Octane

[Gsebring]

A direct result of running lower octane than recommended by the manufacturer.
Your looking at a destroyed piston from my jet ski. The screw driver is pointing at a compression ring exposed. All 4 destroyed. Direct result of 87 octane instead of 91.
Lesson learned from experience. Just my 2 cents

 

[Bob Denman]

Ok!

Oil, Rotella T6 in the triples
Tires, Yokohama
Helmet, of course
Speed Limit is a suggestion
All the gear, all the time.

If anyone does not agree with the above, your just wrong. Give up and get on board.


:joke:

:clap:

 

[jcthorne]

The blue bykes must cause an attitude of tyranny, but since I do NOT yet own a 1330, hey I will just agree with Mr. Attitude here!

Joe

Wife
says I had the problem long before getting a blue bike

 

[PMK]

View attachment 142701View attachment 142702
A direct result of running lower octane than recommended by the manufacturer.
Your looking at a destroyed piston from my jet ski. The screw driver is pointing at a compression ring exposed. All 4 destroyed. Direct result of 87 octane instead of 91.
Lesson learned from experience. Just my 2 cents

It happens and is real, whether folks here believe it or not, that is up to them. Saving money on cheaper gas may work, but the results can be as shown if the stars don't align. Bummer about the ski. Often destroys the crank too. Pretty expensive fix.

 

[Bob Denman]

:agree: Most of us are riding Spyders that cost more than a lot of cars that are out there...
If we couldn't afford to put the fuel in them, that is suggested by the manufacturer; why did we spend the money?
This is about like putting retreads on a Corvette...:banghead:

:shocked: Oh no... did I just start another tire thread? :bdh:

 

[RykerUSA]

Another blue bike

Last summer I took my blue bike out west ('15 ST Limited). I toyed with running different in different tanks of gas. I ran each tank down to fumes before refilling. 92 octane got noticeably better gas mileage then 87 at interstate speeds - that is 26 - 27 miles a gallon vs 32-33 miles a gallon. This seems to confirm what's written above regarding performance and efficiency running lower octane fuel than specified.

Always here to fuel the debate!

 

[Lew L]

Compression ratio?????

I think that compression ration has a lot to do with proper octane requirement of a motor. Soooooooooo---------

What is the comp. ratio of the 1330 motor?????

Kaos

 

[BLUEKNIGHT911]

THIS DAMAGE

View attachment 142701View attachment 142702
A direct result of running lower octane than recommended by the manufacturer.
Your looking at a destroyed piston from my jet ski. The screw driver is pointing at a compression ring exposed. All 4 destroyed. Direct result of 87 octane instead of 91.
Lesson learned from experience. Just my 2 cents

I would like to know - Brand , year , 2 or 4 stroke , size ......... Thank you .................. Mike :thumbup:

 

[Gsebring]

my ski

KNIGHT911;1219549]I would like to know - Brand , year , 2 or 4 stroke , size ......... Thank you .................. Mike :thumbup:[/QUOTE]

Kawasaki 12-f 4 stroke 1200cc.
Never can figure out how to rotate pics.

 

[GOZFST]

A hundred years ago when my wife and I used to road race motorcycles we both ran high performance 2 stokes, she ran a Yamaha TA-125 and I ran a TZ 350 you could melt pistons before you got to the first corner at Brainerd Int'l Raceway or Road America if you used nothing but race gas, BUTT those were the days before computers controlled ignition timing and fuel. 2 degrees before top center was fine anything more aggressive and you'd melt the exhaust edge of the pistons again. Modern technology has done wonders for engine performance.

 

[Bob Denman]

I think that compression ration has a lot to do with proper octane requirement of a motor. Soooooooooo---------

What is the comp. ratio of the 1330 motor?????
Kaos

12:1 :thumbup:

The 990 bikes ran 10.8:1
The 991s gave everything a 12.2:1 squeeze...

 

[BLUEKNIGHT911]

1200 F MOTOR

KNIGHT911;1219549]I would like to know - Brand , year , 2 or 4 stroke , size ......... Thank you .................. Mike :thumbup:

View attachment 142759 Kawasaki 12-f 4 stroke 1200cc.
Never can figure out how to rotate pics.[/QUOTE]
Thanks for the info - however ... the last year I could find for this motor in a water craft was 2007 !!! .... what year was your PWC ??? ......... Mike :thumbup::thumbup:

 

[Fat Baxter]

Some of you said you run on 91 octane. Where do you get that? Is that a regional thing?

Down here in the Southeast, the options are 87, 89, and 93. Lately, I've been running 89 as an experiment instead of 93, and haven't noticed any issues. Mileage seems unaffected as well.

 

[Bob Denman]

We only have access to 93 octane up here, and that's what I run. :thumbup: