IronFox
3/8/2006 12:56:37 PM
The higher octane gas just needs a hotter spark to burn properly.
Calkidd
3/9/2006 12:24:41 AM
quote:
ORIGINAL: IronFox
The higher octane gas just needs a hotter spark to burn properly.
Negative Ghost Rider.....
It needs higher compression....
Calkidd
3/9/2006 12:29:30 AM
quote:
ORIGINAL: chainstretcher
Involves squirting water into the throttle bodies while the engine is running.
WHOA, WHOA, WHOA!!!!
..........
Be careful how you say this, the next thing we'll have is another post with some one taking your advise and Hydraulicking their engine.
Maybe be a little more specific. However, I can honestly say I have never heard of this nor do I suggest it.
Calkidd
3/9/2006 12:31:57 AM
quote:
ORIGINAL: QuinC
bump.. lower the elevation more air pressure there is meaning you need better gas, depending on compression of course.. also a big bump on the pinging, if your car/bike pings then you need better gas. simple as that.
would be currious to see the diffrence of 87 octane vs. 120 octane on a dyno though.
Y'all need to understand something. The octane values have nothing to do with quality of the fuel. So quit saying low grade and high grade as this does not have anything to do with quality.
chainstretcher
3/9/2006 7:29:36 AM
quote:
ORIGINAL: Calkidd
quote:
ORIGINAL: chainstretcher
Involves squirting water into the throttle bodies while the engine is running.
WHOA, WHOA, WHOA!!!!..........
Be careful how you say this, the next thing we'll have is another post with some one taking your advise and Hydraulicking their engine.
Maybe be a little more specific. However, I can honestly say I have never heard of this nor do I suggest it.
We're talking 5cc's of water slowly injected into the air stream while maintaining a constant throttle above 3500rpms. This will get rid of the majority of carbon deposits on your exhaust valves and pistons. If you were running a forced air system you can use a water injection system to cool the charge instead of an intercooler. You'll absolutely have the cleanest pistons and valves you ever saw -- just a byproduct of the water being injected. It's perfectly safe as long as you don't get stoopid with the amount of water. It only takes a little.
As far as altitude and octane or bigger sparks ... octane is just a number assigned to gas that indicates what it's resistance to detonation is. Period.
Tahoe SC
3/9/2006 12:48:25 PM
yea baby...i gots 2 aquamist water injection systems on my tahoe...
everytime i punch it...the cyclinders get a nice steam cleaning...and allows me to run more boost with the fuel mixture i gots without ping.
but like the company name...it's a mist...like a fog...not like a farking hose mang...it's so hot in there that it gets turned to steam real quickly too!
as far as bike tuned for 87 pinging...yes...you can use higher octane...but it's just a bandaid..cause in reality...What's really making it ping when it shouldn't???? aha!!!!!
Calkidd
3/9/2006 1:08:21 PM
I understand all about water injection, but if you don't spell it out there's that one person who really messes up. Kind of like pouring paint in the exhaust can
chainstretcher
3/9/2006 3:47:39 PM
Ya Tahoe -- the aquamist is a bullet proof little unit in my book. I betcha I ran 300 gallons outta it with zero problems. On mine it started squirtin at 5# but I had it mounted on my uptube right near the turbo so it would atomize as much as possible. When it's fightin positive pressure it tends to stream instead of mist.
Tahoe SC
3/9/2006 3:59:22 PM
i ran alcohol/water mix for a bit and my exhaust smelled so good...but now it's breaking everything...
truck still runs but engine mount keeps busting...
i gots 1 unit coming on at 3lbs and the other at 5lbs...i'm running lower boost cause mah truck can handle that much as my injectors are all maxed out.
i love the thing but it's so not streetable it sucks for commuting and it's so hard to keep it in great shape to run well all the time...
it's all about bikes now baby!!!!!!!
chainstretcher
3/9/2006 5:00:43 PM
Alchy is a bee-yatch ... will cool the piss outta your intake charge (and add a couple ponies to boot) but is highly unpredictable. My motto -- drink alcohol / spray the water
uansari1
4/16/2006 10:45:54 AM
Ok guys, let me start off by saying that I understand and totally agree to use fuel of the proper octane. Anyone saying that 93 octane fuel is cleaner burning, higher quality, blah blah blah is full of it. My F3's manual states to use 86 or better octane fuel, so I was planning on running regular 87. BUT, I removed my tail fairing last night to wire up my trunk kit and saw a factory sticker on the frame/tube under the fairing. It stated, among other things, to use 91 octane... WTF?!
chainstretcher
4/16/2006 2:47:39 PM
Well that's an odd place to be putting a sticker. Try running the 87 and if you have some knocking then move up a grade at a time.
uansari1
4/16/2006 5:51:06 PM
haha, yeah that's what I thought. I'm going to stick with 93 right now since I'm running a lot of carb cleaner through. For those of you that don't know, most fuel system cleaners lower the octane a bit.
CBR600RRBLUE
4/16/2006 8:07:39 PM
A rule of thumb, higher compression the higher the octane, with proper fuel mapping or jetting.
uansari1
4/17/2006 11:21:47 AM
Have you read any of this thread? All of our bikes are high compression, however the manufacturer has built them for lower octane fuel. As a general rule of thumb, I suppose you're right... but that applies to cars moreso than bikes. Larger/heavier internals lead to more friction area, leads to more heat, means a higher propensity for pre-detonation.
Tahoe SC
4/17/2006 12:45:35 PM
pssssss...i got a secret...he said...."with propoer fuel mapping or jetting"...i'm sure he meant some timing too.
philly
4/17/2006 3:02:20 PM
Just out of interest, how much does gas cost in the US? At the mo here in England we are paying about £0.93p a litre - that's about $1.65 a litre in your money. Our premium is around £0.99p a litre - that's about $1.75 in your money. We are getting seriously ripped off here!
chainstretcher
4/17/2006 3:22:53 PM
$2.70 a gallon for 87 / $2.90 for 93
That'd be around 73 cents a liter. You guys are getting raped
Tahoe SC
4/17/2006 3:47:41 PM
they don't have government subsidizing gas taxes like we do...if we really pay for gas all by ourselves, without uncle sam's help...it'll be at least $5 per gallon.
philly
4/18/2006 3:35:35 AM
Now i'm really sick. It's too much!
DonnythaBrick
5/4/2006 11:40:37 AM
i dont know about you guys but i ride my bike how its designed, near mach speed. i go to track days and whatnot all the time. just recently i went to jennings gp. they were selling like 130 oct fuel. bit much if you ask me but hey, whatever. i run 93 in my bike cause im always in 10k - 14k rpm. at the track i ran out of fuel so i had to buy theirs for an arm and a leg, and it did make a differance. about 600 miles at 12k+ rpm. the bike ran smoother and more responsive. im gonna stay at 93 altho the manual says 87 or whatever because all the websites about fuel say "high compresion blah blah blah HIGH REVING" and i do alot of that. theres no way i want my motor to start knocking before im done with it
