Supercharged/Turbocharged The increase in air/fuel pressure above atmospheric pressure in the intake system caused by the action of a supercharger or turbocharger attached to an engine.

twin turbo's

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Old Apr 11, 2004 | 11:59 AM
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twin turbo's

I have a friend of mine that has a N/A TT 300ZX. He is always bragging about being able to put two turbos on instead of just one. His car and my car is basically going to come down to whos got a better turbo setup. My question is has anyone ever done a TT Maxima and if so, are there any benifts over single. Room is also another worry I have about going TT instead of single. I want to keep my A/C and power steering. I know it usually comes down to what size the turbos are on whether or not they have to be removed, but is it possible and is there enough room to keep the A/C and PS with TT's. Thanks.
Old Apr 11, 2004 | 12:07 PM
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This thread without fail comes up all the time.

There is no need for Twin Turbos. Why do you think all the Supra guys are dropping their twins and going single? All the high horsepower setups are all single turbo setups.

Also putting twins on a maxima vq30 aint gonna happen. No space. Unless you put small baby turbos, but then you will top out like around 250whp.

Dixit
Old Apr 11, 2004 | 02:03 PM
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Someone told me that the rear bank would go lean. That is why I scraped that design.
Old Apr 11, 2004 | 08:33 PM
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Wait, your friend has a N/A TT 300zx? Am I the only one that sees something wrong with that statement?
Old Apr 11, 2004 | 09:01 PM
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maybe he means his friend converted from n/a to tt
Old Apr 11, 2004 | 09:03 PM
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why? 567890
Old Apr 12, 2004 | 08:19 AM
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He probably thought the engines were identical. Ha what a joker.
Old Apr 12, 2004 | 08:23 AM
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So friggen' what!? Gee, now I have to worry about 2x the oil leaks, 2x of boost leaks, 2x the turbo rebuilds, 2x the cost of upgrades. Yeah, I'm really jealous!
Old Apr 12, 2004 | 08:30 PM
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i think having a twin turbo setup would be really cool if its possible to do it. I'm not sure if that work would justify the means but it would be very unique.
Old Apr 12, 2004 | 11:12 PM
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Originally Posted by DA-MAX
maybe he means his friend converted from n/a to tt

I'm guessing that the car (when new) was not a turbo, but has since been modded...

just giving him the benefit of the doubt.

-vq
Old Apr 20, 2004 | 02:47 PM
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I heard that the only edge on the twin turbos is that they can spool faster...but with the turbos out now that already have minimal lag...what's the point. That and the very limited amount of space in the engine bay.
Old Apr 20, 2004 | 07:24 PM
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Um, actually, most of the highest HP turbo setups (on Japanese cars anyways) are in fact twin turbo setups. There are a handfull of insanely large single turbos for producing well over 1000-1500+hp but they are ridiculously large. Take a look at the fastest drag cars in Japan. Most of them are GTR's running twin HKS gt3240, gt3540, etc. Almost all of the fastest drag cars in Japan are running twin setups.

Well, I typed a long response/rant but, instead let me make it short. The Maxima will never be a sports car, so don't try to make it one. If a sports car is what you really want, go buy one. A TT maxima could be done, since pretty much anything is possible with enough money. However, a single setup would be much better financially. If you want huge amounts of power, and were considering a TT setup because of that, a FWD Maxima is the wrong platform for you.
Old Apr 20, 2004 | 07:41 PM
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^ My only question is how? The problem isn't money but the lack of room in the engine bay.
Old Apr 20, 2004 | 10:26 PM
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Originally Posted by Big D
^ My only question is how? The problem isn't money but the lack of room in the engine bay.
So you have and are willing to spend $10-15k? If you pay a shop to do it, considering it's never been done, they are going to charge a TON of money. You can relocate the battery to the trunk to save some space. Removing the A/C and all of it's components is one of the few other ways to really gain a lot of space in the engine bay (electric fans is a given). There isn't a whole lot more you can remove. You could fit 2 turbos in there, however it would have to be small, like 2 t25's. Factor in all the other stuff for drivetrain/suspension/brake reinforcement to properly handle 300+ hp and you are definitely going to be over the $10k mark. Of course, someone with lots of skills, tools and knowledge could probably pull of a ghetto "junkyard" twin turbo Maxima for just a few grand and not running much boost. Though, that's too much time and effort for most people, plus most people don't have access to the proper tools to get the job done.
Old Apr 21, 2004 | 05:16 AM
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Ive heard of some poeple using two different types of turbos in in twin setups, a smaller and a bigger, the smaller to spool quicker and the bigger to provide the higher level of boost, does this sound right? b/c im not sure if i'm right
Old Apr 21, 2004 | 05:49 AM
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Ya there is a dodge diesal that a smaller turbo spooling a larger turbo and that larger turbo spooling an even larger turbo.


I really don't know why you would want to do this but more power to you. You can get t28's that are good up to 450 hp each.
Old Apr 21, 2004 | 06:29 AM
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You'd need more space than what is currently available (FWD drivetrain severely limits our twin options)...even if you were able to remove all the accessories/battery and such. Plus, why do it? The engine itself makes great TQ down low, and having twins that spool up very quickly will make traction impossible (it's difficult enough as it is now).
Old May 1, 2004 | 05:37 AM
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Originally Posted by spanishrice
Someone told me that the rear bank would go lean. That is why I scraped that design.
Ask this someone to elaborate more on the rear bank running lean. You lost me there.

MIKE
Old May 1, 2004 | 06:25 AM
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Originally Posted by NISMOJDMMAX
I have a friend of mine that has a N/A TT 300ZX.

Am I the only one who caught this?
Old May 1, 2004 | 06:54 AM
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No you were not


Originally Posted by DA-MAX
maybe he means his friend converted from n/a to tt
Old May 1, 2004 | 08:15 AM
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whoops.........
Old May 1, 2004 | 11:13 AM
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Originally Posted by CandiMan
Ask this someone to elaborate more on the rear bank running lean. You lost me there.

MIKE
yes the person that claimed this is definitly auto iliterate because that statment is false and makes no sense anyway
Old May 1, 2004 | 02:58 PM
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Maybe because the rear banks are the last to get fuel?
Old May 2, 2004 | 08:06 PM
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I am sorry guys I haven't been on the forum in a while but to answer all of the questions about the N/A TT statement, yes he had a N/A 300ZX and has since then converted to TT's. Sorry for the confusion. I am still very interested in putting a twin setup on my car. I just don't think that I am going to get the kind of numbers that I want from a single unit. And as for the Supras that are converting to single turbos for high hp numbers, most all Supra's that do this are setting up there cars for highway driving which is top end speed. There are alot of 1200+hp Supras around where I live that cant hit even an 11 in the quarter because they can't hook up. They can go 200+mph but thats because thats how their cars are setup. In pro drags all of the Supras and most other setups are twin (not including the 4 cylinders of course). I am just trying to find a way to put two decent sized turbos in the VQ so that I can get the numbers I want. I am just trying to find a way to utilize those other two cylinders we have, because otherwise we might as well just get a 4-cylinder Honda if we can't produce like other six cylinder models. That is what seperates us from most other cars is the stout VQ under our hoods, and that is why Maxima's are even considered a playing factor in the import scene. Although we are under rated and overlooked, we still are recognized. Its not like our engine is weak or pathetic. The VQ is one of the best V6's ever made and I dont think anyone has yet even dared to get close to its full potential. I am just trying to get some recognition for what our engines can do and make some numbers that I think are possible.
Old May 2, 2004 | 08:41 PM
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Originally Posted by NISMOJDMMAX
I just don't think that I am going to get the kind of numbers that I want from a single unit.
what numbers are you aiming for? and explain how you are estimating that the twin setup will make more than the single on the Maxima? just curious
Old May 3, 2004 | 11:51 AM
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Since being there are 10 second Hondas everywhere you turn where I live. I am looking to beat the fastest. I know its saying alot but I think it can be done. 9's
Old May 3, 2004 | 11:59 AM
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Not on the street there probably isn't.

Originally Posted by NISMOJDMMAX
Since being there are 10 second Hondas everywhere you turn where I live. I am looking to beat the fastest. I know its saying alot but I think it can be done. 9's
Old May 3, 2004 | 12:12 PM
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well if you let the professor tweak your ignition maps I'm sure you'll run 9's.... IMO TT still seems like a waste of time and money...you already are going to have to use two small turbos to even make this work due to fitment constraints...soooooooooo, whats the point?? those two small turbos will probably cough out before a larger better breathing single setup would. I'd do a lot more research on turbo theory before you commit to this project.

none the less good luck...now less , more work! lets see it happen.
Old May 3, 2004 | 12:37 PM
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Wow. Nismojdmmax, I don't know what to say. I usually try to be nice to everyone, even newbies, but you take the cake. Damn, maybe you should try really hard to learn a lot more before you go around posting stuff like this. Obviously you do not have much knowledge of turbochargers, or even automobiles. So let me guess, twins are a little too weak so you want at least a T88 or T51r?! Have you even considered the rest of the car, other than the engine? What would you do to the drivetrain to support a huge amount of power. You'd need to do chassis reinforcement, serious drivetrain work (custom axles, etc), etc. The fact is FWD sucks b@lls when it comes to drag racing. If that's what you want to do, buy a 240sx. You'll never get enough traction and still have a bearable street car. So you want to destroy 10sec hondas? You want loads of power? Just give it up. Get over it and realize the Maxima will never be a sports car, and a sports car is what you really want now isn't it? Mod your Maxima and have fun with it, but don't try to make it into something it will NEVER be.

As far as mk4 Supras, no they do not do single setups solely for top speed. Many people do them because it is far cheaper than most of the twin setups available. The HKS gt2835 mk4 kit costs ~$10k, and you could do a single setup for less than $5k. On top of that, they make good numbers fairly easy, and it really cleans up the engine bay converting to a single.
Old May 3, 2004 | 04:44 PM
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Shadow1198,
Its his time, his money, and his car. Let him do whatever he wishes. Im sure that if he has enough money to make the TT fit/work, he has enough money to make everything else function correctly and efficiently.
Old May 3, 2004 | 08:09 PM
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Hal and Mardi have pushed the VQ to its breaking point many times (and past in some cases). The stock bottom end will hold a lot of power ~500whp. If you are seriously trying to run 9's sell the max and get something else. There would be way to much to do to get a max to 9's, its not impossible, but you better be willing to spend serious $$.

A quick list to get ya started:

VQ35 Block
ARP Head and Main Studs
Tomei 268x10.5mm Cams
Titanium Retainers
HD Valve Springs
Stroker Crank
Low Comp Pistons
Wrist Pins
Rings
Con Rods
High Capacity Oil Pan
Port/Polished Head w/ valve job
Larger Valves
Tubular manifolds that mate with single turbocharger
Liquid-Air Intercooler
Dry Sump Oil System
New Intake Manifold (Custom)
New Throttle Body (Custom)
All custom turbo piping
Custom downpipe with dump exhaust
Wet Direct Port Nitrous Kit
Aeromotive Fuel Pump
New Fuel Lines
New Injectors (Custom)
Standalone Engine Management
Launch Controller
New Axles
Complete Custom Tranny (Either Sequential or Auto)
Obviously a completely stripped interior and I mean completely
New Radiator
New Water Pump
The largest slicks you can possibly fit
Fiberglass/ Carbon Fiber body panels


As you can see, this would not be streetable and still would not run 9's.
Old May 3, 2004 | 10:44 PM
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In response to Shadow, I do know what I am talking about and you basically just contradicted yourself by saying front wheel drive sucks and making a statement about beating 10 second Hondas in the same sentence. Who is running 8.56's, Kenny Tran, what is he doing it in- FWD Civic. I deal with and have friends that deal thru Kenny Tran and Jotech. Here is a question for you. What is the fastest pass by a 4-cylinder- answer- 6.99 at 200+mph in Pomona by John Lingenfelter in a 2.2L Ecotec engine in 2002. Anything is possible. And for you to sit there and say things like the Maxima isn't a sports car so don't try to turn it into one. I never said the Maxima was a sports car. But let me ask you a question. What is a Honda Civic. Um theres a no brainer. Its an economy car. Bet the V8 muscle brains of the past never thought that they would see a 4 cylinder economy car running 9's on the street. And if you still don't believe it well then let me be the first to let you know that they do exist. And guess what, last time I checked they were still, yep, yeah, I think so, hold on let me check, yeah they still are making Civics FWD. So just to let you know instead of flaming so much, maybe because you are bored or maybe you just wanted to test my wits and see if I knew anything about what I THOUGHT I knew what I was talking about. Why don't you quite being part the of the problem and start being part of the solution. You might as well go and get a Buick Regal or something if all your wanting to do is pimp your ride. Oh and by the way, about the Supras. What in the world makes you think that someone messing around with a Supra cares even the slightest bit about $. When you have 1000+hp on a car that has a price tag of $20,000, that indicates to me that they have already gone out of their way to make the thing top of the line. Trust me, I have conversated with 1000+hp Supra owners often. I know what they are running. And I know why. As for your lack of confidence and trust in something you obviously spent time, money, and work on (otherwise you wouldn't be on this forum discussing your car) you might as well get a different car because its people like you that don't help a bit to expand research and new ideas on our cars. To all of the people that are supportive of not only my idea but other ideas in general to make our cars go faster, I say to you thank you and keep modding.
Old May 3, 2004 | 10:58 PM
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I'm am not jumping on CBass in any way, but the first thing on your list that you have for me to upgrade is the stupidest thing I have ever heard. By going with a VQ35 block you are basically saying that you think I should trade my iron block for an aluminum block. No thats not going to work at all now is it. Like I said, I am not getting on CBass's case but some of the crap people come up with is just plain dumb.
Old May 4, 2004 | 01:42 AM
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Originally Posted by NISMOJDMMAX
In response to Shadow, You might as well go and get a Buick Regal or something if all your wanting to do is pimp your ride.





-vq
Old May 4, 2004 | 04:00 AM
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#1 the VQ30 is not an an iron block

#2 isn't that Ecotec Focus you speak of RWD?? I could have sworn the FWD one from Meguiars was not in the 6's

#3 you obviously are ignorant to drag racing if you are belittling a Buick Regal, come one now...
http://www.gnttype.org

all in all this thread is because no one is producing anything, all I see is production is what shuts people up, cause magazine talkers come and go...so until then...blah to this TT BS...good luck
Old May 4, 2004 | 08:10 AM
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Originally Posted by DA-MAX
#1 the VQ30 is not an an iron block

#2 isn't that Ecotec Focus you speak of RWD?? I could have sworn the FWD one from Meguiars was not in the 6's

#3 you obviously are ignorant to drag racing if you are belittling a Buick Regal, come one now...
http://www.gnttype.org

all in all this thread is because no one is producing anything, all I see is production is what shuts people up, cause magazine talkers come and go...so until then...blah to this TT BS...good luck
not arguing or anything but isnt the ecotec 2.2 a GM engine
Old May 4, 2004 | 08:15 AM
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Ah, I could run run xx time in a cheap RWD car for about 1/2 of what would cost in a FWD car.
Old May 4, 2004 | 11:09 AM
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Uhhhhh, yeah. Look, anything can be done with enough money. Yes I know there are FWD drag cars running sub 10's. However, didn't you know they aren't even remotely street legal (most of them anyways)? Most of these are tubeframe drag cars with a look-a-like body on them. That's pretty much 95% of the car completely custom, and not much left of a Civic or whatever it may have been. Actually, I know of a guy that has a 10sec Civic hatchback. It's his daily driver and is actually done very nice (discreet, no ricer stuff). Do whatever you want with your Maxima, I'm simply saying, 99% of the Maxima owners on here do not have the time, money, patience, etc to actually go through with something like this.

I could never be satisfied with a POS Buick! I'm all about handling and the whole driving experience. Don't get me wrong, I love Maximas and I love it when people come up with new stuff to do to them. However, after really getting a lot more experience with sports cars years ago, it's made me realize what the Maxima will never be. I would still like to turbocharge my Maxima and do lots of little custom things to it. However I have given up trying to do anything crazy and get lots of HP. That's what I have a sports car for. I'm already dropping about $20k on my Z, so I don't have the time or money to waste on dropping loads of dough into my Maxima (although I did just drop $3k into my Maxima; engine/brakes/suspension/clutch/new car basically!).
Old May 4, 2004 | 12:16 PM
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Originally Posted by subs1000w
not arguing or anything but isnt the ecotec 2.2 a GM engine
yeah, you're right its the Cavalier....bah, Cavalier, Focus...same amount of gayness
Old May 4, 2004 | 12:16 PM
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In response to Da Max I never said that the ecotec was FWD. All I am saying is that no one ever thought that a 4 cylinder car could run a 6. I'm just saying that anything is possible. And by the way its not a focus, focus' are Fords and Fords have ZeTec, GM has ecotec. And by the way subs you must be thinking of the Buick Grand National, not the Regal. My grandmother carts her friends to the bingo hall in a Regal. Although the Grand National looks very much like the Regal its not anywhere near the performance of the GN.



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