Hey everyone, I was wondering if anyone knew whether or not a 6speed out of the new Altimas/Maximas with the VQ35 engine would fit the good old VQ30DE?

Reason I'm asking is I'm turbo-ing my Max and I want a little bit more umph and grrr while running through the gears... maybe a higher top speed and definitely better 1/4 mile times. Please help, thank you

 

yes. jeff from www.maximumtuning.net did it. give him a call, and maybe he'll give you the details. he's pretty busy, so he doesnt post much here (and i forgot his username).

 

Yes it will.

Link: http://maxima.cardomain.com/id/maximus75

Give this man a call. He has done the install on his car and he is boosted. He'll tell you exactly how it it feels and the complexity of the install. This should help plenty.

 

This is funny because as he posted I was typing if you look at the times of our posts. Looks like this thread is complete.

 

I think you have to swap all the internals from the -speed into the 5-speed housing.

 

if you put a aftermarket turbo can you acually call it a vq30det? just wondering.

 

No you can't. Also all the custom work that has to be done will cost major $$$. You have to ask yourself whether all that will be worth it.

 

Why is it custom work?

 

Sure. Whatever. Cause this isn't an 03 6 speed in a 4th gen. Right BigD?



It is possible.

 

Oh yeah. I forgot. I guess Tilley hasn't done the swap either?



Damn the org is full of Pessimists.

 

I was saying that putting a turbo on his car won't make it a VQ30DET not that the 6spd couldn't be done. I could care less actually about the 6spd.

 

Yeah it would be considerd a Vq30det, waht your gonna say when someone asks what motor u got?

 

Well since the motor is still just a VQ30 and doesn't have all the internals that the VQ30DET has, why WOULD it be called a VQ30DET?

 

Yeah I wouldn't call it VQ30DET neither (can't put those in the maxima), I would just call it a VQ30DE with a turbo.

 

Let him call it whatever he wants, he has a turbo and you don't!

 

lol spanishrice, I agree, you can call it whatever the hell you want, its a silly argument, If your saying that the T in VQ30DET stands for turbo then yeah his motor will be a VQ30DET If anyone actually knows what your talking about or cares, they'll ask what car you got it out of, then you explain that you added the turbo, then if they argue with you whether or not its a VQ30DET just hit them in the mouth and drive off reallly fast cause your turbo'd ... j/k

 

Ok since you suposedley know so much, what differnt internals does the vq30det have differnt then the vq30de, The reason it would be called a a vq30det is becasue it is T'ed

 

The internals of a VQ30DET are a bit different. Pistons and rods are forged in a true DET. They are designed that way because they come from the factory turboed. The compression is also a bit lower.

 

lets see where this thread goes.

 

When did I say I know so much? Just because you don't bother to read what others have said before doesn't make me a know it all. I just read things and learn. Unlike you I went back to a few years back and read some older stuff, not all of it but some of it. Well of course the T stands for turbo but just putting a turbo on a vq30 doesn't make it a vq30det. As far as I know the pistons are different(duh, to lower compression). Not sure about other things but I would guess maybe the rods are forged or something. I know TILLEY has/had vq30det parts put in his vq30 and I'm not sure what he used.

 

Not sure if this will help...

http://www.freshalloy.com/site/featu...nes/home.shtml


...I agree with Big D. The reason why an engine has the designator "T" if to signify that the Turbo is from the factory. Plus, if you were to order a VQ30DET and compared it to your engine with a aftermarket bolt-on turbo you wouldn't have the same engine. And I'm sure the engine mounts are different seeing how the VQ30DET is built for a RWD vehicle. There are other things as well, besides the internals...I don't have my files with me; they're on my work computer but, then I could list the many differences.

 

so I guess the answer is 'yes'

 

i would just like to say that i was in Jeff's car and watched and listen as he drove that beast. OMG, one of those cars that looks amazing, feels amazing, sounds amazing and left my eyes glazing. Half sedan half amazing :wow:

Actually how much would it cost to go 6 speed? those of us that had bad trannies and have to get it rebuilt, we bout to spend a good 600-1k, wouldnt hurt us as much to go for the conversion, plus we would be real unique . How many people have 6 speed in a 4th gen? Plus that shift **** pwns, i would have bought it but my car has 5 on it...

 

What about the 6 speed fromthe infinities if they have them?

 

The conversion would cost MUCH more than converting to a 5spd I would say. How much? Ask the guy who did it. Converting the TB to drive-by-wire should be fun.

Which Infinity exactly? The G35s? RWD. The I35s, same as the max.

 

Wrong!!!!

That is why you swap the internals of the 6-speed into the 5-speed so you can still use the stock throttlebody.

 

Are you serious? I thought they swapped the whole thing.

 

Well, is what RICE said true? About swapping the internals.

 

Why would you want the 6-speed anyway? The 5-speed in the VQ30 has gear ratios designed off of the powerband of the engine. I remember awhile back that one person who had the conversion done complained that the extra gear was essentially useless, because it did not take advantage of the 3.0's powerband, as it was designed with the 3.5 in mind. If you want the shift **** that pwnes, get an AE shift ****.

 

Since when do we care about the Throttle Body when talking about manual transmission swaps?

 

Last I checked, when you step on the gas the TB opens to let in air to the engine. Maybe your car is different, who knows. The 6spd has a drive by wire TB and no cables like the 4th gens.

 

It isn't possible to convert to "drive-by-wire" on a VQ30,and what in the hell does that have to do with this swap?
Drive by wire relys completely on the TPS and another sensor working together with the ECU.

 

the gears are shorter in the 6 speeds giving better acceleration? and the more power you have for example this guy wants to go turbo, then the faster your 1/4 time etc will be. it dont matter the engine is made for 5 spds cause it matters about how much HP u have. corrret me if im wrong someone?


-rafal

 

When I asked Jeff about how hard it was to convert to 6 speed, he said he would never want to do it again. So imagine how much he would charge.

 

i think when it comes down to it that putting a 6spd tranny on a 4th gen thats going to be turbo is pointless. all of you have great reasons for putting it in and not putting it in. but your all forgeting one thing "the turbo" a turbo doesnt even work untill about 3300rpm+ by the time you hit that in a 5spd youll be just as fast as you would in a 6spd. save that money to buy lsd or a new 5spd tranny.

 

OK.... I dont know If anyone is still responding to this thread or not but If anyone is then I would really be interested in some info...

A couple weeks ago my Maxima died. It acted as if the Clutch had gone out (no power to the weels) but it happened fast, really fast, like all of a sudden. The last time the clutch went out it was over the course of a few weeks. This has me and my dimwitted mechanic thinking that its the transmission. I have since bought an ACT stage 1 clutch and yesterday I had my car towed away to a mechanic that knows what he is doing.

As for now I am waiting a response from my new mechanic. Assuming that the transmision has failed what would I expect to pay for a new tranny and what would it cost to have a six speed with gears 1 - 5 roughly identical to the stock and have that 6th gear that I've always wanted for the freeway.



Ian Thorburn.

 

shifting more in the 1/4 mile isn't gonna make you faster

 

you want 6th for a low rpm overdrive on the freeway? whats wrong with the 3k that the 5 stays at? im sure that a new or rebuilt tranny would be cheaper then anything with a 6spd. save your money. most mods like that are for people that have lots of money and exsperience in this field. if only a few people have done it and they dont want to do it again, should be a red flag in the first place. but like most of the other post on this it is just my thoughts.

Mac

 

thast true, but with a s/c that would make a better combo. and i belive the lsd would make a better combo with turbo now that i think of it. just my opinion.


-rafal

 

looks like your question got lost in the sea of stupidity.......

When you say "no power to the wheels", are you refering to the clutch not engaging? That could be your linkage, but if the mechanic has checked everything Tranny-related, then he should have seen that. Also, try reinstalling the stock clutch, and see how it goes. I remember reading posts on how the ACT clutches suck unless you're boosted....and even then it could eat your tranny.

Back on topic:

The 6 speed should not do squat for the VQ30, with the exception of giving you a low RPM cruising gear.