what to do with this | Page 39 | The Z Club of Great Britain
  1. The Z Club relies on the support of it's paid members - join the club or renew your membership here.

what to do with this

Discussion in 'Rebuilds and restorations' started by tel240z, Nov 9, 2011.

  1. johnymd

    johnymd
    Z Club Member

    I also had a good day of "data logging". I'm back to using my old paddle clutch from when I first did the 1jz conversion in 2010 and I remember the problems I had with it back then. I spent over a year stuck in the low 12's and that's pretty much where I am now. I remember the only way I could get past the 12s block was to change to an organic clutch and slip it off the line to keep the car on boost.

    I will continue to persevere with the current setup and try and master it until the twin plate organic is available (6 week wait). I don't want to kill the paddle as I did a few weeks back. I think its just a case of lots of practice to find the right launch. My 60's were all in the 2.2-2.5 second range which is pretty poor considering I was down to 1.65s with the organic.

    Despite all this, the car is running very well and crisp all the way to redline. The terminals are a little confusing though as it indicates my power levels are no more than with the twins and factory ecu although that was with nitrous. This could well be down to high intake temps and the ecu taking out some spark to compensate for this. I will be analysing the logs from the day to see where I can gain a bit of power. Plus looking into water injection as a way to tame the temperature's a bit. I always remember how nice the car ran on nitrous with the cool charge. Maybe I can get some of that back with the water injection and not have the pain in the butt of getting the bottles filled up.

    Impressive terminals from Wyn which shows there's much better times to come. Quickest times are with Terry, even with a very slippery track. The track got worse as the day went on so it became harder to improve the times as the day went on.
     
  2. johnymd

    johnymd
    Z Club Member

    Yes Wyn, it is nice for the 3 of us to be out competing again. Makes a good day of it and puts on a good display of the cars. Cant wait for the next and hopefully it will bring a few more out.

    It was good to see Jon Bills along to watch and nice to see Mike out and running his 370z. Dare I say a resurrection of the regular drag meetings from the 80's?
     
  3. Wyn

    Wyn
    Z Club Member

    Let the good times roll :D
     

    Attached Files:

  4. Mark N

    Mark N
    Z Club Member

    Great result and you're not far off the 10s!
    Nice pics and vids from the day too, I'm guessing the three old hybrids put a lot of newer cars to shame!
     
  5. tel240z

    tel240z
    Z Club Member

    Well the injectorz are out and the number that i have on them is 01d030b a quick search implies there 42lb and converts to 440cc although i need to confirm that[​IMG][​IMG]

    Sent from my SM-G930F using Tapatalk
     
  6. tel240z

    tel240z
    Z Club Member

    This is them[​IMG]

    Sent from my SM-G930F using Tapatalk
     
  7. johnymd

    johnymd
    Z Club Member

    Do you know what the standard M3 injector size is. My logic being that at 1bar you will be using twice as much air as the standard engine when N/A. Therefore you will need twice the amount of fuel to retain the same AFR and have the same safety margin as the factory injectors. I'm guess the factory would be around 300cc so if it was me, I'd go for 600's.
     
  8. tel240z

    tel240z
    Z Club Member

    It would seem John that the stock injectors are 247or 257 so on the basis of doubling the amount of fuel i need at least 500 cc ones so mine at 440 cc confirms what my R/road man said, so your recomendation of 600 John looks bang on just need to see whats out there

    Sent from my SM-G930F using Tapatalk
     
  9. Moriarty

    Moriarty Forum User

    You need to balance injector size with the duty cycle

    No point in having small injectors running at 90%......or conversely large injectors running at 10%

    Aim for 70 - 80% max duty cycle to give some head room
     
  10. tel240z

    tel240z
    Z Club Member

    Spoke with my tuning man today and he highly recomends injector dynamics as the prefered manufacturer, when we discussed size and i suggested 600cc he suggested 760cc so i done some research and we both agreed on these at 725cc they have great reviews everywear [​IMG]

    Sent from my SM-G930F using Tapatalk
     
  11. tel240z

    tel240z
    Z Club Member

    That was quick.... so bigger is not best then[​IMG][​IMG]

    Sent from my SM-G930F using Tapatalk
     
  12. johnymd

    johnymd
    Z Club Member

    Are the plugs the same Terry? They look a little different.
     
  13. tel240z

    tel240z
    Z Club Member

    Yes John glad to see your paying attention, and the nice man from Bosch supplied nice new plugs and pins to re wire onto my harness
     
  14. Wyn

    Wyn
    Z Club Member

    I was going to say, but thought best not ;)

    Been there ... :D
     
  15. franky

    franky
    Z Club Member

    what were all the terminal speeds from the last runs you did?
     
  16. Wyn

    Wyn
    Z Club Member

    mine? 1st run was up to 134 odd, but went down after that due to a constant misfire
     
  17. tel240z

    tel240z
    Z Club Member

    11.5 128 mph
    11.4 124 mph
    11.25 127 mph
    11.6 125 mph

    All quite consistant

    Sent from my SM-G930F using Tapatalk
     
  18. johnymd

    johnymd
    Z Club Member

    For comparison on the same day and conditions.
    130.55
    124.92
    128.81

    As I guide, I was running in the 132's with my stock twins and factory ecu :(
     
  19. tel240z

    tel240z
    Z Club Member

    In the flesh and shows clearly the 2 different nozzles [​IMG][​IMG][​IMG]

    Sent from my SM-G930F using Tapatalk
     

Share This Page