That HP at that RPM is odd, for that kind of cam & head setup it peaks to early IMO. Have you removed the shelf and VIAS inside that 3.5 intake manifold?

For example I was able to hit 201 WHP at the redline with my DEK manifold swap and VQ30DE with stock internals, only thing that was stopping me from more WHP was the redline.

http://forums.maxima.org/showthread....16#post4077916

That was a true 201 WHP, later on that year I was able to get 196 WHP with bad head gaskets on that hot house dyno at Maxus '05.

 

Thanks I got the fax... will you be getting run files or should I post one of the fax?

In the mean time, could you post the complete mod list here for clarity's sake? This VQ30 is in a 350Z (w/ 6-spd)?

So far you've mentioned:
VQ30
Nismo heads with S-2 cams
3.5 IM w/ PF TB (is the mani modified ie no shelf/power valve or is it a 350Z mani?)
Motec
Headers (which ones?)

 

subscribed for runfiles...

 

Sorry I'm so late getting back, I was at a race in Spokane and just got back. If you can post the faxes, that would be great, go ahead. I am jammed up at work since taking a couple of days off and need to get with the dyno guy to get to the files. The VQ30 has the following:
VQ30 short block with ARP rod bolts
Nismo heads
Stock 3.5 intake and injectors
Pathfinder TB
Cold air inlet from 350Z
Motec ecu running MAP
Jerico four speed
Quartermaster 5.25" clutch
This is in a tube frame chassis with a weight of 2280# with a fiberglass shell of a 350Z

 

Sorry it took me a while but here are a couple of the dynojet printouts he faxed me:

 

Not too much under the curve there. Another case where peak #'s aren't all they're made out to be.

Strange that power falls of toward 7k or so. So, this is re: thread title

That'd be damn sweet on the highway though.

 

[QUOTE=NmexMAX]On Dynojets:

96sleeper @ 273
SR20DEN @ 265
ULISES @ 252
ALLBlackMAX @ 248

And there are a good handful in the low/mid 240's.

I am hurt that no one put me in that category
That's ok. I will be gaining more ground soon after the SSIM is finished this fall.

 

i'm getting there too, next mod custom phenolic spacers

 

6400rpm seems really low for 2988cc to throw down 260whp.


This requires some microscope study.

 

Both of you realize that when I posted those #'s, neither you 2 (knight) had dynod yet

Custom? Not Aarons?

 

I am aware of that NmexMAX, I was joking around.

 

I'm more interested in what exactly he had to do to get a VQ30 to work in a RWD configuration than those numbers.


But on another note, whudafxup with the torque curving back up after 6500 RPM?

 

Those are 2 hp curves. I had the same brain lapse.

2 hp curves, 2 torque curves, both sets on different sheets. No one sheet has hp/tq. Look at the readout, Max power...Max power.

 

If that's the case, then are the two curves comparing?


Either way, my question still stands. In the second graph the curve does the same thing after 6500, just not as much.

 

Nearly 3 months of difference?


It does look fishy though.

 

[QUOTE=

Custom? Not Aarons?[/QUOTE]

Why pay someone to do something you can do yourself? I get the phenolic for free from work. Mine won't be as pretty as Aaron's but they will still work just as well. And I have a lot more room between the upper manifold and the FSTB than most people so I will make mine thicker.

 

[QUOTE=nismology]I'm more interested in what exactly he had to do to get a VQ30 to work in a RWD configuration than those numbers.


I will try to get a couple of shots of my set up. It uses a pathfinder bellhousing that bolts to a plate at the firewall and the bellhousing is bored out to fit the snout of the jerico tranny. I also used a pathfinder oil pan because I needed the clearance at the front of the motor. I cannot describe what had to be done to fit this in the frame so I will try to get some pictures. This was a fabricator's dream or nightmare depending on your point of view.

 

256whp/ 250wtq. with 19's on
Hopefully i'll be push mid 260's + next time

 

Any runfiles to go with that? ^^

 

subscribing to see what he did to get so much out of that 3.0

 

I have some photos of the VQ 30 but it looks like you can not post attachments. How does everyone post their photos, Cardomain etc. ?

 

Host it from photobucket/imageshack etc, then do this with th picture location, but W/O the asterisk.

[IMG] *http://forums.maxima.org/images/site/bn_left.jpg* [/IMG]

 

email them to vqtech@gmail.com

I will reply with the link to your pictures.

 

Or that.

 

He's already posted the mod list.

 

f5 f5 f5...still no pictures!!!

 

If anyone's still wondering about the two different runs, that looks like one run with the VI open and the other with it closed... crossover is even in the right place (5k).

The curve upwards at the end of the primary graph (VIAS/power rod closed) is the runners getting a "second wind" as the intake pulses are approaching the second resonant frequency of the runners. IIRC the 3.5 IM exhibits similar yet more prominent behavior, where there are two crossovers and one stage of the IM is used both in the low-mid and uber-high end of the rev range, and the secondary stage is used to fill in the valley of the primary stage in the mid-high range.

 

If you're talking about the Niz-Dat graphs, you're way off. He clearly said he was using a 3.5 IM. And it appears he's using a 350Z IM which has no VIAS.


I

 

^^ Yup. And even if he was using the FWD 3.5 IM for god-knows-what reason, it doesn't utilize dynamic supercharging like the MEVI/00VI anyway.

 

I hope this works. There is a picture of the car, with motor in car,with custom oil pan, and a shot of the oil lines coming from the pan. The image link did not seem to show up.Try http://www.vq35de.com/Images/Niz-Dat/

 

 

 

The first run is a stock VQ 30 and the second run is the VQ 30 with the Nismo heads and JWT cams with the 3.5 IM.

 

What do you mean by "stock" VQ30? That first run is 208 hp and 215 ft-lbs, and there's no way you'll see that at the wheels on a stock Maxima. Now I know it's in a Z but still, there's no way.

Are you referring to the engine only - ie. do you mean stock internals, but with modified intake/exhaust/drivetrain/standalone ECU etc? What were the mods on the car for those "stock" dynos? Which IM for starters...?

 

i think we should take it a bit easy on him....we dont want to scare him away or anything with all these questions... even though i understand how curious we all are

 

What I mean by stock is a junkyard motor from my favorite wrecking yard and bolting on headers and using a Motec ecu running MAP instead of the mass air.
I was surprised also by the numbers and wanted to see what the heads would do for a 3.0. After this season I will put these heads on a 3.5 short block I have and then run the dyno and see what it will do. I believe that there is more power in the 3.0 but I was squeezed in for some dyno time and we could only make two runs for adjusting before he had to leave.

 

I wasn't being harsh (does it read that way?), just asking some questions and wanting some details/clarifications. Why would that scare him off?

 

Ok, so what engine... out of which year Maxima? A DEK? Which intake manifold? Which headers (which brand name) or custom? What tranny and drivetrain? Size and weight of wheel setup? The same tranny/tiny clutch you have now with the Nismo head setup?

In your opinion, what accounts for the high TQ #? I'm not attacking you I just want to know the details, as like I said, I know the engine might be stock internally but there are other mods in the picture to get those numbers, especially the TQ.

 

The VQ 30 that put out 208 hp is from a 95 maxima with stock intake and TB. The headers are custom by the guy that built the frame. It uses a Jerico 4 speed with a Speedway quick change rear end running 12" slicks on 15" wheels. The drive train is the same as always. I am sure the headers help the torque and I don't know if the long run from the TB to the intake on the VQ 30 with the heads helps the flow but I would say that the Motec and the ability to tune the fuel and timing is probably one of the biggest factors.

 

To put it lightly, I think most of us are still struggling with those numbers with those mods. Somehow your numbers are way above the norm, and something still isn't adding up to us.