I had two random combinations of letters and numbers to investigate – S20 and KPGC10. I was pretty sure that a combination of four consonants that clearly don’t form part of any word in the English language, followed by two numbers would narrow my quest for information quicker than S20 so that’s where I’d start.
Forums, or to be precise the GTR forum, were right at the top of the organic SERPs. Unusual, I thought and a clear indicator that information around this car is sparse and difficult to find. There were a number of interesting threads from a couple of years ago and I was tempted to ask a few questions. Should I? Shouldn’t I?
I didn’t and still don’t like forums. Don’t get me wrong, the information available (if you can find it) is second to none and used as intended, to connect and discuss with others sharing in your interests is of course brilliant. However, in my opinion this is all completely ruined by the prevalence of an increasingly large army of keyboard warriors looking for any opportunity to verbally castrate an unsuspecting ‘newbie’. To avoid a public ridiculing I decided “no questions”. I knew I was an ignoramus on the subject, just didn’t need a stereotypically teenage nerd abusing me for it from their bedroom, between levels of grand theft auto.
Very quickly it became apparent that there was a whole spectrum of Hakosukas, all very rare outside of Japan but all very different. Here is what I’ve learned so far and while it is not be the full technical picture it gives some insight, call it a layman’s guide:
Skyline
The Skyline started out in life at the Prince Motor Company in 1955. It wasn’t until 1966, when Prince merged with Nissan, that the Nissan Skyline (Nissan Sukairain) was born.
C10
The first Skyline to be launched under the Nissan badge was the C10. It’s development began in the Prince R&D facility but the name was dropped in favour of Nissan before its launch in 1968. The 4-door sedan was available in two variants, the first with a Prince 1.5l OHC G15 I4 engine and the second with the Prince 1.8l G18 version. Various other models were built including a coupe in 1970.
These early models are generally not discussed at any length and it’s very rare to find pictures even, unless your inclined to dig. It’s here however that the confusion begins, and having generally berated forums above, the details of these cars are explained in amazing detail by a UK expert in many threads which are well worth a read. Usually they start with “Is this a genuine Hakosuka?”…tumbleweed…
Hakosuka
Firstly, Hakosuka is a combination of two words, Hako, meaning box and Suka coming from Sukairain, or Skyline. So translates simply to box or boxy Skyline.
Secondly, every C10 Skyline is a ‘Hakosuka’ – it’s not a word that’s interchangeable with GT-R and herein is where the majority of the confusion arises.
GT-R
As the model range expanded, variants included the (long nose) 2000 GT and 2000 GT-X with an L20 straight six engine.
The first GT-R to market came in 1969 as a 4-door sedan and used a Prince designed DOHC engine, the S20 – things were beginning to become clearer to me. This was followed by a 2-door coupe in 1971, again with an S20 engine and the variant that most call the ‘Hakosuka’and indeed the car I’d been unknowingly searching for.
The confusion stems only from the lack of information combined with real excitement around the car and it’s mystery outside Japan. To get a basic understanding of the C10 range there are a few key letters to learn in the chassis codes. Here’s how I understand them (bearing in mind I’m still a novice):
K – denotes a 2-door coupe. You’ll often see 2HT (2 door hard top) in adverts, auction sheets which derive from the fact it’s a ‘K’.
P – suggests a ‘Prince’ engine, G15, G18 or S20.
G – denotes the long nose body type and cars will use a 6-cylinder engine.
With these in mind let’s dive into what these codes are and what you can expect from a factory original. Let’s start with all the letters!
KPGC10 – long nose, 6-cylinder, 2-door coupe with a ‘Prince’ engine, which has to be of course the S20. This is a GT-R and it is defined in the chassis code by the combination of P and G.
KGC10 – long nose, 6-cylinder, 2-door coupe but without a ‘Prince’ engine, namely the L20. These are most commonly confused with a GT-R.
PGC10 – long nose, 6-cylinder, 4-door sedan with the S20 engine, a GT-R.
KPC10 – short nose, 4-cylinder, 2-door coupe.
And finally (for this list, not the extensive list) an off the radar the VPC10 DX – information almost none existent, so don’t ask what the V is for, however I have to say it’s a car that looks great in my view.
So now I knew roughly the model range (to an extent), the vastly different pricing began to make sense, the Czech car was a KGC10, the carsensor cars genuine GT-Rs.
Do I want a genuine GT-R…hmm? I couldn’t believe I was still contemplating it, six figures for a potentially soluble, 40+ year old Nissan.
Having just got comfortable with the pricing, I stumbled across results from an August 2014 Sotheby’s auction that blew the landscape wide open and released the investor inside – the hammer had gone down on a KPGC10 at $220,000. Time to bring in the experts…
Sources for some technical information: Wikipedia, GTR forum, Pistonheads.