3.5 in Altima v 350z difference?

Post by **Saint** » Sun Feb 27, 2005 6:15 am

My friend has a 3.5SE.I would like to know what is changed to make the 3.5 in the 350z 280HP?Is it just the ECU?Or is it cams, intake and exaust changes?He will eventualy get an Intake, headders and an exhaust.

Post by **Ty SE-R_92B13** » Mon Feb 28, 2005 11:39 am

I'd like to know too...

Post by **PalmerWMD** » Mon Feb 28, 2005 11:51 am

As far as I know internals are same.

The ECU is different, as is intake and exhaust manifolds.

There amy be more differences but those must be pretty complete.

Fred..

Post by **Saint** » Tue Mar 01, 2005 6:35 am

Could I just swap ECU's to get close to the 350's 280hp?

Post by **Fenvy** » Tue Mar 01, 2005 7:05 am

no... now I dont know if the injector is the same or not, the z33 ecu is programmed to do z33 intake, manifolds, exhaults. Changing the fuel map by replacing a ecu probably does next to nothing.

Post by **Saint** » Sun Mar 06, 2005 12:32 pm

I don't get it. How would an ECU know what kind of intake or exhaust it has?A 3.5 SE and a auto 350 is there another computer that tells it:"your in a 350z"For that mater. would it know what car it is in?I think its doable with stock 350z injectors and cams.

Post by **outcastcat** » Thu Apr 07, 2005 4:40 pm

It actually has no idea what car its in. But its designed and tuned to operate with those parts, so hes saying without them it wouldn't make much of a difference. Its probably slightly more aggressive, so you would see a performance boost, but the MAF would compensate it down cause your probably not inhaling as well. Put on a CAI and headers though and the new ECU probably would be better at handling the car then the other. Then again maybe not. It would be an interesting test.

BTW anyone have any recomendations on pre 90 (pre-KA24) stanzas or on GA16 sentras? any good? i found an SE-R then it sold so im wondering. I want a nissan.

Post by **00_Altima MD** » Fri Apr 08, 2005 10:05 am

get an altima. their cheap, but they're kind of hard to find a 5 spd, but the aftermarket is still growing for them. Whether you go with a first or second gen the motor will last forever. The weakest part of those cars is the motor mounts. my car has 204k miles and i have been running a 50 shot on it for about a year and it has responded beautifully with a 14.5 second 1/4. but i havent ever owned a sentra, however i have drive a 200sx with the 1.6 and it is slow as crap

Post by **Cold_Zero** » Fri Apr 15, 2005 8:54 pm

Saint wrote:My friend has a 3.5SE.It would like to know what is changed to make the 3.5 in the 350z 280HP?Is it just the ECU?Or is it cams, intake and exaust changes?He will eventualy get an Intake, headders and an exhaust.

The variance between the 3.5SE and the 350Z is only 30hp at the crank. The Altima SER is only 20hp difference. As I cant speak to the differences between the two engines, other than one is transversally mounted and the other is longitudinally mounted. The 20-30hp variances are probably made up in a freer flowing exhaust on the Z and probably a more aggressive cam setup, if I had to guess.

Quote » How would an ECU know what kind of intake or exhaust it has?[/quote]I wouldn’t really “know” what kind of exhaust or intake it has. The ECU would measure different readings and probably make adjustments to the changed airflow and exhaust flow.

Quote »A 3.5 SE and a auto 350 is there another computer that tells it:"your in a 350z"For that mater. would it know what car it is in? [/quote]There are probably big differences in the ECU between the Altima and the Z. They are two different kinds of cars and are probably incompatible with each other. I would be affraid to try mixing the two for fear of shorting the ECU out. That can typically be an expensive mistake.

Bud

Post by **PalmerWMD** » Fri May 20, 2005 3:57 am

Saint wrote:Could I just swap ECU's to get close to the 350's 280hp?

A simiiar effect can probaly be achieved by doing a bunch of intake/exhaust mods and then getting a reflash of ecu.

Post by **MinisterofDOOM** » Fri May 20, 2005 4:21 am

I was told by a former nissan engine importer (long story--not sure how viable his info is) that the differences between the longitudinal and transverse VQ are simply accessory mounting points. I see no reason for that...why would the accessory mounting points vary? Can anyone confirm or deny this?

Post by **PalmerWMD** » Fri May 20, 2005 4:22 am

I cant asnwer your question but he was referring to engine itself not the intake exhaust ect peripherals thats do vary between application

Post by **NISTECH** » Mon May 23, 2005 4:26 pm

There is a difference. The rear of the heads are alot different as far as coolant jackets go.

Post by **PalmerWMD** » Mon May 23, 2005 4:40 pm

NISTECH wrote:There is a difference. The rear of the heads are alot different as far as coolant jackets go.

Good catch!!!

Fred..

Post by **Cold_Zero** » Mon May 23, 2005 5:48 pm

Nistech doesnt miss much.bud

Post by **NISTECH** » Mon May 23, 2005 6:11 pm

Cold_Zero wrote:Nistech doesnt miss much.bud

How could I miss it, sticken my head under the hoods of these things all day burnin the @#$% out of my arms reaching around the damn pipes and hoses to fix some stupid sensor they coulda built right the first time while the customer just got off the @#$%%$$ freeway. AND WHAT?? You wanna WAIT for it. sheeshus, grumble, rant, throw tools, curse at people for no reason as I make my way to the car so I can burn myself yet again ..Geee THANKS

Post by **Saint** » Wed May 25, 2005 9:09 am

My mechanic got these arm guards to keep from burning.Look for them.

Post by **NISTECH** » Wed May 25, 2005 2:11 pm

yea I know about them. but most of the time the space is to tight for those things.

Post by **deathplaza** » Thu Jun 09, 2005 8:12 am

yah i would assume that it would be a similar to the difference between the ka24e in the stanza and the ka24e in the 240sx, or the ka24de in the altima and the ka24de in the 240sx, the distributor/ other things would have to be mounted in different places in order to fit, if nissan made it so you could put FR into FF there would be a whole lot of maxima's with vg30dett's besides that buying a 350z ecu would probably cost an arm and a leg compared to the price of just getting your og ecu tuned/chipped or piggyback.

Post by **NISTECH** » Thu Jun 09, 2005 2:39 pm

At this point in time It is likely cheaper to get one from wolf or one of those guys as the factory one will be quite pricey for the next couple of years.

Post by **Saint** » Sun Jun 26, 2005 10:56 am

I was just thinking that if I kept an eye out for a wrecked auto 350I could cop the ecu.I have already recomended the I/H/E as good basic modsI don't think he will go boost or any thing.So I have been thinking of good low budget mods for him.Thanks!

3.5 in Altima v 350z difference?

3.5 in Altima v 350z difference?

Re: (PalmerWMD)

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Re: 3.5 in Altima v 350z difference? (Saint)

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Re: (PalmerWMD)

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