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didier

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Everything posted by didier

  1. didier

    Well, thank you for the comments,

    I think reverse flow with an Electric water pump ( Davies Craig, Australian product !)will have a good result, I shall monitor the flow with Megasquirt options, no need for a thermostat . wait and see,i'm not finished in my build.

    FYI, to escape gazeous bubbles, i have two return hoses to expanding tank, i copied the "evans" patent . ...

  2. didier
    1) Gsxr throttle come from 1998/1999 750 GSXR, later models, you'll have two butterfly in the throttle, not worth it. 2) Mégasquirt is easy to build,and to tune, i'll have Edis system for spark control, very reliable 3) the best pumps are Bosch for EFI
  3. didier
    I agree to that totally ! I'm still waiting for your DOHC RB build results ! amazing !
  4. didier

    HI

    i like you intake it looks great

    i also like the water setup on the head and iv just finnished a reverse water setup just like yours with my mods as well and it works very well iv really had some great resolts with it good luck with the project and well done kind regards pmc

  5. didier
    Do you mean " port face " is the head flange ? the length to valve seat is about 110mm, so 13 in (330 mm)+110= 440 mm, you are right for an harmonic tune not so high in rpm But 15in ( 380mm) + 110= 490mm is very long,not very good for +6000 T/mn I make my calculations with a french firmware, and i will make differents lengths of silicone hoses and fiber trumpets , and i 'll test in real world next time. excuse my english !
  6. didier
    Look fine, but the trumpets are too short for a good harmonic tune , unless + 10000 revs/mn
  7. didier
    Good choice,and good study !
  8. didier
    Yes, with EFI, you need a high pressure pump, a damper, a regulator with vaccum hose, AND a return line. I think every Z gets a return line with SU's originals mounts.
  9. didier
    Here is my working process
  10. didier
    24hp more with 38mm venturis , versus SU's carbs is 10 % more power, but a venturi is always a restriction in air flow, so don't expect get much more power without EFI ( Gsxr itb's like mines is the cheapest way to go, but jenvey, extradubody, and many other systems are available). Just another advantage is idle tuning seriously improved with EFI Didier 260 z 2+2
  11. didier
    Yes i've built an MS2/V3 and i get a wide band from Alan TO , but my car is still on restauration, i finished the body welding, and i work now on glass/polyester moulds . Sorry for the wrong size of my photos, i'll correct that . thanks
  12. didier
    Another photo showing the throttle command system Edited: I re sized your photo instead of just deleting it. Please re size to avoid them getting deleted.
  13. didier
    Yes i know this thread, it was a good knowledge for me, but i think the peter Mac donnel's process on auszcar (pmc26) forum is best : he is drilling vertical holes between intake and exhaust ports to by pass the casting webs inside the head.Cooling flow is improved.Did you see that ? As for me, i stay with my system, flowing fresh water to each cylinder . wait and see. i'll try the laser temperature gun if i get one
  14. didier
    Yes, you are absolutely right with this description !thank you for the help ! the big steel hose you see above the bodies will flow fresh cooling liquid above each exhaust port. Cooling issues on these datsun heads are a major problem, I 'm making a "reverse flow" system with a Davies Craig Electric water pump .Two little hoses in the upper pockets of the head will evacuate the bolling gases returning to the expansion tank . right? best regards . Didier 260 Z 2+2
  15. didier
    Well, i'm not easy with foreign language, but... using itb's Suzuki 750 GSXR 1999/2000, silicone hoses, clamps, custom made epoxy/carbon trumpets, I can use the oem command bracket in the midle of the system. another picture of the fix on the head flange :
  16. didier
    Hi, I made it with GSXR ITB's here are some photos :
  17. didier
    what is number 21 for ?
  18. didier
    Longer A and shorter B would increase the fuel flow (more capacity at rest), so i 'll go for PN 016 or much more PN 012 .
  19. didier
    Good job ! i think you have 3 scavenge hoses ? 2 for the sump and 1 for the head ? what is your pump ? Moroso, paterson, weaver ? other? lobes or gears ? and i'm sure your EWP is a Davis Craig ( australia !) 80 or 115 l/mn ? Sorry for my bad english €€€€ !
  20. didier

    What ITB

    didier replied to caen fred's topic in Fuel Delivery

    excellent ! :lol:
  21. didier

    What ITB

    didier replied to caen fred's topic in Fuel Delivery

    camera cracked or bored out ?
  22. didier

    BMW S54 swap

    didier replied to SeanD's topic in Other Engines

    You just have to start in 2nd gear !!eh ! eh !
  23. didier
    Do you think they 'll have to disassemble the rods from the pisons ? Not good at all for press fit mounts , multiple operations on same parts . .....
  24. didier
    Hi, Matt I think you have to look for copper gasket, uncompressible, and you'll be sure not to kill your pistons. many thickness avalaible, it seems 0.27 ( 0.7 mm) is the right size for the quench, that's what i 'll put in mine, larger, and you loose the benefits anti-knock . don't worry with the aluminium cover, 0.10 mm is not a problem with flat surface an sand paper, you can use loctite gasket joint and get no leak at all. Tony was right with the clay test, you can also use chewing gum !!ah :!
  25. didier
    Good job , Matt, you could have made it with epoxy,lighter, stronger, but costy !
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