in their yaris or something
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Old 05-12-2009, 06:21 PM   #63
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I'm a goat too haha
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Old 05-12-2009, 06:50 PM   #64
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Quote:
Originally Posted by Phraze View Post
This was a very interesting read thanks Tony. you make some very interesting points that I have never heard before.

I have been testing my BJ 1.8 on both 91 and 98 RON fuel (live in QLD and my local station still sells 91) and have found no difference in fuel consumption over 3 months of testing.

The only difference I found that when i was running my car on 98, my car smells of Petrol when I get out ?? guess i will have to look at other options to increase my kms per tank. (I'm not happy with an average of 8.7L per 100kms)
Walk, bicycle or carpool.
If you drive a car it will use petrol and 8.7 per 100km is about average for a 1.8 jap hatch. My not knowing your unique driving requirements in this instance is not important because I really don't care. My Mazda 2 uses that much fuel and that's a 1.5 in a smaller, lighter chassis but it's more about how I use it than how it's tuned.

OK I've had my winge... What fuel milage would you consider reasonable for your BJ and why?
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Old 05-12-2009, 07:28 PM   #65
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It really amazes me that people complain about reasonable fuel consumption ,if you drive your car it will use fuel it is a fact of life for a 4 cylinder using under 10 litres per hundred is good . Half these motors that are being putted around town and not reved above 3000rpm would be full of carbon in the upper cylinder area.
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Old 05-12-2009, 08:13 PM   #66
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Yep, a good rev & highway run on a regular basis is good for any engine you want free of build up
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Old 05-12-2009, 09:39 PM   #67
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good to think im being nice to me engine everytime i punch it bak a gear or 2.

I was watching the cricket today, and an advert came up for the ford fiesta eco. reccons it useds 3.6L per 100km.

But they also reccon the zetec version uses like 5L and i can tell u i drove my mums the other day, easy driving nothing special the cars computer was tellin me i was using about 7.8L per 100km
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Old 06-12-2009, 12:39 PM   #68
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is the eco DISI? that with a 1.3L and VVL might give you 3.6, on a dyno lol. or on freeway with back wind haha
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Old 06-12-2009, 02:29 PM   #69
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If you get five cars nose to tail at the most economic speed and everything is at peek tune you'll get those figures.
Did Holden get their 3.0 litre DISI Commo from Melbourne to Sydney on one tank? Sure they did but I'll bet they did it using tricks like the one above. From what I've been told the Mazda MPS engine has direct injection (DISI is a Holden trademark) so not realy a Holden first.
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Old 06-12-2009, 02:43 PM   #70
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yeah the mazda has direct injection and the engins were DISI, they cant trademark it because they did not coin the term, neither did mazda, its a type of cycle that was rather imposible to achive economicaly up until recently. just like noone can trademark the name diesel, or spark ignition or stuff like that. they can trademark the pretty logo tho hehe
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Old 06-12-2009, 03:04 PM   #71
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My mistake Holden call their DISI SIDI which they can trademark.
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Old 06-12-2009, 05:20 PM   #72
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yepp thats it
like i said but i like the logo (looks awfully close to hondas/toyotas synergy drive logo IMO)
but its still stupid cus all the words are the same in the accronym, just in dif order..
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Old 06-12-2009, 06:19 PM   #73
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but its still stupid cus all the words are the same in the accronym, just in dif order..
Abbreviation not acronym.
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Old 06-12-2009, 07:23 PM   #74
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Give Tony a break this is a forum not a english lesson
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Old 06-12-2009, 08:12 PM   #75
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I didn't tell him he spelt acronym wrong did I?
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Old 06-12-2009, 08:20 PM   #76
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I'm not happy with an average of 8.7L per 100kms
8.7L per 100km is a very reasonable figure for your car. Nowadays given my general lack of highway driving I'm happy if I get <10L in my SP. I used to be quite interested in lowering my fuel consumption but given the realities of driving it, the largest factor (aside from something like a major mechanical fault or the like) is the way you drive it.
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Old 06-12-2009, 10:56 PM   #77
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isnt a acronym a shortened string of words by using the first letters of each word?
as in Direct Injection Spark Ignition (DISI) not a abbreviation where u can use any letters from the words?
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Old 07-12-2009, 02:04 PM   #78
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Just for comparison, my BJ 1.8 does 7-8L/100km highway(best ever 6.9), 11-12 city, worst ever was 18 (at Mount Cotton car control course). I currently budget 9 for my present day to day driving. So 8.7 sounds about right for "normal" driving in the BJ.

I've done 207,000km in this car and logged almost every litre. By far, the biggest effect on fuel consumption is how it is driven. eg easy on the throttle, make use of injector cutoff on overun approaching red lights etc.
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Old 07-12-2009, 02:31 PM   #79
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isnt a acronym a shortened string of words by using the first letters of each word?
as in Direct Injection Spark Ignition (DISI) not a abbreviation where u can use any letters from the words?
Correct.

Abbreviation = Est. (Established)
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Old 07-12-2009, 05:25 PM   #80
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An acronym is an abbreviation that can be said as a word.
DISI is pronounced letter by letter (abbreviation) while QANTAS is pronounced as a word (acronym). Est. can go either way.
DISI is normaly pronounced as dee eye ess eye not dissy.
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