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Nissan Tuner Cars Skyline/Silva vs the Z
Could someone shed some light on this for me? from what i've been reading, it seems like Skyline's and Silvia's are much more common as tuner cars than Z(any model year)'s. Is the RB**DETT an easier engine to mod? It just seems like in the world of japanese tuner cars, that skyline's and silvias are modded more frequently, and with more outrageous results than Z's. Maybe i'm completely, wrong, i mean, there are some crazy Z builds out there, but is the VQ not really as good of a platform for a build? It just seems like for every one crazy Z build, there are like 5 Silvia's and Skyline builds.
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In japan, those cars are more popular i believe. Last time i went down there, they were like a dime a dozen.
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RB26DETs are iron blocks that can handle loads of power. The silvia and skyline have also been around much longer. The SR20DET is also a very tunable engine with endless possibility.
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Chriz is right, also the older models are a bit more "free" of technology making it easier to do things. With the 370z you have VVEL, computers doing everything, etc. but with those cars (and engines) it is only one computer and the engine.
Also, it seems like the RB engines just fit nicely into the silva's so it ended up being a deadly combination. |
new cars are more about extracting power from computer tuning than physical tuning, because like previously said, just about everything in computer controlled in some form or fashion. those older cars were computer controlled, but only to a certain extent because technology has took off like a rocket in the automotive world. look at it this way, those older car computers compared to the 350z/370z is like dos compared to modern mac/windows.
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the sr20det has indeed been around for a while and is a very popular engine in many cars. its very tunable, very well built and has lots of aftermarket support. this is why its chosen. more importantly silvias are actually very good and very balanced cars. so people just choose them. not saying the Z isnt good but for the cost of an old silvia is just very cheap any ole guy can pick one up and slowly add mods to it and grow to love it. and its lighter and more nimble than say a 300zx. |
agree with the above, those cars were just easier to mod and get more power out of. in japan, in general, the youth market was the S and R-chassis cars because they had 4 seats. young adults with small children who liked to work on their own cars and do some light tuning were their main audience. they were daily driver cars for most. the Z was more of a weekend car and therefore more appeals to an older demographic in general which doesn't lend itself to the same market share. this is all based on what i've heard about JP
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Compression, compression, compression
All factory turbo motors like the RB and SR series run low compression at around 8:1 which is ideal for forced induction. The VQ like in our 370'z is a non turbo motor, so it makes power by running really high compression at 11:1 and clever variable valve lift and duration. This is not ideal for forced induction, as the high compression doesn't leave much room for increased boost and becomes difficult to tune and avoid pre-detonation. Heat is the enemy of compression. A full teardown and rebuild is the only real option to drop the compression which is costly... It's also a LOT easier to fit large turbos to a straight motor rather than a V motor from an engine bay space perspctive. No one really does this as the RB26 is a stronger motor out of the factory...and the fact GTR's run intelligent 4WD makes them one the best value for money street drag cars ever. My old R32 GTR ran in the 11's on street tyres and stock turbos with just minor upgrades. The 2JZGTE from the Supra is also a ball tearer of a motor for big boost. my 2c worth |
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If I were to do a RB engine build, and this is my opinion, I would not do it in the 370z.
The car already is a nightmare of computers and a simple engine swap is not so simple anymore. I would take a silvia and do it in that and throw on a nice aero kit and be golden. |
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I do know of a few, one of which is on eBay currently, but last I looked it was getting close to 30k for the car and it still had a couple of days left. |
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http://sphotos.ak.fbcdn.net/photos-a...17923_2201.jpg http://sphotos.ak.fbcdn.net/photos-a...11838_9700.jpg http://sphotos.ak.fbcdn.net/photos-a...31434_5418.jpg http://sphotos.ak.fbcdn.net/photos-a...311839_247.jpg so the consensus seems to be, that the Z is not the best candidate for a tuner car? |
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Though all the above stated are all 90% true. There's one giant and much simpler answer than all of the above. The favored bodystyle of most modders are GT cars, not Sports cars. Historically GT has been the most popular mod car. Mostly for the reasons mentioned above, but look at the case of the skyline... it has the same engine and compression ratio as the fairlady. But its still much more popular to mod. That's due to the mod culture started with GT. So that's where enthusiasts gravitate.
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the thing is that the VQ can only handle 1000bhp max and RB can so far handle 1340 bhp at its max:iagree:
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haha an un-usable 1000bhp vs 1340 bhp... hmmm which do i want!?
jk i understand what you mean, but ithink 1000 hp is more than anyone except bullit is trying to get out of our engine. |
hahahaha thanks for the plug Jeff :tup:
Remember guys if your going to build a car it has to be application specific. Mine just happens to be versatile enough to DD and do standing mile runs :D |
Well it looks like I will be adding a nice car to my collection soon, going over a few things currently and working out all the plans. Along with not destroying the 370z plans to much.
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which model/year? are you gonna do a 240sx conversion or get something JDM?
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Still waiting to hear all the details on it, should have news late this week or middle of next probably, the car will be imported.
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sick! s15?
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No, going with a S14. The S15 is a really nice car, and of course non-existent here in the States, but I prefer the S14.
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the s14 is indeed really nice. in terms of aftermarket, the one with the nicer body kit is going to look better so doesn't matter that much where you start. i'd take either.
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I believe turners stay away from the Z because it lacks force induction. If Nissan ever turbo'd the Z it would be in higher demand among tuners. This won't happen cause they don't wanna ruin the market share they have with the GTR. I hate that the Z has so many cpu's attached to it, but I guess this is the sign of the times
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maybe the solution to cracking VVEL is through hacking the ECU via the TPMS. Cars hacked through wireless tire sensors ... yes... all tuners, i have found the solution, feel free to send money via pay pal
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The Skylines and Silvias have been around for a very long time. It's expected that the aftermarket for these cars would be huge. I've investigated building a silvia tuner car and they are readily available (except for the s15) in the states. However, to maintain it and have it properly built would be expensive and frankly I'd rather just save it for the Z. The Skyline and the inline 6 motor (arguably the best motor layout ever) is a different monster. However I would not currently purchase an r33 or r34 unless it is a kaizo or motordyne car that has been federally approved. You can find loop holes to get it state approved but that means jack sh!t when getting it federally approved, one day big brother catches on and your toast. I know a few members on the skyline owners forum who will sell the second they are under the impression that big brother is sniffing around, why take the risk?
The Z is still an aftermarket baby. We just got F.I. and Top Secret who builds some of the most insane machines out there, hasn't even released their z34 engine build yet. A lot of things haven't been done yet, namely a built shortblock N/A or F.I, or a built longblock N/A or F.I. $ is an issue and no one wants to be the first. I think after bullitt figures out his project and we see how he addressed engine management, heads, and such the Z as a whole will make leaps and bounds in the aftermarket. |
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