2JZGTE or RB26DETT? Which is better?

2JZGTE or RB26DETT? Which is better?

I think any RB series motor in a 240SX is sexier than a 2JZGTE in either an SC300 or an IS300.
Apparently RB's are capable of more max power (~2000hp) but are only good for one or two 1/4 mile runs before they need serious work. The 2JZ maxes out at around 1600hp but is far more reliable and consistent.


Discuss.

Can I make this a poll? Help me out mods...

ummm I dk man but I'd put my trust on the 2JZ though, they show to be the best when it comes to high power outputs and what not, that's just me though

If just comparing the engines alone - both are pretty decent engines. Both are great engines to mod - huge aftermarket support for both, and both share a certain degree of being awesome engines that can make for some surprising numbers. Which is better ?? - depends on what you want - straight line drag, road course, daily driver, etc.

Let's look at some PROS (stock engines - published numbers)

RB26DETT - rev happy motor, power peak at 8500RPM (over square design = larger bore than stroke). From the factory - they really optimized the turbo choices, properly sized for the exhaust. Great racing heritage - some will say that the RB26DETT is a "true" race motor, while the 2JZGTE is a production piece.

2JZGTE - longer stroke and 400cc bigger displacement makes it the torque King compared to the RB motor. Power peak at 5500 RPMs - huge power gains with minimal modifications of the bottom end (well known "bulletproof" reputation).


Some of the CONS (stock engines - published numbers)

RB26DETT - Torque runs around 368Nm at 4400RPM to the 2JZGTE torque numbers of 420NM at 3600RPM (non-VVT-i) and 451Nm at 3600RPM (with VVT-i). When you ask NISMO what they do to a RB26DETT to get it above 600HP+, they make serious bottome end changes to survive the added stress. Toyota's 2JZGTE is stronger on the bottom (larger displacement as well) - many make NO modifications to the bottom when they switch to a larger single turbo to replace the undersized factory turbos for power ranges in the 600-750HP range. From the drag strip, durability point of view - super easy to launch a Supra (rev to 3500RPM or so, drop the clutch and you can make repeated passes with good repeatability). For the Skyline - have to sidestep the clutch at 8000RPM or so to get a decent launch (rev too low and you bog, rev to high and you burn up the wheels - either one will have a detrimental effect on the the clutch and drivetrain.)

2JZGTE - not so much with the engine as the drivetrain. Four driven wheels are better than two for traction in most situations. The reason why the Skylines spank the Supras (Stock for Stock) on the drag strip - from published times of averaged high 1/4 times of 13.0 for Skylines and 13.7 for Supras.

As for "sexyness" - hard to say - both being great motors and similar in basic design (Inline-6, factory turbo(s), 24-valves, legacy reputation, etc.) Personally, I find the profile of the 240SX more agreeable than the SC300 or IS300. But I find the Toyota engine superior to the Nissan one (torque wins in most cases, don't want to rebuild motors between runs). If I had the money - I'd get both.

well are we talking stock power or completely modded out power, because i know the rb26dett turbos are well known for crapping out for no reason at all. And is there a reason why your going with a single turbo 2jz or is that just what you put in the title, are we workin with the craziest of crazy mods for both motors? It would also seem that that 2jz would be an easier fit into an engine bay then the rb.

but keep in mind anything i say is coming straight to you via a biased opinion.

I'm talking in all variations. The more realiztic situation is a lightly moded motor -- BPU for both the 2JZ and RB, if you will. I think in that form, the 2JZ may make more power, but I'm not entirely sure.

The 2JZGTE was hand-forged by god himself. Didn't you know that?

Seriously though, I like the 2J

You say the RB26 turbos crap out? So do the 2JZ stock units. Pretty much anyone running more than BPU power levels has a Single (or the rediculously expensive HKS Twins) The Stock twins just arent efficient above 19lbs of boost or so. And if you've got a 1ZJ or a JDM 2JZ those stock twins use ceramic not steel housings and turbines and can't handle nearly as much boost. I dont know if either are really easy fits into most engine bays though, given their inline configuration.

The stock turbos are the main "problem" on the 2JZ. Anything more than a few BPU mods and its time to ditch the twins. Luckily there are a whole TON of single turbos out now that offer rediculous power levels without significant lag, especially with the advent of dual ball bearing turbos. And of course if you really want instant torque and better spool you can be like Ryan Woon, Ken Henderson and all those big shots and get an HKS 3.4L stroker kit (or a JUN, but those are more money and of lesser quality)

well, im all about eh 2jz too, but the VG30DETT is a sexy motor too, my friends motor is pretty much bullet proof

Bulletproof?! HAHA that thing doesnt even come close if you throw the RB or any Toyota JZ series motor in the discussion.

me personally, I'd take the 2jz. yes the 2jz-ge motor came in the is300's, but was the vvt-i model head. can be easily turned into a 2jz-gte. if you want to compare conversion to conversion, let me ask you what would be better. a s13 model 240sx with a rb26 or a mk3 supra with a 2jz? my personal opinion, I'd take the 2jz in a mk3. 240's are way too common and that conversion has been done many times. as the 2jz in the mk3 I've only seen it done once, and it was still in the progress of being installed. motor vs motor, I think both are great platforms both capable of handling high hp numbers. both have their handicaps as most motors do. so what it really comes down to is what is your preferrence. I'll take the 2jz over the rb26. although if I had the choice, I'd take both a 1jz and a 2jz and create a 1.5jz (to those that may question it, yes it does exist and it's a beastly motor)

^ Yeah the 1JZ is one helluva motor too.