I am not all that fimilar with the G35, I have a RX-8 which I am trying to sell in hopes of getting a G35. I have a few questions: How is the Greddy Twin turbo kit? What is the best form of FI out right now? How much boost can the motor stand? How much power can the motor stand? How much power can the drivetrain stand? I spoke to the Greddy techs and they said I could run about 420hp with out modifying the block, what do you guys think? What would it take to make it to various HP levels, what would it take to get to 500hp, 550hp, 600hp, +650hp? Basicly how much HP can I get with out rebuilding everything? How do you guys fair as far as ECU fighting the piggyback systems, do the G35s have fuel trim in the factory ecu? The factory RX-8 ECu was always trimming itself out and totally messing up our tunes. What are the suggested AFR limits? And anything else I should know before I buy one and try to build it. I afraid to push my RX-8 any further becasue at 300whp things have already started to break it just wasn't built to handle power and I don't wan to drop the money to rebuild everything, I know in the long run i can get more power for less with the G35 but i don't want to make the same mistake I made with the RX-8.

 

The best is always very subjective. The search function is your friend as well as...

 

true....................+1

 

There really isn't a definitive answer to "how much power can the G35 take" as we're still finding out, there i a guy making 525whp on the stock block with his greddy kit and has no problems.. tuning makes all of the difference.

400whp seems to be relatively (emphasis on relative) safe if everything is installed correctly.

 

yeah I did a little reading on here last night and that seems to be what I am finding is that the factory block and drivetrain cand can stand up to at least 500whp, which that makes me very happy. But yeah you are right it's all about the tuning when it comes to blowing or keeping a motor.

 

I would be careful, very careful about how far you push the stock internals on this motor. The threads are loaded with experiences and you can search them out and draw your own conclusion, but here is mine.

My set up, which is conservative, is running approx 425 hp at the crank and 360 rwhp, using 7lbs of boost on an ATI centrifugal supercharger. However, I use the car on the track as well as the street, and it handles the power very well. 22,000 miles and a dozen hard charging track days....not one single teensy problem, with the exception of two shredded cog belts from stretching, and a set of pulleys that eventually after 18,000 miles got worn down enough that they had to be replaced (no charge, covered by warranty...THANK YOU ATI!). The risks of going higher involve of course issues associated with pre-ignition or detonation from your fuel mix getting too lean, and overstressing your rods/pistons so that you bend/break them. Another issue is turbo versus sc, and we all know that while you can get some more hp from the turbo at the high end because of the parasitic loss due to the sc belts, there is also the engagement of the power, and the turbo is a bit late and a bit more violent and that can result in just enough to bust the guts when you are getting up to the limits. (centrifugal sc units are basically the same operationally as the turbo, they just have less plumbing and heat).

Everybody has a different opinion, and that is fine. Mine is that if you push more than about 380rwhp and 450crank hp you are asking for this motor to blow. That is if you are going to drive it hard on the track or street and expect to maintain reliability. Rebuild the motor and then you have a totally different story. But again, use the brain before you strain the wallet. Once you get over about 500 crank hp and certainly at 600hp you are starting to have a challenge getting the power to the ground without spinning the wheels. You will get more acceleration but.....for that extra 100hp and unquestionable reduction in engine life you are spending about ten large ones. 450 hp is 2hp per cubic inch (215 ci is 3.5L roughly). Any tuner will tell you that is pretty respectable. The money will be much better spent imho on the suspension and brakes so you can "drive" the car fast, as opposed to point it, stand on the throttle and hang on in a straight line. They use test monkeys in sleds for that.

Have fun and be safe.

 

Very good advice Eagle1.

Having driving Eagle1's Supercharged Coupe I can confirm that it drives very well, delivering plenty of seamless power from off idle to redline.

DaveO

 

cool thanks for the help eagle1. I just wanted to see what had been done ansd what was performing well. And from what I hear I am very pleased, I heard from on guy that he has been running 400rwhp and 400ftlbs of torque for a year with no problems and the I have read of lot of people on here around 500rwhp with no problems. This makes me feel that the g35 is the right choice.

 

The car has good "bones" for a road and track car. The front-mid placement of the block allows for a very good balance of 53/47 distribution of weight, and most of the key part components are shared with the 350Z, so lots of nifty upgrades available in many areas. It is NOT a good configuration for a drag car. It is too heavy, and not enough low end torque. Get it up above 5000 rpm however and it is another story.

Putting another 150hp into it, or any other car, pays big performance returns. But for the money, putting the dough into the handling pays even more incredible returns. The car handles marvelously for a luxury coupe in its stock set up. But put some stiffer sways on it, coilovers and drop the center of mass an inch, wider rubber and better brakes........and it becomes a beast of a driver's car. And with the 280hp that handling is enough NA to just maul most cars out there while still keeping the warranty on the motor.

You can go a lot of ways. If you are familiar with FI and will pay it respect and maintain it religiously you will be fine. But you don't have to boost it to have it kick some booty.

 

Cool thanks, Eagle1

 

Being a previous owner of greddy kit says it all! Spend extra money on a better kit, single or twin.

 

Dude do you work for one of Greddy's competitor. You have posted the same thing word for word in like 4 different threads.

 

Aahah!........+1 very true.