Intake upgrade questions

W

WietseFX35

Member
Location
Netherlands
Car
2009 FX50S AWD
Hi all,

I was looking around for a nice add-on for my '03 FX35.
This car wil be my daily driver so i am not looking for the real-deal big performance parts but just some easy bolt on's wich are worth the money.
Now i was reading enough about this plenum spacer, but also about the MREV 2 manifold.
Now my question is, does this MREV 2 manifold fit together with a 5/16 plenum spacer on my FX without having to modify stuff to make it fit?
If i also combine this with a Stillen Z-tube intake kit, how many hp and tq i will gain?
Maybe anyone driving with this set-up??

All info is welcome!!!:cool:
 
Simple listing:

- Get 5/16" spacer (or 1/2" spacer) instead of MREV2. Cheaper and will give you the same level of performance. MREV2 is mostly beneficial on the HR engine (06+ 350Z, 09+ FX35). 5/16" will give you more power & torque under the curve, meaning it'll give you better overall performance. 1/2" spacer will give you more maximum power at the high rev band. 5/16" would be a better choice for the heavy FX
- The power gains from the spacer will be min 10+ hp & torque. Depends on the car but it goes as high as 20 hp & 15 tq at the mid range
- Stillen intake kit with Z-tube will give you around 5-8 hp but most of it will be at the higher range. You'll feel fast though since the sound will be much better..
- If you get MREV2 + 5/16" spacer the additional power gain will only be around 4-6 hp. Not a good price for a $400 piece IMO.
 
You have the VQ35de non-rev up engine. The MREV 2 and 5/16" spacer will fit with no mods required. We have done this mod on both our rev-up and non-rev up de's and you may get 10hp to the crank.

BTW...06' still had the de.
 
nope,
all pre '09 35s have the VQ35DE

Nissan VQ engine - Wikipedia, the free encyclopedia@@AMEPARAM@@/wiki/File:Question_book-new.svg" class="image"><img alt="Question book-new.svg" src="http://upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png"@@AMEPARAM@@en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png

is used in many modern Nissan vehicles. Bore and stroke are 95.5 mm and 81.4 mm. It uses a similar block design to the VQ30DE, but adds Variable valve timing - Wikipedia, the free encyclopedia@@AMEPARAM@@/wiki/File:Mergefrom.svg" class="image"><img alt="Mergefrom.svg" src="http://upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Mergefrom.svg/50px-Mergefrom.svg.png"@@AMEPARAM@@commons/thumb/0/0f/Mergefrom.svg/50px-Mergefrom.svg.png. It produces 231 PS (228 hp/170 kW) to 302 PS (298 hp/222 kW) of power and 246 to 268 ft·lbf (334 to 363 N·m) of torque. The VQ35DE is built in Iwaki and Decherd, TN. It was on the Ward's 10 Best Engines - Wikipedia, the free encyclopedia@@AMEPARAM@@/wiki/File:Ambox_currentevent_yellow.svg" class="image"><img alt="Ambox currentevent yellow.svg" src="http://upload.wikimedia.org/wikipedia/commons/thumb/5/53/Ambox_currentevent_yellow.svg/50px-Ambox_currentevent_yellow.svg.png"@@AMEPARAM@@commons/thumb/5/53/Ambox_currentevent_yellow.svg/50px-Ambox_currentevent_yellow.svg.png list from 2002 through to 2007. It features forged steel connecting rods, a microfinished one-piece cast camshaft, and Nissan's nylon intake manifold technology. It has low-friction Molybdenum - Wikipedia, the free encyclopedia@@AMEPARAM@@/wiki/File:Cubic-body-centered.svg" class="image" title="Molybdenum has a body-centered cubic crystal structure"><img alt="Molybdenum has a body-centered cubic crystal structure" src="http://upload.wikimedia.org/wikipedia/commons/thumb/a/a3/Cubic-body-centered.svg/26px-Cubic-body-centered.svg.png"@@AMEPARAM@@commons/thumb/a/a3/Cubic-body-centered.svg/26px-Cubic-body-centered.svg.png-coated pistons and the intake is a high-flow tuned induction system.
A modified version of the VQ35DE, called the S1, is produced by Nismo - Wikipedia, the free encyclopedia@@AMEPARAM@@/wiki/File:Nissan_Nismo_old_logo.png" class="image"><img alt="Nissan Nismo old logo.png" src="http://upload.wikimedia.org/wikipedia/en/thumb/e/ea/Nissan_Nismo_old_logo.png/250px-Nissan_Nismo_old_logo.png"@@AMEPARAM@@en/thumb/e/ea/Nissan_Nismo_old_logo.png/250px-Nissan_Nismo_old_logo.png (Nissan's motorsports and performance division) for the Fairlady Z S-Tune GT. It produces 300 PS (296 hp/221 kW) at 7,200 rpm, a higher rev-limit than that of the original VQ35DE. The 350Z GT-S concept has a VQ35DE equipped with a switchable Novidem supercharger, producing around 382 PS (377 hp/281 kW) with the supercharger switched on. The engine may possibly be referred to as the VQ35DER if the GT-S goes into production.
It is fitted to the following vehicles: North American





The VQ35HR update was first seen in the US in 2005 G35 6MT models. By 2007, all G35 models had the updated engine. Nissan updated the VQ line with the addition of the 3.5 L VQ35HR (for "High Revolution" or "High Response"). It produces 315 PS (311 hp/232 kW) at 6,800 rpm and 36.5 kg·m (358 N·m/264 ft·lbf) at 4,800 rpm, using a compression ratio of 10.6:1. It has NDIS (Nissan Direct Ignition System) and CVTC with hydraulic actuation on the intake cam and electromagnetic on the exhaust cam. Redline is 7,500 rpm. The intake is a high-flow tuned induction system. This engine is known to experience oil consumption issues.[1]
The VQ35HR fitted to the following vehicles:

 
So the best thing is to go for a 5/16 spacer combined with a intake kit from Stillen.
But about this rev up and non rev up engines; as i understand the rev up engine is basicly a modifed engine to produce some more hp & tq.
As far as i know my VQ35DE is making 280 bhp and aprox. 375-380 Nm torque.
Is this correct because i am confused now:err:


Edit: Sorry for placing it in the wrong part of the forum....
 
Last edited:
gto-dave said:
You got it.
Dont understand why the confusion. The HR is a revised DE as stated above.
Click to expand...

I am more on about the hp and trq specs of the engine because in the text above there are various amounts of hp and trq mentioned and i am not sure what is now the correct amount? as i said, as far as i know it is 280 BHP and 375 Nm trq.
 
Maybe someone else can chime in. I still do not understand what you're confused about, sorry
Every application is diff, whether be it by tuning, etc.
 
The initial VQ35DE engine made 280 hp on the FX35 & G35 and 287 on the 350Z.
The VQ35DE REVUP engine in the Z made 297 hp and is a modified version of the DE
The VQ35HR engine is a new engine built on the DE basis but is almost totally different.

The other models (Murano etc) have the VQ35DE engine basis but the components and design are different so that's why it's a different power level than ours.

As far as the plenum spacers go, the Motordyne spacers will fit all DE, Non-Revup and Revup. The Stillen intake will fit both as well but both Stillen intake and the Motordyne spacer won't fit the HR engine. Aside from these, the HR engine has dual intakes while both versions of the DE has single.

This is the non-revup plenum:
attachment.php


and this is the revup:
attachment.php


They're basically the same size but there are differences in revup lower. The MREV2 on the other hand is a modified non-revup lower plenum. It won't be as effective WITH a 5/16 spacer. Alone, it's about the same gains as the spacer.

edit: And here's the infamous HR plenum, next to DE one..
Niss_Z33_Autozeitung_16.jpg
 

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This is what is says in the text, starting from 231 up to 302 ps, but doesn't say how much is exactly in the FX35.

It produces 231 PS (228 hp/170 kW) to 302 PS (298 hp/222 kW) of power and 246 to 268 ft·lbf (334 to 363 N·m) of torque

I was thinking maybe i have only 231 ps in my car insted of the 280 i was assuming now.
But now it is clear, other models of cars with the same engine produce more or less due to different engine components.

But so far the best thing to do is to get a 5/16 spacer with a Stillen Z-tube and Intake kit.
As far as i understand this MREV2 intake has the same effect as this spacer, only combined 4-5 hp more....for a lot of more money.
 
WietseFX35 said:
This is what is says in the text, starting from 231 up to 302 ps, but doesn't say how much is exactly in the FX35.

It produces 231 PS (228 hp/170 kW) to 302 PS (298 hp/222 kW) of power and 246 to 268 ft·lbf (334 to 363 N·m) of torque

I was thinking maybe i have only 231 ps in my car insted of the 280 i was assuming now.
But now it is clear, other models of cars with the same engine produce more or less due to different engine components.
Click to expand...

Your engine produces 280 hp at the crank, not 228.. You're confusing yourself.

EG3 said:
The initial VQ35DE engine made 280 hp on the FX35 & G35 and 287 on the 350Z.
The VQ35DE REVUP engine in the Z made 297 hp and is a modified version of the DE
The VQ35HR engine is a new engine built on the DE basis but is almost totally different.
Click to expand...
 
Idd, that part cleared it all up for me.
But as far is found on the net there are no company's in europe selling these parts for Infinity.
But maybe i can find some stuff for a 350Z, since these are sold in Europe, suppose there is no difference, only make sure it will be for same year of construction?

Edit: lucky me then, i have 2WD :)
 
Good for you in the summer :smile: Bad in the winter :frown:
Without breaking the bank, the best bolt on power mods for the 35, are plenum or spacer, a good tune/reflash of your ECU & a lighter wheelset.
 
To the rev up question. The rev ups were used in the manual tranny Z's and G's in 06'. Nissan went to the HR in 07' (good thing). The rev up's had a ring tolerance problem which caused an oil consumption problem for many Z and G owners who liked to shift close to red line. My son's 06' manual had this problem and hs had 3 engine swaps until Nissan hand built a new rev up with different ring specs. For those who finally were given new engines, they are referred to VQde-2's.
 
I will go for it i think, now i need to see to get this stuff shipped to holland sometime.
As far as i can see is that also the 350Z drivers in holland get their stuff from the states.

And i also read something about these HR engines using oil....so there it became a bit to much over-engineered.
But after i bought the car i found out how much fancy/modern technology was used in this engine.
Makes me even more carefull with it!!

Edit: and for GTO-dave: in holland we don't have snow...just rain :)
And even if there is a good snowfall in this country you don't want to go on the road because you will spent there all day in traffic jams!
 
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