Will a z32 flywheel bolt up to VK series motor??

[julio]

Does anyone know if the VK series motor can accept the z32 flywheel bolt pattern like the VH series motor? I am looking to replace my VG30DE in my S13, and if I could find this motor somewhere I would love for it to be the replacement.

Also, if anyone knows anything about the general wiring of the motor, please leave some info or lead me to some wiring diagrams. If the wiring is anything like putting the VG into my S13 chassis, I dont think I will have any issues. I expect Nissan to make some changes after 10 years though.

Thanks for the help.

[elwesso]

why use a VK45? VH45s make just as much power and they are more reliable at high HP.

[julio]

why use a VK45? VH45s make just as much power and they are more reliable at high HP.

Couple of reasons (pro's):

1) I was under the impression that VK's make about 30-40 more hp than the VH.

2) The motors are a little bit lighter from what I have read (about 50 or so pounds).

3) This motor will pass my emission test easier than the VH will. Albeit the VH may well be able to pass better than my VG because it is a V8.

Obviously the power difference is what makes me want one. I had been looking into a VH for a while now, and almost bought a wrecked 93 Q45 the other day. After some reading online, all signs point out that the VK makes more power than the VH even with the conservative ratings. Is there any evidence to debunk this? I searched online quite a bit and could find none.

As for the unreliability, could you shed some light on that? I did not know the VK's were an unreliable motor in its upper range. I do know that I love that fact that it has VI. My maxima had a VI manifold and it made a huge difference on the dyno.

Of course there are quite a few opposing pro's for the VH as well:

1) The motor is cheaper and easier to acquire

2) The wiring will be similiar to my VG swap (assumption made upon the age of the motors; VG vs. VH)

3) Flywheel definitely bolts up to the crank, and the z32 transmission swap has already been proven possible.

[elwesso]

Basically the VK never put out 340HP, notice they didnt change hardly any designs on the motor and it is only rated at like 330HP... I woudl say, even if it did make 340HP, the VH makes 325-330HP with JUST a chip! So 10HP is not worth anything.

All the VK45s ive seen cannot withstand high power without serious help..... The VH can handle big power...

The VK is simply a very inferior design to the VH. Its like comparing a VG30DETT to a VQ35... Not even compareable as far as how the internals were designed.

[julio]

Basically the VK never put out 340HP, notice they didnt change hardly any designs on the motor and it is only rated at like 330HP... I woudl say, even if it did make 340HP, the VH makes 325-330HP with JUST a chip! So 10HP is not worth anything.

All the VK45s ive seen cannot withstand high power without serious help..... The VH can handle big power...

The VK is simply a very inferior design to the VH. Its like comparing a VG30DETT to a VQ35... Not even compareable as far as how the internals were designed.

Fair enough. I could make a few arguments as far as the power ratings are concerned, but I understand where you are coming from. Which chips are considered the best for the VH? I hope not JWT. I wouldn't mind buying a chip for $100 and socketing the ecu myself. Sorry for the Newbee Vh Q's, I'm the new guy to these motors.

**** I just read that you (or someone you know) writes chips. Thats great. I also read your comment on how the VH makes +100hp with -100lbs compared to the VG. My situation exactly. Do you have a site where I can find your pricing for the ECU mods, or is the right place to be doing that? The motor will be hooked up to a 5-speed, would you be able to solve the idle problems that auto --> 5-speed conversions typically have?

Modified by julio at 2:38 PM 2/2/2007
Modified by julio at 2:41 PM 2/2/2007

[T45]

There is a thread in the Q45 forum on the NICO ECU's.

[SSDwellah]

2 things here

1 - I thought some versions of the VK45DE were rated at 345HP (depends on the application, FX45 != Q45 != M45). Are you saying they overrated it?

2 - I thought the VH weighed almost the same as the VG, now the VQ on the other hand is about 130-150 lbs less than the VG30DE.

[elwesso]

the VH weighs somewhere around 450-500lbs.

[SSDwellah]

Right and that is closer to the weight of the VG30DE... the VQ30DE and VQ35DE is closer to 330lbs which is much lighter than the VG or even the VH. I really think a fully-equipped VH with all of the accessories weights +/- 20 lbs within the weight of the VG30DE.

[elwesso]

actually that 500 lbs was basically with the motor taken straight out of the car sans transmission..

[julio]

I was under the impression that the VG weighs in at almost 600lbs from what I have read online. I have never weighed it myself to confirm. Not quite sure how I would actually.

I am sure the TT is a bit heavier than the NA due to the cast iron manifolds + turbos. The stock steel manifolds on the NA don't weigh too much.

[elwesso]

I was told that the VH is only alitlte bit heavier than the KA24.....