mtcookson

Prove it... I guaranty Nissan is not going to downgrade their top of the line engine. The crank is going to be forged. I'd like to see street VG's making 1000+ rwhp as well... there aren't that many out there... a handful maybe. As cool as the VG is... there surprisingly aren't that many extremely high power VG's out there. You'll find quite a few in the 500-600 hp range and from then on increasingly less. Stock vs stock, if both were boosted the VG would probably make slightly more power than the VQ before they both blew something up. Possibly a difference of 100-200 hp. When they're both built up though... the VQ will likely win, as already proven.

The turbo pictured in that Ebay auction is an HY35W. The HY's have a single chamber turbine and use the v-band clap to hold the turbine to the center section. An HX35 has a two chamber turbine and uses bolts to hold the turbine to the center section. That person listed the turbo as an HX when it is really an HY, if what he is selling is what is pictured.

Probably based on 1 hp per cubic inch (or thereabout). Not really a bad basis considering some of the more inefficient engines can produce 1 hp/ci. Most of the newer engines can pull that off quite easily and the older ones with some basic bolt-ons should be able to do it. It could probably do more though since horsepower is based on torque multiplied by rpm divided by 5252 and since it made over 800 ft. lb. of torque running compressed air... running with fuel should be much higher. Especially basically having constant maximum torque being put on the crank due to the piston always being on the outside of it. That would be one fun engine if it does run... the low end torque would be incredible... as would the torque throughout the entire rev range.

Then why exactly has the VQ35 broken the Nissan drag record previously held by the VG30DETT???? No, it is not a much weaker platform. The block itself supposedly could handle 2000 hp in its stock form. The die casting process is very strong. Put in a sleeve setup, build the hell out of it, slap on some properly sized turbos, and you'll out perform the VG as already proven. The VG block uses a sand casting process. You can have a closed deck design with that process but the only downside is for any thickness of the metal... a die cast block of the same size would be substantially stronger. And who said it has "fully cast internals"?? I'm sorry, but that's flat out hilarious. Starting sometime in the 70's the Nissan rods have always been forged. The crank is going to be forged. The only piece of cast you'll find in that thing is going to be the pistons and I guaranty its going to have a girdle. Then from there, the VQ is at the very least half as heavy as the VG not only making the car lighter overall, but improving weight distribution, which would help greatly in a track car. I was once in the belief that the VQ would be weak due to the aluminum block design... but its simply not true. Actually, now that I think of it Electromotive went to an aluminum block for its VG30ET (that made nearly 1200 hp in qualification trim) to increase its reliability. The majority of the engines these days are made of aluminum, a lot of race engines as well. This isn't your old aluminum that you'd find warped all of the time. Technology has come a long way and the aluminum these days is pretty darn good as you can tell by its heavy use in racing.

I don't see how there's a "rocking load"... if part of the engine were reciprocating I could see that being possible, but the pistons never stop. They speed up and slow down but never go in a reverse direction that would cause any sort of rocking. I'm sorry, but could you explain that rocking/inertial load a bit further? I must just not be understanding the concept. Sorry. Most road going engines probably wouldn't even be able to handle that... however, they are supposedly making a 2.4 liter "F1" version that could very likely pull that off and more without a single problem. I think most of that particular one is supposed to be made out of titanium. Have an extremely higher efficient (i.e. fuel economy), make more power for its weight, run just about any fuel you want quite easily, make a **** load more low end torque.... etc. etc. etc.

I don't believe the pistons ever truly stop... they just kind of dwell for an extended period... however... take for instance their 14 inch version. You have a bore of 3 inches, so the total circumference of the piston would be ~9.42 inches. Roughly 1/4 of the piston is connected to "crank" so roughly 2.4 inches of metal. From there the piston looks to be... I don't know, maybe 2 inches thick at the bottom at the least? That's actually quite a bit of material to hold up to the abuse. On top of that, the pistons put a good amount of leverage on the crank so that would require less stress on the pistons right there for the amount of power produced. On top of that, there are gears in there. If he actually geared it so that there was a higher torque output at the output shaft than what was being put in, that would again be less stress on the pistons than if it were a direct setup making that kind of power. Either way... if this thing works out (and no large companies put them under) this could change everything. I'm definitley going to keep an eye on this. Its definitely an awesome looking design.

crank angle sensor is located in the distributor so check the wires going to that. i know of the fuel temp sensor... but i have no idea where it is off hand. i've not been into the Z31's all that much, mostly Maximas.

Imagine the torque that thing would make... the pistons would always be putting maximum leverage on the crank on every combustion. If that thing is produced that could be amazing. I wonder what the fuel economy would be like though...

That's exactly my idea for getting some turbos in a tight space. That should work out great. Good luck with everything! I'm definitley going to keep an eye on this project.

I never got enough people until it was too late... however, there is someone making one as we speak. So far it looks great and should work great but the only downside is its being made over in the UK so there's a chance it might be a bit expensive due to the currency exchange... we'll see though. http://forums.hybridz.org/showthread.php?t=110306

If any of you read my previous post, disregard it. Looks like OS Giken makes multiplate clutches for the S130 and S30.... that might a good option for some of you guys. Expensive... yes, but compare the cost of one multiplate clutch to the numerous clutches you've had to buy from blowing them up. I'm likely going to use a Z31 version for my Maxima when I get it to that point. That would be a blast. Alright, looks like these are the models offered for the S30 and S130: TS2A - Pressed steel cover, twin plate, 184 mm TS2AD - Pressed steel cover, twin plate, 184 mm, sprung hub TS2B - Pressed steel cover, twin plate, 204 mm TS2BD - Pressed steel cover, twin plate, 204 mm, sprung hub TS3A - Pressed steel cover, triple plate, 184 mm TS3B - Pressed steel cover, triple plate, 204 mm I couldn't tell you the exact power handling numbers, but I believe the twin plate is in the 600 hp range and the triple in the 850 or higher range. Not only do you get great power handling, but they're light weight and smaller in diameter allowing the engine to rev even better, and they're still quite streetable.

This might help: http://forums.hybridz.org/showthread.php?t=106621&highlight=armada

if everything is still there, unbolt the axles first, then the driveshaft bolts, then remove the diff. this will make it a whole lot easier by keeping everything from spinning when taking the bolts/nuts off.

[off topic... sort of] Makes me wish we had usable nuclear batteries or similar... electric motors have so much torque... nearly instantaneous too. as much as i like engines... if/when a good electric source like a nuclear battery were ever produced for the public' date=' electric motors would just totally dominate the streets. Take for instance the AC Propulsion tzero... 2450 lbs. 200 hp 183 ft. lb. torque ...runs 4 second 0-60's and 13 second 1/4 miles How? It makes the 183 ft. lb. of torque from 1 (yes, that's 1) to 5,000 rpm and the 200 hp from 6,000 to 10,000 rpm. The motor itself only weighs 110 lbs... imagine having some sort of long lasting power source that was equally as light (i know for sure a nuclear batter has the long lasting part)....... run one motor per wheel... 732 ft. lb. torque from 1-5000 rpm, 800 hp from 6000-10000... makes me giggle like a little school girl. [end off topic... teehee (had to throw that one in because of the school girl comment) ]

i believe they even used some in their [first ever] pikes peak cars... if i remember it correctly that's how it was.

The VG is definitely an awesome motor. I would take one over an RB any day but they're definitely very heavy compared to the VQ, heck even Nissan's V8's. I think, V6 wise, the VG has finally met its match with the VQ35.

That'll be awesome... super sleeper!

if you're planning on going with a turbo setup down the road, i'd actually stick with the fuel injection setup. its just much easier to do a turbo setup with fuel injection that it is a carb. maybe if you were doing a roots or screws supercharger and mounted the carb(s) on top of that it wouldn't be bad but it would likely end up being a major headache doing a turbo setup with a carb. i know its been done and such but it'll probably be more work than its worth.

From what I've read, internally the weakest link of the VQ35's is the rods so I'd probably just start with those to hold the power. I think a quick spooling turbo at low boost on a stock VQ would be an absolute blast. Having the higher compression would probably also net you better fuel economy as well. You could upgrade internals and such down the road for a real strong street monster and something that could be taken to the track a lot too. However you do it, I think in the end the VQ would give the low end power that you're looking for and if you want to go crazy on it, it definitely has the potential. Good luck with everything!

I've not heard of anyone doing the swap but the VQ35 would definitely be my choice. The RB just lacks too much torque for my range, as you've mentioned. I wouldn't be surprised if the weight difference was closer to something like 400 lbs. A super lightweight all aluminum V6 compared to a iron block, aluminum head I6. I read of some Maxima guys over at Maxima.org picking up the VQ30 out of a pickup. I believe they estimated it to be under 200 lbs without any accessories. From what I've read, the VQ35 is supposed to be lighter. I believe the block is around 35 lbs lighter. Negative... try, more potential. http://www.theexperience.com/recordrun.htm I've always thought the VG30DETT to be better than the RB26DETT but the VQ35 seems to have taken its place now. At first I figured it'd be a weak pos due to the aluminum block and such and people weren't having the best of luck with them... but that all changed now. R33 RB26DETT: 280 hp @ 6,800 rpm 271 tq @ 4,400 rpm Maxima VQ35DE: 265 hp @ 5,800 rpm 255 tq @ 4,400 rpm I've heard the Maxima's dynoing at closer to 280 bhp though, and the base 350Z VQ's are rated at 287 hp @ 6200 and 274 tq. @ 4800. Granted the Skylines probably put out closer to 300 hp, I'm sure they don't have the torque delivery down low that the VQ has even turbocharged. The VQ35 was designed to produce more low end torque compared to the VQ30, which does pretty good down low itself. The weight difference itself would likely make up for any slight power difference to start with. After you boost the VQ it would likely be like night and day. I used to be all for the RB26... but then realized the truth that its not all that great compared to some of Nissan's other engines. Don't take me wrong though, I wouldn't mind messing around with one but if I had to choose I'd get the VQ35, VG30DETT, or the VH45 over the RB26 any day.

http://myweb.cableone.net/rschell/TIG.htm http://classicbroncos.com/homemade-welder.shtml I've been wanting to put one of these together forever. I need to do that sometime soon.

Take Wikipedia with a grain of salt. Any person can go on there and enter information, I wouldn't trust it to have solid information. I'm sure they used some of the technologies learned in the making of VQ to make the VK45 and VK56 but they're basically the next generation VH in my book. I'm not sure if they used the same bell housing or not as I've not seen any pictures but I wouldn't be surprised if they were similar if not the same (VH/VK).

I hear two things on the open deck design. One was due to emissions regulations and another was due to the block being die cast. They said that due to die casting its harder to make the coolant passages and such so they have to make it open deck. The die casting process makes the aluminum quite a bit stronger than the sand casting process.

I think they finally found out that it was the rods that were the weak link. They figured Nissan just tried making the internals as light as possible making them not handle a whole lot of power. I'm sure under some real high power the open deck design would definitely need to be dealt with but for decent street setup they should handle it pretty well with some good internals.