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-   -   471rwhp/300rwtq at 13psi on E85!!!!!! (https://www.rx7club.com/alternative-fuels-249/471rwhp-300rwtq-13psi-e85-714725/)

frode 12-23-07 11:34 AM


Originally Posted by zinx (Post 7656825)
Do you think it will take a stronger ignition system to ignite it for the same boost level?

Yes it will. At least thats our conclusion on the other side of the globe.

However, when you are running at these boost levels you should really have a CD ignition anyways :)

frode 12-23-07 11:36 AM


Originally Posted by 93rotorhead (Post 7657004)
does it have any effects on AFR ? do I have to add more fuel?

Yes you will have to add somewhere between 30% and 40% fuel, depending on load and rpm.

Starting in cold weather (-10C) will also need LOTS of fuel.

Viking War Hammer 12-24-07 01:43 PM

Crispeed, were you using true E85 or were you using a winter mix ?

crispeed 12-24-07 03:43 PM


Originally Posted by Viking War Hammer (Post 7660651)
Crispeed, were you using true E85 or were you using a winter mix ?

E85.

Viking War Hammer 12-24-07 03:55 PM


Originally Posted by crispeed (Post 7661013)
E85.

Sorry, I should have known............. there's no such thing as winter in miami :wallbash:

crispeed 12-24-07 04:00 PM


Originally Posted by Viking War Hammer (Post 7661054)
Sorry, I should have known............. there's no such thing as winter in miami :wallbash:

Sometimes it feels like winter like this morning.! :rlaugh:
When it get into the 60's here that's cold enough for me. :lol:

frode 12-24-07 04:53 PM


Originally Posted by crispeed (Post 7661077)
Sometimes it feels like winter like this morning.! :rlaugh:
When it get into the 60's here that's cold enough for me. :lol:

This morning it was 10 degrees at my house... :)

Merry Christmas!

ErnieT 12-24-07 05:33 PM

Congrats on the numbers Cris. Has this car ever seen the drag strip??

crispeed 12-24-07 05:50 PM


Originally Posted by ErnieT (Post 7661341)
Congrats on the numbers Cris. Has this car ever seen the drag strip??

This car will never see the dragstrip unless it's probably a private track rental and even then it's more than likely to break something in the drivetrain. You know how that goes.
It's all about having fun on the street.

MERRY CHRISTMAS everyone.

Viking War Hammer 12-24-07 07:48 PM


Originally Posted by crispeed (Post 7661383)
This car will never see the dragstrip unless it's probably a private track rental and even then it's more than likely to break something in the drivetrain. You know how that goes.
It's all about having fun on the street.

MERRY CHRISTMAS everyone.

I know how it is............... you won't see a "true streetcar" ever at a track. A true streetcar won't pass tech. "true streetcars" don't have jungle gyms and that FD would need one ! :lol2: :icon_tup:

Merry Christmas !

13B-RX3 12-24-07 07:50 PM

VIDS or BS!!!!!

Oh and Merry Christmas.

crispeed 12-24-07 08:49 PM


Originally Posted by 13B-RX3 (Post 7661619)
VIDS or BS!!!!!

Oh and Merry Christmas.

Check your pm's!

salva 01-09-08 08:05 AM

Hey Chris, have you worked on the base map and if so does it seem to be ingesting more than usual at idle/cruise than it did before? How does it compare to regular 93 in your experience (fuel consumtionwise)?

BTW are you going to be up north any time this week?

Viking War Hammer 01-09-08 07:07 PM

E85 Dyno Challenge Video: http://www.powertvonline.com/dynomax

The person in last place made 1,200 whp.

ZAN_TUNING 01-09-08 08:43 PM

^^ wrong video?

Viking War Hammer 01-09-08 08:43 PM


Originally Posted by Intense_Motorsports (Post 7720251)
^^ wrong video?

No, you have to watch it all the way through. It's a few different videos back to back.

mikewoodkozar 01-09-08 08:49 PM

i lost interest listening to that "woman" talk about mustang mufflers :(

weaklink 01-09-08 09:37 PM

I don't get the whole e85 thing. You have to burn more of it to get the same power, so it pretty much negates any cost savings. Is it that it doesn't detonate as easily?

diabolical1 01-09-08 10:47 PM

pretty impressive result. i'll definitely be keeping my eyes open for more.

jantore 01-10-08 02:59 AM


Originally Posted by weaklink (Post 7720475)
I don't get the whole e85 thing. You have to burn more of it to get the same power, so it pretty much negates any cost savings. Is it that it doesn't detonate as easily?

eh what do u think. E85 has a verry high octane lvl. don't remember the excact number in my head. but it's high and yes it does not detonate.

and it's better then most racefuels that are 4-5 times the price. so it's def worth using compeard to race fuel.

JT

salva 01-10-08 06:03 AM

Def worth using compared to race fuels and pretty soon the way gas prices are going up (news reports say it will go up another $.75 by spring) it will be the deffinate alternative! I don't understand why everyone else doesn't jump on the ethanol bandwagon(Mazda, Toyota, Nissan).

Howard Coleman 01-10-08 06:57 AM

E85 is really all about alcohol.

alcohol in it's 3 forms, methanol, ethanol and isopropyl is a completely different animal than gasoline. to the point that it doesn't even mix w gas... so, for example you can't just add some to your gas tank like you can add racegas.

yes, there's less energy per volume in alcohol so you have to run more of it.

the reason you should give it a look is that if you do elect to use it you will gain certain important advantages V gasoline.

gasoline auto ignites at 660 F. that's for race gas and pump.

alcohol autoignites at 858 F.

one of the engine killers in the turbo'd rotary is autoignition and alcohol delivers another 200 degrees of cushion.

alcohol "flashes" atomizes/mixes w the charge air immediately and provides great instantaneous cooling. my upper intake manifold after a 2000-8000 4th gear dyno run is very very cold to the touch. imagine how cold the air is going into the motor. any tuner will tell you that one of the most important metrics as to engine life while on boost is the temperature of the incoming air. w alcohol it is literally frigid.

alcohol has a high octane rating. the problem w coming up w the number (there are many) is that octane is rated at a certain temperature and pressure and it is imposssible to get alcohol up to that temperature due to it's cooling properties.

so even though you have to run a bit more it transforms the dynamic metrics of the air and fuel going thru the motor to the point you can really crank up the boost and the engine is happier (less knock) than at lower boost levels on gas.

i run alcohol (methanol) as an addition to pump gas. see the Auxiliary Injection section. i can also see the merits of running E85.

Alcohol, it's not just what's for dinner.

howard coleman

jantore 01-10-08 09:22 AM

Nice writeup howard. Im so looking forward to dynoing my T04Z with E85 and 30 psi off boost :)

Here E85 is about 40% cheaper then the 99 V-Power fuel i would be using if would run normal gas. Or Race fuel that is 4 times more expensive then the 99 V-Power.

E85 here cost about 5.85 USD pr gallon, and normal 99 V-Power is about 9,09 USD pr gallon. And 102 octan race fuel is about 26,5 USD a gallon. So E85 is the only solution to keep the fuel cheap. Even tho i will use more fuel, and will need to uppgrade the fuel system.

Will be running 6x1680cc injectors.

Viper GTSR 01-10-08 12:31 PM

30PSI from a T04Z ?? Do you have a street port or bridge port as well? I thought the T04Z was pretty much maxxed out by ~28PSI on a ported 13B...

Keep us posted on your results* :icon_tup:


Originally Posted by jantore (Post 7722146)
Nice writeup howard. Im so looking forward to dynoing my T04Z with E85 and 30 psi off boost :)

Here E85 is about 40% cheaper then the 99 V-Power fuel i would be using if would run normal gas. Or Race fuel that is 4 times more expensive then the 99 V-Power.

E85 here cost about 5.85 USD pr gallon, and normal 99 V-Power is about 9,09 USD pr gallon. And 102 octan race fuel is about 26,5 USD a gallon. So E85 is the only solution to keep the fuel cheap. Even tho i will use more fuel, and will need to uppgrade the fuel system.

Will be running 6x1680cc injectors.


classicauto 01-10-08 12:54 PM


Originally Posted by howard coleman (Post 7721870)
E85 is really all about alcohol.

alcohol in it's 3 forms, methanol, ethanol and isopropyl is a completely different animal than gasoline. to the point that it doesn't even mix w gas... so, for example you can't just add some to your gas tank like you can add racegas.

yes, there's less energy per volume in alcohol so you have to run more of it.

the reason you should give it a look is that if you do elect to use it you will gain certain important advantages V gasoline.

gasoline auto ignites at 660 F. that's for race gas and pump.

alcohol autoignites at 858 F.

one of the engine killers in the turbo'd rotary is autoignition and alcohol delivers another 200 degrees of cushion.

alcohol "flashes" atomizes/mixes w the charge air immediately and provides great instantaneous cooling. my upper intake manifold after a 2000-8000 4th gear dyno run is very very cold to the touch. imagine how cold the air is going into the motor. any tuner will tell you that one of the most important metrics as to engine life while on boost is the temperature of the incoming air. w alcohol it is literally frigid.

alcohol has a high octane rating. the problem w coming up w the number (there are many) is that octane is rated at a certain temperature and pressure and it is imposssible to get alcohol up to that temperature due to it's cooling properties.

so even though you have to run a bit more it transforms the dynamic metrics of the air and fuel going thru the motor to the point you can really crank up the boost and the engine is happier (less knock) than at lower boost levels on gas.

i run alcohol (methanol) as an addition to pump gas. see the Auxiliary Injection section. i can also see the merits of running E85.

Alcohol, it's not just what's for dinner.

howard coleman

Excellent points Howard.

How much do you think the additional volume itself is affecting the cooling capability of the fuel?

In layman's terms, the alky nature of the gas is providing better cooling, yes, but how much of that extra cooling is additional volume alone responsible for?

Its really a moot point since whichever way it skins the cat, it sure does skin 'em, but I've thought about this aspect for a while and figured I'd ask now that we have some preliminary results.


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