how to turbo charge a 1990 z32 N/A??
 

can anyone give me pointers on how to safely convert my naturally asperated into a twin turbo. and also if anyone knows if the later model z32 have obdII and if its possible to convert my 90 obdI into an obdII?

Search and you shall find

but TT front clip, replace everything. You really don't want OBD2 on your z32.

96 has obdII, and as hoov said, you don't want it. Increased emissions equipment is NEVER conducive to making more power.

Regarding a TT conversion, you have three options:

1 Bolt the turbos on your NA motor, run some intake piping, and enjoy it until you try driving it and blow that engine to shit. (You wouldn't have to wait long.)

2 If your NA is pristine (which I doubt), buy an entire TT front clip and swap everything (it'll take you weeks, if not months if you're not technically inclined).

3 Accept that, if power is your desire, you made the wrong purchase. Sell it, buy a proper Twin Turbo, and enjoy it for many years.

well its in somewhat pristine condition its a 1990 with only 72k miles. im an entry level mech so i am capable of doing the labor myself. i heard that the N/A 300zx has better compression ratio so if you do a tt swap it will produce more power than an original tt 300zx. but i kinda have my doubts about that because i took on a friends stock 2000 honda prelude and couldn't even stay equal with him. although i am having problems with my fuel injectors so i aint calling it a fair fight.

lol if you can't beat a 2000 prelude you got some problems... I was able to hit a 14.9 on a fully stock Z32 N/A at the track, preeeeetty sure the stock prelude doesn't go that quick...

ya it just doesn't feel like its picking up like it should. the story is i bought it off this 20 something year old that didn't know anything about cars. he started trying to "mod" the interior and got too complicated for him to fix. i was able to buy it off of him for 1200 so im feeling like im still in a good buy. it looks like i have to buy new inner and outer tie rods for passenger, new fuel injectors, radiator that actually fits the car, new tires, machine the rotors, new brake pads, and redo the interior. am i still in a good buy? my goal is to bring it back to oem and then swap in a twin turbo.

lol A beginner mechanic will still take weeks to handle a swap.

And the higher compression on the NA motor is EXACTLY WHY YOU CAN'T PUT TURBOS ON IT. lol You have higher compression, and you'd be forcing compressed air into it. Temperature increases directly with pressure; because of the higher compression, the temperature becomes so hot that the fuel preignites, also known as detonation. It will blow your engine.

There's a reason the TT motor (and all FI gasoline motors) came with lower compression... so that it can handle boost. Did you think there was another reason? lol

i'll tell you right now, swapping all the injectors is over a grand right there... brakes are not a biggie, not sure what's up with the interior but interior pieces can be pricey. I think you are kind stuck man. I'd say fix it as cheap as possible and sell the car and buy a TT. This thing sounds like to big of a turd to even dream of sticking a TT engine in. And you CAN turbo N/A car motors, but most people don't do it right, and specifically speaking in terms of the Z32, they just don't seem to like it...


and randy, that doesn't directly translate, the S2000 is a 11.5:1 compression ratio revs to 9k rpm and will take 20lbs of boost and make over 500whp on a completely stock motor, 100% stock not even head studs or a head gasket change for a good 25-30k miles. But they are also builty beastly from the factory for some reason

wow that makes total since. i feel real dumb especially cause im in engine performance class still and we already talked about that on an eclipse. lol disregard last comment then :)

well its safe to say you can turbo charge a n/a engine because all turbo chargers are doing is making sure you get the full amount of air u can fit in that cylinder. from the factory a naturally asperated engine is built to only run on 80% biometric efficiency so when you turbo charge that engine it sends the other missing 20% plus more. so then now im confused because i would think that nissan would of manufactured the N/A z32 to still compete with ordinary cars, hince the higher compression ratio. so then its safe to say that putting a tt on your N/a z32 it would have more volume in each cylinder to hold more boost than the stock tt z32

^ You are completely ignoring the relationship of temperature and pressure, and this is why you need to do a shit-ton more reading before posting. If you think you can turbocharge your VG30DE, PLEASE try it. And make sure to come back here with pictures of the blown engine so I can laugh at you. Search TwinTurbo.NET - you'll find plenty of testimony of people who put turbos on an NA motor and blew it to pieces. In fact, there's only one guy who didn't blow his NA motor to pieces... and he limits himself to something like 6psi (which is less than the Twin Turbo comes with from the factory, and thus it makes less power, despite the higher compression ratio). I invite you to try to prove me wrong - it won't happen.

Many vehicles are over-engineered. LS engines can handle relatively substantial boost, too. I'd imagine any motor designed to rev to 9k rpms needs very tight tolerances (by the way, since HP = TQ*RPM/5252, the fact that it revs to 9k rpm explains much of why it can make so much horsepower). The VG30DE, on the other hand, was not so over-engineered... they had a VG30DETT to make gobs of power, they didn't see a need for the non-turbo version to do the same. (P.S. This is why I said "the NA motor" and not "an NA motor"... some can handle some boost, others cannot. The VG30DE is the latter.)

Not all mathematics translate directly like that... plus the fuel and ignition maps are different. Injector flow is different. Alot of other things. It isn't worth arguing man, trust us.


lol, and yeah, the TQ of any S2000 isn't very impressive. But hell, unless you are towing things HP is just as good, if not better lol.

Here's an example of what your pistons will look like after you detonate...

http://c4.ac-images.myspacecdn.com/i...517fb9366b.jpg

http://c3.ac-images.myspacecdn.com/i...fd2609da82.jpg

its cool. not tryin to argue too much. yall are the experts on z cars im new. so ill change my game plan. whats the possibility of me being able to work on fixing the body and interior of my z while also buying and refurbishing a vg30dett then swapping it in to my z? cause when i originally bought this car i just wanted a good daily driver that looked nice. with me only having 1500 in my pocket at the time i thought this was as good as i could get. all the good condition z32's were over my budget. if it wasnt for this car i would be on a honda civic forum lol

go to this link he is selling a 300zx n/a twin turbo swapped

http://dallas.craigslist.org/ndf/cto/2140145251.html

I'd get that, it has a Mushimoto radiator.

But then again, "Forgetting a few things..."

Like the fact it could have no compression on two cylinders, or the brakes or the master cylinder are leaking

Usually, anything over 9.5:1 is a bad choice for a turbo. There are the exceptions to that general rule, but the vg30de is not that exception. Also if you want to swap it, go for it! who cares if it's pristine or a rusty pile of dog shit. Hell I'm about to drop a vh45 into my sisters 90 TT just for the hell of it.

VH45 into a TT? whaaaa? do that into an NA chassis with a blown motor or a roller S30 man.

But I've already got a perfect TT sitting in my driveway! :082:

Ya well today my left front tire blew on my way to school. Now I'm thinking of taking my friends offer of trading my 300zx for his eclipse gst. But I really like my z car. :(

I hear ya! Engine swap is no problem but I'd sure hate to have to buy a nice set of tires and have them installed by a shop.

Dude are you crazy? You think the 300zx is a headache. Wait until you get an Eclipse. Mitsubishi's are major headaches. And have tons of problems. I know first hand. My wife owns one. lol

Just go get your tire fixed or replaced. It couldn't have done that much damage.

Ya I know they are trouble. My cousin has one and he is dealing with blown head gasket. Idk its just that everyone making z cars sound like too much trouble

For the average kid in high school, it is too much trouble. Why? Because it's a sports car that's older than you.

Well its not that much older than me. I'm 17 and in a trade school for automotive and working part time at a mom and pop shop as an apprentice. Yes its a little bit old tech for me but I like knowing how my trade came to b so I love working on cars that u can't plug in a cable and it tells u what to fix. It takes out all the fun of training to be a mechanic.

Old tech? Most domestics coming off the production line today don't have variable valve timing, dual overhead cams, and four wheel steering (well, your NA doesn't have that, either, but if you bought a TT...)... even independent rear suspensions. lol

The 300ZX is still advanced by today's standards, but my point is that sports cars are not generally reliable, and reliability also decreases with age. Thus, your 21 year old sports car is going to cost you a lot to keep running. If you don't retrofit pintle-less injectors, you'll face injector failure annually (to the tune of $150 each), thanks to our government. There could be hoses are probably in the process of drying out and you'll need to replace them when they leak. The FPR and damper could be going bad. The high pressure power steering line commonly leaks. The list goes on. Not to mention, the harder you drive a car, the more quickly things go bad. This is why nobody recommends sports cars to teenagers... they're expensive. It's not that the 300ZX is any less reliable than any other (it's probably more-so, as long as you don't put shit parts on it), but it's also FAR more expensive to repair (properly) when things do break.

me and my cousin just had a huge fight because i told him my car was worth more than his. he said never in my dreams will my car be worth more than his because his in in perfect condition and mine is in fair condition. so i went on kelly blue book and searched his car in excellent condition: 3390

mine in fair condition: 3500 or somethin like that.

main point is even mine being in fair condition it still is worth more or about the same as his. in excellent condition it says mine is worth 5600.

he is still fighting with me. i just counted it as a win for me :)

even though that is a pretty dumb fight... what is he driving?

He is driving a 95 eclipse gst. And he is being cocky about it because he upgraded the turbo and its faster. Now he saying his car is worth more than mine and I said it isn't because his car in excellent condition is worth less than my car in fair condition and he even lowered his value because he started upgrading parts making the car less reliable

It's the early second gen fwd eclipse, they were uglier, still could crank walk, and the only eclipses in demand are AWD. his car is and always will be worth 4grand... unless he turns it into a true race car. or something. This i know and promise... and 4k is if it truly is in excellent condition inside and out.

However with the issues you described with your car it sounds like it isn't worth more than 1.5k at the moment. Get it into truly excellent condition and you could get 5k for it.

1990 Z32 NA
base MSRP: $28,600
222bhp RWD

1995 GS-T
base MSRP: $19,999
210bhp FWD

While condition is key (and yours doesn't sound to be in great condition), the 300ZX is the more advanced, more valuable machine. He's driving an entry level sports coupe, you're driving a GT car. A nice GS-T can be worth more than a crappy Z32 NA, but in equal condition, the 300ZX will be worth more.

And it is a dumb argument.

thats what i told him. i am going to end up restoring it to complete oem. i don't have any specific plans with my z anymore except having a fun car to drive in the summer. im about to look into a subaru for my racing needs. but my z may become my daily driver.

The NA is a great summer cruising car. Just not worth modifying at all unless you want a nice sounding catback. But don't expect much except a nicer sound.

A subaru isn't the best for a racing car either. If you want a 4wd car that is inexpensive, has limitless aftermarket parts, and is proven to go fast as shit, get a DSM.

lol @ the irony, given the argument he had with his DSM-owning brother.

hahaha, yup, but his is a fwd early second gen turd. lol.

I know this thread is old but i cant believe i stumbled upon this dis-information garbage.

A vg30de CAN be turbo. or tt. It takes some work. If you understand dynamic and static compression you guys would know that with the higher 10.5:1 compression in the n/a would only require about 3-4# of boost to reach the same hp as a tt 8.5:1 compression on stock 9# of boost. Therefore less boost is required to reach the same goals. I've turbo'ed motors from all makes up to 12:1 compression on 93 pump and up to 14.5:1 on 110 low lead.

If you use a stock turbo setup on a n/a motor remember less boost to reach your goals. Also tuning will be a LOT more touchy at that point since there's not room to re-map like on a lower compression motor. It would require someone with very good tuning skills and a good program like nistune or zemulator. If detonation is an issue it can be corrected by #1- colder plugs. Colder then normally needed for boost levels. #2 retard the ignition timing. #3 if that isnt enough a water/meth injection kit can be had for around 300 and is fairly easy to install. Will require installation and tuning the injectors though. Water/meth kit will reduce cylinder temps drastically and reduce pre-ignition by a ton.

So to tell someone a n/a cant be turbo is bull****. It can be done, has been done reliably. Its actually better then a tt engine because you still retain the low end torque and hp from the higher compression. Take the turbos off a tt engine and it would be a complete dog and lifeless. And that's what you see until the turbo's spool.
Ive owned a successful na-tt z and i plan on doing the same to the current one i have now. And its actually cheaper then acquiring a used tt front clip. Running a fmic will eliminate the need for the tt core support and front fascia.
Check youtube. Theres a guy on there with a tt na z and he's pushing 620whp!

You're wrong about everything, on every post youve shared. It's a gross know-it-all.
 

everything you have shared has been false or lies. I went ahead and made an account for the first time ever, after reading all of your opinionated bs rhetoric. You don't understand compression differences and you clearly dont understand the difference in added performance. You seem to still be stuck in the early millennium. Because everything you shared is false. I'm currently NA engine, tt swapped, for 3 years on stock twins at 12 psi, making easy 400hp pulls on stock ecu with flashed eprom chip. I've pulled 655hp on 20 psi on the dyno as well with a set of 740 nismos. What you're claiming about higher compression heat and denotation, are problems we fought back in 2002 with lower quality fuels, and bad tunes, (running higher compression turbos, on Lower compression Turbo tunes, causes lean condition, lifts combustion temps) but a lot has changed with the Advent of ethanol fuels today. Force-feeding higher compression is actually how it's done. Anyone who says otherwise, is completely out of the loop. Anyone who argues otherwise, needs to go find a different hobby. So instead of talking to everybody like you have a slight case of autism. Why don't you just go, take your own advice, and do your own research? You might have everyone else fooled, but I can completely tell you're fully out of the loop here, and being disrespectful as well as difficult to people who are trying to learn.
like I said, I've never made a profile on an online form, but after reading your responses, I just had to let you know, as well as clear it up for everyone else here reading, that you are wrong, and what you have to share; is very outdated logic.)