?- powerd z32.

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
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fyneyoungstunna
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ive heard of an sr powerd z32. Ive heard that its fast and has even held its own with some TTz32's.

im thinking about an ka24de-t powered z32. I cant think of any reasons not to. I mean it should be sufficent enough to power the z, and with a turbo it should be more than enough. im only shooting for 3 or 4 hundred hp, but im going to need substantial torqe.

so your guys job is to convince or sway me with valid arguments!! none of that (x) engine is unreliable, or (x) engine is better.

Game on!!!!


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evildky
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displacementtorque

the z32 is a heavy bloated pig of a car, you'll want all the help you cna get moving it, more displacement = more power, it's also a lot easier to just tune a stock tt to 400 whp than to do a one off conversion and then run that engien at an extreme

to create a given amount f horsepower it takes a specific amount of air, so you'll haveto spin your ka a lot faster to move the same amount of air as the larger vg so the powerband becomes much more peaky and less torque

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tmeyer29
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if you want torque vg is your ticket

z32Odoom
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i want to say thats like taking a ferrari and putting the engine from a taurus in it. Then putting a turbo on the taurus engine. Doesn't sound like your going to gain anything from putting a ka in 300. Why not enjoy the fact that you got the better engine from the factory.

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fyneyoungstunna
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unfortunately i dont have a TT. i have an NA vg30de. im stuck at just about 270hp, with expensive mods on the na. tts are nice, but a pain to work on and more stuff to break.

from what ive been told by a guy that had an sr powered z, it had more than enough umph. so i just figured that since the ka-t is a close competitore to the sr, it would be basically the same result?

i_love_my_300zx
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If you want good power, consider a vh45 or LS engine swap.

Im my mind, going from a 6cyl to 4cyl is a bit of a downgrade.

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fyneyoungstunna
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cash to prep, build, and the swap are MY reasons for not doing those.i actually did consider the vh i just dont like hood bulges, the remind me of mullets.

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evildky
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fyneyoungstunna wrote:unfortunately i dont have a TT. i have an NA vg30de. im stuck at just about 270hp, with expensive mods on the na. tts are nice, but a pain to work on and more stuff to break.

from what ive been told by a guy that had an sr powered z, it had more than enough umph. so i just figured that since the ka-t is a close competitore to the sr, it would be basically the same result?
considder the source, there is a reason you don't see a lot of high hp heavy low displacemnt cars

it's just this simple, the engine is an air pump, and for an sr which is 2/3 the size of the vg, has to spin 50% faster and work 59% harder than the vg to make the same power

the cheapest easiest way to make a 400 hp z32 is to sell your n/a and buy a tt, second choice would be a turbo swap, third would be a radical engine swap, it's not that you can't do it with a smaller motor it's just a lot more work, and more money when you start accounting for all the custom fab work needed, and the engine will have to work harder meaning shorter engine life and more parts failures

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fyneyoungstunna
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i can see what you are saying about the enging working harder. But, its not all true. the sr and ka have the same hp rating and more tq than the stock vg out of the box. the tq curve of the two only has a 1k rpm difference. from what ive read on the japanese sites and seen from the guys here who have swapped for the sr, they are embarassing the tt guys. But i am still with you(for some reaon) of being worried about engine wear and tear!The tt swap is in no way cheap, at all, 6k is the starting point for that swap.ive sourced a usdm block and acc from a seller online, for 1k, then the rebuild kit 1k.

oh, not a lot of fab work either. The vg trans to sr/ka can be a bolt up affair.

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evildky
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you still don't understand, it's nto about stock hp ratings, it's about how hard it is for an engine to move a given amount of air

the S2000 has a 2 liter motor makign 240 hp, the trade off, the power is all up top, it has no torque and can barely spin the tires in first gear

the vg has 222 hp but has all the power and torque at a very usable portion of the rpm range, they have similar power outut but the little 2 liter has to work really hard to make the power as a result the powerband is very narrow and up high

and no the tt swap isn't cheap but neither is a custom ka swap, the cheapest way to get a 400 hp tt si to buy one, I'm selling mine for $7k, and it's good for 500 hp, there are lots of tt's available in the $5-8k range and amke 300 hp t of the box and with minor work can get to 400

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car nut
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fyneyoungstunna wrote:the sr and ka have the same hp rating and more tq than the stock vg out of the box..
No, they don't. KA24DE = 155hp/160tq, SR20DET = 205hp/203tq, VG30DE = 222hp, 198tq.
fyneyoungstunna wrote:from what ive read on the japanese sites and seen from the guys here who have swapped for the sr, they are embarassing the tt guys.
In what? In drifting possibly (but thats more driver related). Definitely not on a road course or strip.

I vote VH.

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i did my tt swap for aroudn 3300..... motor was 1400 sourcing out allt eh other parts was another 1400 and then miscelanious.. new cluth and stuff.... fab work jsut to put a ka in it? not worth it... if youre gunan do all that fab work might as well do the vh... or go for ls...

side note anyone ever researched putting the vq35hr in the z32?

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fyneyoungstunna
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@carnut yes it was road course.I ommitted(by accident) the T in ka-t. but yea they are all pretty close.

A stock s2k will smoke an na Z

the ka swap is not custom. there is no modding exept to use the vg trans if you want an thats only a bellhousing swap. oh, and wiring, but its only five wires to drive it!


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car nut
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There is no way a KA-T powered Z32 smoked a TT Z32. None. They would weigh almost the same, and the TT would have better response. At most it would've been close, but the KA-T would've been at its max and the TT would be just getting started.

A stock S2000 will also smoke a TT on roadcourse, so I don't see how comparing it to an NA is relevant. S2000's are very fast.
fyneyoungstunna wrote:the ka swap is not custom. there is no modding exept to use the vg trans if you want an thats only a bellhousing swap. oh, and wiring, but its only five wires to drive it!
Not custom? . It just bolts right in? . Only 5 wires and your good to go? .
Modified by car nut at 9:17 AM 2/6/2010

V030211
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You are saying that by swaping the bellhousing you can bolt the VG transmission to the K motor? Is the opposite true? Can i swap the VG housing unto a K transmission and run that? The gearing on the sohc Ka is really great and i'd like to keep that and also, it would save me from having to get a custom drive shaft if i can keep my Ka transmission backhalf.Also I'm trying to do the opposite swap from you (Dropping a VG30dett into a S13 hatchback - still not sure why you just dont opt to swap in a TT instead of a Ka, if you need a Ka i have 2 you can have for about $100) If you were going ahead with the Ka sway and used the full K harness and ecu would you have to bypass anything or splice any wiring from the Z32 to the K ecu? I ask cause i want to know once I have the VGtt engine, full harness, and ecu am i lookine at a plug and play situation also for my 240sx.Any of you guys ever heard of this swap (VGtt powered 240) and can point me in the right direction tell me where to look? Also, anyone have a complete VGtt setup they wanna sell; looking to buy this coming week.

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fyneyoungstunna
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haha, NO not a KA powerd z, an SR powerd z.and hell no a tt powered z weights the same as an sr z. what are you smoking?

the sr powerd z weighed in at 2800, the tt in stock form ways 35**yeah thats a BIG difference.

yes, five wires and your good to go, for the ka. ive done the swap on other cars. the ka wiring is VERY simple.

yes the ka will mount up to the vg mounts. i know this cause: a vg30e will mount up to an z32 with stock mounts-> the ka will mount to the vg30e s12's stock mounting points--->swap crossmembers if you want to be 100% shure.this isnt my first rodeo!

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evildky
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the s2k is faster than the n/a z because it's about 1000 lbs lighter! look it up! so you can put the more powerful s2k motor in a z32, save a couple hundred lbs loose all the torque move the powerband to a place where it's hard to use and the vg will be faster out of the hole and out of turns

an otherwise stock sr powered z isn't 700 lbs lighter than the tt, the sr weights abotu 200 lbs less, a 2800 lb z32 has more than a couple of cylinders missing

mounting the ka might not be difficult...at first, then you have to make all the acessories work, heater hoses, radiator hoses, and oh yeah you were then gonna have to add a turbo, all the piping and plumbing needed and then there's tuing and fuel injectors etc, it's a lot easier to just by a tt, if you really want to build a ka z32 have at, but I don't think you'll convince anyone it's a better option

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car nut
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fyneyoungstunna wrote:haha, NO not a KA powerd z, an SR powerd z.and hell no a tt powered z weights the same as an sr z. what are you smoking?

the sr powerd z weighed in at 2800, the tt in stock form ways 35**yeah thats a BIG difference.
Not the same but if the only difference between the two cars were the motors, a KA-T powered Z would weigh close (probably about 200 pounds less) then a TT. An SR would weigh a bit less, but you can't just swap motors and expect to lose 700 pounds. [Correct me if I'm wrong evildky] but doesn't the VG30DETT weigh like 500-600 pounds w/ all the hardware? An SR with all it's hardware still weighs a little over 400 pounds so you wouldn't really be saving that much. The TT would still make it up in power/weight ratio, so the only advantage the SR powere Z would have would be keeping more speed through turns, but like evildky said, the TT would more then make up for it on exit speeds and straights.

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fyneyoungstunna
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naw, the 700 wasnt just from the motor. Iirc he did some weight shaving as well.

if i can find an cheap tt, i might actually reconsider. but those things are still rather pricey to maintain.

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labcoatmonkey
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TT engine HarnessECUEven transmission Around $2000

Fab work: as much as FREE! (aka practically none)Time needed : about a week

KA+T : 1200 engine + pistons and rods (another 1200)+ turbo, manifold, injectors, (another LEAST 1000 for decent products).Thats if you want to make reliable 400hpFab work?

all in all comes to atleast 5K for what I would call risky business.

Might as well look into a vq30 or vq35 swap, those engines are soo light but then again alot of fabrin.

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fyneyoungstunna
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your ka prices are a bit skewed. but ill help you out.

ka24 motor(all inclusive): theres on listed by me for 350, there is another one kinda close for 400, and then some just lingering out good driving distance for 350-400. built internals are not "necceasary" till about 500hp, but....i will be doing forged internals.

anyways. all of this is going on hold. someone walked away with my full exhaust system, so thats the first order of business.

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car nut
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KA's can be had for next to nothing. I wouldn't pay more for $200 for a running one (and that's if it's in good shape). And I'd love to see anyones KA-T running 500hp on stock internals.


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