JClaw

iTrader: (17)

Anything we can do with a 3.0 other than bolt ons/headers/turbo/sc and whatnot instead of getting a 3.5 bottom end? Do they even make lighter pistons/internals?

From what I've heard we can't get more than 3.1 or 3.2 out of it.

What about the VQ33DE stroker? I've searched the org but can't find a certain thread I remember reading long ago. Any ideas would be appreciated.

THT

iTrader: (8)

Here's the stroker thread: http://forums.maxima.org/showthread....t=vq33+stroker

~THT

Tatanko

iTrader: (34)

Well, the VQ33 stroker was never actually proven to work. They just tried it out-of-car to see if stuff would fit. I'm assuming it would work though. But if you're gonna go through the trouble of doing the VQ33 stroker, you might as well just do a full 3.5. Both are the same cost pretty much, only with swapping the 3.5 you don't need to take internals apart and what not.

JClaw

iTrader: (17)

Yeah, but at least with the 3.3 we're sure the block will fit. I would love to simply change the 3.0 block to 3.5 with internals but it's never been made clear how much work is involved and I don't have access to 3.5 specific dimensions only 3.0 so I can't say I'm convinced the 3.5 block would bolt up with my 5-speed tranny and 3.0 heads.

IMO it just sounds all way too simple. Why hasn't this been done before? Tilley supposedly did it but the VQ35's been out for 4 years, why now?

Also, we know the 3.0 can't be stroked to 3.5, it's impossible. So how can the 3.5 be externally identical to the 3.0, and how can it fit on the tranny, heads, ect, ect, etc, I've seen a few 3.5s but I can't say I'm convinced about the size...

Tatanko

iTrader: (34)

How are you UNsure that the 3.5 block WON'T fit? It's been done several times now, I'm not sure I know what you mean here.

JClaw

iTrader: (17)

Maybe it does, but we're still not sure how much work is involved. Nobody who has done it seems to want to go into too much detail about how they did it. I know the 3.0 dimensions, anybody with a 3.5 care to give the 3.5 ones?

2988cm Bore x Stroke; 93 x 73.3 mm 10:1 Comp

Pist. pin hole diameter; 21.987-.999 mm
Pist. pin outer diameter; 21.986-22.001mm

Connecting rod Center distance; 147.60-147.7mm
Piston pin bushing inner diameter (installed); 22.000-22.012mm
C.rod small end inner diameter; 23.980-24mm
C.rod big end inner diameter; 48-48.013mm

Crank (main journal diam.)
0 59.969-59.975mm
1 59.963-59.969mm
2 59.957-59.963mm
3 59.951-59.957mm
Pin Journal Diam.
0 44.968-44.974mm
1 44.962-44.968mm
2 44.956-44.962mm Center distance; 36.61-36.69mm

pawnstar12

hey what is the part # for the nismo rod bolts because i went to the nissan dealer and they said they dont make them for the VQ30

Lonely Driver

Tilley has posted everything you need to know. Drop your motor. Take out all accessories and heads from old engine and put on the new block. Grind down the part where the crank position sensor is mounted so it's even with the transmission. Put eveything back onto the car. What is it that you don't understand?

Larrio

iTrader: (10)

the 3.5 is just the 3.0 block with a larger bore and longer stroke. Of course its the same size. The 00-03 share the same chassis, motor mounts, and header design.

"The VQ35DE was designed for even more low end torque. Displacement was increased from 3.0L to 3.5L using a longer 95.5mm bore (the size of your piston) and 81.4mm stroke (how far the piston travels up and down) versus the 93 x 73.3mm bore x stroke in the VQ30DE. The Maxima’s variable intake system and new valve timing control system, NCVCS (Nissan Continuous Valve Timing Control System), improves volumetric efficiency through optimal timing control proportionate to engine speed and intake manifold length, increasing torque 9% at 2000 rpm and an additional 3% at 3200 rpm. An internal valve system which adjusts intake length relative to engine speed, NVIS (Nissan Variable Intake System), boosts horsepower and torque (roughly 11% at low engine speeds). Internal components went on a diet lowering the inertia mass and reducing friction of reciprocating parts to get quicker engine response and a quieter ride. Lighter pistons were designed to include a reduced skirt length, reduced pin offset, lower skirt rigidity, and a tapered pin boss making them the lightest in the world for their size. The engine’s connecting rods are fastened by bolts only, to reduce reciprocating weight. A new long reach spark plug design improves cooling performance by increasing the water jacket around the plugs, which strengthen knock resistance and allowed the ignition timing to be advanced. The VQ35DE block weighs in at 35 pounds lighter than its predecessor. In the end, horsepower jumps to 250hp@6000rpm (240hp in the auto) and 240 ft lbs of torque@3200rpm (265 in auto) while the VQ30DE is rated at 190hp@5600rpm and 205 ft lbs@4000 rpm (222hp@6400rpm and 217ft lbs@4000rpm in the 2000+ VQ30DE-K’s).

http://www.nissanperformancemag.com/march04/ask_sarah/

hedayatiorm

how much maximum volumetric efficiency of vq30de engine?

nestorlugo

iTrader: (11)

I think around 2004!

vernk

the only ones I know of a part # 12109-31U00 and nut # 12112-42L00 or there is these

https://maxima.org/forums/all-motor/...ound-rods.html