[Archived - 2009] PK Official- Questions for Newbie

[Guest Inked 2 Skin]

Hi guys... Got another Qn...

Sometimes when i rev or as in trottle too much ah, i got this problem like very loud but no power... like there's only air going in but totally no power... Is it normal?

[iVy]

Rating of fuel:

The octane rating of hydrocarbons is determined by the structure of the molecule, with long, straight hydrocarbon chains producing large amounts of easily-autoignitable pre-flame decomposition species, while branched and aromatic hydrocarbons are more resistant.

Thus, the higher numbers of the straight hydrocarbon chains, the higher the fuel rating.

 

Types of fuel ratings:

Research Octane Number ( RON ), and the Motor Octane Number ( MON )

 

What does the Motor Octane rating measure?

The conditions of the Motor method represent severe, sustained high speed, high load driving.

 

What does the Research Octane rating measure?

The Research method settings represent typical mild driving, without consistent heavy loads on the engine.

 

Can higher octane fuels give me more power?

On modern engines with sophisticated engine management systems, the engine can operate efficiently on fuels of a wider range of octane rating, but there remains an optimum octane for the engine under specific driving conditions.

 

If you are already using the proper octane fuel, you will not obtain more power from higher octane fuels. The engine will be already operating at optimum settings, and a higher octane should have no effect on the management system. Your drivability and fuel economy will remain the same. The higher octane fuel costs more, so you are just throwing money away. If you are already using a fuel with an octane rating slightly below the optimum, then using a higher octane fuel will cause the engine management system to move to the optimum settings, possibly resulting in both increased power and improved fuel economy. You may be able to change octanes between seasons (not needed in Singapore, but an example is to reduce octane in winter) to obtain the most cost-effective fuel without loss of drivability.

 

Once you have identified the fuel that keeps the engine at optimum settings, there is no advantage in moving to an even higher octane fuel. The manufacturer's recommendation is conservative, so you may be able to carefully reduce the fuel octane. The penalty for getting it badly wrong, and not realizing that you have, could be expensive engine damage.

 

Does low octane fuel increase engine wear?

Not if you are meeting the octane requirement of the engine.

If you are not meeting the octane requirement, the engine will rapidly suffer major damage due to knock. You must not use fuels that produce sustained audible knock, as engine damage will occur.

If the octane is just sufficient, the engine management system will move settings to a less optimal position, and the only major penalty will be increased costs due to poor fuel economy. Whenever possible, engines should be operated at the optimum position for long-term reliability. Engine wear is mainly related to design, manufacturing, maintenance, and lubrication factors. Once the octane and run-on requirements of the engine are satisfied, increased octane will have no beneficial effect on the engine.

The quality of gasoline, and the additive package used, would be more likely to affect the rate of engine wear, rather than the octane rating.

 

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A summary for those who are interested.

 

as for the compression ratio, it's a bike-to-bike variable thing ...

the RON & MON ratings are also tested against different vehicles with different compression ratio, thus the compression ratio has not much to do with the fuel itself ...

 

[Guest Inked 2 Skin]

Dont understand sia...

 

a bit cheemy

[adhlk]

for me as well......

 

To me, as long as the machine still runs well...no harm done to my wallet....I am

 

Your question on during opening throttle, you feel as if air is going in and no power?

Are you having a hollow feeling when opening throttle?

 

I use to have the same feeling as well....went to Ah Koon, he mention that he tune it as such the RPM is low->save fuel....Till date, never find out if that's true...but during my ride, FC is good and no complaint.....

 

In between, did you fix the wide handle bar....how is your mod coming? Should show us a picture of your phantom after mod......

[Guest Inked 2 Skin]

Oh... Still not done! Hee hee... Koon is always busy... Also don't know when can do it sia...

[lunloon]

Originally posted by chinu@Apr 20 2006, 11:58 AM

hahaaha. if you find that i am trying to pick on your post (if you dont like me to ask you qns , i can ask others . ). you can drop me a pm to tell me not to quote ur post . no worries it can be done . :smile:

You're cool, i just wan to put disclaimer not for you la, there are people out there who think anyone who post = universal truth ma. If dun put disclaimer then someone might just pick it up and say how come I anyhow say, when what I say is what happen to me ma.

 

If they can understand that it's ME who is riding MY bike then it would be much easier posting.

[lunloon]

Originally posted by chinu@Apr 20 2006, 11:52 AM

oh i see . i used 92 for my ta b4 too , but didnt find much problem staying at 100km/h . somemore the rider is 100kg with 2 X e41 side box .

I think it's my bike's temper...

[adhlk]

lun, you have given me an idea, I think I will change my signature to disclaimer....so no with each other anymore.......

[chinu]

Originally posted by lunloon@Apr 21 2006, 08:53 AM

You're cool, i just wan to put disclaimer not for you la, there are people out there who think anyone who post = universal truth ma. If dun put disclaimer then someone might just pick it up and say how come I anyhow say, when what I say is what happen to me ma.

 

If they can understand that it's ME who is riding MY bike then it would be much easier posting.

[chinu]

Originally posted by lunloon@Apr 21 2006, 08:55 AM

I think it's my bike's temper...

ur bike sure got expensive temper :cheeky:

[lunloon]

but i realise i try 92 and 98, but i never try 95...

gonna try 95 see can or not...

[lunloon]

Originally posted by adhlk@Apr 21 2006, 09:18 AM

lun, you have given me an idea, I think I will change my signature to disclaimer....so no with each other anymore.......

glad to be your muse.

[iVy]

Originally posted by Inked 2 Skin@Apr 20 2006, 09:04 PM

Dont understand sia...

 

a bit cheemy

well ...

i'd quite sum it all, and only taking the impt points ..

 

it actually meant that any fuel of a better grade, cannot be utilized by the bike fully, is just hurting the pocket of the rider ...

but unless if one's using fuel of a much lower grade than required than it's hurting the engine...

but still, utimately, it's all up to the preference of the rider ...

 

well ... as i'd mentioned .. it's for those who are interested ..

hopefully can help in the understanding of the fuel that our bikes are using ...

 

 

[Guest Eason]

Hi guy any one heard of isumi brake pad any comment , or other good brake pad to recommend ?>

[adhlk]

Originally posted by lunloon@Apr 21 2006, 01:35 PM

glad to be your muse.

Miss having lunch with you and baby.....Find one day go down to Shenton to have lunch with you......I will PM you.....

[camel.com]

hey guys..

 

gt a question to ask.. how long u all change ur headlight de light bulb??? my like fuse after 1 mth or so.. is this normal???

 

btw.. did anyone try de caltex techron petrol??? how it fair.. i m usin caltex now.. n jus change my EO to FUCHS full synthenic.. den my problem of tesioner is gone.. no more loud loud TAK TAK TAK TAK TAK.. don noe is petrol improve de situation.. or de engine oil.. plz advise.. thanks a million

 

SK

[Keenguy]

Chage lightbulb in 1 month? That's abnormal... usually can use up to... quite long, at least 1yr/2yrs but definately not 1 month...

 

Caltex petrol seems to be more ex than the rests. Most riders do pump Shell 95/98 or Mobil 5000 will be gd enough. No exact preference for petrol, it depends on individuals. As for the tak tak, maybe its bcos you just changed your EO, so the timing chain area have enough EO lubricated. See if the tak tak sound comes back 1 or 2 weeks later... if not, then you shld continue using that EO and petrol since it serves gd for your bike!

[mercurius]

imho, caltex techron quite gd, as for price, i dun really agree that its exp, i pump at tampines caltex and i got 10.10% discount, i only pump 8 litres of silver techron but i dun have any membership card wadsoever, i also dunno how i get the 10.10% dis.

[TheYasMan]

Guys!

May i know where LAB is? The full address?

And where can we get plastic customized plate numbers from?

Thanks!

[fleaz]

my H4 bulb blew. first the high beam went, then the low beam now also gone. i am wondering anyone know the cause of it?

[camel.com]

hey.. thanks for de reply.. i also believe caltex not bad leh.. after using realli feel "cleaned".. don noe is really cleaned or jus psychological tinkin of mine.. haha.. caltex petrol also look thinner n more transparent den shell for me.. don noe wat u all tink??

 

hey fleaz...

i same problem with u leh.. 1st high beam den low beam also up lorry.. raining somemore.. but mine is a normal bulb from planet motor..

[Technician III]

Originally posted by camel.com@Apr 23 2006, 12:12 PM

hey guys..

 

gt a question to ask.. how long u all change ur headlight de light bulb??? my like fuse after 1 mth or so.. is this normal???

 

btw.. did anyone try de caltex techron petrol??? how it fair.. i m usin caltex now.. n jus change my EO to FUCHS full synthenic.. den my problem of tesioner is gone.. no more loud loud TAK TAK TAK TAK TAK.. don noe is petrol improve de situation.. or de engine oil.. plz advise.. thanks a million

 

SK

Hmm.. I oso use caltex petrol.. Last time used to pump another brand of petrol but i realised I had difficulty starting the bike early in the morning.. However, aft pumping caltex gold, I nv had difficulty starting the bike no matter wat time it is.. Dunno if u experienced this but it's true for me.. Tried using caltex platinum but doesn't c much difference in my bike.. Will switch back to caltex gold next fuel top up.. Must c wat difference these 2 petrols have..

 

Anyway, if u have read my previous post b4, I was complaining bout still using mineral oil aft my 3000km run in.. I've dumped away tat oil and replaced it with Maxima SynBlend (semi-syn).. Not bad leh.. Engine more quieter and more power.. Aft I used finish my remaining 0.7Ltr, will try Maxima Extra (fully syn).. c got any difference or not..

 

Hmm.. oso feel like trying NGK-G power plug.. will fix it next time when do servicing.. Curious to c wat effects these products have on my bike.. Always hear pple say this and tat gd.. But if nv try it out, I'll nv know wat realli their benefits r..

 

[camel.com]

haha.. maxima i use very good.. i like.. super easy to change gear.. more power... but i now try fuchs silkolene... engine alot more quiet den no more tesonier problem.. but change gear not as smooth.. btw fuchs i try de 10w50.. maxima i use 10w40.. maybe next time i go find de maxima 10w50

 

btw.. if nv oil/wax/lubricate de chain.. wat will happen???? i already 3 mths nv lubricate my chain lao.. will something happen??

thanks..

[Guest Eason]

Originally posted by camel.com@Apr 24 2006, 09:41 PM

haha.. maxima i use very good.. i like.. super easy to change gear.. more power... but i now try fuchs silkolene... engine alot more quiet den no more tesonier problem.. but change gear not as smooth.. btw fuchs i try de 10w50.. maxima i use 10w40.. maybe next time i go find de maxima 10w50

 

btw.. if nv oil/wax/lubricate de chain.. wat will happen???? i already 3 mths nv lubricate my chain lao.. will something happen??

thanks..

i think you better go lube your chain, i last 2 weeks never lube then some more raining ... when i ride i can feel the chain like turn in to stone....

[camel.com]

okok.. thanks for de advice.. where can get cheapest chain lubricate.. LAB ar..