Tuning N/A 110 octane
 

Has anybody have or heard of getting there 370z tuned on 110 octane on a n/a motor? Just an idea...hummm?? I will try this just out of curiosity. Yes this is a leaded fuel so there is a possibility of damage to the o2 sensors but i have no cats so no problem there. I even might mess with some oxygenated fuels also... results in the near future.

YouTube - XXX Race Gas gains 14whp on stock 370z

i saw this on youtube, dont really know if it helps but this is what came to mind..there are more detail on thier website about it too

GZ3 good find!! thanks

Can you just run that stock, or do you have to have a tune for it??? Also I know its off topic, but whats with the low baseline 72hp loss DAMMMM

all dynos are different, dont look at the numbers just the difference.

I'd rather put in a good pump and injectors and run E85 and use a map switching function to switch from E85 to 93. NA could probably just get away with a drop in Walbro.

Hmm. 3 bucks a gallon, vs. what, 12 bucks a gallon? More than likely make more power too.

less power ethanol is 10% less volitale than gasoline. you could push the timing but you'd never get all the power or milage back. FI it has merits just because of cheap high octane. You still make less power per unit of fuel but with a turbo you just shove in more air and more fuel and the higher octane makes up for it. i plan to stick with the readilly available stuff so i'm mixing 5% toluene in premium. and thinking of adding in some MMT and ferosene.

Use xylene if you're going to do that. Toluene is 114 octane while Xylene is 117 octane and they cost nearly the same. If you do mix that in it's a good idea to put in around 3 oz of Marvel Mystery Oil with your toluene/xylene.

I've run a high amount of xylene in both my 06 gti with a apr s3 turbo kit on 100 octane mode and my '86 944 turbo with a t04e 50 trim at 23 psi. It really does work wonders when mixed properly.

They used xylene in F1 back in the day when they could use turbos. They actually ran 86% or so xylene and the rest filler to meet the octane requirements back then.


As far as E85 goes, you could indeed use it to great advantage in a NA car. However, you would need to raise the compression ratio quite high for it to be worth it. I think I've seen 13.5-14:1 C/R with E85 all motor. Otherwise the timing advance, like previously mentioned, just won't be enough. Too advanced of timing doesn't do anyone any good no matter what fuel you're running.

exactly high compression would do it but i think the prospect of this thread so far is more of without having to rebuild the engine to do it. If your going that far then just throw in some 2000cc injectors and run nitro. Also do NOT run methane as the main fuel in our cars, it doesn't agree with an all aluminum motor.

also where do u get your xylene, can i pick it up at sherwin williams? they carry automotive grade toluene for $33 in the 5 gallon

I have also be messing with naphthalene. It droppes the fuel temp around 25-35 degress plus quite volatile, but is seems to have residue.

All this fuel has really got me thinking as i was racing nat the sport compact nationals this past weekend, and i needed fuel. All they had was 110 leaded, yes i know leaded fuel can wipeout my o2's. So I threw in a couple gallons to mix with my 93. At 2:30 in the afternoon I did a pass @ 12.30 @112. I typically run a 111 mph @ night time when its cool. So the only variable is the fuel and calculated it at around 3% hp increase without proper tuning. For every 10 degrees ambient temp change its about 1 % hp loss or gain.

Yep, Sherwin Williams. Here in Texas they sell it for 10 bucks a gallon when you start an account with them. So nowhere near as cheap as $33 for 5 gallons, but still a good price now a days.

If you're feeling really adventurous you could mix in some nitromethane...

I guess the big question is how much extra advance could you coax out of the motor with 110? Worth a try, I suppose

not worth a try without larger injectors or at the bare minimum uprev. you'll be running lean instantly.

What -- just with high octane? Anything with a high O2 content, sure, but just high octane shouldn't do that.

I just don't think there's more than another 1-2 degrees to get out of the timing -- I think it's pretty close to optimal as is. Maybe if valve timing could also be adjusted.

going to the dyno thursday, with a few different fuels.

I think he was talking about nitromethane. That's funny stuff. Do that on this engine and this is what will happen.. :roflpuke2:

Every fuel has it's place.

Regarding additives; has anyone pulled the plugs to ensure they aren't leaving deposits? You know, I just had a Mustang the other day, ALL 4 o2's were smoked because the previous tuner told them that additives are ok. I am all about more hp, but I've seen time and time again o2's smoked when running an additive. I never really kept up with which ones are harmful, I know there are some with a hint of... I believe manganese (?) and I want to say, the Torco blended additive ruins o2 sensors also (I know there's more) I would say, if you want, and I hate to say it, use pure methanol and a methanol injection kit. (racing methanol, not denatured alcohol like I used to run) M-1,5 or whatever. Keep it on a switch and have UPrev map switching function for a separate map. There all the time for when someone is talking trash... :)

Unlike a TURBO car, if your kit cuts out you just loose a bit of power assuming you aren't running insane timing. I'll never use meth injection on a turbo car again. Too risky.

What do you guys think? I'd love to see someone try this for a back to back comparison.

toluene is factory component of pump gas, it's safe, yes nitromethane brings it's own oxygen to the party so you have to run huge amounts of it to stay rich, i wouldn't recomend using straight methanol as the main fuel as it corroids all aluminum engines but it should be fine for turbo injection systems(which really should be used on cars with a tuning solution that can tell when it's out of meth/water and pull timing for you like an fcon)

Personally I'd like a twin pump FI set up on E85 or an Aquamist set up.....

Alas,that is a ways off....
Interested in ur numbers with untuned numbers on different fuels, thx Jnaut for the effort.

i never made it to the tune as i broke the clutch... now its sitting in the back of the shop...maybe some time ill have to fix it????

Bad luck dude...

nahh. that's just a good excuse to upgrade..

Thats Wife code right there....lol

I have 180 miles on new clutch and flywheel broke... hummmm prolly going to sell the clutch and go with o.s.giken clutch/flywheel

HOLY SHEEEAT. What happened to your flywheel? How much power are you making? How many RPM's are you turning?

Was it installed improperly?

I HAVE seen it done before. I JUST TOOK A GTR apart from some other shop and the dowels weren't even in the designated holes on the flex plate damper ..soooo

wayne, i have a shop here locally. I have installed many flywheel/chutches lol. Have you ever seen the bolts that hold flywheel to the crank? its a t55 torx, not a typically 14mm or 17mm head bold. There is no washer and the head on the t55 is so small , that the contact patch that it hits on the aluminum. After time and time again of burnout/ holeshots the aluminum get fatigued. Then the flywheel can move in the bolt holes, eventually causing the bolts to shear off in the crank. Its pretty hard to install the flywheel incorrectly hahahaha. I replaced the bolts with factory one , applied red loctite torqued to factory specs and it still came apart. time for O.S. Giken...

nahh. I say buy the last clutch you will ever need.

TILTON.

Toluene = 114 oct.
Xylene = 117 oct.
Both are aromatic hydrocarbons.
You decide.
:ugh2:

don't :ugh2: me, we mainly came down to the cost issue and for 5gals toluene is around 40% cheaper