I believe Cosworth got 438bhp ( or something like that ) out of a stroked vq with just about every goodie you can get. Let's say their engine can lay down 375whp. While very impressive...it has enough $$$ invested to probably get 600whp out of a turbo setup. Plus, at that point you'll have to live with an insanely loud car with probably a somewhat crappy idle and non existent low end torque.

 

Too be honest with you................the cost of making 350whp NA is going to be almost that of a 600+whp TT car. Can it be done.....absolutely, but there is a reason it is the path less traveled. There are also a number of people who have done full builds (NA) and made 310-320whp. You have to ask yourself if its worth it. I made 241.X whp with just a pop charger and am now at 282.5whp with my current mods. Figure from stock that is a ~45whp gain, but I have basically exhausted all mods without cracking the motor open.

 

I think the highest number on g35driver will probably be 35gsleeper's older setup he dynoed in at 330/330 with mainly a stroker kit and the normal boltons. Now he has a vortech on top of it. But for you to get 100whp it's gonna be a pretty penny.

 

An NA VQ35DE will always make peak power at around 6300rpms unless you mess with the cams, change the intake runner length, or mod the heads. No if's and's or but's on this. To really gain massive amounts of NA power (50whp+), you have to do one or both these things:

1) Increase the motor's ability to breath by increasing useable rpm
2) Increase the motor's ability to breath by an increase in displacement

Both of these options are quite pricey. To get 290whp+ on the VQ30DE on the Dynojet is going to some serious modification. I've always had a desire to make a high rev (~7800rpm power peak) VQ30DE making about 320whp. It would take at least of the following:

1) Rods, pistons, bearings, misc stuff, increase compression slightly
2) Cams
3) Some head work
4) Headers
5) Cosworth intake manifold
6) Oil pump
7) Higher capacity oil pan
8) Upgrade the radiator (increasing HP increases heat)
9) Injectors
10) Tuning

You're talking about $6K, if not more for a quality and reliable build. The biggest hurdle with making a high rev VQ35 is trying to keep the rods both very strong and light.

 

Are turbo and supercharged guys upgrading their radiators? Seems unnecessary.

 

All dynos can be secretly calibrated to read what ever the customer wants [within reason]........secret switches.
Everything depends on getting enough repeat business to make the monthly dyno bank payments.
Just think about a $100k investment plus repairs, operating, space expense and labor that requires 250>300 PAID dyno runs per year to breakeven.

 

Yes, many do and many guys that have FI and stock rads overheat.

 

We have numerous customers with Z's and G's running from 380hp to 630hp and everyone of them has the stock radiators. One of the G's is built, w/ Greddy TT's, automatic and never overheats. Even in the South Carolina summers with the AC on.
Just letting you guys know of our experiences.

 

thats what i was thinking, most stock radiators are pretty good on performance cars.

 

I believe what is much more common when stepping up in power especially with FI is oil temp overheating and not engine temp. Perhaps that is what he was getting to.

 

300hp on one machine could be 260 on another... 13.8 on one track could be 14.4 on another.

Forum racing and dyno racing are utterly pointless.