I've gone through the all motor threads but I cant seem to find anything on this--
My question is: Is there any fitment issues or any other problems I may encounter by doing a complete swap(6speed tranny, VQ35, ecu and wiring harness)?? I'm under the assumption that's all I need... other than upgrading my fuel pump. Has anyone done this??

I'm looking to either doing the VQ35 on my 5spd or a complete engine and tranny swap.

 

I hear it is hard to swap the 6speed, but I also want to do it for the cruising gear.

 

I am intrested in doing this as well. It use to be said that a VQ35 in to a 4th gen could not be done and now look it seems like everyone is looking to that route. So seeing that there are at least a couple of members who have preformed this swap we know it can be done. But what modifications are needed is the question.

for the cuising gear!

 

As far as I know, The tranny mount is different, and you have to weld the 3.0 timing ring onto the 6spd? flywheel.

 

My main concern is how it mounts up, so i can see that might need some modification. But I wouldnt see why you would need to do any modifications to the engine or tranny if your pretty much just using the shell off of the 4th gen. Im no where near an expert but that's my guess. I can understand doing modifications for a swap like the 5spd VQ35... can someone shed some light on me why the welding is necessary!?

I have until the fall before I actually go through with either swap.

 

6speed and 5speed have different mounts, simple as that.

But the FWD VQ30/35 have same motor mounts so no mods.

You cant use 30 flywheel?

 

The 6-speed is WAY stronger than the 5-speed and has better gearing. If you plan on doing a lot of drag racing a 6-speed with a light flywheel would be best. Also, look for a '04 6-speed as they have a 4.13 final drive instead of 3.81 (02-03). Not to mention that the 5-speed has ****ty gearing for an N/A car (you have to just barely shift into 4th. It hurts your momentum and trap speed alot).

And if you're really hardcore, there's a 4.42 final drive availble for the 6-speed. It also makes launching a FWD car relatively easier since the 1st gear is 3.15 vs the 3.28 1st gear of the 5-speed.

And finally, there's the Helical LSD available, which is muuuuch better than the Vicious for 5-speeds.

But the downside is that the tranny swap is a real pain in the @ss.

 

Yeah, I want to find out more details on the swap. I need to have a talk with Tilley.

 

lol <--at myself...just want to make sure i'm understanding this... So all in all, if i'm putting in the VQ35, 6spd tranny, 3.5 wiring harness, and 3.5 ecu, the only modification i'll be needing to do is the tranny mount??

 

The wiring is a fawking nightmare. Not to mention the immobilizer, ECU and ignition switch all have to come from the same car. And then there's the E-gas. Tell you what, it's not worth it for 15 pounds of torque below 4000 rpm. My car was trapping 105 mph at 3050 lbs with me in it on a stock 3.0 ecu. You're just going to have more traction issues below 4k.

The 6-speed is a great idea, the retarded 2k2 ECU is not.

 

IIRC, the hard part is the lines and the shift rods. I dunno tho.

According to FAST, they are cable controlled. I wish I could find an 04+ Front end

 

I would look for an 02-03 speed then swap over the '04 final drive since you'll have to use the 5.5 gen shifter assembly which bolts on. The '04 shifter bolt hole locations look to be different according to FAST. It also looks like the 6th gen tranny housing is shaped diferently than the 5.5 gen. The starter is in toward the front of the car in an odd location. The 5.5 gen tranny is the best bet.

 

Good Info, I know that a few of us have seriously been looking into this swap I'll be sure to provide any info I also come across.

JP

 

I have some pictures of the 6-speed tranny mount setup if you wanna see them.

 

i don't know if the maxima people knew this or done this before but, An altima owner just installed in his 5 spd the lsd from the maxima. he also installed the final gear ratio 4.13 I think.
here is the link
http://www.nissanclub.com/forums/eng...opped-lsd.html

 

Interesting. But if you did that to a 4th gen max tranny you'd have to lengthen 1st gear to limit the torque output for launching's sake, but if you did that, you'd have to shorten 2nd since there'd be an even larger RPM dropoff, then if you did that you'd have to shorten 3rd to match, etc. And of course, you'd have to lengthen 5th gear to keep the highway RPM's down. With all that tranny modding, might have well have swapped in a 6-speed.

My $.02

 

you can play with wheel sizes too right? I don't know much about the maxima lsd, but if you are getting traction from BOTH wheels, you don't need to worry so much about the torque.
he also did flywheel clutch combo. That will help with the rpms, right? how bad is the rpms dropoff?

 

Im interested in seeing those pictures--

 

Email addy?

 

I'd like to correct myself. The A33B 6-speed starter is toward the front of the car. My bad...

 

for some people it is for others it isnt.

mounts are different. 6 speed mount is bolted on. 5 spd mount is on the tranny and the bracket is welded onto the frame.

shift cables go through the holes in the firewall without any problems.
all the hardlines bolt into the stock location. the only thing is you will need the bracket that the clutch pedal bolts to.

if you have the parts you could do it.
and there is a parting out of a 6th gen in the parts section if anybody is itnerested.

 

Could you expand on this a little more? Is this something that 4th gens that are already 5-speed would have to do?

 

I cant believe I gave up that engine to you

I got a new project in line. I dunno when this 6speed swap will happen

 

yes 4th gens that are 5 speed still have to do this. its a bracket that is welded to the firewall and the clutch pedal bolts onto the bracket. you will need the bracket. its kinda hard to explain so i will try to snap a pic of it. but there is no way around it.

i am not taking the vq35 so that is up for grabs.

 

I am talking to nismology

 

Why'd you give it up? What happened?


He has agreed to sell it to me for $740. He said he preferred to sell it to someone local either way. Either way, thanks alot for the heads-up.

 

Sweet.

Umm, I might be making way more power than you Not with the auto but after the 6speed swap

I gotta keep it on the low till I know for sure.

 

I don't understand why i would have do that. My plan is to use the 4th gen pedal and MC run a single SS line to the 6-speed slave cylinder. Why couldn't i just do that instead?

 

you could do that as well. i thought you were refering to using everything 5.5 gen.

 

Cool.

Are the A33B and A34 6-speeds the same externally?

 

Broadening the discussion a bit, doesn't the 6 speed also have significantly more parasitic power loss?

 

I would like to see pics of the mods required to get a 6-speed into a 4th gen. I don't mind doing the fabbing if I know what is required.

 

why is the helical so much better? whats the difference?

 

I think Helical relies on actual gears as oppossed to viscous couplings which relies on the viscosity of the fluid.

 

then is it possible to install a helical in where a viscous was? or is that a square peg in a round hole?

 

Square peg round hole.

 

Hahaha, yeah. Helicals are better because they react instantaneously whereas with a VLSD you've got to roast the inside tire a bit before it'll start to transfer the torque to the other wheel (among other reasons).

 

I mean, I think one would be better off installing a quife (which is helical) rather than try to install the Nissan helical lsd. My opinion is that is not worth the hassle and cost either way. I'll stick with my viscous.