The 350z's VQ35DE Motor. ( High HP )

OK, to start the thread everyone should know that the 350Z has a VQ35DE motor. ( Unless my eyes decieve me and i cant read my own handwriting. )

What is offered for those of us who have a need for the stupid amounts of power it would take to start blowing block doors off cars such as the Mitsubishi 3000GT VR-4 ( my last car ) or the corvet Z-06..?

Superchargers, Turbos, Twin Turbos ( such as the peope at Car V2 have put together http://carv2.com/site/project_detail.cfm?id=247 ), Block build ups...

I am personally looking for a VQ35DE block to build into a high HP engine to drop into my Z. When i say High HP, I'm talking about dropping the compression ratio, stroking the engine to 90mm as opposed to the stock 81mm, possibly sleveing the cylinder walls, porting and polishing everything, forged rods, forged crank, gutting the cats, opening up the exhaust, larger injectors with a stand alone fuel management sytem, twin turbos running aprox. 25 lbs of boost...

producing about 700-750 screaming little ponies...

So QUESTION: Where i can find a VQ35DE motor, how much one costs, if there is a better alternative to the VQ35DE block, what are your thoughts on such a project, what would you put on yours? Post it here or forever hold your peace.


-Rone Phillips
-71 Chevelle SS 454 ( RIP )
-91 3000GT VR-4 ( RIP )
-04 350Z Roadster ( VROOM!!! )


"Don't drink and park, accidents cause people."

Sounds like the AEBS kit will take care of most of your needs. The sleeves included with the 4,3L stroker kit can handle up to 55psi.

http://www.aebsracing.com/products.pl?product=vq35stroker

4.3L ???? :eek2: Sick... oh and if you need a block (I'm thinking doing the same thing but stopping at 550-600HP) ask a nissan dealer... or a junk yard...

As we being to build the AF 350Z project car to be a race car in a competitive series in 2006, we will be documenting every step of the way for our members. For road racing, Twin Turbo appears to be ideal, but we have no plans in stroking the engine to 4.3 liters as that can pose durability issues, especially at higher RPMs.

How so? re-enforced engine parts not bieng durable enough? That doesn't make sence.

With a really long stroke, you run a risk of the pistons rubbing against the cylinder walls at high rpm levels. The pistons are just moving too much, and it gets hard to keep them in line.

The 4.3L is probably a low to midrange torque monster.

exactly. Think of the natural tendency of the way the piston moves. It does not want to move directly up and down as it is being made to. If you increase the vertical motion of the piston, unless done with perfect physics, you will have more wear on the piston and the cylinder walls.

How much HP do you think the VQ will pump out? I'm talking the highest it could possibly get while still running on street gas and being street legal.

How much HP do you think the VQ will pump out? I'm talking the highest it could possibly get while still running on street gas and being street legal.

I have no idea how much on the pump gas and in street legal form. I would guess that you could get away with 500whp or so, maybe a bit more. It really depends on who is tuning the car and how they do it. For example, SGP got something like 560rwhp out of a Z33. Pretty sure it was on pump gas, but I can't remember if it had low comp pistons or not. Don't know how the emissions were, either.

For an NA VQ35, 310hp is supposed to be the most Nissan can squeeze out while still legal. Race versions put out 450hp.

A guy from AEBS said one of their built VQs should easily make 1500hp+, though. Obviously, that would have to be in some sort of race tune.

Okay I see what you mean now, now is there a way to make it wear less but keep the 4.2L (for the turbo set up they offer) size? Other than that I believe I've seen a 3.7L or 4.0L stroker, I'm not sure what boost I'll need but I want to be able to have about 550-600 HP to the wheels on a Greddy TT set-up ... If I get 500 with out crazy boost then I'll be happy, being by some limit IE: Octane of gas or some uber street illegal mod I'd have to do.

To keep wear down, keep your revs down.

IMPUL makes a 3.8 stroker, but it's probably on the expensive side, especially since you'll have to pay for shipping from Japan.

There will be a factory VQ40 soon, offered in the new for '05 Frontier, XTerra and Pathfinder.

I found the link to the SGP-tuned Z33. Over 600rwhp@17psi on pump gas.

http://www.houston-imports.com/forums/showthread.php?t=122677

Awesome so my goal is possible :bigthumb: thanks for the info.

No prob. :)

how far do you think you could take an NA Z? hp wise

If I had to guess, I'd say maybe around 400 RWHP. Perhaps a bit more, but unlikely. This number short of being a full racing engine ofcourse.

how far do you think you could take an NA Z? hp wise

Still street legal? I'd guess around 400 crank hp at most, and that would be with the 4.3L stroker kit.

Full race, who knows. Nissan has race VQ35DEs that make 450hp, but with 4.3L, that might go up to around 500hp.

thanks
i was figuring that the TT would be the cheapest way to go to get to 500 whp, but i would prefer an NA motor making the same power.

most i've seen driveable NA was about 290 to the wheels. that was with intake, exhaust, pulleys, cams, plenum. but that was a little while ago. someone else may have that beat by now. this was also in 93 octane.

jon

Actually the 4.2 stroker kit looks to be more reliable than expected. It says they have lots of support for the pistons in their new movement area

On another forum last week I saw someone post about a 1000rwhp 350Z drag car. I figured it had an RB26 or maybe a sleeved/stroked VQ35, but it turns out that it was a stock block VQ35! The pistons and rods were replaced, and that was it.

I had kinda forgotten that VQs have iron cylinder liners. Maybe that explains how a guy with a VQ30 Maxima got 538fwhp on stock internals. If you want lots of FI power from your Z, just get stronger rods and low comp pistons and you should be good to go.

but I would just love to stroke it to 4.2 litres, even if it's just for bragging rights :P

i'm really considering that stroker kit but to get it with the 8.5.1 compression i would have to have the tt waiting and all of that combined would be around 15k at once. i don't mind spending that kind of money slowly but to do it in a month.

yeah I'm thinking the samething but I don't want to make the engine more likely to throw a rod or something... can you guys imagine the sound of a 350 with a 4.2L engine? .... omg... *drools*

Nice posts guys, now if I may add some of my ideas. Ihave 2 Z32's both built pretty much and one built ALOT. I have a 3rd one I recieved back from a guy that didn't finish paying me for and had blown the engine. After looking at costs to get a JDM VG30DETT engine, desided to look into the VH45DE swap. Well I found out that the VH45DE would bolt up to my Z32 transmission that did it. Got a VH45DE engine and started the project.
Now in all my research on the VH45 and VK45 engines I learned Infiniti builds a engine based on the VK45DE engine but its a 3.5 DOHC V8.

http://www.nissanperformancemag.com/may02/infinitiengine.php

Now I'm in the process of installing a vh45DE in my one Z32 I buy a Z33. Being it has a 3.5L engine figure it would be a good platform for a really equalizer for a street rod plus have good looks. But kinds disappionted with it's performance, as I have 2 really hot Z32's so I wasn't compearing apples for apples and not really happy with the performance with the Z33 started looking into doing a VK45DE swap. The swap would be very easy to perform and I figure this. If Nissan used a VK45DE as a building block to make a VRH35ADE V8 DOHC engine instead of there VQ35 V6 there had to be a reason. Both engines are 3.5L, both are DOHC, 4 valve engines. weight wise the VK45DE is almost 100 lbs lighter than my VG30DETT engine. So now I contact Ed Pink Racing Engines who does alot of work on the Infiniti 35A racing engines to suck as much information as I can about this engine. I tell him my plans on swapping a VK45DE in my Z33. Here's what he tells me, stock with a good exhaust and a free breathing intake that engine should make about 425-450HP. You know my next question, what if I hang a couple of turbo's on it and do some ECU trick's on it. His response was, without cracking the engine open could double that power, like 850-900 HP. Well after I wiped my butt. I thanking him, hungup and my brain has been running wild ever since. I know without any doubts with my experiance I have with the VG30 engine I can pump out 2000+HP from this engine for serious racing, and 1,500-1,800 for good solid street racing.
I anyone wants to learn more PM or eMail me and I'd be happy to tell you all I know. I just perfer not to do it in a thread as I neather have the time or patience to argue with the few BS artist.
Example: On the 16th of this month a friend of mine set a new World record for a stock production GT car. A 1994 Z32TT Timed and certified by SCTA and FIA and offically now holds the record at 224 MPH. I posted the release and email from my friend and this one person said it's BS, a Supra was faster, and no stock Z32 can go over than 178 MPH.
So like I say a few spoil it for those of us that want to pass along information and to help each other and meet new friends with the same interest..

I wasn't compearing apples for apples and not really happy with the performance with the Z33 started looking into doing a VK45DE swap. The swap would be very easy to perform and I figure this.

You might want to take some measurements before you go ahead with the swap. The Infiniti FX, currently the only FM platform vehicle to use the VK V8, has a different Macpherson strut front suspension, possibly to make room for the V8. The Z33's suspension may not accommodate the VK. Just be careful.

If Nissan used a VK45DE as a building block to make a VRH35ADE V8 DOHC engine instead of there VQ35 V6 there had to be a reason. Both engines are 3.5L, both are DOHC, 4 valve engines.

Infiniti uses the VRH35 in IRL racing, where V8s are used. There was no reason to go with the VQ V6, even if it were allowed.

You might want to take some measurements before you go ahead with the swap. The Infiniti FX, currently the only FM platform vehicle to use the VK V8, has a different Macpherson strut front suspension, possibly to make room for the V8. The Z33's suspension may not accommodate the VK. Just be careful.

Thank you for your advice. I've been very careful in my measurements as I have both the Z33 and VK45DE engine. Also a Z32 with a VH45DE swap in process. Your advice should be taken anytime anyone attemps to do any swap.



Infiniti uses the VRH35 in IRL racing, where V8s are used. There was no reason to go with the VQ V6, even if it were allowed.

Once again your right, in IRL racing V8's are used, but in reading the rule book it say's no engines more than 8 cylinders allowed. Nothing said about 4's or 6's.
Being a Metallurgical Engineer with a minor in Aeronatical Engineering, I've been trained to work with facts and not theory's. Now idea's and opinions are OK if the fall into the fact guidelines. I start looking at facts.
First, Newton's law, says things in motion tend to stay in motion. Meaning a piston going up, when it reaches the top of the stroke wants to keep going up but the rod connected to the crank on one end won't let it and stops the piston on the other end from continuing going up, and causes the piston to change direction and start moving down. This movement is called piston speed, that is from point "A" to point "B" back to point "A". Now this limit due to modern metal technology is limited to 4,100-4,400 fpm (feet per minute). This I understood but getting back to my first question, why did Nissan choose the V8 rather than the V6? I wanted the answer.
Know how important gearing is in racing and the more RPM you can turn a engine the lower final gear ratio can be used making a car quicker out of the turns, and the Infiniti cars were using 4.11+/- and turning 10,000+/- RPM. Now I have all my facts but I still don't have my answer is to why they used the V8 instead of the V6.
Well I found the answer. The VK35A engine has a 2.52 stroke, and at 10,000RPM with 4.11 gears to go over 200MPH the piston speed would be 4200 fpm, acceptable. The VQ35 engine has a 3.02 stroke, and at 10,000RPM with 4.11 gears to go over 200MPH would have a piston speed of 5033 fpm, total unacceptable, the engine would blow. Smart boys at Nissan. Now I had my answer, and they had about 200 fpm extra for a safe margin.
Now some of you might want this program, it's free and really good.
It's called Virtual Engine 2000

http://www.virtualengine2000.com/ProgramDownload.htm

nice research. i applaud thee.

nice research. i applaud thee.

Thank you very much Mr. K3. Taking a bow

There is a little bit of mis-information up there that I wanted to clear up. It is not the stroke that causes any more wear on the pistons, it is the rod ratio of the motor. As the rod ratio gets worse (the rods are shorter compared to the stroke) the angle of the rod becomes greater. Then when the crank pushes the rod up or down it will push against the cylinder walls more.

Not all stroker kits make the rod ratio worse, some use a longer rod and move the wrist pin farther up into the piston. Also, the range of acceptable rod ratio's is pretty big. The stock rod ratio for a VQ35 is 1.77, that is nearly perfect and the AEBS stroker kit brings it down to 1.6. That is still a very workable number. A lower rod ratio will also give you more torque, but it will lower your redline. Once you get a rod ratio under 1.5, then it can become an issue. I know of several DSM guys using stroker motors with a rod ratio of 1.5 (including myself) that spin them over 8k rpm. So, I wouldn't be worried at all with going with the AEBS kit, as long as the machining is done correctly.

i know this is a bit old but you may want to see what jgtc guys are running they have turbo vq's.

Yeah, they have twin turbo 3L VQs.

Quick question, im looking to spend about 7k on a twin turbo anyone got any inside info on what works best on a Z currently? (this is for stop and go drving, just want a little more acceleration...one more thing ive got an AT.)

Were could one start looking for information about this particular engine. Interest is in details, specifications. I have a plan to "balance and blueprint" but need a "map" to start with. Thanks.GZ

Zgringo thnx for the awsome post about the engines. Cleared many things up for me.

Mr. 350Z in responds to your twin turbo question...I have heard that Greddy turbo is pretty good for just regular street driving ( Stop an Go ). If you haven't already check it out. O and I heard this one other austrilian company is making a twin turbo kit also making a little bit more power then the Greddy. I heard it can handle more pressure then the Greddy turbos also. I believe the company is called ProjectS or something like that. Let me find out the information more clearly and I will post it up.

I have a new block for sell.

how far do you think you could take an NA Z? hp wise
500rwhp, maxed out, probably not street legal. Probably 350-450rwhp for street legal though.

On another forum last week I saw someone post about a 1000rwhp 350Z drag car. I figured it had an RB26 or maybe a sleeved/stroked VQ35, but it turns out that it was a stock block VQ35! The pistons and rods were replaced, and that was it.

I had kinda forgotten that VQs have iron cylinder liners. Maybe that explains how a guy with a VQ30 Maxima got 538fwhp on stock internals. If you want lots of FI power from your Z, just get stronger rods and low comp pistons and you should be good to go.
Certainly wasn't a 350Z forum. The only 350Z that is making that kind of power is the Performance Motorsports 350Z, and it has ~1400hp, and the only thing that isn't upgraded on it, is the crankshaft and intake plenum (although it was only using Darton sleeve liners).

i know this is a bit old but you may want to see what jgtc guys are running they have turbo vq's.
The JGTC 300 series 350Z's are N/A VQ35DE's.
The JGTC 500 series 350Z's are VQ30DETT's.

Neither really pertain to this conversation.

Quick question, im looking to spend about 7k on a twin turbo anyone got any inside info on what works best on a Z currently? (this is for stop and go drving, just want a little more acceleration...one more thing ive got an AT.)
Total? Or just for the kit? I would suggest GReddy with all of the goodies (fuel system, c&c angle sensor wire, etc., etc.) or APS.

OK, to start the thread everyone should know that the 350Z has a VQ35DE motor. ( Unless my eyes decieve me and i cant read my own handwriting. )

What is offered for those of us who have a need for the stupid amounts of power it would take to start blowing block doors off cars such as the Mitsubishi 3000GT VR-4 ( my last car ) or the corvet Z-06..?

Superchargers, Turbos, Twin Turbos ( such as the peope at Car V2 have put together http://carv2.com/site/project_detail.cfm?id=247 ), Block build ups...

I am personally looking for a VQ35DE block to build into a high HP engine to drop into my Z. When i say High HP, I'm talking about dropping the compression ratio, stroking the engine to 90mm as opposed to the stock 81mm, possibly sleveing the cylinder walls, porting and polishing everything, forged rods, forged crank, gutting the cats, opening up the exhaust, larger injectors with a stand alone fuel management sytem, twin turbos running aprox. 25 lbs of boost...

producing about 700-750 screaming little ponies...

So QUESTION: Where i can find a VQ35DE motor, how much one costs, if there is a better alternative to the VQ35DE block, what are your thoughts on such a project, what would you put on yours? Post it here or forever hold your peace.


-Rone Phillips
-71 Chevelle SS 454 ( RIP )
-91 3000GT VR-4 ( RIP )
-04 350Z Roadster ( VROOM!!! )


"Don't drink and park, accidents cause people."read more you can get 700 hundred whp out that motor without going that far.

Zgringo thnx for the awsome post about the engines. Cleared many things up for me.

Mr. 350Z in responds to your twin turbo question...I have heard that Greddy turbo is pretty good for just regular street driving ( Stop an Go ). If you haven't already check it out. O and I heard this one other austrilian company is making a twin turbo kit also making a little bit more power then the Greddy. I heard it can handle more pressure then the Greddy turbos also. I believe the company is called ProjectS or something like that. Let me find out the information more clearly and I will post it up.one company in australia is called aps. that air power systems and it makes one of the best twin turbos kits 4 the vq35

I just joined this sight and I see a lot of u guys are not doing your research. Last year I totalled a 480 wheel hp g35. I DID NOT SPEND OVER 10.000. NOW I AM TRYING SOMTHING DIFFERENT.SUPERCHARGED G35. bIG MISTAKE,BUT I AM GOING TO MAKE IT WORK.17PSI IS MY GOAL AND I KNOW HOW TO GET THERE