who's gonna be the first person to step up with an '05 350/G35 with the 300/298 hp "new" motor and try to lay down some real power under boost??

It seems that everybody has given up on the stock internals for FI and that perhaps nobody might bother to try these supposedly stronger new rods and rod bolts (and pistons for that matter)... Obviously, for maximum life and power a built bottom end would be a necessity, but it would be nice (for bragging rights if nothing else) to be able to claim that the stock bottom end can handle 500rwhp... My car won't be here for months so I'm looking for somebody else to take the plunge!!

Jeff

 

Someone already IS putting down 500 WHP on stock internals. And its not an 05..search this forum..

 

Link: https://my350z.com/forum/showthread....hreadid=107777

 

yeah, i've seen that... but to me, "one guy has made 500rwhp on the dyno" doesn't exactly equate to "all VQ35's can handle 500rwhp long term on the street"... considering the number of broken motors at even 400rwhp, I would say there's plenty of room for improvement in the bottom end... i would just like to see combinations (kit X, with boost level Y, running fuel Z) that before were resulting in blown motors and see if they live any longer on this new motor...

at this point it's so abstract as to what has even changed... even the parts counter can't tell you exactly what, if anything, has changed in the motor... everybody knows the rods and rod bolts were weak before, but nobody seems to know if they still are with the new motor... Nissan suggested that these areas have been improved, but my question is "by how much?"... an extra 5% of strength doesn't do much for my confidence... on the other hand, if the new parts were twice as strong, that would be big news... know what I mean?

 

Oh I know what you mean but you said

So it sounded like you were just looking for someone to do it. So I linked his....Yeah it'd be great if we could confirm the stock bottom end is good at 500 RWHP but I don't think its going to happen. Even the Nissan QA Test engineers have said that past 465 hp you are almost guranteed to lose your rods on a stock motor.

 

Jeff
I dont think to many people will try until they crack the 05 ECU . Did you happen to call the DMV to find out if that plate you are looking for is registered ? I havent seen it
Bill

 

I have an 05 and iam gonna APS TT kit it soon.

 

You know, my initial reply after reading your post was, "Gee, 8 whole posts, not even a Z owner yet, and he's already in here layin' down a challenge." However, the fact is that you're right, it will be interesting to see if the new '05 engines are stronger. Problem is that even if they are marginally stronger, they likely still won't touch the strength of a good set of forged aftermarket internals. As an '04 owner, it doesn't matter to me if the '05 engine is stronger because rather than upgrade to an '05 stock motor, I'm gonna build up the one I have so that I don't have to wonder if I'm at my engines limits. If I were an '05 owner, it may mean something that I'm safe up to around 500WHP, but in the next few years, that won't be a big accomplishment, and I'll end up building a new bottom-end anyway, just to keep up with the Jones'.

Oh, and welcome to the forum!!!

 

I don't think the 05 ECU will be different to earlier model ECu's, will be able to tell you in apporx 3 to 4 weeks, hopefully there's not much a change.

Peter

 

kco, just to give you a little background on me so you don't think i was trying to come off as "challenging" or arrogant towards anybody in particular: I have a pretty extensive background with respect to modifying cars. I have built everything from Mustangs and Camaros to Supras and Civics. I own a shop and a dyno and have personally done all of the design, testing, fabrication, tuning and installation work on all of my project cars (I don't mention my shop by name because I'm not here to advertise or attract business, I'm simply doing research on my newest project car). My 640rwhp Supra is actually the lowest power project car I've ever built, and I don't intend to lower that minimum with my G35. I've worked on platforms at both ends of the OEM quality spectrum -- our Mustang, which couldn't make crap for reliable power stock, now makes 1400hp and runs dead-reliable low 8s on radial tires, but basically every piece in the driveline had to be replaced to get there. Our Supras, on the other hand, have run 9s on completely stock bottom ends and drivelines.

Where I live -- the land of rednecks -- people are big on carbs, nitrous and big blocks. Imports are laughed at and thought to be weak in most cases. This is one thing that i've always loved about the Supra. I can walk up to Joe Musclecar and say "gee, you had to build your motor and tranny and it's still blowing up while only making 80% of the power that my little riceburner makes on stock parts!!". Might sound like I'm an *******, but when you constantly hear crap like "why don't you move to China if you like imports so much" or "f--- your jap crap" it makes you a bit bitter at times. Anyway (i'm losing focus here!) with the G35 I would love to be able to claim the same level of over-engineering in these types of "verbal scuffles". I'd love to spank a Cobra or SS and not have to say "well, i do have a fortune in the motor" but rather "nope, it's pretty much stock". If it's a question of reliability, I'll build it, no second thoughts. But it's just nice to have the stock stuff take you farther than most.

So in the end, i'm not challenging any person in particular, but rather the cars themselves. There was a day, way back when, when people thought 400hp was pushing the limits of safety on a stock 2JZ. Now if you are only making 600rwhp people ask "what the hell is wrong with your car?"

I'll tell you this much, in areas where it really counts, I think the VQ35 has it "going on". Our 2JZ race heads have identical portwork to the Bullish Solaras (6 second 1/4 mile, over 200mph for those that live in a cave). Our head porter also did the work on the Performance Motorsports 350Z. I believe his comment was something along the lines of "the VQ35 head will **** all over the 2JZ head when done right. This year I think you will see BIG (2000+) hp from the pro VQ motors". With that in mind, I guess I don't mind the thought of having to put a few hardparts in the bottom end. Having a top notch set of heads to start with is a huge headstart (no pun intended) in the quest for insane hp. You can't always have everything, and if you're only going to get one thing, good heads would be pretty high on the list.

Anyway, enough rambling... good luck to everyone in their quest for more power!!

Jeff

 

I agree totally.....power is in the head.

 

can you sell my your supra... damn i still wish i had one and sometimes wonder if i should of kept looking for a good low mileage one! dammit!

 

Many respected tuners and racers in the business are calling the VQ motor the next 2JZ. The enginerring that went in to the VQ is really outstanding for a stock motor. Guys are already pushin 1600whp on these things....it will be interesting to see where it goes.

In my opinion, a sleeved VQ block is just about bulletproof in my humble opinion. The VQ heads and block are an awesome plateform for upgrages.

I have no doubt that 500whp to 600whp can be posssible on a stock motor on the dyno. But nobody knows how long the motor will last when driven on the steet...aggressively. Like you said..one dyno number...is just that...one dyno number. It's more an indication of great tuning, rather than a strong bottom end.

The responsible and sane thing to do is build up the bottom end if you end to regularly and daily-drive a 400+ WHP VQ motor.

Stick around...things are about to get REAL interesting, since there are 30 of us building up our motors with Pauter forged rods, Arias forged pistons, and ARP Head/Main Studs. It's going to be crazy!

When Nissan announced the "new" VQ motor...I yawned. I am a marketing guy..and this sounds like marketing goop..not real tangible improvements...total snoozer of an announcement. The pistons are still shitty castings, and the rods are still paper thin.

The question is...who is going to be the first person to hit 700whp on the stock sleeves, since I think only one or two people have installed sleeves/closed the deck completely.

 

the '05 Motor is strengthened but the rev limiter was also raised 200RPM. This means more HP but the trade-off in reliability probably makes the '05 on par with the earlier Z engine running at the lower RPM...

 

damn after reading gq's nice statment... i really wish i had the money to invest in a turbo and build the motor up.. lol dammit!... me and my z with just an aem intake lol

 

It's worse for me; at least you have a Z! I was debating between the Z and the more luxury-oriented TL. The Z salesman never called me back, and I when I went into the Acura dealership just to "looK", they actually said "OK" when I told them I wanted an 04 TL with Nav for 33K. Sometimes I kick myself.

BTW, 2JZFan, welcome to the boards, and excellent way to make an initial splash. You didn't come off as "cocky", just eager :-)

 

One quick question though. Did ALL of the '05 motors get reworked with stronger rods or just the track/anniversary edditions? I think the initial post was refering to the motors starting with 300/298 (Track/anniversary models with stronger rods and whatnot) being able to handle 500hp reliably. Maybe I missed something here?

Jon

 

Only the Track and 35th anniversary manual transmission have 300hp.


BTW, that 500rwhp...was actually 431.6 if you correct the equation (the hp and tq scales were off so they didn't cross at 5252).

 

BTW, that 500rwhp...was actually 431.6 if you correct the equation (the hp and tq scales were off so they didn't cross at 5252).

Please carify your faulty math.

Tuan