Jump to content
SAU Community

Recommended Posts

What can everyone tell me about the S20??

G'day George,

Nice rare Skyline you got there :kewl:

The S20! well...A two litre six developed from the Prince Motor Companys GR8 Engine used in the R380 series of race car from 1965. The 160PS S20 is an over square motor with an 82mm bore, 62.5mm stroke, hemispherical combustion chamber, 9.5:1 compression ratio.

. After the August 1966 merger with Prince, Nissan Introduced the S20 in the first Skyline GT-R in February 1969. A 4 door known as the PGC10. The S20 was also used in the Fairlady Z 432 (PS30) Same body shape as the 240Z. The S20 also appeared in the next model Skyline GT-R , the 1971 KPGC10 two door. The last appearance was in the 1973 Skyline GT-R (KPGC110). Same body shape as our 240K two door.

4 valves per cylinder, 3 44pph Mikunis and 2 overhead cams (there's ya 432!) This combination created an engine that would happily rev to 9K+ and produced the most spine tingling note at full song!

Sadly It had a relatively short sales lifespan. Many survive today in Japan, but expect to pay at least $60,000 for an S20 equipped car in need of a lot care. Top cars will trade hands at well over $100,000. The few motors that appear for sale start around $25,000!.. One motor that did escape Japan is now part of an amazing Z 432 project in the U.K. This particular motor turned up in a Melbourne wreckers yard in a very sorry state in the mid '80's. It had been imported as part of a job lot of parts including a couple of G nose fronts for the ZG Fairlady. A wily Brit gent (who on occasion has frequented this very forum! :innocent: ) heard of its escape, and snapped it up. I recall the advert in "Auto Action" and a price of $8000 comes to mind!!!.

There is no doubt a lot more to tell of the S20 . I hope this gets you started.

Jim.

Link to comment
https://www.sau.com.au/forums/topic/81834-s20/#findComment-1486123
Share on other sites

Well now that Jim has said it all :P I have nothing to say, but! I can provide a pictuer of the R380, at least.  

btw, the wily Brit gent owns a spare S20, does he not?

I believe he does, but which is which, and where he aquired a second from is his story, and would be no less interesting than his others I'll bet :)

Jim.

Link to comment
https://www.sau.com.au/forums/topic/81834-s20/#findComment-1486707
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Latest Posts

    • Here is a recipe. Sonic blocks till you get one that has a good enough bore. Get a torque plate and block brace, use your choice of fasteners (arp ect) bolt the thing together empty, half fill it and let it cure. Release it when it has, go to a REPUTABLE RB Builder and get the thing line bored/honed and cylinder honed to size, then wash. Once its all clean and dandy, wash and blow it out again. Then again.  Assemble said engine to your desired clearances with oil control mods, gasket to suit desired CR/Squish ect. Attach your extended sump with proper trap door oil baffles and head drain plumbed to sump with a SUMP BREATHER SYSTEM. Build your front diff with a decent LSD, rebuild your transfer case with a few extra plates, more than likely replace your tailshaft centre bearing and tighten up the rear diff. Tune to minimise excessive midrange cylinder pressure (timing unless you like to split bores and rebuild engines) Enjoy your engine, but hate the fact you are now destroying engine mounts, gearboxes, gearbox mounts, diff output flanges and driveshafts, diff mounts, tailshafts and front CV's.   Disclaimer.... Ive never done any of the aforementioned stuff.......
    • 440s will support well over 400HP on petrol, which is a decent place to be for an RB20. 230+rwkW. Will be a safer bet for idle/low load. 550s would be nice for the extra headroom. I've made the same decision with mine (Neo25). 1000s are probably too big for the Nistuned ECU, so I have some smaller ones.
    • Appreciate everything guys. I did go ahead and get an alignment... most of my complains are solved. Car is not perfect, but it's good enough. If I notice uneven tire wear or anything I'll just take everything back to stock.  Thanks again!
    • They still have not shipped the 550cc injectors as they weren't in stock, so in theory I could ask to get the 440cc ones instead, if those work better in my scenario. They're the same price so really shouldn't be an issue. Unfortunately I am not so knowledgeable in most parts of tuning so I wasn't sure what's best to choose between the two. 440cc ones are the lowest they have (not in stock, but available to buy nonetheless).
×
×
  • Create New...