I'm not trying to be confrontational with anyone !

So long as we can keep things on a technical level and talk abot the mecanical and tuning issues I am sure we will have no modertaor problems what so ever

I am not trying to insult anyone - I just question the rationality of your stated goal to run 93 ocatne fuel

I strongly belive people who are running high boost 2.0 L turbo cars should run at least 100 octane unleaded fuel - you guys disagree - its OK that we disagree - no reason to insult anyone !!!!!

I also change my oil every 500 miles - I just have certain opinions about how to run these cars and what you can and can't do

Saying your goal is making 500 whp on a 4g63 with 93 octane is just something that really gets you a LOT of heated discussion

 

I agree with you al..I think its a far reach...but with the aquamist it should go well into the 500s..which is about as hairy as i want to get on a street car...that Ill probably pick my mother up at that airport in when she comes to visit..ahahahah

Once i hit this goal and get the driveability (and the full cusco chassis kit, cant see this not twisting with all that power) there wont be much else im gonna do to this car other than enjoy it..but Im sure this time next year u will be close to 1000hp...

 

Pesto360, there is no need to apologize to us. We understand how the internet is. We're just glad to be of service to you and all the other evo owners who choose to give us the opportunity.

 

I am not trying to make any more HP than the 460 to the wheels I have determined to be the safe limit for my purposes

After calculating the forces on the drivetrain, and assessing the limitations of the same - I feel that is a good power level for my daily driver

NOT to mention the fact that the stock fuel line can not flow enough fuel to make more HP reliably and I have NO intention of monekying with the fuel lines and pump location as I did with my STI I had before

Basically - I am done with the car - just looking to refine it now - make it more stock like in feel and get rids of a few minor bugs - maybe add a cat to get rid of the smell

I am conifdent that I will soon run a 10 sec time slip with my car as it stands now and that is fast enough for me

 

Hey Pesto, I have a question for you about your aqua mist system. Are you going to try to use large droplets or smaller ones. I was wondering if you are trying to take some of the heat out of the combustion chamber, or what. Also, how long does the aquamist system take to run empty? I thought that most times it was good for like 2 tanks of gas, but I could be way off. Also, where is the aquamist delivered? is it in the intake manifold, or further downstream? I can't remmeber all of the details about these systems, but I know enough to know that they are better than NOS. Also, how much extra boost do you think you can run when using this system? Thanks for the input.

 

Im back, Sorry if It wasent sooner, Al you are more than welcome
to stop by the shop when you come down to florida. As I said before I'm not here to argue with anyone, nore am I here to offend anyone either. I believe that we are all intitled to our
opinion. As for the boundries of the 4g63 engine, well thats all
in how you look at it. Lets take a look at a couple of things.
The 4g63 (in the evo) stock has 8.8:1 compression, has a
cylinder head that flows relativly well, and we will say it has
an intake, t-bodie & cams that are fair. From factory, they run
a small turbo, conservitive igniton, but they run as much 19psi
of boost dropping to somewhere around 16psi. All with full intent
of of running pump gas. We know with a small turbo upgrade, fuel
pump upgrade and cams you can make 350+/- a couple hp.
From what we have seen on the dyno you can make this kind of
power all day without any problems. ( on pump gas). And that
is usually at about 18 /19 psi. Now we take a little bit bigger turbo, a good exh header, get a good port job (I mean with flow #s ect), upgrade,valve diameter, a bigger throttle body, a fully ported good flowing intake and a very conservitive tune and your around 390-400whp at 19 psi. The block & crank will handle
well over 500 whp, we have done that with no propblems.
So where do the problems start ? fuel ? Timing ? Boost ? Most
people solve detonation problems by putting good fuel in it
and calling it a day. The main problem here is heat. If you can keep the heat down that pump gas will go alot farther than you
think. The water/alc injection is a really good solution for keeping
your air temps, intake temps and cylinder head temps down.
Plus we have seen 30+ hp at the same boost levels. But the
biggest one that most people don't pay attention to is compression. More compression more heat. I'll give you a tip,
lower the compression and you will be surprised what you can
do on pump gas. As Al said earlier in this thread, the power
curves from both cars look pretty similar, well I pretty sure
Al is not runnig 7.4:1 compression. Alot of people believe that
if you lower the compression that low that you will lose alot of
power. From the testing that we have done you only loose
about 3% on the bottom end, but the rewards in being able
to run more boost will give 10 times that in the mid & top.
Please understand that I'm not here to say you can run pump
gas for all aplications, but it is not as limited as people think
if the combination & tune are right. As for a bad load of gas,
that could be a problem even a 15 psi, 400 hp+ really has nothing
to do withit. But I guess thats one of the things that if it does
happen, having water/alc injection can only help. And a good
ecu with a knock sensor with programable values can make all
the difference in the world.


_______________

Frank@SFP

 

Please keep posting more information... These are the threads that make the forums worth it!

I'm really curious to see your aquamist setup...how your controlling it...how methanol is working as a fuel...etc. Hit us up! The only place to find this info is generally dsms, supra or buick guys...and only the supra guys have taken it high-tech. See derekdevises.com. Rock on SFP!

 

Hello 5starsuzuki, Thanks for the comments,
The aquamist setup we use is pretty simple really. If you are not using a standalone to controll it, you can use a hobb switch and
have it turn on by boost pressure. We usually have it come on
above 5 psi of boost as it richens the fuel curve up quite a bit,
by doing this this way its easier to keep the fuel map flat,
and it will not affect your part throttle fuel. It does cool the
charge alot, and it also cools the combustion chamber. It also
raises the octane to some degree I cant tell you exactly how
much it raises it because it is mixed with distilled water, but it
does raise it. Plus you can change jet sizes to suit.
Thats pretty much the short end of it. If you want some detailed
info, I can email it to you. Just send me an email at frank@sfp.net
Oh by the way depending on the jet size most of our customers
have a 2 gallon tank, or they use there wiper tank. The two gallon tank usually lasts about 3-4 weeks with a 4mm jet (average size).

Hope this helps
Frank@sfp

 

What happened to that thread you started that talked about the turbo upgrades you will be selling soon? I asked some questions in that thread, but when I looked for it again, it was gone!

Thanks,

Keith

 

Because if you can do it and do it safely, then you've got a bad *** car that you can drive more than 180 miles without sweating because you don't know where you're going to get that next 100 octane (or C-16???) fill-up.

You have posted time and time again that you don't want to tune your car to the "ragged edge" because you want a safe daily driver, but what price safety? Drums of leaded fuel sitting in your toolshed? A gas tank tether to home base? You've thought through engine safety but what about practicality safety?

... assuming you always have a supply on hand or a nearby station to get it!

 

Worth the wait - thanks for the insights and sharing your 4G63 experience.

 

Keith, I guess because we were not a paying advertiser it wasn't fair to the other vendors on the page. (understandable) I can PM you a list in the mean time but it should be back up as soon as we start an advertising campaign here.

 

Go ahead and PM me and then I will remember my questions and PM them back to you

Keith

 

Welcome Frank... and this is why you are the only one to touch my car :-) Keep educating us Professor Smith

 

Nice to come back and find this thread turned back around... it had gotten real ****ty. Now people can learn something here.