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Twin Turbo thread Redone: Skyline lineage & Heritage

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Old 07-26-2014, 11:53 PM
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Twin Turbo thread Redone: Skyline lineage & Heritage

Hey MyG37 whats up, this thread will reintroduce the topics discussed from the previously deleted "twin turbo" thread, except more concise and to the point. i'll update the thread with my previous research time to time. so G/skyline enthusiasts can appreciate the heritage and history of their cars.
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Old 07-27-2014, 12:01 AM
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Lets begin by saying that there are now 13 total Skyline Generations, and out of these 13 gens 6 gens have gone GTR as per Nissan, and about 8 gens of GTRs as per aftermarket customer modifications.

Nissan's----- Skyline:GTR ratio= 13:6
Nissan's + Aftermarket Customer Produced---- Skyline:GTR ratio=13:8

While the R series Skylines and respective GTR variants were never released in the United States, Nissan did export their V series skylines as Gs to the US market. The engines in these Gs (the VQ) formed the basis of today's NISSAN GTR's VR.

we'll get into much more next post!

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Old 07-27-2014, 12:27 AM
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Here's a short video highlighting the first 12 Skyline Gens including some GTR variants. 13th Gen the Q50 (V37 Skyline) is not included.

just a note here: the last car in the video called the "R35" Skyline GTR...we will discuss later why its a misnomer and it should not be called "R35." Nissan likely went with "R35" nomenclature as a marketing tool, to show that its latest GTR has R34 genetics, and although it does as a skyline, the "R35" is more closely related to the V35 and V36 Skylines whose engine and possibly body chassis (V36/G37's) was used as an inspiration for its design.

Vid Credits go to TheFletcher, on youtube.
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Old 07-27-2014, 10:10 AM
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Hey Gill, I'm going to move this to the "other cars" folder since the newbie topic is for introducing new members to the site.
Cheers!
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Old 07-27-2014, 10:15 AM
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Great! Thanks
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Old 07-27-2014, 10:24 AM
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Welcome back Gill!
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Old 07-27-2014, 02:28 PM
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Hi Sam thanks! My pleasure to talk all things skyline on this great forum
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Old 07-27-2014, 10:26 PM
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it's important to understand skyline nomenclature. if a skyline has no turbos installed, it is called a GT, if there is one turbo it is called a GTT, and if it has 2 turbos mated to the engine it is called a GTR.

Let's take the R34 GTR's engine name: RB26DETT. RB is the engine class,26 means 2.6 L displacement, D=dual cams, E=electronic injectors, and the TT means 2 turbos, ie Twin Turbo. ANY GTR made by Nissan ALWAYS has Twin Turbos installed except the first 2 where the technology may not have been well developed at the time. but those early engines set up the RB class in present R series GTRs which are able to tolerate forced induction well. and these R series GTRs are always Twin Turbo Charged, if not Nissan DOES change the GTR label to either GTT, GTST, or GT. Hence presence of a Twin Turbo has come to define GTR nomenclature today, although the first 2 Nissan GTRs did not have any Turbo at all. Even the latest GTR is a twin turbo, ie VR38DETT, TT=twin turbo.

This is why g37s sold as stock are also called 370-GT. Add a Turbo to it and you can call it a GTT, add 2 turbos and you have a GTR in the G37 (V36 Skyline). Inversely if you were to remove a turbo from the R34 GTR, it would be called the R34 GTT; remove both turbos on the R34 and you have what is called the R34 GT.

this naming is applicable only to the Skyline and not the Z, although both share the same engine. In essence the Skyline was a Prince Motor Company venture, while the Z has always been a Nissan venture. Prince Motors merged with Nissan due to financial issues and the overall name Nissan was kept. Prince engineering technology powers most of Nissan's vehicles today, if not all, especially Prince Motor Company's brainchild, the Skyline. Therefore, the Z today is actually running Prince, and therefore originally Skyline technology.

Another prominent vehicle powered by prince/skyline tech is what I like to call the Skyline's little sister, the Nissan Silvia, which boasts an SR20DET in its top model. this engine is a variant of the skyline's earlier engine.



Nissan Silvia S15 Spec R

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Old 07-27-2014, 10:53 PM
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Above is an R34 Turboless (or naturally aspirated) Sedan. Nissan calls it the R34 GT which is again consistent with above mentioned nomenclature.

http://www.carfolio.com/specificatio...ar/?car=184327

The above URL highlights the naturally aspirated (NA) R34 25GT Sedan. Nomenclature is similar to the NA V35 and V36 Skylines where the engine displacement was included in the naming, ie 350GT for g35s and 370GT for G37s (also called Q60s now)

We will have more fascinating Skyline knowledge next post!

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Old 07-28-2014, 10:18 PM
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The single most popular Skyline ever created, the R34 Nissan Skyline GTR Coupe. coming in at an amazingly cheaper cost than its European rivals, this GTR has had no problems keeping up with the competition.

The V35 Skyline being the R34 Skyline's direct successor as the chassis design number goes from 34 to 35, and the engine going from an RB I6 to a VQ V6, hence the change from R series Skyline to V series Skyline. The VQ V6 engine is the direct precursor to the VR V6 used in the latest Nissan released GTR. This is why it is a grave misnomer to call today's GTR an R35. Its engine has nothing to do with the RB used in the R32 to R34 Skylines.

R series Skylines never went further than 2.6L in the RB class of engine and have always had an Inline 6 (I6) cylinder arrangement, and never a V6 formation found in today's GTR. If we watch engine evolution and progression in the V Skylines you'll see that the V35 had a 3.5L VQ V6, the V36 (G37) upgraded to a 3.7L VQ V6, and then finally with racing enhancements and Turbo capabilities factored into the VQ, the GTR was given the 3.8L VR V6. Therefore it is MORE appropriate to call today's GTR a V36 GTR and not an R35 GTR; its engine, its design, is all too similar to the V36 Skyline.



V35 Skyline GT Coupe

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Old 07-28-2014, 11:20 PM
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From the above given information it should be clear now that contemporary GTRs come in 3 engine classes:

RB GTRs (ie R32, R33, R34)

VQ GTRs (ie aftermarket customer produced [ACP] Twin Turbo G35s and G37s)

VR GTRs (ie V36 [Nissan R35] GTR)

Consequently, if you have a Twin Turbo G37 or G35 here in the United States, you technically have a GTR on your hands. And it should be fine to apply a GTR badge to the back trunk indicating your Skyline/G/Q60 is Twin Turbo Charged.

Later we'll look at how some aftermarket modifications have impacted Skyline nomenclature.

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Old 07-28-2014, 11:42 PM
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Nissan V36 GTR, VR V6



G37/V36 GT, VQ V6 (naturally aspirated)



R34 GTR, RB I6

Note overall design and engine similarity between the Nissan V36 GTR and the G37/V36 GT as opposed to the R34 GTR.

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Old 07-31-2014, 11:27 PM
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Looking at the naming structure for these cars, we see that the RB class is given an "R" prefixed to the chassis design code, ie R32, R33 etc. Similarly in the V Skylines we have a VQ engine class, hence the V prefixed to the design code, ie V35 (g35) V36 (g37;Q60).

GTR fans and passionists just cant keep their hands off the Skylines, but in doing so, have actually shown what a real R35 looks like. Earlier we made a point that today's GTR isn't an R35, but this thread didn't say anything about an R35 not being in existence.

Keep in mind the naming structure for Skylines, the Letter comes from the Engine class (RB=R, VQ=V, VR=V), and the chassis design is designated by a number ie (32,33,34,35 etc). What happens when you take an RB engine class and put it into the 35 skyline chassis design? you essentially have an R35.

So the true R35 GTR is a V35 whose VQ was replaced with an RB, hence dropping the V from the code for an R, making an R35; and if that RB is twin turbo charged sitting in a Skyline chassis, you have a GTR as well.



This is a V35 Coupe whose VQ was replaced with a twin turbo charged RB engine, because the RB is the car's power source now, this car is no longer a V35, but an R35, indicating an RB engine class in a 35 skyline chassis design.

Here's a link to learn more about this car: http://www.turbomagazine.com/feature...car_specs.html

There have been other drivers who have also converted their V35 GTs into R35 GTRs.

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Old 08-02-2014, 10:08 AM
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Here are some badges used on the Skyline over the years. The "S" means there is a carburetor on the engine.















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Old 08-02-2014, 10:36 PM
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The latest 13th generation Skyline: V37 GT sedan, VQ V6, badged as Infiniti Q50 even in Japan.



V37 Skyline Eau Rogue GTR Sedan. Not the first time a GTR was in sedan form, the first 2 GTR coupes also had GTR sedan counterparts; the R33 Gen also had a GTR sedan. But the V37 generation is probably the first Skyline to have the sedan version of the GTR to release before the Coupe version.

Eau Rogue GTR will boast the V36 GTR's VR V6 engine as well, which as mentioned earlier is twin turbo charged represented by the "TT" in VR38DETT. The Eau Rogue will also be the first GTR to be badged an INFINITI by Nissan.

When this car is released Nissan's Skyline:GTR Ratio will be 13:7, and

Nissan Company Produced (NCP) + Aftermarket Customer Produced (ACP) Skyline:GTR Ratio will be 13:9.

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