Im coming from a boosted IS300 to a G35 myself. I love the IS300 dont get me wrong i just want a change of scenery with my daily driver car. Although reading boosted stories about 350's and G's it doesnt seem like they take boost too well on stock internals so i gotta go rethink my decision.

 

Well I'll give you a definite answer in a few thousand miles from now but I just rebuilt my motor and threw in forged internals with a compression drop and I can tell you that this motor feels sooooooo smooth and takes the boost beautifully. It screams at only 7 an1/2 psi right now (break-in) and soon I will be boostin 12psi.

As of right now with the stock greddy fuel map it is making 371whp @ 7.5 psi!!! and this is only the beginning.

Do not think you can go turbo and not need to forge your internals. You will soon find out the motor won't take it. I blew mine up @ 8psi the 1st time around.

 

by the way for 97supra the 2jz motor has and has ALWAYS had competition to the nissan skyline motor, that motor is ALSO built for boost. That motor can handle ALOT of power, on stock block, believe me I have seen it. So dont say that the 2jz is untouched lol b/c it is certainly not.

 

my friend just boosted his auto is300...... dont mean to offend anyone but that thing is pretty slow... at 10 psi he is making about 340 and at 15 psi he is making 411, he has upgraded his tranny with a tq converter, valve body and sprag upgrade... he has the turboeast kit... He ran a measely 13.4 at 103 but it was on street tires and his best trap was 108 at 13.6. Now for the amount of money he threw in for everything, I truely believe it wasn't all worth it... just my opinion

 

If those are his times he sucks at driving. I ran a 13.11 in my IS300 on a 100 shot of nitrous. which is about 300rwhp. I ran 12.85 with my toyomoto supercharger kit which was about 340rwhp.
Most people in the IS community hittin around 400rwhp are running low 12's. The Is on top of that is really a street car from a start they are a dog but from 50+ hold on cause they will haul ***.

In conclusion of whereever i was headed with that your buddy just sucks at driving.

 

Its been a while since I updated everyone as to what we're doing.

Graphite gray IS is getting a single turbo setup, went with an AEM standalone, got a seibon hood, c-wings front bumper, paintjob tuchup by Samuel's Auto, Mitsubishi EVO recaros,

I'm getting an AAM spec ecu flash to accomodate a new set of 750cc injectors I bought, bought a seibon hood, top secret locking hood pins, greddy gracer kit, sparco milano alcantara seats, black factory dash to go with the rest of my interior swap, Bridgestone Potenza RE050a 305/30r19, HKS DLI, wing, custom leather and suede interior by Universal Auto Upholstry...

Come check me out at the National Guard booth @ Hot Import Nights Miami

Heres a pic of the new interior:

 

Reading this thread is giving me a headache. Everyone is defending their motor, and it's turning into a fanboy thing.

Heres my verdict:

The VQ35DE is a wonderful engine. It Stomps the NA 2JZ. That being said, the supra motor 2JZ-GTE is a solid bottom end, and it shares that bottom end with the 2JZ from the IS300. I know a guy in atlanta with an IS 300 who is putting pown 600+ rwhp with a stock block (this was on 16 lbs of boost). He's about to go up to 24 lbs, aiming at the 800 rwhp mark. (granted, the lag is rediculous, and he's got SERIOUS traction issues, but it is a beast.)

The VQ35DE was designed as an NA motor, and from what I've seen and head, it handles FI very well. But after about 700 whp, the VE goes wayyyyy downhill. The motor just cant breath at these levels. The new intake manifolds on the 07 should solve this, and a little bird told me that there are a few shops working on their own. With a proper build (and some re-engineering) the VQ is capable of similar power levels to the 2JZ-GTE, but not on a stock block. Cast Iron is stronger than aluminum. Duhhhh.

 

Stock block, the 2jz-gte is bulletproof. But if you build both motors, the 2jz-gte will still come out on top mainly because of the inline 6 efficiency. The VQ would have to be sleeved and built to handle anything over 600whp.

Usually the supras that run over 1100whp are stroked, the stock stroke 3.0's are under 1100whp. So, in turn if you have a stroker kit on the VQ you will create much more power than the 2jz.

 

Incorrect(when it comes to sleeves). The stock VQ is not a Honda, though to make over 600whp it does have to built, it needs no sleeves. Extra protection sure. But not mandatory. And yes I do have first hand experience.

 

Thats the whole point, if catastrophic failure occurs past that hp, most likely the block will have something go through it.

Never said its necessary, but to compete with those supras you might as well.

 

well this post has nothing to do with a 2jz vs. a VQ but I just got my JDM steering wheel today. It just looks like a stock wheel with a jdm airbag but its actually the whole thing. Originally it didn't come with the volume or cruise controls, intead it had two plastic trims to cover them up. So I transfered them but on second thought I'm gonna put the jdm covers and rock it basic.



Here's a pic of my new 2004 updated center console =)

 

I remember the supra turbo around the time it came out.. it wasn't even popular and nobody bought it cuz of the hefty price tag. The engine's hidden power wasn't discovered overnight. It was faaaar slower process than what people think. It wasn't until several years later that the 2jz, slowly, became a montster, power house. VQ evolved more rapidly, becuase of it's popularity and the sheer brut force of the aftermarket. VQ is still in at its infancy and when the skyline comes out and it starts maturing, It'll be a ruthless monster at it's built form.

 

To all the people that have followed this thread from the start:
this battle is still ongoing. We have the gold is300 fully built now (or so he says) and single turbo. He's waiting to get tuned this week and in the mean time trying to break in the motor and fix a few kinks while he's at it. The graphite gray is300 is single turbo as well and fully built (confirmed). He's also breaking in his new build and waiting to get tuned. Me on the other hand am swapping to a VH45DE and turboing that. If you want to check the progress of my build please check out my thread on it. I would put the link but I'm on an iPhone and it won't let me copy links.

 

This is one long battle. Kinda cool its still going though.

 

As a former turbo'd IS300 owner I'd say it'd be very close! Again it all has to do with his setup, without the proper tranny his car will be crap. Id almost say he'd be better off building the stock motor up and putting a massive turbo setup on it. For all those who think the G will take it, beware, a turbo IS is nothing to take lightly.

 

A setup like the one menitoned above cost approx 6-7 thousand, mainly because of install cost for the setup and tranny upgrades. The IS doesn't have companies like Greddy making turbo kits, smaller companies do their own R&D which ends up costing the customer more. Chances are the above car had stock internals, had the motor been built and the owner opted for a larger turbo, those number could have easily doubled.

 

oh no, these IS300's have way more than that in them. They both have 2JZ-GTE swaps, built, V160 6-speed tranny's, standalone, etc... Their issue will be putting the power to the ground.

 

here's the link to my VH45 G project:

https://my350z.com/forum/g35-g37/301119-project-built-vh45de-tt-on-a-g-coupe.html

 

All of this turbo talk is a little too complicated for me, with that said, I think the G/Z looks a lot better then the out dated 4th gen Supras even though I love that car to death. Anyone wanna prove me wrong?

 

I'll try!

Have you seen the Top Secret Final Evolution body kit for the Supra yet? It was love and lust at first sight for me!!! (Just like the first time I saw the G35 coupe)