Rb26 swap info
02-24-2005, 12:32 PM
#21
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Originally posted by Zexy
I hope Aznricerocket has some big pocket.
I hope Aznricerocket has some big pocket.
lol... informative response. i do have a big enough pocket though, paid for my g35 cash 2 years ago. and damn straight i'm enjoying my rice rocket.
-phil
02-25-2005, 12:46 PM
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If we only had confirmation that they are using a VQ35DE...then i'm sure some people would wait.
BTW, I doubt you'll be able to do it for the same price or cheaper as a regular turbo kit.
BTW, I doubt you'll be able to do it for the same price or cheaper as a regular turbo kit.
03-18-2005, 09:34 AM
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sorry to bring this thread back from the dead but just incase people didnt know, the RB26DETT is not what its cracked up to be. People think that just because its in a the GTR's that its the all high and mighty god of engines. What the factory nissan race teams for the JCGT junked the rb26 and replaced them with the VQ35DE. And before that it was the old VG30DE(TT)'s out of the old 300z's.
03-18-2005, 10:59 AM
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Originally Posted by Soul Assassin
sorry to bring this thread back from the dead but just incase people didnt know, the RB26DETT is not what its cracked up to be. People think that just because its in a the GTR's that its the all high and mighty god of engines. What the factory nissan race teams for the JCGT junked the rb26 and replaced them with the VQ35DE. And before that it was the old VG30DE(TT)'s out of the old 300z's.
03-20-2005, 01:06 PM
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http://supergt.net/supergt/2005/05r01/0501entry_en.shtm
they all run vq30dett's in the gt500. the rb was never run for regulation reasons.
phil
they all run vq30dett's in the gt500. the rb was never run for regulation reasons.
phil
03-20-2005, 01:51 PM
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resding this thread makes me realize how much keeping this car N/A makes sense. N/A is the way to go. You may never break 500 whp records with it...but at least you'll be able to hang with bigger boys and their toys.
03-30-2005, 02:55 PM
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Heads up guys
Okay I was in the local drug store and looked at new magazines they have on sale. Well Modified Magazine has a story about Top Secret new D1 Drift car. Guess what it is...yep you guessed it a 350z with a RB26DETT swap. I read the artical and Smokey the head cheese at Top Secret even says they junked the VQ35DE because of Relieablity issues. He also said that when putting the RB in there it made a better weigt distribution because he could sit it really far back in the engine bay and it actually sat lower then the VQ. Weight distribution was like 56/44 which to him is ideal for a drift racer. It shows quite a bit of photo's and a really nice one of the engine bay. I have to say it looks very pretty in there 
.
I was also thinking about this swap....Has anyone finished one yet? The fab work is the only thing I am worried about.
.I was also thinking about this swap....Has anyone finished one yet? The fab work is the only thing I am worried about.
03-30-2005, 03:02 PM
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Heh...just because Top Secret doesn't want to bother testing the VQ35DE out to see it's potential...if they don't want to that's fine, but they need to swap passing it off as the VQ35DE not being any good.
03-31-2005, 05:26 PM
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AznIceRkt,
The reason NISMO did not run the RB26 in the Skyline in 2003 Skyline and the 2004 350Z is because the VQ is shorter in height and smaller in lenght than the RB26 so the could move the engine further back and lower in the chassis. Has nothing to do with regulations, the regulations in JGTC allow a manufacture to use ANY engine in their model line in ANY chassis, that is why the Supras ran with the Four cylinder Turbos for a number of years then were able to switch to the N/A V8.
Top Secret saying the VQ was unreliable and that they could move the RB26 further back in the chassis is just plain BS. Top Secret is known for their engine swaps, I am sure they put in the RB26 just to be different. Smokey saying the VQ was unreliable just pegs the BS meter. The VQ has been successfully raced in VQ30Dett form in the IMSA 300ZX for a number of years and the new VQ35 has been racing successfully in JGTC in the GT300 class and in the Super Taikyu Enduro Series in Japan, and in GrandAm Cup in the US and the motor has proven to make good power and be reliable.
The reason NISMO did not run the RB26 in the Skyline in 2003 Skyline and the 2004 350Z is because the VQ is shorter in height and smaller in lenght than the RB26 so the could move the engine further back and lower in the chassis. Has nothing to do with regulations, the regulations in JGTC allow a manufacture to use ANY engine in their model line in ANY chassis, that is why the Supras ran with the Four cylinder Turbos for a number of years then were able to switch to the N/A V8.
Top Secret saying the VQ was unreliable and that they could move the RB26 further back in the chassis is just plain BS. Top Secret is known for their engine swaps, I am sure they put in the RB26 just to be different. Smokey saying the VQ was unreliable just pegs the BS meter. The VQ has been successfully raced in VQ30Dett form in the IMSA 300ZX for a number of years and the new VQ35 has been racing successfully in JGTC in the GT300 class and in the Super Taikyu Enduro Series in Japan, and in GrandAm Cup in the US and the motor has proven to make good power and be reliable.
03-31-2005, 09:56 PM
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What about the fact that the RB26 is a proven motor and has parts readily available now. To do whatever they pretty much want. I think the overall point of Smokey going with the RB was reliablility at this time. Parts are available for the VQ35DE but not as much or as potent as for the RB26. Expecially if you are making a drift car thats probably going to be in high RPM for long periods as well as pegging off the redline.
http://www.modified.com/modifiedmag/...agpreview.html
Also Check the Mag before you pass judgement I thought the article was pretty good.
http://www.modified.com/modifiedmag/...agpreview.html
Also Check the Mag before you pass judgement I thought the article was pretty good.
Last edited by Zlife-000; 03-31-2005 at 10:03 PM.
04-01-2005, 06:19 AM
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I have seen the magazine article in question. No doubt the RB26 has been well developed but so has the VQ motor. Running a motor at high RPM in drifting sounds real similar to running a motor at high RPM in Road Racing where the VQ has proven to be very reliable. The point I was trying to make was the that Smokey's rationale for installing the RB26 into the 350Z did not make any sense, the VQ is reliable and a smaller overall package.
05-17-2006, 07:36 AM
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Originally Posted by AznIceRckt
I mean, theoretically, say I threw a rod or cracked a piston or something, or completely toasted the block, that would be an expensive repair, or replacement.
The thing actually drawing me away from the RB right now is weight distribution. The FM is nice, keeping the engine back in the engine bay. The RB should be more stretched out, skewing the weight over the axle like a normal front-engine rear-drive car.
I need to do some weight researches. Anyone know the VQ long-block weight?
-phil
The thing actually drawing me away from the RB right now is weight distribution. The FM is nice, keeping the engine back in the engine bay. The RB should be more stretched out, skewing the weight over the axle like a normal front-engine rear-drive car.
I need to do some weight researches. Anyone know the VQ long-block weight?
-phil
I just weighted my complete VQ35 on a bathroom scale. The only thing missing is the intake manifold. It weights 260 lbs. Hell me and my 135 lbs bro lifted the whole thing off the back of a pick up and carried it in in the garage.
The RB26 is at least twice that, not to mention that the VQ is a compact 2 foot cube while the RB is a long, stretched out straight six. Weight distribution would suffer a ton.
You want boost cheap and bang-off-the-rev-limiter reliable? Then pick up a VQ30DET. No headaches and fabrication. And it's just as light as the VQ35, not to mention having the same block with thicker cylinder walls and a shorter stroke. Hell krismax on maxima.org reved his stock VQ30 to 8000 rpm for about a year and it's not even the rods that went, it's the oil pump.
It likes to rev more than the VQ35 and already has low compression and forged internals. And it bolts right up to your stock transmission.
VQ30DET ~1500$
95-98 Maxima wiring harness and ECU ~200$
A good intercooler
The turbo kit of your choice
E-manage Ultimate w/harness ~550$
And you're in...
You'll even have a cable-throttle conversion if you buy a 3.5 Pathfinder throttle body for ~100$. The maxima ECU is a lot simpler than the Z ecu and is made to work with a simple cable throttle body.
I'm really surprised nobody has done this yet...
Last edited by JClaw; 05-17-2006 at 07:49 AM.
05-17-2006, 10:21 AM
#34
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Originally Posted by JClaw
The RB26 is way WAY heavier than the VQ35.
I just weighted my complete VQ35 on a bathroom scale. The only thing missing is the intake manifold. It weights 260 lbs. Hell me and my 135 lbs bro lifted the whole thing off the back of a pick up and carried it in in the garage.
The RB26 is at least twice that, not to mention that the VQ is a compact 2 foot cube while the RB is a long, stretched out straight six. Weight distribution would suffer a ton.
You want boost cheap and bang-off-the-rev-limiter reliable? Then pick up a VQ30DET. No headaches and fabrication. And it's just as light as the VQ35, not to mention having the same block with thicker cylinder walls and a shorter stroke. Hell krismax on maxima.org reved his stock VQ30 to 8000 rpm for about a year and it's not even the rods that went, it's the oil pump.
It likes to rev more than the VQ35 and already has low compression and forged internals. And it bolts right up to your stock transmission.
VQ30DET ~1500$
95-98 Maxima wiring harness and ECU ~200$
A good intercooler
The turbo kit of your choice
E-manage Ultimate w/harness ~550$
And you're in...
You'll even have a cable-throttle conversion if you buy a 3.5 Pathfinder throttle body for ~100$. The maxima ECU is a lot simpler than the Z ecu and is made to work with a simple cable throttle body.
I'm really surprised nobody has done this yet...
I just weighted my complete VQ35 on a bathroom scale. The only thing missing is the intake manifold. It weights 260 lbs. Hell me and my 135 lbs bro lifted the whole thing off the back of a pick up and carried it in in the garage.
The RB26 is at least twice that, not to mention that the VQ is a compact 2 foot cube while the RB is a long, stretched out straight six. Weight distribution would suffer a ton.
You want boost cheap and bang-off-the-rev-limiter reliable? Then pick up a VQ30DET. No headaches and fabrication. And it's just as light as the VQ35, not to mention having the same block with thicker cylinder walls and a shorter stroke. Hell krismax on maxima.org reved his stock VQ30 to 8000 rpm for about a year and it's not even the rods that went, it's the oil pump.
It likes to rev more than the VQ35 and already has low compression and forged internals. And it bolts right up to your stock transmission.
VQ30DET ~1500$
95-98 Maxima wiring harness and ECU ~200$
A good intercooler
The turbo kit of your choice
E-manage Ultimate w/harness ~550$
And you're in...
You'll even have a cable-throttle conversion if you buy a 3.5 Pathfinder throttle body for ~100$. The maxima ECU is a lot simpler than the Z ecu and is made to work with a simple cable throttle body.
I'm really surprised nobody has done this yet...
Plus the maxima engine bay is bigger than the 350Z, so you probbaly would have to make your own turbo kit, which aint worth it.
Last edited by sja177; 05-17-2006 at 10:24 AM.
05-17-2006, 10:51 AM
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It makes sense for Smokey to swap it because Japanese have such hard-ons for skylines. And he has plenty of experience with those engines. I saw a video where the Esprit tuners did the swap, and with the chassis of the 350z completed the lap 10 seconds (I believe) faster than the best R34.
05-17-2006, 11:58 AM
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Originally Posted by sja177
Because after all the time/money/headache.....you could have built a vq35de to be stronger, and more reliable for less money than to swap a vq30dett
Plus the maxima engine bay is bigger than the 350Z, so you probbaly would have to make your own turbo kit, which aint worth it.
Plus the maxima engine bay is bigger than the 350Z, so you probbaly would have to make your own turbo kit, which aint worth it.
Both the VQ30DET and the VQ35DE have the exact same external dimensions. Why would space be any more an issue with the 3.0 than the 3.5? Just use the off-the-shelf turbo kit of your choice.
Dropping the VQ30DET into a 350z is about as hard as dropping a VQ35 into a Z. Not to mention that the 95-98 maxima's wiring harness/ECU is way simpler than Z's electronics. It's a great way to get rid of fly-by-wire too. One less thing to worry about.
05-17-2006, 12:45 PM
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Originally Posted by JClaw
???
Both the VQ30DET and the VQ35DE have the exact same external dimensions. Why would space be any more an issue with the 3.0 than the 3.5? Just use the off-the-shelf turbo kit of your choice.
Dropping the VQ30DET into a 350z is about as hard as dropping a VQ35 into a Z. Not to mention that the 95-98 maxima's wiring harness/ECU is way simpler than Z's electronics. It's a great way to get rid of fly-by-wire too. One less thing to worry about.
Both the VQ30DET and the VQ35DE have the exact same external dimensions. Why would space be any more an issue with the 3.0 than the 3.5? Just use the off-the-shelf turbo kit of your choice.
Dropping the VQ30DET into a 350z is about as hard as dropping a VQ35 into a Z. Not to mention that the 95-98 maxima's wiring harness/ECU is way simpler than Z's electronics. It's a great way to get rid of fly-by-wire too. One less thing to worry about.
05-17-2006, 02:00 PM
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Originally Posted by sja177
You cant just buy a maxima turbo kit and expect it to fit the 350Z. Maybe it will, I dunno, but even still, I would rather have a built vq35de that can push 550whp than a vq30dett that is limited to 450whp, and it would be the same price to do both.
How would a VQ30DET be limited to 450whp? Mardi on Maxima.org went 11.56@121.6 mph with a bone stock VQ30DE. And that was with a FWD drivetrain. Imagine a DET.
05-17-2006, 04:09 PM
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Originally Posted by JClaw
Who said anything about a maxima turbo kit? Buy a 350z turbo kit and replace the VQ35 with a VQ30DET.
How would a VQ30DET be limited to 450whp? Mardi on Maxima.org went 11.56@121.6 mph with a bone stock VQ30DE. And that was with a FWD drivetrain. Imagine a DET.
How would a VQ30DET be limited to 450whp? Mardi on Maxima.org went 11.56@121.6 mph with a bone stock VQ30DE. And that was with a FWD drivetrain. Imagine a DET.
<They would cost the same>