[richw]

Ok so now I have my Gixxer

It takes premium fuel 90 octane no I don't care about the extra 20 cents.

Who knows how a multi type fuel pump with a single hose works.

How much fuel from the last guy is still in the mechanism ?

I calculate that 15 feet of 3/4 hose is about 1/3 of a gallon. Not so bad but I have no idea how much other stuff is going on.

There could be a whole other gallon in a pump housing easy. That would mean a top off and you'ld have nothing but regular.

Does anybody here know ?
Please feel free to vent our usual theories but if somebody KNOWS lets hear from them

Or should we just buy 101 octane and regular

[HBerry]

Originally posted by richw
Ok so now I have my Gixxer

It takes premium fuel 90 octane no I don't care about the extra 20 cents.

Who knows how a multi type fuel pump with a single hose works.

How much fuel from the last guy is still in the mechanism ?

I calculate that 15 feet of 3/4 hose is about 1/3 of a gallon. Not so bad but I have no idea how much other stuff is going on.

There could be a whole other gallon in a pump housing easy. That would mean a top off and you'ld have nothing but regular.

Does anybody here know ?
Please feel free to vent our usual theories but if somebody KNOWS lets hear from them

Or should we just buy 101 octane and regular

I always wondered the same thing, but I never put enough time in it to think about it.

[RandyO]

if your worried about what's in the hose, your fucking ANAL , get a life

[snowborder]

whilst you are at figuring that out...... why not go to Suzuki and ask them for a refund for false advertising a Gixxer 1000 when in fact it is only 998.6cc. I wonder how much faster it would be with those 1.4 added cc's.

Just use 87 octane cause the fuggin thing will outlast you anyways.

By the way out in Utah they sell 85 Octane everywhere. I wonder the same question and just use 85.

[HBerry]

Originally posted by RandyO
if your worried about what's in the hose, your fucking ANAL , get a life

I think its more the fact that your paying 40 cents more a gallon for what your not getting is what he was wondering about!

[RandyO]

Originally posted by HBerry
I think its more the fact that your paying 40 cents more a gallon for what your not getting is what he was wondering about!

have you ever drained a gas pump hose recently? see snowboarders post

[ChR1s]

Go to a station with a dedicated pump. The rest use mixing, and you are paying for the person following you to dump some premium into their tank while you fill yours with 87.

Lots of bikes ping w/o higher octane, some people just can't tell the difference. Pinging that's noticeble is very damaging. I could run 87 in my turbo, but only because the knock sensor will retard the timing so it won't blow a piston. Sure, it will run...

Yes, it does warrant a class action lawsuit.

[JeffL]

Do you have any idea how long 15 feet is, the hoses at the pump are 8-9 max, I could measure, we have a few new pumps at work in the warehouse, so now your 1/3 gallon drops to 1/5 of a gallon. How much fits in a tank? 3-4 gallons, or not even that much? For the sake of argument, call it 3 gallons. So if you put 1/5 of a gallon of 87 in your tank, whats it drop your octane rating? Like .0000000009?

I dont know how gasoline pump innards are exactly, but I cant imagine theres more than a few ounces of fuel in one at any given time.

Just buy 93 and dont worry about it, it should offset the .000000000009 drop in octane from all that 87 in there.

[Bhavesh]

You guys are tools.

I brew my own gas at home performing the most meticulous titrations available to create the ultimate hydrocarbon (and select additive) mixture.

But even when I used 87 octane in the bike, from the local gas station, I don't notice a difference

[ssg]

Originally posted by richw
How much fuel from the last guy is still in the mechanism ?

Enough to make that big plant at the end of the fuel Island die if you use the same one to dump your first .5 gallon into every time.

Only gotta call hazmat if its over 5 gallons and the F.D. if you're careless. Much better solution then damaging your priceless machine of technology.

[JeffL]

Originally posted by somestrangeguy
Enough to make that big plant at the end of the fuel Island die if you use the same one to dump your first .5 gallon into every time.

Only gotta call hazmat if its over 5 gallons and the F.D. if you're careless. Much better solution then damaging your priceless machine of technology.

Someone at work told me he had this saying.........."there's never a spill (of fuel oil) bigger than 10 gallons *WINK*"

LOL

[RandyO]

to tell you the truth, I dont think there is ANY residual fuel in the hoses thes days.

years ago, yes, I remember the days you could go to a gas station when it was closed and collect a substantial amount of gas,

modern pumps have vapor recovery hoses and I know you can't drain anything from them like you used to, I've tried. maybe that's cause there isn't anything in there to drain

[ssg]

Originally posted by RandyO
modern pumps have vapor recovery hoses and I know you can't drain anything from them like you used to, I've tried. maybe that's cause there isn't anything in there to drain

from my very minute amount of knowledge on the topic..involving removal of said hoses from pump islands (with force) immediately following use, I'd actually have to agree.

But I beleive the reason you get nothing out of them afterhours is your not holding them high enough

[richw]

Now we all vented...
the compression ration of the gixxer is 12.5 to one.
there is a sticker for 90 plus octane on the tank.
don't know if it has a knock sensor
I usually used mid or premium anyway.

2 Mobil stations I passed had 3 hoses

There is a guy in my neighborhood with an MB5 so maybe I will just lurk and follow him till he tops off and swoop in to get my 1/3 gallon of high test

Note to the engineers among you I used the 15 foot figure because the filler goes overhead then back down to the pump/meter.

[ZX-12R]

When inspecting gasoline pumps where multiple grades are sourced through the same hose, NIST (National Institute of Standards and Technology) requires that 0.3 gallons be drawn off before taking a sample for quality checking to account for the residual mix that is in the hose.

If you are paranoid about the 0.3 gallons of regular that could be in there, look for the 3 nozzle pumps or the 2 nozzle pumps that have 1 blended nozzle and 1 dedicated super nozzle.

My average fillup is around 3.5 gallons. 0.3 gallons of regular represents about 8% of my total fillup so 93 octane takes the remaining 92%.

(93 octane * 92%) + (87 octane * 8%) = 92.52 octane

92.5 octane = Not much concern from me.


If I am nearly bone dry and I take a full 5 gallon fillup, the new ratios are 94% super and 6% regular.

(93 * 0.94) + (87 * 0.06) = 92.64 actane

92.6 octane = Even less concern from me

Q.E.D.

[richw]

Being the Nudge I am I just got a response from the CT dept of weights and measures.

He estimates that ther is 3. to .4 gallons in the whole pump mechanism remain from the previous user.

His octane test involves discarding the 1st 1/2 gallon.

He says your screwed and thats that.

SO if you don't have access to a pure high test don't top off unless your going to need at least 2 gallons.

[legalspeed]

So, all of you self appointed Einstiens; he is absolutely correct.

Another note: if you mix 100 octane and 90 octane, you do not get 95 octane, the chemicals do not work like that. You get a higher octane than 100 in this scenario.

Good work Rich, I never even thought about it. Your gixxer has knock sensors. If it did not, you would pre-detonate and run the risk of destroying your pistons (not you, the average Joe consumer).

[RandyO]

Originally posted by legalspeed
So, all of you self appointed Einstiens; he is absolutely correct.

Another note: if you mix 100 octane and 90 octane, you do not get 95 octane, the chemicals do not work like that. You get a higher octane than 100 in this scenario.

Good work Rich, I never even thought about it. Your gixxer has knock sensors. If it did not, you would pre-detonate and run the risk of destroying your pistons (not you, the average Joe consumer).

my bike take regular, does this mean I might be getting to high octane, and loosing some of my power potential caust it slows the burn

[richw]

Here I am blowing smoke but I do not believe that hi test or low test has anything to do with

"Flame front propogation speeds" so no.

In an old age when
"Men were men and the sheep were scared" There was a difference in the general quality and cleanliness of fuels but I do not think anymore. The EPA etc makes them all pretty much the same with perhaps a slight change in additive packages.

Now if he still does it in Yorktown New York on 202 there was a station that sold Cam 2 racing gas 110 octane at a pump. If my 2 wheel date K1000 milled, cam, smoothbores, ported went the extra mile I used to give here a treat. Might have made 90HP