Inject some alky.

 

Here is a link to the setup of a car that made 445hp on a Mustang dyno using pure CA 91. Mustang dyno's tend to read anywhere from 15-20% less than a dynojet. From my personal tuning experience, 2.0 engines do not easily make over 385AWHP straight CA 91. 400AWHP on a 2.3 or 2.4 is easy to achieve at 21-22psi with a gt3076 or gt35r with a .63 hotside with supporting mods. Reving any 4G63 combination past 8000 on CA 91 tends to produce knock, it doesn't matter 2.0l, 2.1l destroker.

http://www.fftec.com/CC3.html

Hope this info helps and good luck with the build.

 

How much boost you can run is all a matter of how well your combination of mods work together... How big the turbo, and its efficiency levels,
how big your fmic is. How you tune it ...

There is no set amount of boost for x amount of octane.
Every car will respond differently even with similar mods.

You will just have to find a known capable setup with your power level goals and find out what you need to do tuning wise to make a safe 400+ awhp without any serious detonation.

Like mentioned above, your best bet for keeping it easier is if you can get some type of water/ or methonal injection.
What is more attrative to me is if you have E85 local and a large enough fuel systems to support.

Anything bigger than a 20g should be able to get you to your goals without needing higher octane IF you get real hands on with the tuning aspect and make proper part selection down to the tee...

I must ask why are you aiming for 400 hp... Why does that number stick out?
Why not just aim for a certain speed or ET at the track?
Just because a car has 400 hp doesnt mean its fast if its too heavy or not set up right. Just focas on making your car fast, and not chasing a number if you know what i mean....

It can be done and has been. Good luck.

 

There are so many variables to 400WHP when 91 piss is used.

A very easy way to make 400 on 91 piss is to use a T4 GT42 and run it at very low boost levels. It will flow enough air at 15 PSI to push you well into the 400's. But it's not a response friendly turbo, but it will definitely get the job done. Even 20 PSI is 91 octane territory and you may be in the 500-600WHP range already with that turbo.

The big problem is, who installs a GT42 to get 400 WHP on 91 octane?

Also 1G VE is around 89% at 8000 RPM with cams similar to BC280's

 

Is there E85 in California? Sorry for my midwest ignorance, but if it's available to you, you may want to look into some e85. This should also help your knock count if you're having trouble with it. Also, get Link!

 

The reason I asked was that there are EVO's that run 400whp on 91 so I thought it is possible. I know the engines are not identical, but close enough to compare.

Also, i looked up E85 on google and it says that there a 6 gas stations with e85, 4 of which are public.

I don't want to go stroker, at least not yet. The only way I would go stroker is if I went with a 7bolt 4g64 block, but I really need to consider it more. I really want to get a 6 bolt, but that will only allow for me to get a 2.0 because money will be tight.

Thanks for the responses.

 

The reason I asked was that there are EVO's that run 400whp on 91 so I thought it is possible. I know the engines are not identical, but close enough to compare.

Also, i looked up E85 on google and it says that there a 6 gas stations with e85, 4 of which are public.

I don't want to go stroker, at least not yet. The only way I would go stroker is if I went with a 7bolt 4g64 block, but I really need to consider it more. I really want to get a 6 bolt, but that will only allow for me to get a 2.0 because money will be tight.

Thanks for the responses.

Keep your motor, take it easy for now. 400 is perfectly possible but not necessarily reasonable on a tight budget. Max out all your other mods, build up as much as you can, right before you slap on some 1000cc injectors get DSMlink and get used to tuning (if you don't already know how). Last thing you SHOULD do is a bigger turbo and built motor. Save up, pick up a 6 bolt block and if you really wanna go stroker build it when you have the cash. This is how it works in a perfect world, but we all have our own paths. just my .02

 

The reason I asked was that there are EVO's that run 400whp on 91 so I thought it is possible. I know the engines are not identical, but close enough to compare.

Also, i looked up E85 on google and it says that there a 6 gas stations with e85, 4 of which are public.

I don't want to go stroker, at least not yet. The only way I would go stroker is if I went with a 7bolt 4g64 block, but I really need to consider it more. I really want to get a 6 bolt, but that will only allow for me to get a 2.0 because money will be tight.

Thanks for the responses.

You dont really need a stroker to make good enough street torque as long as you stay with a reasonable turbo size and run a lot of boost to make the power.

With e85 you could make 400whp with a Big16g if you reallllly wanted to.

If your after torque on a 2.0 then get that new 20g and put a ported cyclone intake manifold, a FP exhaust manifold, all the rest of the best supporting mods, high compression pistons, and run high timing, like 22-23 degs to redline with something like 25-26 psi daily on e85 and i bet that will surpass your HP goals while still having quick enough spool to produce the torque you need.

Heh, probably enough torque to break a gear in your tranny after awhile

Having four stations local to you is definitly good enough. Trust me it will be worth the 106 octane or whatever it is. People are getting away with some serious daily tunes with this stuff that youd never dream of attempting with straight pump 93 octane.

Something you could do, is buy like a couple 2 or 3 gallon fuel tanks or something that you can fill up with e85 and store it in outback your house or something for extra gas in case the e85 pump is a little distance from you.

 

Keep your motor, take it easy for now. 400 is perfectly possible but not necessarily reasonable on a tight budget. Max out all your other mods, build up as much as you can, right before you slap on some 1000cc injectors get DSMlink and get used to tuning (if you don't already know how). Last thing you SHOULD do is a bigger turbo and built motor. Save up, pick up a 6 bolt block and if you really wanna go stroker build it when you have the cash. This is how it works in a perfect world, but we all have our own paths. just my .02

Good post.

 

t3/t4 50 trim/fmic/dsmlink/880cc injectors/walbro 255lpr fp.

 

Can definitely be done. +1 for the alky injection.

 

Great suggestions. I think I will keep the 2.0 6 bolt and not worry (too much) about the reliability. I guess I will try to get to 400whp, but even if I fall short I will still probably be able to pull off 350whp, which is fine for me.
Also E85 is not an option unfortunately but some alky or similar injection should be a reasonable possibility.

Thanks!

 

It could be done ,even without alky.Just give RRE a call and ask them about Scott Grey's car.It was 1994 Eclipse with a Built motor ,FP Green,264/272,660's,Stock manifolds/intake and exhaust/,and it made 414whp on 91 octane,21PSI.At least,that was the info from Sport Compact Car magazine,pardon me,if they exagerrated a bit or not.I think,that is the real deal.

 

It could be done ,even without alky.Just give RRE a call and ask them about Scott Grey's car.It was 1994 Eclipse with a Built motor ,FP Green,264/272,660's,Stock manifolds/intake and exhaust/,and it made 414whp on 91 octane,21PSI.At least,that was the info from Sport Compact Car magazine,pardon me,if they exagerrated a bit or not.I think,that is the real deal.

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