GOZR
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GOZR
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posted June 11, 2003 03:27 PM
 Edited By: GOZR on 11 Jun 2003 16:29
87 or 92 oct gas ?
Someone wrote this..
I picked up a consistant .05 to .1 in the 1/4 mile and 2 to 3 MPH
Just run all the sunoco 94 out until the bike shuts off and fill with 87 and hit the track.
cheapest easyest performance gain you will ever get.
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For me:
On my older jeep i have also better result when running 87..
Vincenthill maybe it's the 2 or 3 mph you're missing 
Your opinion on it?
Also:
http://www.eric-gorr.com/techarticles/Fuel_Basics.htm
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-G
  
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GOZR
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posted June 11, 2003 03:37 PM
Shit i'm running 92 i'm thinking trying 87 now.....
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your car is slow
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posted June 11, 2003 05:47 PM
You should always run the lowest octane fuel you can....without the motor experiencing detonation.
Any usage of higher octane fuel will rob you of power....as the higher the octane rating of the fuel...the slower it burns.
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dougmeyer
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posted June 12, 2003 07:25 AM
Keep in mind, you guys, that by the time you hear the detonation at high speed/load (especially on the dyno) it's already doing damage. You can get away with "incipient" detonation (which you can't hear) for a long while, but you will be losing power while this is occuring. I think 87 is pushing it, especially at high air temperatures. YCIS you're right, but the trick is to know when it is occuring. Without a knock sensor you're left to hearing it or looking at the damaged. parts.
Doug
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your car is slow
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Fuck Nitrous...Got Boost?
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posted June 12, 2003 07:35 AM
Good point...I was being lazy
Id read a few places that most of the stock motor guys ran 87 at the dragstrip (well..before nutech came along anyway). I think Rickey Gadsen was one of them.
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ninja12
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posted June 12, 2003 07:46 AM
Doug,
What fuel do you recommend for stock engines with timing added?
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hotrodninja
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posted June 12, 2003 09:31 AM
Myself, I always run at least 91 to be safe. Any lower and you could be taking a risk of damage, especially with timing advance added. The guys at the track putting high octane racing fuel in their street bikes always makes me laugh.
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GOZR
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posted June 12, 2003 09:34 AM
SO 89 would be the best choice and safer?
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dougmeyer
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posted June 12, 2003 09:51 AM
We always test with pump 92. All our published figures on naturally aspirated stuff is with pump 92 and we consistantly see best power with that. We don't have 91 around here, but I suppose that would be close.
Doug
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TedG
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posted June 12, 2003 10:23 AM
At high altitude I run the lower octane, when I drop in altitude I will run the higher stuff. Bike seems to run much better at altitude with the lower octane.
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GOZR
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posted June 12, 2003 09:48 PM
so 89?
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dougmeyer
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posted June 13, 2003 03:00 PM
So no, 92
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GOZR
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posted June 13, 2003 03:04 PM
k
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zx12rpilot
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posted June 14, 2003 08:07 PM
Anyone else experience detonation, even with 91??? Happens most on hot days, bike hot. '02 12r, 4500 mi. ????
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ZHooligan
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posted June 14, 2003 09:19 PM
If you are having detonation issues with Prem. fuel then it is time to look at backing down on your timing and or going to race fuel.
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sprintzx12r
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posted June 16, 2003 08:32 PM
Nutech
Where can you get some info on Nutech fuel? Tried looking on the web but couldn't find anything.
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ZHooligan
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posted June 16, 2003 08:58 PM
Nutec is the corect spelling. I buy my fuel from MVR Racing in Bremerton, WA. Not sure of your location. If I recall Spencercycle one of our board advertisers also sells it. So check them out.
A 15 gallon barrel runs about 250 these days. Best horsepower in a can available!
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TurboBlew
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posted June 17, 2003 03:58 AM
Yeah, but you cant store it in the bike for very long. 
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EastBayDave
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posted June 17, 2003 06:18 AM
I do believe there is a sticker on the bike someplace saying "minimum 90 octane?"
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EastBayDave
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posted June 17, 2003 06:20 AM
Edited By: EastBayDave on 17 Jun 2003 07:20
Oh, & BTW Gozr, you can drive into ERC's home base in San Lorenzo & either fill your tank w/the racegas of your choice, or rent a can from them for trips to the track.
If I remember correctly, ERC is the required gas at some events (Bonneville? Doug?) I typically run 103 unleaded when I'm heading to the track...
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GOZR
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posted June 17, 2003 06:50 AM
I used to have always 110 octane in the garage when i raced Gokarts...
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Roger
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posted June 17, 2003 07:47 AM
ZHoligan, have you tried VP-Ultimate 4? I've used NutecS4 in previous bikes, but haven't done any dyno tests in the 12R with pump, VP, and Nutec.
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ZHooligan
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posted June 17, 2003 10:46 AM
If I remember Nutec is up to 5 now. But toanswer your question no. However I ordered a couple of barrels of VP's new equiv. to the latest Nutec last week. Should be in sometime this week.
One interesting thing I have found with some fuels specifically Trick Racing gas is that when running it my 12 shutters under full acceleration and actually stumbles at about 9,000 rpm. not sure why but it hates Trick. And frankly my 1380 Blackbird did the same. Not sure why, but I stay clear of Trick.
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EastBayDave
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posted June 18, 2003 05:40 AM
quote:
If I remember Nutec is up to 5 now. But toanswer your question no. However I ordered a couple of barrels of VP's new equiv. to the latest Nutec last week. Should be in sometime this week.
One interesting thing I have found with some fuels specifically Trick Racing gas is that when running it my 12 shutters under full acceleration and actually stumbles at about 9,000 rpm. not sure why but it hates Trick. And frankly my 1380 Blackbird did the same. Not sure why, but I stay clear of Trick.
I've used Trick too; but I had a different problem.
When pulling carbs down (roadrace KZ1000), I discovered Trick left this red powder residue in the float bowls. Later, I discoverd this red powder all over the fuel system. AFter cleaning it out several times....I gave up on Trick.
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Enjoy the ride!
02' ZRX1200
00' ZX12R sold
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