Evo Viii Hp
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Joined: Aug 2001
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From: California
Originally posted by silverkorn
also JeffGST, the JDM EVO's are "rated" at 276 hp cause of a law in japan that no car is allowed to have more then 276 hp. last i heard, when dyno'd the car has 305hp, at the fly.
also JeffGST, the JDM EVO's are "rated" at 276 hp cause of a law in japan that no car is allowed to have more then 276 hp. last i heard, when dyno'd the car has 305hp, at the fly.
Second, the rumor about the car making more power then it is rated is just that a rumor. I have seen articles that say somthing like "the car dynoed at 310HP with almost no mods, so it must have started with more then 280HP." Well a statment like that is just a guess. Until somebody buys a car off the lot and engine dynos it I wont beleave the "it makes 20-30hp more then it's rated" rumor.
Maybe it might not be a "LAW", but there is a "Gentlemen's agreement " in Japan that all the major manufacturers agreed to that they would not produce cars with over 300hp ratings. That's why the last gen 300Z, Supra, and 3000GT were all rated at 280hp in JDM while their U.S. counter parts were rated at 300hp-320hp respectively. Surely you don't believe that the Nissan Skyline GTR only puts out 275hp stock do you?
Also the Euro spec Evo Vll that they tested in SCC dynoed at 247hp to the wheels. If you take drive-train loss in to consideration, that's about 24% for an AWD car, (247/76.8=321.614hp)
Also the Euro spec Evo Vll that they tested in SCC dynoed at 247hp to the wheels. If you take drive-train loss in to consideration, that's about 24% for an AWD car, (247/76.8=321.614hp)
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Originally posted by JeffGST
I don't know where you got the idea that 8.5:1 is a high compression engine for turbo charged vehicles. Maybe back in the early to mid 80s that was the way people thought. But now that we have precise control of timing and fuel ratios with ECU's anything below 9 is considered turbo friendly. The 1990 - 1994 turbo Eclipses had 7.5:1 and now that is considered so old school. No one will ever build a turbo engine with that low of a compression.
In 1995, Mitsubishi raised the 4G63 to 8.5:1, which is still current with today's ratio. Most DSM owners now build their engines with nothing less than 9:1 for turbo duty.
As for the race gas issue. Give me a break.
These engines are so detuned from the factory that it's sick. Power is so easy to make in the EVO. 92 Octane is more than enough to make 310HP to the wheels, not the flywheel. I guarantee that anyone who puts the Japanese spec EVO on an AWD dyno, will not register 270 HP. You will most likely see a figure like 215HP to the wheels. So you see, that if you want to make 310HP at the flywheel, its more like 250HP to the wheels. Raising the boost 4 psi should get you the 50 extra horsepower you desire. Race gas not needed. The fuel system can handle a few extra psi without jepordizing A/F ratios.
If you want 310 to the wheel, then race gas might be needed to keep the Exhaust gas tempetures down below 900C. 310 HP at the tires means that the engine is generating 375HP at the flywheel. Boost levels will need to be raised to around 22psi. Upgraded injectors and fuel pump will add some security in stabilizing the air fuel mixture.
But if you want a measly 275 HP to the flywheel, just go to Home Depot and buy yourself a ball and spring valve restrictor for around $10 so that you can adjust the boost signal going to the wastegate. Add 2 psi and there is you 30HP you were looking for.
Jeff
I don't know where you got the idea that 8.5:1 is a high compression engine for turbo charged vehicles. Maybe back in the early to mid 80s that was the way people thought. But now that we have precise control of timing and fuel ratios with ECU's anything below 9 is considered turbo friendly. The 1990 - 1994 turbo Eclipses had 7.5:1 and now that is considered so old school. No one will ever build a turbo engine with that low of a compression.
In 1995, Mitsubishi raised the 4G63 to 8.5:1, which is still current with today's ratio. Most DSM owners now build their engines with nothing less than 9:1 for turbo duty.
As for the race gas issue. Give me a break.
These engines are so detuned from the factory that it's sick. Power is so easy to make in the EVO. 92 Octane is more than enough to make 310HP to the wheels, not the flywheel. I guarantee that anyone who puts the Japanese spec EVO on an AWD dyno, will not register 270 HP. You will most likely see a figure like 215HP to the wheels. So you see, that if you want to make 310HP at the flywheel, its more like 250HP to the wheels. Raising the boost 4 psi should get you the 50 extra horsepower you desire. Race gas not needed. The fuel system can handle a few extra psi without jepordizing A/F ratios.If you want 310 to the wheel, then race gas might be needed to keep the Exhaust gas tempetures down below 900C. 310 HP at the tires means that the engine is generating 375HP at the flywheel. Boost levels will need to be raised to around 22psi. Upgraded injectors and fuel pump will add some security in stabilizing the air fuel mixture.
But if you want a measly 275 HP to the flywheel, just go to Home Depot and buy yourself a ball and spring valve restrictor for around $10 so that you can adjust the boost signal going to the wastegate. Add 2 psi and there is you 30HP you were looking for.
Jeff
Although 50bhp for 4PSI seems a lot?
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Joined: Aug 2001
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From: California
Originally posted by 3K
in Japan that all the major manufacturers agreed to that they would not produce cars with over 300hp ratings. That's why the last gen 300Z, Supra, and 3000GT were all rated at 280hp in JDM while their U.S. counter parts were rated at 300hp-320hp respectively. Surely you don't believe that the Nissan Skyline GTR only puts out 275hp stock do you?
in Japan that all the major manufacturers agreed to that they would not produce cars with over 300hp ratings. That's why the last gen 300Z, Supra, and 3000GT were all rated at 280hp in JDM while their U.S. counter parts were rated at 300hp-320hp respectively. Surely you don't believe that the Nissan Skyline GTR only puts out 275hp stock do you?
Anyway the point is all thoes cars only had 280hp in Japan. So you could say Japan got the detuned version of the Supra and 3000GT(GTO). Yes I do think the GT-R only has 275hp unless you can show me some clear evidence that disproves that.
Why is everyone arguing with a 16 year old girl that has a lot to learn about cars and driving? She is an obvious skeptic and we all know how you can't tell a teenager ANYTHING...they are always right, in their own mind anyway 
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From: Northern NJ
yea you got a point broeli
it just pisses me off when people come to message boards and preech they know everything about cars without doing any research. but i guess thats what you get when you deal with kiddies.
it just pisses me off when people come to message boards and preech they know everything about cars without doing any research. but i guess thats what you get when you deal with kiddies.
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Joined: Aug 2002
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From: Perth Western Australia
In an Australian motoring magazine recently, a Nissan R34 GTR N1 was chassis dynoed during a performance car comparison test. The AWD power figure at the wheels was 279bhp..........
And this was is a 100% standard factory car.
Also... if people look at the evolution of the GTR (R32, R33, R34) and I guess the Evo Lancers as well, the quoted torque figure increases quite significantly with each generation..... but the peak power does not change..... While this may be possible it is very unlikely. With the R34 GTR in particular the hp produced at the point of peak torque is just under 275hp as it is.... so from this point torque would have to fall very quickly as the revs rise to maintain this power level for another 3000rpm or so. When driving in one however, the "seat of the pasts feeling will tell you that this is not so.... and that if anything - there is MORE torque as the revs rise.....
Just my views anyway.
TH
Australia.
And this was is a 100% standard factory car.
Also... if people look at the evolution of the GTR (R32, R33, R34) and I guess the Evo Lancers as well, the quoted torque figure increases quite significantly with each generation..... but the peak power does not change..... While this may be possible it is very unlikely. With the R34 GTR in particular the hp produced at the point of peak torque is just under 275hp as it is.... so from this point torque would have to fall very quickly as the revs rise to maintain this power level for another 3000rpm or so. When driving in one however, the "seat of the pasts feeling will tell you that this is not so.... and that if anything - there is MORE torque as the revs rise.....
Just my views anyway.
TH
Australia.
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Joined: Jul 2002
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From: Las Vegas, Nevada
Originally posted by Claudius
Never has man spoken truer word regarding engine tuning on here since AndrewN last posted
Although 50bhp for 4PSI seems a lot?
Never has man spoken truer word regarding engine tuning on here since AndrewN last posted
Although 50bhp for 4PSI seems a lot?
On my turbo Eclipse, I was experimenting with boost pressure on a dyno. I started at 17psi and worked my way up 1 PSI per run. I noticed power increased 11-13 horsepower per every 1 PSI increase.
I worked my way up to 23 PSI on race gas and netted 341 HP to the wheels. So I figure an extra 4 PSI and 12 HP per increase should net around 50 extra horses.4 PSI * 12HP = 48HP increase.
Of course every engine is different.
Jeff
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From: Las Vegas, Nevada
Originally posted by broeli
Why is everyone arguing with a 16 year old girl that has a lot to learn about cars and driving? She is an obvious skeptic and we all know how you can't tell a teenager ANYTHING...they are always right, in their own mind anyway
Why is everyone arguing with a 16 year old girl that has a lot to learn about cars and driving? She is an obvious skeptic and we all know how you can't tell a teenager ANYTHING...they are always right, in their own mind anyway
Anyone who starts a post with "You are all wrong" will never get any of my respect. Who wants to listen to someone that already thinks she knows it all.
All my posts come directly from my own experience with my 4G63. I have no clue what experience if any she has
.Enough said. I end this here.
Jeff
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Originally posted by Mary-Kate Olsen
Yes I do think the GT-R only has 275hp unless you can show me some clear evidence that disproves that.
Yes I do think the GT-R only has 275hp unless you can show me some clear evidence that disproves that.
If you want proof of that, go visit www.gtr.co.uk. They dyno tested an R 34.
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Joined: Nov 2001
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From: Monaco
The r34 in japan should deliver around 280bhp when stock, but it should depend on the boost pressure, that is not exactely the same on all the cars, and maybe there is a small restrictor as on the evo wastegate hoses, that can be removed in 1 minute to raise the boost a little to get around 320bhp.
JEFF,
nice eclipse
Claudius what about your evo? Post some pictures.
JEFF,
nice eclipse
Claudius what about your evo? Post some pictures.
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Joined: Dec 2001
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From: St. Paul, MN
Originally posted by silverkorn
yea you got a point broeli
it just pisses me off when people come to message boards and preech they know everything about cars without doing any research. but i guess thats what you get when you deal with kiddies.
yea you got a point broeli
it just pisses me off when people come to message boards and preech they know everything about cars without doing any research. but i guess thats what you get when you deal with kiddies.
The only thing that I DON'T really like about Mary-Kate is that they do pop in at VERY in-frequent rates (it seems for no reason other than to be putting down others) and they act as though they know everything.
Mary-Kate....please at least try to act civilized. Don't constantly try to discount everyone's opinion as you HAVE been doing. Obviously there's nothing I or anyone else will/can do about it, but it's really just common courtesy. When I have a customer who I know is wrong, or I have a disagreement with about a ceratin feature of a phone....I wouldn't say something like "nope...sorry, you're wrong...get out of my store". I'd lose the sale....I'd say something like "alright...I'll have to take a look at that, but I disagree for right now".
So try to be a little less harsh....please.
Hooby
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Joined: Feb 2002
Posts: 689
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From: VA
Originally posted by silverkorn
yea you got a point broeli
it just pisses me off when people come to message boards and preech they know everything about cars without doing any research. but i guess thats what you get when you deal with kiddies.
yea you got a point broeli
it just pisses me off when people come to message boards and preech they know everything about cars without doing any research. but i guess thats what you get when you deal with kiddies.
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Joined: Aug 2001
Posts: 92
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From: California
Originally posted by Hooby
Mary-Kate....please at least try to act civilized. Don't constantly try to discount everyone's opinion as you HAVE been doing.
So try to be a little less harsh....please.
Mary-Kate....please at least try to act civilized. Don't constantly try to discount everyone's opinion as you HAVE been doing.
So try to be a little less harsh....please.
Also I think its kind of dumb how some people here say stuff like "Its okay mitsu took off 30HP, I'll just turn a screw and get 50HP for free". (not an exact quote, I am paraphrasing).
I think when this car comes out a lot of people here will be very disapointed. But maybe I'll have to eat my words. Only time will tell.
Last edited by Mary-Kate Olsen; Aug 19, 2002 at 08:11 AM.
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By the way Evo VII has 8.8:1 compression ratio, not 8.5
People in the US don't like the Evo 8? Why, because of its looks?
Oh good then don't buy it
I always believe these cars are for enthusiasts who like to squeeze out their amazing performance and not for the posers who only want to look good in it.
Word of caution to those who don't like its looks: don't ever test drive one. Because once you have, you'll have to force yourself to like the car since you'll buy it eventually.
People in the US don't like the Evo 8? Why, because of its looks?
Oh good then don't buy it
I always believe these cars are for enthusiasts who like to squeeze out their amazing performance and not for the posers who only want to look good in it.
Word of caution to those who don't like its looks: don't ever test drive one. Because once you have, you'll have to force yourself to like the car since you'll buy it eventually.