Last month, I gave you the rundown on GTR-700, a BCNR33 Nissan Skyline GT-R drag car that’s coming out retirement and being rebuilt to a world record-challenging specification. Today, I want to share with you the car that has inspired everyone involved to pursue the idea.
Built by Croydon Racing Developments in Sydney, Australia, JUN II is the culmination of years of development. It began as a hard-tuned street car called JUN, but in 2012 things got serious and three year’s worth of re-engineering followed. The goal was to push the RB engine and the BNR32 Skyline GT-R as a whole beyond what had ever been done before at CRD, and its achievements to date speak volumes. Not only has the car run a 7.89-second quarter-mile, it retains street trim and is regularly driven on the road.
The engine build is based around an RB30 block running a Nitto 3.2L stroker bottom end with all the necessary cylinder head upgrades to take the abuse of constant full-RPM launches.
It also runs a dry sump lubrication system, something you’d expect to see on a car pulling the sort of times this thing able to do over and over again.
Sitting alongside the engine is the Precision Pro Mod 88 turbocharger which in the car’s final configuration was pushing 55psi boost via the Hypertune throttle and intake plenum. Robert Marjan, the owner and driver, estimates the engine was outputting 1300hp at that boost level, but it’s really just an educated guess as they couldn’t hold the car down on the dyno to get a proper reading. Whatever power it’s making, it’s obviously managed effectively, because one hurdle is making those sort of numbers reliably, and the other is actually making full use of all that performance and putting it down to the ground in an efficient manner.
Got fuel? Twin fuel rails and 12 high impedance injectors should cover it. For when a little help is needed there’s a shot of nitrous available too.
A 7.89-second pass is seriously fast, but when you factor in that the R32 retains most of its trim and weighs just under 1700kg with Robert at the wheel, it really puts extra emphasis on the achievement.
Hit play above and have a listen to Robert explaining how it was all possible.
During 2015 the car hit a brick wall at around the 8.3-second ET mark, but upgrading from a MoTeC M800 ECU to the new MoTeC M135 allowed the engine to perform at its full potential. I like the 7-inch MoTeC C187 color display hiding away inside the instrument binnacle, and there’s also an additional LCD display in the center stack right under the keypad that controls all the various switchable functions of the GT-R.
A key to the car’s ferocious performance down the quarter mile is the adapted Turbo 400 3-speed transmission which Robert actuates via a Precision Performance Products Kwik Shift II shifter.
The best thing for me however, is how the exterior has been left pretty much stock.
If the 15-inch Mickey Thompson drag rubber doesn’t hint at this Skyline’s abilities then I don’t know what would.
There’s even room for the groceries in the back! JUN II has pretty much done what Robert and the guys at CRD built it for, which means it’s time to see what they can do with a lighter and more drag-focused chassis. All eyes will be on GTR-700 – which Robert will also be piloting – once it’s completed.
I for one will be rooting for these guys and really hope they can take it into the 6-second zone…
Dino Dalle Carbonare
Instagram: speedhunters_dino
dino@speedhunters.com
This thing is absolutely nasty, and easily one of the toughest GT-Rs I've seen, even in its unassuming guise. Croydon is most definitely one of those upper-echelon RB tuning outfits, right up there with RIPS and Mercury.
Thanks for the showcase Dino, been curious to learn more about the car!
https://youtu.be/HvUnuALTggU
Please drop in a new steering wheel and handbrake skirt!
I think from memory they said it weights 100 kg MORE than the standard car
I read that somewhere too, it’s absolutely insane to think this is only ‘one big passenger’ heavier than stock, but is pushing close to sub 7 second
LukeEVOVIII Just watched the video and you are correct. Not surprising considering full interior + cage + Fuel Cell, etc. Absolutely amazing car.
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I heard that it utilized a RD28 block. I was thinking that that was kinda weird but cool to use a diesel block for the build but I guess they do use the RB30 block.
My Uncle Hayden got an awesome metallic Volvo S60.. T6 R by working part-time online.
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I still remember the white/yellow Croydon R32 GTR. Saw it for the first time on an old "High Octane" DVD (2001 or so).
At that time it was the fastest GTR in the southern hemisphere with a 10.3s 1/4 mile.
That R-32 is freaking amazing. The amount of time and hard work put in to the car to break into 7sec is just stunning.
Amazing work CRD, keep it up!
mGlesnes The work that has gone into this car boggles the mind. I hope people realize just how much
exoticblake LukeEVOVIII The driver is included in the weight they state
abezzegh87 Haha but isn't it cooler to just leave it as is, stock steering wheel on a 7-sec GeeeeDeeeAhhh lol
Turbology My pleasure! I'm sad I never got to ride in it
Amazing car, nothing short of an absolute beast, but as of last week the RH7GTR now holds the title of quickest true street GTR with a 7.87 so there's a few monster GTR's down under!
MaartenVogels The white and yellow car was built/run by Croyden's Wholesalers in NZ, completely different outfit to Croyden in Oz who built Jun II. Just fyi.
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The twin fuel rail and TWELWE injectors have made me freak out!
speedhunters_dino abezzegh87 Well in a way you're right! But still even with the old steering wheel this thing barely qualifies as a "sleeper"
Now this IS GODZILLA! That acceleration was just incredible, SILLY FAST!
Love it keeping the original exterior, a true KILLER sleeper.
Never try to race pink slips with this one when you see it right next to you at a red light...
That shifter looks like it's in backwards, the finger grips are where your palm would go.
Still love the car obviously, its fucking incredible.
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AleksanderKortylewski Why? It's something that's not that weird to say on highly tuned cars.
Saw this car on 1320video! It is a quite Interesting build with the T400 and RB30.
Spaghetti Any vids?
ChrisGoding
speedhunters_dino Spaghetti https://www.youtube.com/watch?v=Razpcw2iIPk
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I am in shock that a student can get paid $9445
in one month on .................
details http://tinyurl.com/youtube-have-jobs
speedhunters_dino Spaghetti
https://youtu.be/Razpcw2iIPk
C & V performance reset the record at melbourne jamoboree.
This car uses a billet rb30 block, notto stoker to 3.2l and twin high mount turbos.
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N8B speedhunters_dino Spaghetti Nice thanks for posting that. Looks like JUN II may have to go out again...
speedhunters_dino N8B Spaghetti
it will get very interesting over the next 12 months. another NSW workshop has also got another car in the running, having run 7.94
https://youtu.be/_8U6QL1qKnU
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They're record already broken anew. :0 It's the guys from CV Performance this time. Hope you can feature is also speedhunters.
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