[Onemanzu]

the picture that you just posted is an r32 which is an inline 6 ... come back when you got your shit straight and we can try this again.

[1slo5.0]

Originally Posted by AnglicoGT98 I have the feeling this might be controversial subject but oh well! The other day another Marine and I were reading one of his import magazines and they have this 1992 skyline (Nissan 240sx for domestic folk!) and the thing has a stock compression ratio of like 9.1:1. Put header back exhaust on and a fuel pump.injector upgrade and load the thing up with 24psi intercooled! It had like 420RWHP with an 11:1 compression ratio! Everything was stock except for what I mentioned. And it could run pump gas. And for those who may not know, this car is a 4 cylinder 2.0L. Now the purpose of this post wasn't to talk up an import...it was to give some background on my question. So...how in the hell is it this freaking import can hold all of this boost and run that much HP and still have stock internals?? And our V8's wouldn't be able to do that? I mean, in theory, if a 4cyl could hold over 400HP, why can't we hold atleast 500HP on a stock bottom end and internals? Someone please enlighten me!?!?

A stock bottom end 5 liter can make that much horsepower with less boost and no intercooler and still run on pump gas. If you threw 24lbs of boost at the same 5 liter it would make in the area of 700hp at the wheels. I don't see what your point is. Also you list two different compression ratios. Which is it, 9.1:1 or 11:1?

[ModMustang97GT]

I think that they idea was that it is 8.5:1 native but 11:1 with the boost. I don't believe that number though. Also, if you consider the cost involved with both cars to go 400+ its way less for the Mustang. I have friends with 240sx's with SR20det suped up wrx's and evo's and 350z. That 400-500 hp limit is the brick wall as far as we are concerned. hitting 400 on any production car is not a huge deal in most sports cars. But to go above that takes real cash. Only cars like the Skyline GTR and Cobra Terminator are equiped to pass that 400hp mark with stock internals. But if you look at the cost for us to upgrade our bottom ends, and them to upgrade theirs. With forged internals. Not really nice ones mind you, we can do 700-900 hp. They already have forged so for them to go over, they need a new engine or some really nice internals. $1000 per piston expensive.

[AnglicoGT98]

Yeah, those were the before and after compression ratios.

But it is official...I'm a dumbass! I was reading ItalianBullet's post and something finally clicked...I thought that the SR20DET was the engine in the Skyline, not the Sylvia. So you all were 100% correct about the Skyline and cylinders. Not that you needed me to tell you that, I just wanted to admit I was wrong. And I wasn't trying to be a dick Onemanzu, just that there are ways to get stuff across and to make the valid points you were making without pushing the thread into a negative demeanor. Too many times have I seen people misread shit and the info/tech thread is then turned into a bitching match. Anyways, it's done and over with.

On the flip side...Even though I was wrong about wich CAR the engine was in, I wasn't mistaken about the ENGINE itself. I went and got the article so here go some of th specs:

1995 Nissan 240sx Turbo SR20DET
Boost: max 20psi
Fuel: 93 octane
HP: 454.9 @ 7,600RPM
Tq: 340.9 lb-ft @ 4,200 RPM
Turbo: GT3076R
C/R: 9.1:1 N/A and 10.9:1 at max boost

One that I did notice when typing this up was the "max" placed on certain things and not on others. Like I said, I'll be the first to admit when I screw up, I did. But none the less, that's why I said at the beginning of the thread, "in theory" shouldn't we be able to have some kind of matching output. And sence I now have been properly schooled on the stock forged internals vs non-forged it does make sense. Why we may have some trouble.

[MSO]

yup forged internals are FTW

[Cricket]

Originally Posted by AnglicoGT98 I have the feeling this might be controversial subject but oh well! The other day another Marine and I were reading one of his import magazines and they have this 1992 skyline (Nissan 240sx for domestic folk!) and the thing has a stock compression ratio of like 9.1:1. Put header back exhaust on and a fuel pump.injector upgrade and load the thing up with 24psi intercooled! It had like 420RWHP with an 11:1 compression ratio! Everything was stock except for what I mentioned. And it could run pump gas. And for those who may not know, this car is a 4 cylinder 2.0L. Now the purpose of this post wasn't to talk up an import...it was to give some background on my question. So...how in the hell is it this freaking import can hold all of this boost and run that much HP and still have stock internals?? And our V8's wouldn't be able to do that? I mean, in theory, if a 4cyl could hold over 400HP, why can't we hold atleast 500HP on a stock bottom end and internals? Someone please enlighten me!?!?

First of all that is not the KA20. That is the sr20 so if it's an American 240 he has done at least an engine swap. The stock ka internals can't handle 24 lbs of boost. The sr20 can, but not for long. Even though they are stronger, they aren't exactly the strongest things out there. Also it's prob still on the stock turbo.


*edit* - I really should read all of the thread before I post.

[KingKelleyxSHREDx]

Originally Posted by Onemanzu the picture that you just posted is an r32 which is an inline 6 ... come back when you got your shit straight and we can try this again.

its a r33 just so you know. r32 ceased production in 1992.