Jump to content
SAU Community

Just Jap Racing Time Attack R35

Just Jap Racing
 Share

Recommended Posts

Just Jap Racing Grand Master

Just Jap Racing

Posted
Posted

Hi guys,

As many of you are already aware, we have been developing one of our R35 GTR's in Japan to compete in the street class of the Japanese Time Attack series.

This car has been a mammoth project, engineered and built with ATTKD in Japan, sporting a VR38 stroked to 4.1 Litres, with the HKS GT-800 Twin Turbo Kit and uprated driveline, and yesterday in practice it managed a 58.6 at the Rev Speed Tsukuba Lap Battle, setting a new record for the street radial class.

More details to come later, but we thought you would enjoy some updated pics of the car in its current form

img0956gp.jpg

38984125348686457131073.jpg

Cheers,

Steve

Just Jap Racing

Link to comment
Share on other sites
Just Jap Racing Grand Master

Just Jap Racing

Posted
  • Author
Posted

that is very quick, congrats Steve. I am also interested in knowing what tyres that was on

Hi Mark,

We ran it on some brand new Hancook tyres we were testing out.

I just corrected the time I originally posted, the actual lap time was 59.3 which as I said we are delighted with! :)

Link to comment
Share on other sites
turboadam Enthusiast

turboadam

Posted
Posted (edited)

Correct me if I am wrong but that is very little improvement for such huge changes to the car. I gather that the suspension is not yet setup? <BR><BR>Also, I am curious as to why increase the displacement when getting HP out of these things is hardly difficult at std displacement.

Edited by turboadam
Link to comment
Share on other sites
Just Jap Racing Grand Master

Just Jap Racing

Posted
  • Author
Posted

Correct me if I am wrong but that is very little improvement for such huge changes to the car. I gather that the suspension is not yet setup? <BR><BR>Also, I am curious as to why increase the displacement when getting HP out of these things is hardly difficult at std displacement.

Fair question Adam.

The car is still under development and has only recently been finished so this was an early testing session, we have a long road ahead with suspension tuning, more tyre testing and a lot more.

HP wise the car is also not running at full power as yet, long way to go before that happens

We elected to build the car tough from the get go to ensure it was capable of making big power reliably - We are using the HKS GT-800 Turbo kit and opted to strap it to a built engine rather than stock.

There will be more to come, we certainly havent seen the cars full potential as yet

Watch this space!

Link to comment
Share on other sites
domino_z Mentor

domino_z

Posted
Posted (edited)

that's because the stock GTR is so good out of the box

but also because tsukuba is a tight circuit - and imo the R35 has outgrown it

the JDM tuners like Amuse, Mines, MCR are in the 58-9s with their square tyre setups, exhaust + ecu mods, huge aero parts hanging off the front and rear

im sure you'd see a bigger margin by % on a power circuit like fuji with a big hp built motor (just as HKS have done with benchmarking their continual development car/s)

Edited by domino_z
Link to comment
Share on other sites
Just Jap Racing Grand Master

Just Jap Racing

Posted
  • Author
Posted

that's because the stock GTR is so good out of the box

but also because tsukuba is a tight circuit - and imo the R35 has outgrown it

the JDM tuners like Amuse, Mines, MCR are in the 58-9s with their square tyre setups, exhaust + ecu mods, huge aero parts hanging off the front and rear

im sure you'd see a bigger margin by % on a power circuit like fuji with a big hp built motor (just as HKS have done with benchmarking their continual development car/s)

Hit the nail on the head!

Small tight circuit and early days yet :)

Link to comment
Share on other sites
bigmikespec Veteran

bigmikespec

Posted
Posted

LOL, I retract my statement.

Yesterday your post stated it's done a 53.9. Hence I said THAT IS QUICK.

Today your post has been altered and says 59.3. Now I have to ask, What is the hold up? :P

French pastries made it fat! :)

Link to comment
Share on other sites
Just Jap Racing Grand Master

Just Jap Racing

Posted
  • Author
Posted

Small update for you all, it turns out the time I originally received was incorrect and I have confirmed from ATTKD who were driving the car at Tsukuba that the car actually did a 58.6, narrowly knocking their own white R34 GTR off the top with the new record for the street radial class at this circuit.

We looking forward to bring you guys more updates soon.

Cheers,

Steve

Link to comment
Share on other sites
Just Jap Racing Grand Master

Just Jap Racing

Posted
  • Author
Posted

A bit of a random question but do the japanese take offence to the word 'Jap' written on the side of the 35? I know that some consider it an offensive slur.

Hi Ryan,

No they don't, and we have been doing business in Japan for a very long time :)

Link to comment
Share on other sites
Marlin Grand Master

Marlin

Posted
Posted

Small update for you all, it turns out the time I originally received was incorrect and I have confirmed from ATTKD who were driving the car at Tsukuba that the car actually did a 58.6, narrowly knocking their own white R34 GTR off the top with the new record for the street radial class at this circuit.

We looking forward to bring you guys more updates soon.

Cheers,

Steve

That's more like it! Well done! :)

Link to comment
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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      Link G4X GTTLink questions, MAP Boost Solenoid

      By GTSBoy · Posted

      You've done it wrong. I don't have time right now to type up enough. I'll have to come back to it or maybe someone else will in the meantime.
    • shortyboy
      Link G4X GTTLink questions, MAP Boost Solenoid

      By shortyboy · Posted

      I was able to complete installation of the G4X ecu. I needed to reroute MAP vacuum signal from stock location to where BOV is connected on the intake plenum. Has anyone needed to do the same? When I connect vac port by the BOV flange to my HKS BOV, it doesnt work and I get flutter. I would to get BOV working, where would it be best to T in? Or would it best for me to move MAP vac line and T into FPR? Secondly, I installed a MAC 3 port boost solenoid and wanted to know if i routed it correctly. I place two lines from stock boost solenoid and placed it on ports 1 and 2, leaving 3 vented. The T for wastegate and boost source on compressor elbow is on port 2, and port 1 is connected to turbo inlet intake pipe. Please see attached pictures. Ill upload ecu config later today. Thanks in advance.
    • Zackery
      Sau Members Based In Japan

      By Zackery · Posted

      some people are still around weirdly enough - most people just use facebook now to ask the same 12 questions tho XD  
    • PranK
      Sau Members Based In Japan

      By PranK · Posted

      Omg Rezz! Yep we're still here and actually seeing a trickle of oldies coming back.  How's things? 
    • GoHashiriya
      From Japan and back to Europe, my sh*tbox R34 GTT

      By GoHashiriya · Posted

      So I raised the car up a fair bit for shipping - see image - then lowered it again when it arrived. I then rushed to get an alignment in NL before the track and the shop just wasn’t anywhere near as precise as what I got in Japan. The guys that did the alignment this week said there was a fair amount of toe in the rear that could have contributed to the understeer. It was also the case that the rear camber went from about -2 to -3 at the shop in NL. However, since I’ve now got slightly wider tires in the rear - NS2Rs run wider than Accelera 651S - I could only get a minimum of -3 in the rear now due to clearance. Front is now -2.75 (-2.45 in minutes) due to being raised a bit (previously -3 in JP). So it’s likely a combination of the two factors, camber and toe. The issue now is I have more camber in the rear than the front and the next step on the front Cusco arms will put me at -3.5ish front which seems a bit excessive to me. The weird thing is I’ve never had any understeer at the track in Japan but they are very different circuits - Japanese circuits are much slower than the one I’ve been to here.    I’m probably going to have to start another thread for the E90. The plan is sort of to keep it as a daily but progressively mod it into a track car - honestly, you need a cage for the sort of speeds you go here. Just ordered the M3 front arms btw.  Love the car despite it being in pretty shitty condition. Oil analysis came back okay and it seems to have stopped consuming oil since fixing a load of engine bay things. Saw yours is a 335i right? f**king mistake on my part getting the DI N53 over the N52, fuel economy is insanely good though at 14-16 km/L.   Cheers, it’s great to see the benefits and pitfalls of different places. I’m contemplating going back to the U.K. around next year as the cost of living in the Netherlands is just ridiculous. GF is nagging me to settle and buy a house but I don’t know what LSD to buy. 
×
×
  • Create New...