Jump to content
SAU Community

Race R35 Build

druzilla32

By druzilla32,
in R35 GTR

 Share

Recommended Posts

  • Replies 217
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Posted Images

Martin HKS Enthusiast

Martin HKS

Posted
Posted (edited)

Hello bigmikespec - You might want to ask GT Auto about the head work as they are available from them. Maybe send a PM as they might not want to post that information. I know they have full CNC packages for RB26 SR20 4G63 2JZ etc etc.

Cheers

Marty

Edited by Martin HKS
bigmikespec Veteran

bigmikespec

Posted
Posted

HEADS ALMOST FINISHED!!!

post-24739-0-60098700-1308108788_thumb.jpg

The shape of that chamber is interesting; have the chambers been welded and reshaped? There is one feature in that chamber that gives a hint.

Looks very different to this: http://www.nagtroc.org/forums/index.php?showtopic=41869

Martin HKS Enthusiast

Martin HKS

Posted
Posted

No there is no welding of the chamber and it's no larger than stock (well they have been CC'd and matched in volume so close enough to stock size). Because this job has to be out the door so quick for GT Auto's project we are not going to town on them. We have some more coming to be cut up and developed like the rest of the head's available that we do.

To all those out there these heads are pretty good in stock form from Nissan. It's not like the 2JZ head where we weld up the exhaust runners and make our own for better flow or the Ford BA/BF/FG Turbo 6cyl where the chamber needs to be changed with much larger seats and valves to make a decent product.

Anyway back to the project. We found out some interesting news today about the factory computer system and how it slips the clutch if you make too much torque/boost etc as a failsafe. No good for our project so we have been working with HKS Japan and have a solution using the F-Con V-Pro. I'm not sure how the other cars go with this problem and the Cobb Tuning but we have it sorted.

You can see HKS TV for some cool updates: http://www.hks-tv.com/watch/?watch=158&tabsnm=2

Cheers

Marty

bigmikespec Veteran

bigmikespec

Posted
Posted

No there is no welding of the chamber and it's no larger than stock (well they have been CC'd and matched in volume so close enough to stock size). Because this job has to be out the door so quick for GT Auto's project we are not going to town on them. We have some more coming to be cut up and developed like the rest of the head's available that we do.

So who is doing the head work then? You or GT Auto?

elrodeo666 Mentor

elrodeo666

Posted
Posted

No there is no welding of the chamber and it's no larger than stock (well they have been CC'd and matched in volume so close enough to stock size). Because this job has to be out the door so quick for GT Auto's project we are not going to town on them. We have some more coming to be cut up and developed like the rest of the head's available that we do.

To all those out there these heads are pretty good in stock form from Nissan. It's not like the 2JZ head where we weld up the exhaust runners and make our own for better flow or the Ford BA/BF/FG Turbo 6cyl where the chamber needs to be changed with much larger seats and valves to make a decent product.

Anyway back to the project. We found out some interesting news today about the factory computer system and how it slips the clutch if you make too much torque/boost etc as a failsafe. No good for our project so we have been working with HKS Japan and have a solution using the F-Con V-Pro. I'm not sure how the other cars go with this problem and the Cobb Tuning but we have it sorted.

You can see HKS TV for some cool updates: http://www.hks-tv.co...ch=158&tabsnm=2

Cheers

Marty

I was out at dinner last week with one mate of mine who is one of HKS's chief mechanics and he was saying that on test tuning on the dyno on the Black 35 they ramped the boost up and were able to get 1000ps out of the Black 35 but were getting major slip out of the tranny/clutch and thus have kept power at 900ps but have been working on sorting this since HKS Premium day.

Seeing your car is a full race spec build it will be interesting to see the difference on how it handles on the circuit compared to the Black HKS 35 as that was supposed to be a bloody handfull to drive.

«Cyph3r» Experienced

«Cyph3r»

Posted
Posted (edited)

Looks like the ID 2000's are becoming the injector of choice for E85 big power cars.

Just read the Speed Hunters article followed by the comments, it's no wonder americans get stereotyped as "Stupid & Ignorant"

Edited by «Cyph3r»
  • 3 weeks later...

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

    • joshuaho96
      R34 25GT Engine Light 21

      By joshuaho96 · Posted

      Oil change does not trigger code 21. Code 21 is for coilpacks primary side connection. You can try to clear the code with a battery disconnect, hold down the brake pedal to drain capacitors through the brake lights with the ignition on for 10-15 seconds before you reconnect the battery. I have seen R35 coil conversion permanently cause this code with no ill effects so it might be the resistance it wants to see isn't quite right on one or more coilpacks. Could be inside the ECU, could be the harness, could be a coil. You can test it all if you want or just ignore until the car actually starts misfiring.
    • joshuaho96
      R32 GTS (RB20DE) Injectors Replacement

      By joshuaho96 · Posted

      I forgot you have a Nistune ECU. Use Nistune to do all the tests I mentioned instead of faffing with 30+ year old electrical connectors. You can read MAF volts off that too, there are reference values in the service manual to tell you roughly what it should be in different conditions.
    • GTSBoy
      R32 GTS (RB20DE) Injectors Replacement

      By GTSBoy · Posted

      No. I think it might be the AFM. Hence the use of the terms "swaptronics", which implies the use of swapping out electronics for the purpose of diagnosis. It's about the only way to prove that a small/niggling/whatever problem with an AFM or a CAS or similar is actually caused by that AFM/CAS/whatever. A known good item swapped in that still gives the same problem is likely to be caused somewhere else. They're all the same. Spraying AFMs with cleaner is an each way bet between cleaning it and f**king it.
    • codygrimm27
      Can you mount the ATTESA pump in other locations?

      By codygrimm27 · Posted

      Oh wow! This might actually work amazingly. Do you know the ratio of the diff? I was told the only thing you need to make sure of is if the front & rear diff ratios are the same. Ours is a 4.083 Thanks!
    • GabsReDeal
      R32 GTS (RB20DE) Injectors Replacement

      By GabsReDeal · Posted

      You think its the AFM? I know its a common issues on R32s. I find it coincidental how this issue raised right after cleaning the fuel system. As everything except the fuel system was fine before. I tried running it with the IACV unplugged but did not notice a difference and still stalled. However, the RPM gauge is not in the cluster right now, so I will need to connect the laptop again and use Nistune to check the RPM. I will check this weekend.
×
×
  • Create New...