Just saw the link for a turbo kit for the maxima. i may be slow and this might have been discussed before, but what company is making the turbo kits for our cars? also, does anybody know when the kit will be available? i will definately purchase one of those suckers.

 

www.pfispeed.com hope u got 5k to blow, but ull go fast.

 

When did that come into play?

 

This kit is likely to be from pfispeed. It will be similar to the kits I am selling now:

http://forums.maxima.org/showthread....hreadid=103611

I am helping pfi to sell this kit. Looks like Greg wants to also. Email me for pricing info I can get it for less than $5K

I was the one who started this kit. All the kits will be derivatives of mine. I have had mine for 4 months. It runs great!

 

Look at the bright side. According to their dyno 4PSI from the turbo gives more HP than 10PSI from a stillen supercharger. I think I might have to reconsider my supercharging plans.

Stereodude

 

So will this, by any chance, work on a 5th gen?

 

For 2K and 2K1 there is a good possibility (with modifications). For the 2K2, we have not looked yet.

 

 

That is a big turbo you are running, and at only 4psi?
I've seen TO4E before and from what I understand they are not efficient below 20psi. How effective is your setup at 9psi ?
Also in the 4psi dyno plot you don't hit full boost until what looks like 4500 rpm? I've been in car with a 2.0L motor that achieved full spool by 4200.

ant

 

Can anyone confirm this? You only need half as much turbo boost than sc boost to get the same numbers?!?! That would suck!

Deac

 

http://www.pfispeed.com/images/Products_MaximaTurbokit/maxturbo-dyno01.gif

http://www.pfispeed.com/images/Produ...rbo-dyno02.gif

Those are their dyno curves. That's what they seem to be saying.

Stereodude

 

I believe its only because the TO4 pushes more CFM than the Vortech SC. But I dont know what I'm talking about most of the time

- M

 

No, that's not it. It's because a turbo doesn't have the parasitic losses of a supercharger. A supercharger uses the power from the motor to make more power. A turbo uses the exhaust (essentially free energy) to make more power.

The airflow from 4PSI from a turbo is the same as 4PSI from a supercharger at a given engine RPM. Essentially 4PSI is 4PSI. If the CFM of your turbo or super isn't high enough as your RPM's go up the boost level will drop and in the case of the turbo you will overspin it and kill the bearings.

Stereodude

 

yo quiero boost.

 

ahh yes.. parasitic loss.. never again will i post something without thinking .

- M

 

turbo97se..how many miles do you have on your car??

 

did i hear right....2k1 turbo...better start saving so when its out-- i'm ready to buy

 

hmm... I'm smelling 6PSI on a 2k2.

*sniff* *sniff* *sniff*

ahh... yes the smell of lots of HP, TQ and burnt rubber.

Stereodude

 

It's noy really half the boost. I believe it's 4psi turbo vs 6.5?? psi. Turbo I expect to be better efficiency cos it doesn't take power from the engine but uses exhaust gas.

I am not sure about the size of the s/c compared to turbo on the compressor side of things. If the rated CFM on the compressor on the turbo is rated higher than S/C, the efficiency of the turbo will be better. This is usually a more significant issue at higher psi. Other factors such as how much hotter a turbo runs also affects the efficiency

 

66K. I made a mistake, I told people 67K before. It really doesn't matter if you have good compression and maintain your car well. If the engine dies, replace the engine!

 

I may have missed this, in any case forgive the newbie q on this subject. Would one have to lower their compression first before installing the kit?

 

lowering the compression would give you a larger margin of error, however i doubt it's necessary.

I'm not exactly sure what the stock compression ratio on the maxima is, but i know of a few typeR's that are running drag3 turbo kits at 4-6psi on 100% stock internals/compression and they have no problems.. granted they have standalone EMS which makes tuning much better

 

I thought the Turbo only worked on 5-spds.

Is the Auto kit out now!?!?

Might be time to sell the SC....

Yes, the one I just bought 2 months ago.

IanS

 

I'll take it!!

 

my question is should i put the money to boost (gamble) on my long term daily driver, put that money on a project S13 that has greater overall potential and is better balanced, or put a down payment on a brand new 350Z or used supra? boost is tempting. i might get over it if my car runs 13s all motor. what would you guys do?

 

i'd take a full JDM silvia conversion 240sx or a 94+ supra hardtop TT ANY DAY over a maxima..

hell i'd even settle for the 350Z

but that's just me

 

do they have turbo kit for 3rd gen?? Thanx...

 

There are plans for 5th gen Maximas 2K and 2K1. There are no plans as far as I know for 3rd gens.

Nigel

 

Noone answered, so I'll ask again:

Is the Turbo available for Auto yet?

IanS

 

No, you're wrong. Matt was pretty much right.

 

oh man.. thanx for ansering that....

 

Hahahaha

Apparently you have know clue about Forced Induction. CFM is pretty much a completely useless measurement. It's all about PSI and losses on the engine. If you're putting 6PSI on a motor at 5000RPM with a turbo and 6PSI on a motor at 5000RPM with a SC both have the exact same CFM.

Because the turbo in those dyno curves was only set to 4PSI, it pushed less oxygen into the engine at any given RPM than the Stillen SC did (at 6.5SPI and 10PSI). Less oxygen = Less power from combustion. But yet still the turbo had more power.

CFM is moot. You can't push more air into the engine than the RPMs allow. The engine displaces 3.0L. At 5000 RPMs the engine takes in 3.0L of air 2500 times in a minute. It doesn't matter whether a supercharger or a Turbo is pushing the air. The engine at 5000 RPM is only going to use 264.86CFM. This is even the same of a NA engine. The only variance between NA, SC, and Turbo is how much oxygen is in each CFM of air the engine injests. That is a function of the boost level (PSI).

CFM can not explain why the Turbo had more power.

The only place CFM matters is if your turbo or SC can flow enough air for the car at the redline. So a 3.0L engine at 6600RPM needs about 350CFM. This means your turbo or SC has to be able to flow at least this much air through it while maintaining pressure. If you can't flow 350CFM your turbo will overspin, lose some PSI, and overheat cooking the bearings. On a SC you'll just lose PSI.

Stereodude

 

You are mostly right, but CFM is not completely moot. If a turbo's CFM rating is lower than your engine puts through you'll be operating the turbo outside of it's efficiency range. If the turbo compressor is too small, you'll be heating the charge rather than compressing it. If the exhaust turbine is too small, you'll choke the engine.

The beauty of the turbo is that you can pick whatever size you think suits your application and change it later if you don't like it.

To answer Ian's question, yes Auto is available. It will take a while to produce it after an order is placed because we have had no demand for it and keep none in stock. The initial 5sp turbo kits also took an f&$*ing long time because none were kept in stock. That's going to change.

 

so still nothing for Auto owners huh?

 

that's not what I said. It is available. Just takes a little longer cos we don't keep parts in stock

 

hehe aite.
I am thinking of getting the turbo by the time spring comes around...
hope it comes out by then ^^

 

Hi

This thread is about the custommaxima kit. If you want to know more information about the kit I am selling please email me.
I don't think it is appropriate that I post here any more.

Thanks

 

But he is using pictures of your car to promote his kit.

 

HEy what gives no turbo for the 3rd gens how could u guys leave us out?

 

you guys had turbo options before we did.. just improvise..