why is it if the vg and rb and 2j are all forged and all built to hold extreme power, why does the 2j and rb outperform the vg when fully blown.. the fastest 300zx in the world runs like. 9? the fastest supra 6 speed does 8.6, and the fastest auto is in the 6's. rb its about 8.

there is a lot more to drag strip racing then just the power of your motor. all three motors are solid and can handle a lot of power.. and I'd say the vg has the most aftermarket performance upgrade support of the three. take the three cars to the track and it would probably be a little different story

no like the highest horsepower vg is probably right around 1k. the highest 2j?! around 2k! same with the rb! i mean im guessing because you can strap a huge single on the rb or 2j and its not as easy with the v6 of the vg..?

2nd the speed land record is actually a Z.... I think it did something as 419km/h (260mph) the one on bonneville speed trial?

there has been a couple of L28's to run 9's

2jz and rb dynos their high horsepower numbers at 7500rpm and beyond. Its too high in the power band and most likely wouldn't be used.

miilano being that you have both a supra tt and a 300zxtt mind sharing some of the pros and cons of each and which you prefer? thanks man

MiiLaNo wrote:

2nd the speed land record is actually a Z.... I think it did something as 419km/h (260mph) the one on bonneville speed trial?

It was a JUN built VG30DETT and the record still holds. http://www.junauto.co.jp/democar/index.html?en

As for power sure the RB & JZ can go up to 2k hp but they arent as stable as the VG. ie the VG is the only one without any harmonic damping issue.

aidanair wrote:why is it if the vg and rb and 2j are all forged and all built to hold extreme power, why does the 2j and rb outperform the vg when fully blown.. the fastest 300zx in the world runs like. 9? the fastest supra 6 speed does 8.6, and the fastest auto is in the 6's. rb its about 8.

yo,seen escort racings z32 i think its in the 7's not sure but theres a holden in ozzy thats vg powerd and its in the 8's(street legal). its not so much the motor but the chassis.if a top american builder puts one together its gonna be fast no matter what engine it has.the reason the inlines perform better is the high mounts.there are mor 1000hp vg's around than 1000hp low mount turbo rb's and 2j's if any.

aidanair wrote:miilano being that you have both a supra tt and a 300zxtt mind sharing some of the pros and cons of each and which you prefer? thanks man

well as far as speed, my supra was faster, however thats only because I had it modified and my Z wasnt, although since my Z was stock it actually did very well against the supra. of the line, they were fairly even until hit third the supras rear is in my face however stock turbos on both and same stage of upgrades, I like the Z better since its turbos are not sequential and boost instead at the same time, but they actually both were equally good, although the Z handled much better IMO.

And to be honest I got a lot more respect in the supra, but that was because its a supra and its recognized for its image. however the Z is not as known to the suckas in their own import world and its different, it does get underestimated and mistaken by cars such as lambos, thats why I choose the z over my supra!

I can post pics of it and the whole engine swap tomorrow... right now its bed time! gotta be at work at 5am... and its 2:40 right now haha

I6 vs V6...

this thread is kindof retarded as you can't really compare the two types. RB and 2JZ stand head to head but not the VG. In my experience the 2JZ is a good engine and so is the RB but stock for stock they don't touch the VG. Even take all 3 at 800hp (will require a huge single-turbo on the RB and 2JZ) and look at the power delivery and you'll see why.

There was a Z32 drag car that was in the low 7's and they were expecting 6's but sadly crashed the car before they got to that point and dropped that project.

As far as which engine to go with... depends on what you want. I'd take the VG and 2JZ over the RB any day... the RB is so over rated that its just down right silly (not that it can't make power, because it can, but simply because I don't believe it comes close to the VG and 2JZ). From there, between the 2JZ and VG it would just depend on what type of racing I'd plan on doing. Any sort of racing that requires handling I'd go with the VG because it will be lower and shorter than the I6, lowering your center of gravity and moving weight to the middle of the car.

Drag racing... that's definitely a tough one as both engines can easily be built to perform equally as well. The most important thing though... it just comes down to money. If you have enough money you can make nearly any engine make a ton of power. If I had to choose between the 2JZ and VG for drag racing... the Nissan enthusiast in me would go for the VG but if I just so happened to get a 2JZ or were given one I definitely would not turn down the opportunity to use it.

aidanair wrote:why is it if the vg and rb and 2j are all forged and all built to hold extreme power, why does the 2j and rb outperform the vg when fully blown.. the fastest 300zx in the world runs like. 9? the fastest supra 6 speed does 8.6, and the fastest auto is in the 6's. rb its about 8.

since when was the vg forged from the factory? NEVER! stock pistons are cast. Not to mention another reason the vg wont ever make as much power as them is on the head(s). CFM flow for all motors, vg is by far the smallest. Motor wasnt built for high rpm and huge turbos, more for mid range turbos with low end grunt. RB was designed for higher rpm usage, and ports are more designed for high rpm racing.

Also, Being able to top mount a turbo, or move to a place to mount a big single is easier with a rb/2j.

mtcookson wrote:Drag racing... that's definitely a tough one as both engines can easily be built to perform equally as well. The most important thing though... it just comes down to money. If you have enough money you can make nearly any engine make a ton of power. If I had to choose between the 2JZ and VG for drag racing... the Nissan enthusiast in me would go for the VG but if I just so happened to get a 2JZ or were given one I definitely would not turn down the opportunity to use it.

I'm not sure what you're trying to compare here exactly. If you're looking at a 800hp VG vs a 800hp 2JZ I guess what you're saying makes sense, but the VG is going to be nearly maxed out on it's build. 2JZ's are hitting 1200rwhp+ all day long while we have like 2 VG30 Z32's pushing 1,000.

Anyway, this question has been on my mind a lot lately. Don't get me wrong, I love the VG30. It sounds beautiful at WOT, pulls great, and responds well to modifications. It is a pain in the *** though. Nothing is easy to work on, it's jammed in the engine bay, you can barely see anything under the plenum... it's ridiculous. I spun a rod in my last one, my current one has the most annoying VTC knock ever... God I hate this engine sometimes.

I recently went to TX2K8 (big Supra meet in Houston) with a buddy of mine and ever since he has been trying to talk me into a 2JZ car. I'm not a big Supra fan (or a fan of spending $40,000 on one) and the SC300 just couldn't replace my Z. An IS300 would be nice, but I already have an IS250 so that would be kind of stupid. It did make me question the VG30 though. My main complaint is the lack of space to work with. I understand that any high hp engine is going to have problems, especially when you run the hell out of it like I do... but when I have a problem I want to be able to get in there and fix it quickly and easily. Let's face it, the easy way to replace the water pump on the VG30 is to unbolt the engine mounts and jack it up.

Anyway, I am currently looking into an RB26. There are definitely things I would miss about the VG, it is a very streetable engine... but God, what a pain in the ***. Then again, the RB swap itself would be a pain in the ***, but it may pay off in the end.

movin_up wrote:I'm not sure what you're trying to compare here exactly. If you're looking at a 800hp VG vs a 800hp 2JZ I guess what you're saying makes sense, but the VG is going to be nearly maxed out on it's build. 2JZ's are hitting 1200rwhp+ all day long while we have like 2 VG30 Z32's pushing 1,000.

Maxed? Hardly. You aren't going to touch low, low 7 second 1/4 mile runs with 1,000 hp. I know for sure Jorge Lazcano was making more than 1,000 hp to make a 7.09 second pass. That's why I said its all about money... they definitely had a ton of money in that car just like you would have in a 1200+ whp 2JZ.

I'm not saying the 2JZ is a bad engine, not by any means. They are proven over, and over, and over again to be a monster of an engine and I believe are much better engines than the RB26 when power potential is of concern.

In the end... if I were to build up a drag car like that, I'd personally use the VH45 instead.

mtcookson wrote:
Maxed? Hardly. You aren't going to touch low, low 7 second 1/4 mile runs with 1,000 hp. I know for sure Jorge Lazcano was making more than 1,000 hp to make a 7.09 second pass. That's why I said its all about money... they definitely had a ton of money in that car just like you would have in a 1200+ whp 2JZ.

I'm not saying the 2JZ is a bad engine, not by any means. They are proven over, and over, and over again to be a monster of an engine and I believe are much better engines than the RB26 when power potential is of concern.

In the end... if I were to build up a drag car like that, I'd personally use the VH45 instead.

Maxed out wasn't what I was looking for but I was typing that quickly on my phone, lol. My points was, you generally don't see a Z32 making more than 800 wheel that's not owned by a race team or Z1 Motorsports. I'm not saying there's not others out there and I think I have actually heard of another, but Russell's car is the only street driven 1,000+ car that I know of. The rest are running $12,000 stroker kits being trailered to the track.

A question I find myself asking though is, doesn any of this mean anything? I mean it's awesome feeling 1,200hp throw you back in your seat, but if I had anything over 800 I would have to buy another car to hit the twisty's with. I'd love to have the power, but that's the choice right there and I'm not willing to sacrifice the enjoyment of hammering out of a corner.

So my dilemma is, looking for 600rwhp is it really worth it to go RB? The VG30 can easily handle it, but there is no denying that fact that these things just like to be difficult. And the space savings.... I would love to be able to actually reach something underneath my plenum.

Definitely... cornering is where its at. If cornering capability is what you're looking for I'd personally stay with the VG... or... maybe... try out a VQ swap. Still great potential, especially if you use the 3.5 for the extra displacement. The real benefit though... it will be quite a bit lighter potentially helping out cornering capability much more. That's what was done to the JGTC R34 Skyline... they dropped the RB26 in favor of the VQ30 (can't remember if they ran a single or twin turbo setup... twins I believe). The VQ was so much lighter and compact that it greatly improved the handling characteristics of the car making it faster than the RB26 equipped R34.

mtcookson wrote:Definitely... cornering is where its at. If cornering capability is what you're looking for I'd personally stay with the VG... or... maybe... try out a VQ swap. Still great potential, especially if you use the 3.5 for the extra displacement. The real benefit though... it will be quite a bit lighter potentially helping out cornering capability much more. That's what was done to the JGTC R34 Skyline... they dropped the RB26 in favor of the VQ30 (can't remember if they ran a single or twin turbo setup... twins I believe). The VQ was so much lighter and compact that it greatly improved the handling characteristics of the car making it faster than the RB26 equipped R34.

The VQ is definitely still up for consideration, but I don't really know much about it and I'm currently stuck on the idea of how easy the RB would be to work on.