Using super unleaded petrol (any major risks?)

My bike is supposed to be running on normal 95 octane unleaded but I tried running a full tank of 97 octane super unleaded.
Rode the bike for about 10miles on the super unleaded, the exhaust randomly made a load POP and the revs suddenly picked up.
I pulled over inspected the bike and got back on.

The bike runs smoother, has a more responsive throttle and improved all round performance, I love it.

Will running super unleaded damage the bike long term?
And
Is it normal for the exhaust to pop and performance to suddenly increase?
It hasn't happened before or since and appears to be a one of as a result of changing the fuel but why?

Any help will be greatly appreciated.
Cheers,
Oliver

 

what bike u ride mate ?

 

any normal bike will be set to run on 95 ron a little more or less will be fine, the only way youd see a difference in high octane is with an engine built to run on higher octane fuel

for example the ford focus rs (old turbo model) is to be run on super only as stated in the manual

the 172cc kit from pm tuning is set to run best on super with the squish set correctly

in any vehichle of standard tune cyclinder wise normal fuel is fine

 

Super is better quality and has more cleaning additives as far as i know i dont see how it could possibly do damage?

The better running and throttle response are normal (im pretty sure i get more mpg from super/vpower aswell). You must be the only ped owner in the world whos worried their bike is running smoother

 

Edgar -
im riding a 2011 aprilia sportcity one 50cc 2T.

Creamsodauk -
cheers mate, atleast I can relax knowing my bike won't blow up (LOL) from using high octane fuel.
There is definitely a increase in performance, not much but I'm getting a extra 2mph top end and much better acceleration/throttle response.

Ramo -
I'm not worried that the bikes running better, I love that
I'm just wondering why the exhaust went POP and since then performance has increased?
Is it due to High octane having more cleaning additives and possibly removed a minor blockage I had or something else?

Cheers,
Oliver

 

Jonnymarrw00t-
Cheers mate.

Everyone -
On another note I have noticed a rattling noise coming from the engine case area whilst riding.
It only appears throughout the mid range revs.

I've had a quick look in the engine case but haven't had a proper look at the clutch and variator as my mate is borrowing my impact wrench which I need to get them off (I hate strap and torque wrenches LOL), there was nothing visibly wrong.
Some days when I ride it isnt there but others it is.

Any ideas?

Cheers,
Oliver

 

haha 97 high octane fuel.... i always run my bikes on 99 octane, thinking of swapping over to avgas in the near future. what sort of rattling sound? does it do it at any specific speed or just certain rev ranges?

 

Scubabiker -
From 15mph to 35mph it makes a rattling noise, almost like shaking a ball bearing in a tin can.
I know it's not the exhaust and is definitely coming from the engine casing area but it's driving me insane.

It doesn't matter whether I'm gentle on the throttle or a complete mad man it still rattles.

Anybody have any idea?

Cheers,
Oliver

 

maybe its a spring from your side/centre stand or a loose bit of plastic? my bike is 30 years old (not my scooter) and its so noisy i dont notice the rattles!

 

Scubabiker -
That must be one noisy bike you have Lol
I'll have a better look when I have the tools to take it apart because it's really annoying me.
I doubt it's anything important as the bike still runs the same but it really is driving me insane

 

could be piston slap in the bore. Do you know the bikes history, has it been nipped up at any time?

 

Stig -
The bike is a 2011 and I bought it directly from the dealer last December.
All derestriction and tuning have been done by myself.
It sounds like a ball bearing rattling around but I know its not the exhaust and is coming from the engine case?

 

i had that same problem oliver8 with my old technigas, i was riding down a very bumpy road with potholes everywhere, i heard a pop and had really good performance, then some rattling for a while from around the same place as you describe, i took the exhaust off and it was a restrictor that had snapped off in my exhaust, i got the thing opened up and welded back together for a tenner.

 

PedBoyEd -
I'll do the same with my exhaust and see if that is the problem, it's worth a try
It sounds like it could possibly be the problem.

 

tErr0 -
I have noticed a difference, I have got better throttle response from using higher octane fuel and my bike has not got higher compression.
So it's improved my bike, so generally were not all idiots, we're just making out bikes run better.

 

i run tescos 99 in my bike ever since i got it any other fuel it just drinks it so bad.