2.5s turbo kit question

[Shift_Altima]

I think I'll keep this thing mainly stock for a few yrs then see from there. It's got like 5k miles.. it would be a waste and a shame if I messed with it and ruined it or lessend its life. As of now.. I'll try to keep pretending like my injen is putting 50 whp.. and once I get those new wheels.. I'll be near the 300 mark.

[Mr. Music]

I'm in the same boat. After the warranty is over, then we'll see what can be done. A tune wouldn't hurt it or lessen its life, as long as it is rather mild. For now, I'll enjoy my 24.4mpg... And remember, the Injen license plate frame adds like 20whp

[Shift_Altima]

it kind of sucks taht the QR engine is so fragile

[jaxCoupe08]

I didn't read the whole topic but, if your parents giving you a hassle then just do mild bolt on things. I'm as well waiting about a year, just incase there recalls of some sort. I'm going boost the coupe. It's all about the tunning! Remember bigger HP numbers, more gas!

[Shift_Altima]

mild bolt on such as? I can do a turbo kit.. boost around 5psi like others said and get decent hp. but why not just go 3.5 for the money? It will feel the same as having a turbo

[jaxCoupe08]

Intake, headers, exhuast, engine management. Personally in my car's I roll 15psi or more, 7psi DD in my Hondas. One thing I learned is cars on low boost, yes on the dyno shows higher numbers but on the street a 3.5 will eat up that 2.5. Thats just my guess. I'm a honda guy as well and seen all motor cars eat up turbo'd cars but its the weight to power ratio too.

On another note, what kind set up are you looking at then? I usually run gt30r - gt40r ball bearing turbos. I'm waiting on a guy who is about to turbo charge his to see how much the CVT can handle. Then im fabricate my own kit on gt30r as a start.

[Shift_Altima]

15 psi is too much for the engine to handle though.. And to be honest I don't wnat the car to get too loud

[adidas2go]

More psi is not going to make your car any louder. You can hear the compressed air more and the BOV, but your car itself wont be any louder.

[Shift_Altima]

Loud bc of exhuast.. headers.. bolt ons. Not from extra psi.. Is it worth getting a SpecV turbo.. putting a catback and turbo back and boosting like 7 psi? I just don't wanna kill my engine and as we figured out in this thread.. the qr engine isn't the most turbo firendly around.

sry for takin up so much of everyones time. im just really interested in the forced induction idea but pretty cluless about it

[adidas2go]

Loud bc of exhuast.. headers.. bolt ons. Not from extra psi.. Is it worth getting a SpecV turbo.. putting a catback and turbo back and boosting like 7 psi? I just don't wanna kill my engine and as we figured out in this thread.. the qr engine isn't the most turbo firendly around.

sry for takin up so much of everyones time. im just really interested in the forced induction idea but pretty cluless about it

Header > Headers

Ok, your header is not going to be a factor of sound in a turbo system. The header is very tiny, in comparison to a normal header, because it connects right to the turbo housing. Your exhuast will be bigger around because you will need to updgrade to 2 3/4 or 3 inches so that your air flow doesn't have much restriction. The less restriciton, the better. It will all depend on your muffler as to how loud it will be. Bolt ons such as? There will be no intake in your system anymore since your turbo will be producing the air. The inlet side of your turbo housing will now house the only intake and it will be drowned by the spooling sound of the turbo. Don't worry about this project just yet bro. Seems like you have already psyced yourself out of it in the past. I would ask as many questions as possible before you start a project. The more YOU know the less you will spend for someone else to do it. My first turbo project i only had minimul information and went out and installed it myself. I got done with all the bolt on install and then couldn't get any boost. Needless to say i couldn't figure out the problem so i had to pay for it to be towed to a performance shop.

[Shift_Altima]

WEll I really like the idea of this forced induction. But i'm still not sure.. i mean the car's gonna be faster but by how much? How long w/ill my engine last for? Do I have to build a custom exhast? All these things I have no idea about. That's really a shame about ur first car adidias.. sounds like uve got it figured out. I've been reading up on how turbos work and slowly i'm figuring things out so i guess eventually itll make sense.. but what i dont get is if i put a turbo kit that should bring it safely up to aroud 270-300 hp which is what all these kids advertise for.. then i put new headers.. a new cat.. and a new downpipe.. will that increase is it even more hp safely?

[Mr. Music]

No no. Well, first of all, gaining 160 whp is going to make your car A LOT faster. You won't need a custom exhaust, just a cat-back, and a high-flow cat wouldn't hurt. The turbo kit should come with the custom exhaust parts you need, which are the header(s) and downpipe, and some come with high flow cats already. Although it is illegal, you can completely remove the cat for even more power (not much though). As the life of the engine, if you are running 270-300 hp on the stock internals, it won't last too long if you drive it hard. But if you aren't driving it hard, then what is the point of adding more power? If you upgrade the internals, your engine should last as long as it would when it was stock. You just have to remember that you get what you pay for. Buy a good quality stuff, or else you'll leave some pieces of the engine block scattered around.

[adidas2go]

Whoa.

First of all, you WILL absolutely need a custom exhaust. You are not going to be pushing 300 F/I hp on 2 1/4 inch piping. You will defiantly need to upgrade to 2 3/4 or 3 inch to maximize the air flow the turbo will thrive on.

Second. The cat must go. It will cause huge amounts of restrictions. High flow cats are built with n/a horsepower in mind. Turbos work directly with the flow of the air. To much back pressure and the turbo doesn't spool as fast or create as much boost. Companies that sell cats for turbo applications have a stock turbo car in mind... eclipse gst/gsx, pt cruiser turbo, etc... Its pointless to pay for a high flow catalytic converter when all it can possibly do is create minimal amounts of restriction. Just eliminate it and be done with the problem. Also a lot of kits do not come with a down pipe because a lot of cars have different options on them. Air conditioning, Automatic transmission, etc... are things that will effect the placement of dimensions of a down pipe. Since your car is a 4 cylinder it will only have 1 header and yes that should come with the kit. Remember with turbo applications there are lots and lots of risks involved. To build a turbo car that is reliable as stock will need a lot of tender loving care. Research is key my friend.

[cuzzbubba420]

[Shift_Altima]

I'm not changing my engine's internals bc thats a HUGE waste of money. HUUGEEEE WASTE. So on stock internals we agreed that 7 psi was the maximum that would be safely added. If driven like a normal car without pushing often.. u know having fun occasionally how long would this last on stock internals? No way im taking out my catalytic.. I won't pass inspection and I don't wanna dump toxic stuff into the air.. thats just stupid. Ya i figured a custom exhuast would be needed but I don't know how lol.. Where do u get a downpipe and is it absoltuly neccesary for the turbo to work? Lol I already love and care for my car no need to worry.. And as for research. along with u guys.. im doing alot on my own but I'm trying to clarify alot of things i'm iffy about. thanks again for the time i really appreciate it..

[adidas2go]

I'm not changing my engine's internals bc thats a HUGE waste of money. HUUGEEEE WASTE. So on stock internals we agreed that 7 psi was the maximum that would be safely added. If driven like a normal car without pushing often.. u know having fun occasionally how long would this last on stock internals? No way im taking out my catalytic.. I won't pass inspection and I don't wanna dump toxic stuff into the air.. thats just stupid. Ya i figured a custom exhuast would be needed but I don't know how lol.. Where do u get a downpipe and is it absoltuly neccesary for the turbo to work? Lol I already love and care for my car no need to worry.. And as for research. along with u guys.. im doing alot on my own but I'm trying to clarify alot of things i'm iffy about. thanks again for the time i really appreciate it..

If you don't want to dump pollutants in the air, don't buy a turbo system. With the added fuel and tunning involved with a turbo you will be running rich to avoid detention/knock. Which in turn will produce a lot more pollution. Also if you have to pass a smog inspection, you shouldn't get a turbo, because you won't.

A down pipe is the direct bolt on that connects the turbo housing to the exhaust. You cannot have a turbo system without a down pipe or turbo elbow, simple as that. You can get a custom down pipe built at most performance shops that do mandrel pipe bending.

[Shift_Altima]

Lol ok whatever about the environment lol. I talked to the guys at turbo-chargers.com where our other guy is getting his donw. The kit comes with a downpipe but ti's for an SER so fitment might be a challenge but it can prob be done. He said everything except for exhuast will be in that kit. So i've got no more quetsions about the actual kit but as for the exhuast.. what do i need to do and how will it work? I also talked to a guy at a nissan dealership who's on these forums. He told me the stock internals are upgraded adn the rods are stronger on the new qr and the SER engine is the same thing. The only reasons its pushing 200 is the compression rate is higher for the pistons and the ecu is t uned differenlty. He also said 7 psi is very safe.

[jaxCoupe08]

7psi is safe, all depending who tunes your car. In my other cars im on 3" pipping now 15psi with nitrous. I think its actually quiter than a all motor car but you can hear my o2 sensor going crazy. 2.5" pipping should be good for a start turbo set up. Now if you keep pushing it hard even your stock motor, of course something is going to break! Just understand your car..

[Shift_Altima]

Lol 15psi is excessive for this car.. it just won't be able to handle that much will it? And for the exhuast.. do I go to a muffler shop and have them build me a custom exhaust? For the record.. this car has to last to around 80-100k and then its going bye bye.

[adidas2go]

Lol ok whatever about the environment lol. I talked to the guys at turbo-chargers.com where our other guy is getting his donw. The kit comes with a downpipe but ti's for an SER so fitment might be a challenge but it can prob be done. He said everything except for exhuast will be in that kit. So i've got no more quetsions about the actual kit but as for the exhuast.. what do i need to do and how will it work? I also talked to a guy at a nissan dealership who's on these forums. He told me the stock internals are upgraded adn the rods are stronger on the new qr and the SER engine is the same thing. The only reasons its pushing 200 is the compression rate is higher for the pistons and the ecu is t uned differenlty. He also said 7 psi is very safe.

The downpipe will bolt to a flex pipe that bolts to your exhuast piping. The flex pipe is what allows you to get the fitment just right because it "flexs" and moves slightly so you can bolt up both sides correctly.

The engine is the same as the SER however the engine bay is not. Fittment of the downpipe down and under the car could pose a problem and need modification.

[Mr. Music]

...First of all, you WILL absolutely need a custom exhaust. You are not going to be pushing 300 F/I hp on 2 1/4 inch piping. You will defiantly need to upgrade to 2 3/4 or 3 inch to maximize the air flow the turbo will thrive on...

True. I was thinking in terms of there being a big cat back available already. But of course, there isn't, and my bad there. For the record, I've never had a turbocharged car, so I'd listen to what adidas2go has to say. Anyway, maybe by the time you decide to add a turbo, there will be a larger diameter cat-back available. But for now, yes, go to a muffler shop to get a custom exhaust. If you want the car to last 100,000 miles, I would strongly suggest investing in stronger internals, no matter if the stock parts are stronger than they used to be. You will get your money's worth. And if you do, you can get more power. Anyway, 7-8 psi on stock internals should be safe as long as you don't push the engine hard every day.

[Shift_Altima]

I'm not sure where to get forged internals. The most i'm gonna do is forged pistons because that's the weak point in the qr engines. As for forced induction.. i'll wait a few thousand more miles i guess and see what's going on. I'm def gonna take the advice from some of u guys and i really appreciate it. I guess as for this thread.. there's not much else to be asked except where the hell do u get forged internals?

[TheBourneAltimatum]

I'm not sure where to get forged internals. The most i'm gonna do is forged pistons because that's the weak point in the qr engines. As for forced induction.. i'll wait a few thousand more miles i guess and see what's going on. I'm def gonna take the advice from some of u guys and i really appreciate it. I guess as for this thread.. there's not much else to be asked except where the hell do u get forged internals?

http://www.importperformancepa....htmlgo to the end of the pageits $949

[Shift_Altima]

So 949+4000 for hte kit. about 5k for parts. I know a guy who can install this for me for free so 5k to do this. Plus a few hundred for teh custom exhuast. so 5500 to get it up to 300. Not too bad in my opinion.

[Mr. Music]

Well, you would still need cams and valve springs, and a fuel management system too. JWT's valve springs go for $14 each, and their set of cams is almost $600, and a fuel system can run that up to more than $1000 (total for the three parts I listed.)

[kyle@stillen]

We have a 2.5 over at our fabrication facility right now that is getting a turbo kit.

I will be posting pictures very soon.

[TheBourneAltimatum]

^pics and list parts you used please

and when are you guys gonna make a QR pro for us? and does QR pro get rid of that ridiculous 112 mph limiter

[kyle@stillen]

^pics and list parts you used please

and when are you guys gonna make a QR pro for us? and does QR pro get rid of that ridiculous 112 mph limiter

It's a turbocharger with some pipes attached...Kind of cool haha. Sorry, I am in a joking mood this morning.

I don't know what the plan is for tuning for the 2.5. Usually we do forced induction first, then handling NA tuning after that.

[TheBourneAltimatum]

It's a turbocharger with some pipes attached...Kind of cool haha. Sorry, I am in a joking mood this morning.

lol

[kyle@stillen]

DON'T CALL AND ASK FOR THIS...It's not ready yet haha. These are just development pictures...