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Old 20th January 2005, 23:13   #16
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hey satya i told u that someone is gonna disagree...
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Old 21st January 2005, 00:03   #17
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Well, there is no way this can happen. Prob you got the rpm wrong, or the speed wrong.

Shan2nu
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Old 21st January 2005, 00:17   #18
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Quote:
Originally Posted by Shan2nu
Well, there is no way this can happen. Prob you got the rpm wrong, or the speed wrong.

Shan2nu

yeah quite possible,
but i maybe wrong with the readings,but u cud easily feel the differnce in the way the engine accelerated.
also the exhaust had become more silent.
can anyone explain the exhaust thing
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Old 21st January 2005, 00:48   #19
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Yeah dude vtec's mine...NOS is for my buddy who's coming down from Mangalore in another weeks time. My vtec doesnt have NOS or any engine mods as such...Just the free flow, K&N, alloys and few other stuff...

Nothing is everything and everything is nothing.
-Chuck Shuldiner
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Old 21st January 2005, 14:46   #20
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after satya's talk abt 98 octane i thut why not get zulu a shot of it ! so off i went to reliance bunker in kopar khairane. asked for 98 octane and got the tank full abt 40 ltrs.

as soon as i cranked up the car , i felt the difference in the smoothness and as i shifted into 1st and let go - i could feel the car eager to get going ... all the irregularities in the heartbeat of the engine was gone !! felt as if a pace maker was added !!

and yeah while relaxed cruising i used to hit 80 at 2500 RPM , now its 100 at 2550 RPM !! why and how , i need a explanation !!!

well at Rs 47.45 it aint cheap and there is no way we can test if the fuel is 98 octane - also 93 octane is at 42.xx out there.

have to test the car properly - will keep u guys posted on developments!!
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Old 21st January 2005, 15:15   #21
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Quote:
and yeah while relaxed cruising i used to hit 80 at 2500 RPM , now its 100 at 2550 RPM !! why and how , i need a explanation !!!
Doesn't make sense. Chances are, you guys are making a mistake somewhere.

Shan2nu

Last edited by Shan2nu : 21st January 2005 at 16:48.
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Old 21st January 2005, 16:01   #22
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Quote:
Originally Posted by Shan2nu
Doesn't make sense. Chances are, you guys are making a mistake somewhere. 20 kmph gain in 50rpm? possible prob in the 1st gear (but 1st gear doesn't reach 100, nor does your 2nd gear).

Shan2nu

Quote:
Originally Posted by NC
and yeah while relaxed cruising i used to hit 80 at 2500 RPM , now its 100 at 2550 RPM !! why and how , i need a explanation !!!

heheh shan,
now wat do u say abt this.how can 2 guys make the same mistake ,

can anyone please explain.

DOM are u listening



satya
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Old 21st January 2005, 16:34   #23
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Ok give me your gear ratios, final drive ratio, and wheel size. I'll do the math and tell you.

Quote:
now wat do u say abt this.how can 2 guys make the same mistake ,
In this case, i must say that 2 guys have infact made a mistake. Fuel quality cannot affect the "speed to rpm" ratio.

Atleast for the Vtec, it does 139kmph at 4000 rpm in 5th and this increases to just 141kmph at 4050 rpm in the same gear. For the speed to increase by 20kmph (159kmph) the Vtec's engine will have to revv to 4546 rpm. That's an increase of 546 rpm.

20kmph increase in 50rpm? U must be joking.

Shan2nu

Last edited by Shan2nu : 21st January 2005 at 16:42.
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Old 21st January 2005, 21:28   #24
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Quote:
Originally Posted by Shan2nu
In this case, i must say that 2 guys have infact made a mistake.

U must be joking.

Shan2nu
we are not joking just asking for explanations of things we dont undrstand !!
and yeah we aint fools to make mistakes pal...call us ignorant but we know whats up with our cars !!

will post the ratios here later
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Old 21st January 2005, 21:50   #25
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Yeah give me the ratio details. But i'm telling you, technically or even practically it's not possible. Prob your speedo, tacho or clutch have some sort of prob.

Shan2nu
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Old 21st January 2005, 21:53   #26
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Quote:
Originally Posted by Shan2nu
Yeah give me the ratio details. But i'm telling you, technically or even practically it's not possible. Prob your speedo, tacho or clutch have some sort of prob.

Shan2nu
well how can the speedo / tacho / clutch develope the same problem in 2 diff cars rite after tanking up with 98 octane ??
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Old 21st January 2005, 22:03   #27
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Quote:
well how can the speedo / tacho / clutch develope the same problem in 2 diff cars rite after tanking up with 98 octane ??
Man, are you trying to tell me that your gear ratios just changed, or that your wheel circumference just increased? Not possible.

Only 3 reasons why this can happen. Either your tacho isn't showing the right rpm, or your speedo has error or your clutch has started slipping. I don't know which off these is causing it to happen, but trust me, it has nothing to do with the fuel.

Take your car to the Ford dealer and tell him your story. Lets see if he can throw some light on this.

Shan2nu
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Old 21st January 2005, 23:03   #28
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i agree with shantanu the fuel quality cannot affect rpm to kmph ratio under any circumstances.
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Old 21st January 2005, 23:18   #29
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Shan2anu, I agree with you, fuel quality can smoothen the engine, so will get a better response, but can't change the rato!!

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Old 21st January 2005, 23:37   #30
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Hi Guys!!
True, fuel octane wont change speed of the car with a specific ratio. It can change how fast you can reach a certian speed (depends from motor to motor). Engines will run more smoother, and ignition timing can be adjusted for better combustion.
The rpm to speed ratio will remain the same whatever fuel you use, unless your tire size or gear ratio is changed.

Cheers
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