Just custom make them, thats what I did.

 

I'm just wondering how do you know once the hr motor is turboe'd it will act any better than the non-revup motors it does have higher compression and isn't higher compression usually not a good match with FI. Even in comparison when talking about na performance between the non revup and hr motor of course the hr is going to make more power than the non revup it has higher compression which if we did that to the non revup motor it would also see hp gains. Also dont forget that the 03 is lighter than the 07 which you have to keep in mind and the earlier years still have more low down torque then even the 07,s.

the engine can also spin to 7500 rpm's unlike the non revup which gives it a bit of an advantage but as far as FI i dont see much of an advantage between the other engine and the hr other than maybe the hr's internals might be a little stronger but the higher compression will probably take the reliability of stronger internals away from the engine so its a trade off. I of course have not tested this theory but im just trying to use some common sense logic on the way i think things should work engine wise.

 

How'd you describe your problem to your nissan dealership? I had my clutch pedal stick to the floor and the clutch burn like crazy at the track... I'm thinking of taking mine in before I get the gears and Nismo LSD installed (or maybe after, not like they can really tell the difference or void the tranny for an LSD swap).

 

Well, my clutch pedal went to the floor and never came back up. I was stuck, 50 miles from home. That's what I decribed to nissan while I yelled at them.

Got a nice maxima as a rental and everything got fixed within 2 days. Thanks nissan you're the best.

 

I'm assuming the warranty on the slave cylinder is 3/36?

 

The warranty is me shoving my size 13's in their face.

I dunno what the warranty is, it's their fault though.

I also have a extended warranty though. BTW, i'm not talking about the dealerships around our area. This is a dealership that gave me a hard time which I won't give out their name was going to leave my car outside and they didn't want to keep my keys inside. I got really pissed off.

Nissan also didn't want to tow my car most than $100 dollars worth to west covina nissan where I wanted to take it because frankly they would have treated me the way I wanted to be treated. Instead I had to get upset with this other dealership.

They still got the job done, and I got my car. Regardless, the problem is not our fault it is because nissan left air bubbles in the slave cylinder in some of the early 07 z's.

 

Agree with the FI theory we are stil dealng with the same displacement , the only advantage with the dual intakes may actually not be that much of a plus since there smaller put together then a single DE intake. But its all speculation psi for psi in a FI app. Besides internals i dont think well see much of a diff. But the ability to make power higher in the RPM band thanks to the 500 extra rpms. All in all its a awesome motor, but my eyes are on the 3.8 RS motor. Which performance wise and build wise make our motors look like prototypes. lol. But yea...NA i think its really hard for a reg 287 to hit the 300rhwp mark NA. THe revup has a shot at doing it but at a high cost ratio. ANd the HR well, ...if something made for it na comes out it has the best shot.

 

Good job

I would of been ticked too. Glad to hear you got it taken care of. Mine used to go half way down to the floor on hard launches or clutch dumps/burn outs from 3k~3.5k. Since the one time my pedal stuck to the floor I haven't had it repeat... possible I worked the air bubbles? Just weird... Guess we'll find out next time I track it.

 

+1 thats what I been thinking...and this whole dual TB thing is also getting way to much hype...you see allot of the super cars out the that dont incorporate this...

 

Naw, it won't fix itself. That's what I thought when it did the half way thing. Once you keep adding power the worse it gets. When I put the test pipes and exhaust, thats when it took a major $hit.

When that pedal goes down and doesn't come up, you'll remember this thread. lol

The pressure comes and goes though, its very weird. Usually when it cools down, it starts working again but as soon as it warms up again pressure loss.

 

What supercar doesn't incorporate this?

All ferrari V8's, V12's have it, most supercars have dual if not ITB's. It's a known fact the more air you get into a engine the more power you produce.

One of the restrictions on the VQ engine has always been the intake manifold design. Why do you think people added spacers? The engine was being choked, the front two cylinders weren't given equal amounts of air.

 

I thought 350z's are 100% built in japan

if it has "JP1" or something in your VIN# then it's built in japan

Or maybe they ship it without fluids and then fill the fluids in north america??

 

Quoted for truth

Also, let me add:

when you equalize the power output of all cylinders, the overall engine power increases


For example, let's say cylinders 3, 4, 5, 6 are making 50 horsepower per cylinder,
and cylinders 1 & 2 are only making 45 horsepower per cylinder...

if you equalize 1 & 2 to make 50hp per cylinder then the overall power gain that's 10hp improvement. But equalizing the power output makes even more power, so you might gain like 15hp if you do that. I think that's why the spacers do so well in tests... because they equalize the power


When race cars are tuned, they tune each cylinder individually by monitoring EGT's on an engine dyno etc, which is probably the best way to tune an engine. Frankly I'm surprised places like GT Motorsports and Forged Performance don't have engine dynos

 

I guess I should complain to my dealership and see if they fix it now lol

 

Your 100% right about the VQde restrictions and its crappy intake manifold...

 

ahhh FINALLY! An educated civil discussion about cars and performance...without anyone getting mad, bashing,attacking or anything...the ways it should be! this thread is good so far

 

Called Nissan, let's hope they can reproduce it on my car.

 

They probably won't. lol

Mine had to literally drop to the floor and not come back up for them to replace it.

 

I'm sorry, what I meant to say was what nissan of north america says is when they were built some weren't bled correctly. They are all made in Japan you are correct.

 

I will call Nissan USA and complain. I replicated it today without a problem with a simple 3k rpm launch. I'm even going to tell them how to launch it. I don't care if they aren't allowed to drive it that way... I sure can. It's a sports car, what's the point if I can't... lol