5-spd auto into 4th gen??
5-spd auto into 4th gen??
Can it be done? With my 4spd on the way out it seems appropriate to put something better in there? I would probably take the tranny from a 6th gen and the tranny computer and I would most likely need an adapter plate no? Most important question is, will it fit? Also, do I need to get different axles?
And for the flamers, no I'm not going to swap a 3.5 in there because it will never pass CA **** emission laws. So if that is what you were going to say, no need
And for anyone else who is going to say to swap a 5-spd manny tranny in there, I don't need to hear that either.
And for the flamers, no I'm not going to swap a 3.5 in there because it will never pass CA **** emission laws. So if that is what you were going to say, no need
And for anyone else who is going to say to swap a 5-spd manny tranny in there, I don't need to hear that either.
Last edited by rxm6; May 6, 2008 at 10:40 AM.
Man, you're good on the last two paragraphs
Axles would be needed if you swapped out to a different transmission. Assuming that this would be the same case as a 6th gen swapping from a 5spd auto to a 6spd manual.
Axles would be needed if you swapped out to a different transmission. Assuming that this would be the same case as a 6th gen swapping from a 5spd auto to a 6spd manual.
http://forums.maxima.org/showthread.php?t=168625
http://forums.maxima.org/showthread.php?t=301536
http://forums.maxima.org/showthread.php?t=131717
Cliffs: It's been thought of, but never pursued. The main issues, IMO, would be software related. Considering all of the progress that Jime has been able to make recently re: software / electronically, it is very doable. tTe mechanical (hardware / fit issues) shouldn't be that extensive either.
http://forums.maxima.org/showthread.php?t=301536
http://forums.maxima.org/showthread.php?t=131717
Cliffs: It's been thought of, but never pursued. The main issues, IMO, would be software related. Considering all of the progress that Jime has been able to make recently re: software / electronically, it is very doable. tTe mechanical (hardware / fit issues) shouldn't be that extensive either.
Last edited by NmexMAX; May 6, 2008 at 11:09 AM.
Ok, I'm going to noob-down for a second. I understand mechanics fairly well, but when it comes to auto ecu's my understanding gets a little foggy. In my mind there is a TCU (tranny) and an ECU and the TCU is telling the tranny what to do. So then, what does the TCU have to communicate with the ECU that it can't? Is it different programming? Why couldn't a 5-spd TCU communicate with our ECUs??
BTW: Those articles were very illuminating but seemed to be more of a chin scratcher than anything else.
BTW: Those articles were very illuminating but seemed to be more of a chin scratcher than anything else.
Last edited by rxm6; May 6, 2008 at 04:06 PM.
5-speed TCM = A34 5AT ECU. Simple as that.
This is another option.
http://forums.maxima.org/showthread.php?t=547227
This is another option.
http://forums.maxima.org/showthread.php?t=547227
5-speed TCM = A34 5AT ECU. Simple as that.
This is another option.
http://forums.maxima.org/showthread.php?t=547227
This is another option.
http://forums.maxima.org/showthread.php?t=547227
EDIT:
I never said they couldn't. Maybe an A34 ECU would work. 
It was only as little background on the subject. That is as far as we've gotten.
It was only as little background on the subject. That is as far as we've gotten.
Ok, another dumb question then, if the TCM=a34 5at ecu, could the a34 ecu be reflashed/reprogrammed with the a32 ratios and numbers for the 3.0L??
Also, from the various OBD-II scanners, I have used, neither the A32 or the A33B display any information which would give you up.
If you cannot pass emissions with codes, then that will niot work.
Read up on Nissan's CAN system.
Last edited by eng92; May 7, 2008 at 08:02 AM.
Your inspections must be a lot more comprehensive than ours. Without the engine cover on there, most people would not know how to identify what it was.
Also, from the various OBD-II scanners, I have used, neither the A32 or the A33B display any information which would give you up.
Also, from the various OBD-II scanners, I have used, neither the A32 or the A33B display any information which would give you up.
If it's not exactly 2988cc then you're FAWKED
I think he just does not want to deal with hiding that it's a 3.5, etc
Yes, they actually put fluid down the intake tract, turn the crank 720*, catch the fluid out the exhaust and then measure the total displacement of your engine
If it's not exactly 2988cc then you're FAWKED
I think he just does not want to deal with hiding that it's a 3.5, etc
If it's not exactly 2988cc then you're FAWKED
I think he just does not want to deal with hiding that it's a 3.5, etc
What would make this worth going thru so much trouble? Why not just get a replacement 4AT and call it a day?
The OP has a small perspective. There are many other easier options.
*Sigh* This is the usual for every forum I post an idea in. 1 or 2 constructive responses and the rest are over opinionated and under educated responses.
1.) For those of your saying its legal in California to swap a 3.5 in than read these.
This is a quick run-down of federal regulations: http://www.epa.gov/compliance/resour.../engswitch.pdf
This is a quick run-down on California regulations: http://www.bar.ca.gov/80_BARResource...ns_Part_2.html
Notice the last item in "Can I change the engine in my vehicle?" about USEPA? The short answer for a 3.5 in an A32 is no, it has not.
2.) I clearly stated in my post that I didn't need to hear about 3.5's or manual transmissions, but a few of you apparently have some difficulty with reading comprehension and that's OK, it clearly can't be avoided. I myself am guilty of not thoroughly reading posts.
3.) What could have have been a technical discussion on the difficulty/implausibility/capability of performing this swap has turned into a thread akin to something you might find on a 240sx forum.
4.) i30t, locking-diff, VLSD, neither plentiful or cheap
1.) For those of your saying its legal in California to swap a 3.5 in than read these.
This is a quick run-down of federal regulations: http://www.epa.gov/compliance/resour.../engswitch.pdf
This is a quick run-down on California regulations: http://www.bar.ca.gov/80_BARResource...ns_Part_2.html
Notice the last item in "Can I change the engine in my vehicle?" about USEPA? The short answer for a 3.5 in an A32 is no, it has not.
2.) I clearly stated in my post that I didn't need to hear about 3.5's or manual transmissions, but a few of you apparently have some difficulty with reading comprehension and that's OK, it clearly can't be avoided. I myself am guilty of not thoroughly reading posts.
3.) What could have have been a technical discussion on the difficulty/implausibility/capability of performing this swap has turned into a thread akin to something you might find on a 240sx forum.
4.) i30t, locking-diff, VLSD, neither plentiful or cheap
IMHO, this upgrade is do-able, compared to the massive problems of installing a 5-spd auto. IMHO....
.
I wasn't meaning to get off topic or bash your idea...it just seemed to me that the whole "difficulty/implausibility/capability of performing this swap" wasn't looking good. That made me wonder..."if it's not gonna be easy at all, what's he wanting to do it for? There must be some sort of decent benefit..." Therefore, I asked. I know curiosity killed the cat, but I didn't think it would kill the thread...
We've already explained to you it's not really plausible or cheap (way more expensive than even a locking-diff. 4-speed) to put the 5-speed in. Don't go bashing us because your idea didn't turn out to be a realistic one. If you have such a problem with this forum then leave. No one is going to cry about losing you.
*Sigh* This is the usual for every forum I post an idea in. 1 or 2 constructive responses and the rest are over opinionated and under educated responses.
1.) For those of your saying its legal in California to swap a 3.5 in than read these.
This is a quick run-down of federal regulations: http://www.epa.gov/compliance/resour.../engswitch.pdf
This is a quick run-down on California regulations: http://www.bar.ca.gov/80_BARResource...ns_Part_2.html
Notice the last item in "Can I change the engine in my vehicle?" about USEPA? The short answer for a 3.5 in an A32 is no, it has not.
1.) For those of your saying its legal in California to swap a 3.5 in than read these.
This is a quick run-down of federal regulations: http://www.epa.gov/compliance/resour.../engswitch.pdf
This is a quick run-down on California regulations: http://www.bar.ca.gov/80_BARResource...ns_Part_2.html
Notice the last item in "Can I change the engine in my vehicle?" about USEPA? The short answer for a 3.5 in an A32 is no, it has not.
I read deeper into those rules, and they had an example of gas to diesel conversion and mentioned it would be OK to do IF you swapped ALL the parts from a like diesel version into the gas version.
I think they just don't want you to go backwards or half-butt with adapters and shortcuts. Anyway, CA is not my cup of tea, and I may be wrong but I have heard that a full update to a car (like a full 2004 drivetrain in a 1997 car) is allowed, they just prefer to avoid mentioning it as they would prefer you don't modify your car at all.
As for the 5AT: The TCM from the 5AT donor would be incompatible with the TCM in your A32/33. Most of the 5AT Nissan's have full CAN, and they need to communicate via CAN. In your sig, it appears you have an A32, which uses analog data for the TCM/ECU interface. So, no, it won't work with your A32 ECU, and as you know using an A34 ECU in a A32 chassis would definitely violately your CA emission rules. Besides, an A34 ECU likely would refuse to operate in a car without FULL CAN AND NATS system.
Another prob is that the 5AT likely has different mounting point for the trans mount, as the Altima and A34 are totally different from the A32/33. While the A32/33 are close brothers, I would not be surprised that the A34 drivetrain mounts are not compatible with the A32/33 chassis.
And then the driveaxles,
And then.....
Last edited by made in china; May 7, 2008 at 10:20 PM.
I think if you completely swapped the 3.5 drivetrain into your car wholly, i.e. no adapters, no hacks, just a total 5.5 Gen conversion, you'd be OK in CA. The only codes my car throws (full conversion) are 2 CAN codes related to not being able to talk to the ABS system, which the ECU uses for TCS.
I read deeper into those rules, and they had an example of gas to diesel conversion and mentioned it would be OK to do IF you swapped ALL the parts from a like diesel version into the gas version.
I think they just don't want you to go backwards or half-butt with adapters and shortcuts. Anyway, CA is not my cup of tea, and I may be wrong but I have heard that a full update to a car (like a full 2004 drivetrain in a 1997 car) is allowed, they just prefer to avoid mentioning it as they would prefer you don't modify your car at all.
As for the 5AT: The TCM from the 5AT donor would be incompatible with the TCM in your A32/33. Most of the 5AT Nissan's have full CAN, and they need to communicate via CAN. In your sig, it appears you have an A32, which uses analog data for the TCM/ECU interface. So, no, it won't work with your A32 ECU, and as you know using an A34 ECU in a A32 chassis would definitely violately your CA emission rules. Besides, an A34 ECU likely would refuse to operate in a car without FULL CAN AND NATS system.
Another prob is that the 5AT likely has different mounting point for the trans mount, as the Altima and A34 are totally different from the A32/33. While the A32/33 are close brothers, I would not be surprised that the A34 drivetrain mounts are not compatible with the A32/33 chassis.
And then the driveaxles,
And then.....
I read deeper into those rules, and they had an example of gas to diesel conversion and mentioned it would be OK to do IF you swapped ALL the parts from a like diesel version into the gas version.
I think they just don't want you to go backwards or half-butt with adapters and shortcuts. Anyway, CA is not my cup of tea, and I may be wrong but I have heard that a full update to a car (like a full 2004 drivetrain in a 1997 car) is allowed, they just prefer to avoid mentioning it as they would prefer you don't modify your car at all.
As for the 5AT: The TCM from the 5AT donor would be incompatible with the TCM in your A32/33. Most of the 5AT Nissan's have full CAN, and they need to communicate via CAN. In your sig, it appears you have an A32, which uses analog data for the TCM/ECU interface. So, no, it won't work with your A32 ECU, and as you know using an A34 ECU in a A32 chassis would definitely violately your CA emission rules. Besides, an A34 ECU likely would refuse to operate in a car without FULL CAN AND NATS system.
Another prob is that the 5AT likely has different mounting point for the trans mount, as the Altima and A34 are totally different from the A32/33. While the A32/33 are close brothers, I would not be surprised that the A34 drivetrain mounts are not compatible with the A32/33 chassis.
And then the driveaxles,
And then.....
And CA is not my cup of tea either, I've been reading the vehicle code extensively this evening and it contradicts and turns on itself at every turn making it really difficult to get a straight answer.
Sorry to stray off topic, but after the full 3.5 swap, for emission testing, they do the gas cap test and the OBD-II test for any CELs in IL as far as I'm concerned. Will my title be changed to like "hot rod" because of the new computer showing a new updated model and vin? Or would they not notice that?
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