I found this on ebay:

http://cgi.ebay.com/ebaymotors/Coswo...31796763QQrdZ1

This is an expensive mod, but its an alternative to turbo power. The heads are ported, cc'd and larger valves are used. I bet just adding these heads will get you get 40-50 horses. If you throw in cams, for another 20, and all the usual bolt on mods, I bet 100hp is no problem.

Obviously, since these are expensive they arent for everyone. What do ya'll think?

 

hell yea!, cosworth is damn expensive, but good stuff..

 

Maybe when I blowup my motor.

 

Easier to get warranty work done for sure. Not as obvious as a big as@ turbo in the engine bay.

Its a top name but you also have to spend even more big bucks to allow more air/fuel in, and better exhaust. You get into resizing the injectors=> reprogram the ECU. $$$ I never calculated how much WHP we can get out of the stock injectors, but I suspect once we pass 260-270WHP or something, a whole new fuel delivery system is in order. Not sure how far you can go by just increasing fuel pressure.

 

Are they better than Hot Shot headers?

 

our injectors are good for 300-330hp I belive since we have 330cc injectors from factory.

 

I think Cosworth is coming out with a VQ35 crate engine soon.

 

Have you taken a look at this. Might get you a little more grunt. Definitely a torque monster.

http://www.aebsracing.com/products.p...ct=vq35stroker

 

WOW That looks like major surgery to get those put on, wonder how much that would cost for install. If I had the money I think I would go that route instead of a turbo/SC. Just seems like a more substantial and foundational piece to build on. 40-50whp would be huge in one single mod.

 

Very nice, 2 questions what does the DE at the end of VQ35DE stand for, the new VQ is HR which is High Reving and with all this power is the stock 6speed & auto 5 and 4 speed gonna be able and willing

 

So Ideal ASPIRATED engine for the 6th Gen would look like this.

AEBS 4.2L low compression kit. Turbo 8.5 : 1 / 100mm, engine size 4231.16cc
Cosworth HI-Flow heads
Squires Twin Turbo Remote mount system with intercooler @10lbs.
Nismo Cams
HotShot Headers, heat wrapped.
Technosquare Tuned ECU.
Hi-Flow injectors and and pump
Oil Cooler

I bet 425-450WHP is possible with the above toy.



So Ideal NON-ASPIRATED engine for the 6th Gen would look like this.

AEBS 4.2L N/A 11.5 : 1 / 101.5mm, engine size 4269.35cc
Cosworth HI-Flow heads
Nismo Cams
HotShot Headers, heat wrapped.
Technosquare Tuned ECU.
Hi-Flow injectors and pump
Oil Cooler

I bet 350WHP is possible with the above toy.


What do you guys think, also full syn***ic oils and hi-performance gaskets everywhere.

Kamski

 

Totally different item mang. These are heads, the part where your camshafts sit.

 

I'll take the high compression config. Just no room for turbo and my Hotshots remain a good investment.

 

DUDE, I GUESS you dont knwo what an STS turbo is.

Well let me show you.

http://www.ststurbo.com/single_mustang_install_pics

You dont need room dudley

 

I know all about the STS setup. I also know they don't have a setup for our cars. And, I don't want all that piping under my car. My car weighs enough as it is.

 

+100lbs +100hp = 200x more fun

Ok............. so a twin turbo Squires maxima is out of the question? I seriously think a well built engine with the remote mount setup could be a
killer powerhaus.
Cause I see a lot of the G35 twinturbo threads and 350Z twinturbo threads.....

And who is Carlon Mencina?

Kamski

 

I clicked on this thread expecting a serious discussion..........

 

oh god, please tell me u didnt just do the Carlos Mencia thing. His show sucks, he sucks at life, and hes a

 

 

......................

 

I wouldn't mind some of these....

 

How about a set...

 

Both ideas are aspirated (that just means they breathe air) but stock is naturally aspirated and turbo is forced induction.

 

3500$ for only 50hp... not incl. labor, headache, etc...

...wouldnt it be ALOT easier to get a 75-100 hp shot... jus my 2

 

Difference is nitrous is for *****'s. Those babies give you power all pedal all the time.

 

I see your point about NOX being on/off. I think I would rather spend the $$ on a turbo first. If I ever change or port the heads, its because I am also adding better rods, pistons, cams, intake.

If you ever enter a car show, which mod do you think will get the most awe and praise: the Cosworth heads or the twin Turbos? Either way will require major front end upgrade to get the power to the ground. That's why I am only looking at exhaust, ECU upgrade and other common mods for now.

 

Twin turbos are always going to give you the wow factor. Personally I'm a NA kinda guy.

 

Yeah Id rather be NA. Its more stealth.

 

Cosworth was teamed up with Mercedes back in the day to create their racing division line of cars, like you have the AMG today. This is some serious ****!!

 

I know its expensive and its not for most people, but i think its a great way to go for serious HP because these heads flow and Cosworth is very very reputable. They will make everything else you have done to the car, work better.

 

There are cheaper ways to make good power on an n/a VQ35. Porting and polish the existing heads, raising the compression to 11.5:1, throwing in some cams like JWT's or Tomei 264/268's, and/or a modified stock manifold or Z manifold. A built head should be the VERY last thing you do if you're staying n/a.

 

These might yield more power and they might not. If everything else is stock, then my guess is that they wouldn't do a whole lot. Change the cam and computer to deliver and make use of the POTENTIAL the heads give then yes...they could add quite a bit.

Just sticking on a set of heads won't improve anything though unless the ones they were replacing were already at their limit (restrictive) with the other related components. Oh, and they will reduce your compression ratio everything else being equal (same gasket height, same pistons, etc.).

BTW, the price they are asking is highway robbery. Think of it this way, why would a set of 6 cylinder heads cost three times as much as a set of V8 heads of the same quality (Roush, Ford SVO...errr...what used to be SVO, ARP, etc.). Answer: Because folks are willing to pay that much I guess.

 

Until someone comes out with cheaper priced heads . .

 

...

Optimize the set-up before thinking that the more money spent the better.

 

AEBS 4.2L low compression kit. Turbo 8.5 : 1 / 100mm, engine size 4231.16cc
Cosworth HI-Flow heads
Squires Twin Turbo Remote mount system with intercooler @11lbs.
Nismo Cams
HotShot Headers, heat wrapped.
Technosquare Tuned ECU.
Nismo Hi-Flow injectors and and pump
Oil Cooler

Would that make sense, what could this engine possibly develop? HP/TQ?

Thanks for the input.

Kamski

 

You can't just throw parts and money at a car like that man...




What are your goals?

 

500HP like the modded S4 bi-turbo, now I know its a lot of HP for a front wheel drive car but can it be done, or do you have to re-inforce the mounts, tranny etc?

I guess this is a generalization but for me If i had this coin I would track this car at Mossport here in Ontario. Plus once can never have enough HP

Kam

 

These 2 cannot happen together. And Technosquare, at the moment, has no F/I program for any FWD VQ.




If you got it, why not ------>

 

My suggestion would be, if you're serious, take your car to a reputable shop and tell them what you want.

If you want NA 400hp or 400hp FI tell them that. 400 NA power will probably cost more because they will probably have to go into the engine.

On the other hand turbo will be expensive because they will probably have to fabricate custom exhaust manifolds.

The shop that did my headers didn't seem intimidated by the idea of a custom turbo kit. I think if I had about 15K they would do it.

 

If you want 400hp just save yourself the hassle and buy a TRUE sleeper sports sedan - Caddy CTS-V or SRT-8. The CTS-V comes stock with 400hp, runs a 4.3 0-60 and has a top speed of 165. Also has winning RACE PROVEN performance that will smoke maxi's day in and day out. Throw a Magnussen or Mallet SC on the CTS-V and you will have 500hp and no max will even be able to breath your exhaust fumes.

After all of your expenses of trying to make 400hp on a FWD Nissan, you would have spent more money on the Nissan than a true sports car and are still stuck with a FWD car IMO.