Advertise Here
It is currently Wed Sep 03, 2014 2:57 am

All times are UTC - 5 hours [ DST ]


Forum rules


Please DO NOT POST NEW QUESTIONS in this section. The Moderators move threads containing frequently asked questions (that have already been answered) here. However, if you have useful information, feel free to add it to the appropriate existing thread.



Post new topic Reply to topic  [ 23 posts ]  Go to page 1, 2  Next
Author Message
PostPosted: Wed Mar 28, 2007 3:51 pm 
Offline
Poster Child

Joined: Wed Feb 21, 2007 6:27 pm
Posts: 3
Location: Vancouver, BC
I have a Piaggio BV250 and I believe the manual calls for
octane level 91.

Is this what should be used versis 87/89 or is it the same
gimmick (suggestion) that you have in the car manuals?


Top
 Profile  
 
 Post subject: Re: Octane Level
PostPosted: Wed Mar 28, 2007 3:55 pm 
Offline
5000cc Scooter God
User avatar

Joined: Thu Aug 10, 2006 7:49 pm
Posts: 5147
Location: If I was up your butt, you'd know!
Scooter Model(s): Modhater
valerio166 wrote:
I have a Piaggio BV250 and I believe the manual calls for
octane level 91.

Is this what should be used versis 87/89 or is it the same
gimmick (suggestion) that you have in the car manuals?


Not it's not a gimmick. Leader engines call for higher octane.

-Vinny


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 28, 2007 3:57 pm 
Offline
Co-Founder & Administrator
User avatar

Joined: Fri Nov 11, 2005 1:40 pm
Posts: 14476
Location: uws
Scooter Model(s): et4 and px150
As I recall from the last time this debate surfaced here, many maintain it's a gimmick, but with the number of gallons we're dealing with my preference is to give 'er the juice. It's only a couple of cents difference and others insist performance is improved by higher octane gas.

Truth is, unless you're knocking, you probably have enough octane in there. But more can't hurt, can it?

_________________
*jonathan*


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 28, 2007 4:08 pm 
Offline
5000cc Scooter God
User avatar

Joined: Thu Aug 10, 2006 7:49 pm
Posts: 5147
Location: If I was up your butt, you'd know!
Scooter Model(s): Modhater
Here's some views on the topic.

http://www.scooterdiva.com/forum/viewtopic.php?t=124

http://www.modernvespa.com/forum/viewto ... tane+level

-Vinny


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 28, 2007 4:16 pm 
Offline
750cc Scooter Warrior
User avatar

Joined: Mon Feb 27, 2006 2:13 pm
Posts: 769
Location: the nyc
Scooter Model(s): 2006 red lx150+ aka Ginger - who was stolen from me
or this one:

http://www.nyscooterclub.com/forum/view ... ght=octane

_________________
insight is tough to come by these days

it's kind of like miami vice


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 28, 2007 4:44 pm 
Offline
25cc Weekend Buzzer
User avatar

Joined: Mon Feb 26, 2007 5:01 pm
Posts: 37
Location: Brooklyn, NY
It does call for higher octane because scooters don't run good when you use 87% octane.

_________________
Ducati King


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 28, 2007 5:03 pm 
Offline
5000cc Scooter God
User avatar

Joined: Tue Jul 25, 2006 7:04 pm
Posts: 5314
Location: New Hampshire via The East Village
Scooter Model(s): 2006 Yamaha Morphous "The Scoodillac"
Dude fuel: http://iml.jou.ufl.edu/projects/Spring0 ... /fuel.html

Fuel for the rest of us: http://en.wikipedia.org/wiki/Octane_rating

_________________
“The dignity of human beings needs to be defended.” – Stéphane Frédéric Hessel

Peace and take care of yourselves,
José


Top
 Profile  
 
 Post subject: Re: Octane Level
PostPosted: Wed Mar 28, 2007 5:27 pm 
Offline
500cc Distance Rider
User avatar

Joined: Sat Dec 24, 2005 11:23 am
Posts: 542
Location: Flushing, NY
Scooter Model(s): 2006 Piaggio BV500 (sold); 2005 Vespa GT200 (sold)
Vinny wrote:
Not it's not a gimmick. Leader engines call for higher octane.

Or, to quote Lunch Lady Doris from The Simpsons: "More testicles means more iron!".


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 28, 2007 10:13 pm 
Offline
1000cc Scooter Legend
User avatar

Joined: Mon May 01, 2006 8:09 pm
Posts: 1084
Location: Brooklyn
using higher than recommended octane in your engine develops carbon..CARRRBBBON PEOPLE

_________________
Founder and President of the "Yogi Bear Scooter Looter Club"


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 28, 2007 10:30 pm 
Offline
1000cc Scooter Legend
User avatar

Joined: Wed Mar 15, 2006 1:45 pm
Posts: 1248
Scooter Model(s): Your Sister
Yea, but using a 91 instead of 87 in my 53 Plymouth made the marbles in a jar sound go away when it climbs hills.


Just ride your fucking scooter like it was your best friends mom. Hard, fast and hang on tight cause shes quite a ride.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 28, 2007 10:34 pm 
Offline
1000cc Scooter Legend
User avatar

Joined: Mon May 01, 2006 8:09 pm
Posts: 1084
Location: Brooklyn
if you got detonation, going up in octane over whats recommended is just masking the underlying problem

_________________
Founder and President of the "Yogi Bear Scooter Looter Club"


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 28, 2007 10:58 pm 
Offline
5000cc Scooter God
User avatar

Joined: Thu Aug 10, 2006 7:49 pm
Posts: 5147
Location: If I was up your butt, you'd know!
Scooter Model(s): Modhater
ScooterQualified wrote:
using higher than recommended octane in your engine develops carbon..CARRRBBBON PEOPLE


Carbon is everywhere, it's not developed.

-Vinny


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 28, 2007 11:10 pm 
Offline
1000cc Scooter Legend
User avatar

Joined: Wed Mar 15, 2006 1:45 pm
Posts: 1248
Scooter Model(s): Your Sister
ScooterQualified wrote:
if you got detonation, going up in octane over whats recommended is just masking the underlying problem


The problem is that its a tired freaken engine. And sense its off the road this coming weekend to have its engine ripped out and replaced by a rebuilt flathead 6 bored .60 over with a alum. head, dual intake with two strombergs.

vrooooooom


Top
 Profile  
 
 Post subject:
PostPosted: Thu Mar 29, 2007 4:21 am 
Offline
Co-Founder & Administrator
User avatar

Joined: Fri Nov 11, 2005 1:40 pm
Posts: 14476
Location: uws
Scooter Model(s): et4 and px150
ScooterQualified wrote:
using higher than recommended octane in your engine develops carbon..CARRRBBBON PEOPLE


ScooterQualified wrote:
if you got detonation, going up in octane over whats recommended is just masking the underlying problem

Good points, but remember in this case the high octane IS what the manufacturer recommends. So the question is whether that is really necessary or can you go lower without consequence.

P.S. Retitling post, moving to FAQ.

_________________
*jonathan*


Top
 Profile  
 
 Post subject:
PostPosted: Thu Mar 29, 2007 10:30 am 
Offline
1000cc Scooter Legend
User avatar

Joined: Mon May 01, 2006 8:09 pm
Posts: 1084
Location: Brooklyn
If you go below the manufacturers recommended octane the you get detonation. Detonation or knocking is an erratic form of combustion that can cause head gasket failure as well as other engine damage. Detonation occurs when excessive heat and pressure in the combustion chamber cause the air/fuel mixture to autoignite. This produces multiple flame fronts within the combustion chamber instead of a single flame kernel. When these multiple flames collide, they do so with explosive force that produces a sudden rise in cylinder pressure accompanied by a sharp metallic pinging or knocking noise. The hammer-like shock waves created by detonation subject the head gasket, piston, rings, spark plug and rod bearings to severe overloading. Prolonged or heavy detonation can be very damaging. So if you hear knocking or pinging when accelerating or lugging your engine, you probably have a detonation problem.

_________________
Founder and President of the "Yogi Bear Scooter Looter Club"


Top
 Profile  
 
 Post subject:
PostPosted: Thu Mar 29, 2007 5:26 pm 
Offline
5000cc Scooter God
User avatar

Joined: Tue Jul 25, 2006 7:04 pm
Posts: 5314
Location: New Hampshire via The East Village
Scooter Model(s): 2006 Yamaha Morphous "The Scoodillac"
Are we writing about pre-detonation?

_________________
“The dignity of human beings needs to be defended.” – Stéphane Frédéric Hessel

Peace and take care of yourselves,
José


Top
 Profile  
 
 Post subject:
PostPosted: Tue Apr 10, 2007 8:34 pm 
Offline
4000cc Scooter Titan
User avatar

Joined: Sun May 14, 2006 5:12 pm
Posts: 4911
Location: dabronx
Scooter Model(s): 2006 LX190 DRAGON RED SCOOTER
dont be a mizer, splurge. she'll love you long time :)

_________________
interests: scooters and bow-legged women


Top
 Profile  
 
PostPosted: Sat May 17, 2008 7:31 pm 
Offline
Co-Founder & Administrator
User avatar

Joined: Fri Nov 11, 2005 1:40 pm
Posts: 14476
Location: uws
Scooter Model(s): et4 and px150
Note: When you look in your Piaggio/Vespa manual keep in mind that the recommended octane level is the EU standard, which is about 4 octane points above North American ratings. So if the manual says 95 octane, you can use 91 octane.

_________________
*jonathan*


Top
 Profile  
 
 Post subject: Re:
PostPosted: Sun May 18, 2008 1:56 pm 
ScooterQualified wrote:
If you go below the manufacturers recommended octane the you get detonation. Detonation or knocking is an erratic form of combustion that can cause head gasket failure as well as other engine damage. Detonation occurs when excessive heat and pressure in the combustion chamber cause the air/fuel mixture to autoignite. This produces multiple flame fronts within the combustion chamber instead of a single flame kernel. When these multiple flames collide, they do so with explosive force that produces a sudden rise in cylinder pressure accompanied by a sharp metallic pinging or knocking noise. The hammer-like shock waves created by detonation subject the head gasket, piston, rings, spark plug and rod bearings to severe overloading. Prolonged or heavy detonation can be very damaging. So if you hear knocking or pinging when accelerating or lugging your engine, you probably have a detonation problem.


I was told by the seller and the manufacturer of my 150 to use only regular unleaded - when I did I got that detonation and knocking and the whole scooter would shake so much at idle that I couldn't make out anything in my rear views. I decided to go up to the 89 octane and the scooter ran much much better - more powerful and smooth on acceleration, no shake at idle, just a very nice ride. 93 gave me way more mileage but the scooter ran a bit like sludge compared to the 89; went back to 89 and its fast and smooth again. Will using a higher octane, even once, though, when you don't really need to lead to clogged fuel injectors or any other engine problems? My engine runs fine and sounds great but I'm paranoid that I might have a problem in the future, even if I don't notice anything now.


Top
  
 
PostPosted: Thu Jun 05, 2008 2:57 pm 
Offline
250cc Rally Go'er
User avatar

Joined: Thu Dec 15, 2005 6:33 pm
Posts: 413
Location: in denial...aka...hoboken
Scooter Model(s): pretend i still own a 1969 VBB made in India, 2005 Stella, 2001 Et4
i am going to aviod all of the sub comments of mis-information, tribal knowledge and other garbabble...and simply make a statement based on the following that outlines my experience:

- ASE Master Technician with certification in advanced Emissions Performance and Diagnostics
- Owner of an independant service center specializing in High Performance, Emissions Diagnosis
- Land Rover Master Technician
- 12 years working in the engineering departments of two auto manufacturers
- I do on board computer diagnostics every day as a job (including combustion diagnosis)

Use what the f-in owners manual tells you to use....no questions (unless at high atitude then use the closest thing possible as they do not have as high a octane)....dont go by ear...dont go by feel... go by the what the people say who designed the damn machine...

if you really wanna know the techno detail...I will be more than willing to blather on and on at the monkey some night...

_________________
if i had the ability to care less...i could'nt actually do it..


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 23 posts ]  Go to page 1, 2  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:


Powered by phpBB © 2000-2012 phpBB Group | Terms of use | Privacy policy | Return to the New York Scooter Club home page