4.5 liter swap
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Joined: Jul 2003
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From: CORONA, CALIFORNIA
Originally Posted by ZRAYGO
WOW!
But anyway....With the money and such that would go into a M45 V-8 motor swap into a Z, why not just get the 4.3 Stroker kit for the VQ35. I'm not knocking the idea of the V8, it jsut seems less efficient.
~Murph
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Joined: Nov 2003
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From: Herndon, VA
The VQ35 motor is still a relatively new engine, as well as a VK45. The Top Secret's GT-R 35C was a unique undertaking but the VK45 has been around longer than a VQ35. If you are just looking for V-8 power than the VK is better. However, if you are looking for overall reliability for massive HP than I say go with a RB26DETT.
Better yet, why don't you just throw in a V-10 or V-12; oh wait a minute, Nissan doesn't support those engine platforms yet.
Better yet, why don't you just throw in a V-10 or V-12; oh wait a minute, Nissan doesn't support those engine platforms yet.
Originally Posted by illphil
But of course there will be the skeptics- like the people who would ruin Forsberg's threads on his sr20 swap (which is great a idea for dropping weight on a heavy car like the z). Some people are looking for different characteristics, and for those who wouldn't mind staying NA with great tq to begin with (ie auto-x'ers) this may be something fun and custom to run with in SM or once the market expands squeezing more power out of it and being powerful at near stock reliability.
Hey everybody...let's cut our displacement nearly in half so we can make the car weigh exactly the same!
Originally Posted by DragonZ
The VQ35 motor is still a relatively new engine, as well as a VK45. The Top Secret's GT-R 35C was a unique undertaking but the VK45 has been around longer than a VQ35. If you are just looking for V-8 power than the VK is better. However, if you are looking for overall reliability for massive HP than I say go with a RB26DETT.
Better yet, why don't you just throw in a V-10 or V-12; oh wait a minute, Nissan doesn't support those engine platforms yet.
Better yet, why don't you just throw in a V-10 or V-12; oh wait a minute, Nissan doesn't support those engine platforms yet.
The VQ engine has been around since 1994...but I guess that's news to you.
Originally Posted by BriGuyMax
I guess you don't realize that an IRON BLOCK SR20 weighs just as much as the ALUMINUM BLOCK VQ35.
Hey everybody...let's cut our displacement nearly in half so we can make the car weigh exactly the same!
Hey everybody...let's cut our displacement nearly in half so we can make the car weigh exactly the same!
Yeah so that must be why he got his car down to 2600-2700 lbs? And qouted saving 200-300 pounds from the swap alone. Even if the block is close to weighing the same (which I wouldn't believe), we still have the 6 speed weight. I realize we are going off people's word, but why exaggerate and why would companies follow suit. So along with the weight savings, you get to position the engine farther back and lower achieving better handling. Same goes for the Top Secret Rb26 Z33's. They may be around the same weight or slightly more than the VQ but being able to position the motor for better handling and those cars have been successful in competition. Just my .02, and being open minded to new ideas.
Originally Posted by illphil
Yeah so that must be why he got his car down to 2600-2700 lbs? And qouted saving 200-300 pounds from the swap alone. Even if the block is close to weighing the same (which I wouldn't believe), we still have the 6 speed weight. I realize we are going off people's word, but why exaggerate and why would companies follow suit. So along with the weight savings, you get to position the engine farther back and lower achieving better handling. Same goes for the Top Secret Rb26 Z33's. They may be around the same weight or slightly more than the VQ but being able to position the motor for better handling and those cars have been successful in competition. Just my .02, and being open minded to new ideas.
As for having the motor lower...yes it might be, but honestly...are YOU planning on doing a motor swap in a 350Z??? If not, then WTF are you sitting here talking about how easy and great it would be for????
Originally Posted by BriGuyMax
I guess you don't realize that an IRON BLOCK SR20 weighs just as much as the ALUMINUM BLOCK VQ35.
Hey everybody...let's cut our displacement nearly in half so we can make the car weigh exactly the same!
Hey everybody...let's cut our displacement nearly in half so we can make the car weigh exactly the same!
Originally Posted by BriGuyMax
I'm sorry...but shaving 400-500lbs (stock Z's weight AT LEAST 3100lbs) simply does NOT happen with just a motor swap. A significant amount of other things had to be removed. Furthermore, you obvisouly have no idea what you're talking about if you think that the 6-speed trans in the Z is "heavy". I was able to pick it up by myself while LAYING DOWN next to it under the car and put it back on the motor when I did my clutch/flyhweel swap without much trouble at all. I would estimate the 6-speed at weighing in around 70lbs...which is probably not much more, if any than a 5-speed SR20 trans.
As for having the motor lower...yes it might be, but honestly...are YOU planning on doing a motor swap in a 350Z??? If not, then WTF are you sitting here talking about how easy and great it would be for????
As for having the motor lower...yes it might be, but honestly...are YOU planning on doing a motor swap in a 350Z??? If not, then WTF are you sitting here talking about how easy and great it would be for????
The whole point of everything I have been saying is that a LOT of people are so narrow minded and stuck on whats stock and not willing to accept that sometimes with some work a better balanced, lighter- or powerful car can be achieved with reliability or overall built functionally as a racecar. Don't get me wrong the VQ is a great motor to start with, but hopefully by now you see what I'm saying.
Originally Posted by illphil
Yes I didn't say he shaved off 400-500 with just the swap. I said he qouted 200-300lbs from the swap. And actually yes, I would consider doing a swap or something crazy custom since you ask. The only downside I see about the car is the weight. I don't want to argue the weight difference because I am going off qouted weights and I myself haven't pulled a VQ only an SR20.
The whole point of everything I have been saying is that a LOT of people are so narrow minded and stuck on whats stock and not willing to accept that sometimes with some work a better balanced, lighter- or powerful car can be achieved with reliability or overall built functionally as a racecar. Don't get me wrong the VQ is a great motor to start with, but hopefully by now you see what I'm saying.
The whole point of everything I have been saying is that a LOT of people are so narrow minded and stuck on whats stock and not willing to accept that sometimes with some work a better balanced, lighter- or powerful car can be achieved with reliability or overall built functionally as a racecar. Don't get me wrong the VQ is a great motor to start with, but hopefully by now you see what I'm saying.
I definitely see what you're saying, but the original topic of this thread was about putting a slighly heavier upsupported V8 into the Z...hardly make any sense balance, weight or moddability wise.
Well I DO know nothing about engines and less!
My last car was a VW Golf GTi VR6 and while that engine was great for pep, the 9 million pounds it added to the front of the car was horrible. The tires always looked like they were flat and in fact I blew 2 tires in as many months before I found a tire that could handle the weight.
With that horrible experience in mind I would never replace my 350's engine with a bigger, heavier engine. But that's just my totally uninformed 2 cents worth.
My last car was a VW Golf GTi VR6 and while that engine was great for pep, the 9 million pounds it added to the front of the car was horrible. The tires always looked like they were flat and in fact I blew 2 tires in as many months before I found a tire that could handle the weight.
With that horrible experience in mind I would never replace my 350's engine with a bigger, heavier engine. But that's just my totally uninformed 2 cents worth.
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Joined: Nov 2003
Posts: 76
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From: Herndon, VA
Originally Posted by BriGuyMax
The VQ engine has been around since 1994...but I guess that's news to you.
The VQ engine has been around but there is a big difference in a VQ30 set-up and a VQ35 set-up. Thanks for clarifying that.
Originally Posted by DragonZ
The VQ engine has been around but there is a big difference in a VQ30 set-up and a VQ35 set-up. Thanks for clarifying that.
There have been a couple threads on the swap capability of the vq40, yet no definitive answers. What I'd like to know about the vq40 are bore, stroke and deck height which would let you know if you can just swap internals with the vq35. Also duration and lift of the cams would be nice. Anyone have the factory service manual of the new pathfinder or know someone who does?
