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johnc

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Everything posted by johnc

  1. johnc
    Tokico stopped research and development on shocks for new model vehicles in 2009. They are still manufacturing the existing line of shocks but they production levels are low and they are having distribution problems here in the US.
  2. johnc
    You don't need a tube frame at your power lelvels. A welded in roll bar with a vertical brace down from the diagonal/harness bar to the trans tunnel helps a bunch - especially if you add a layer of sheet metal around the tunnel to rear bulkhead connection. Also add full length subframe connectors.
  3. johnc
    A lot also depends on the diff you're running. With the Vlsd you're better off running the rear springing softer then the front. The Vlsd does go open or you get a very uneven torque distribution if the inside rear wheel gets very light.
  4. johnc
    Swap the springs front to back and keep the rear bar hooked up for now. You want the car to feel loose mid corner and on corner exit. These cars are steered with the throttle at the limit. From your posts it appears you haven't got it sideways, much less spun. These cars handle best with the back end out a bit it a four wheel drift. I suggest you get used to that knife edge feeling because its the fast way around a track.
  5. johnc
    I tend to prefer more rebound and less compression then the math indicates. So when say a shock is good to some spring rate that's what mean. The math may say more but for the bumpy tracks here on the west coast I prefer more compliance and more platform.
  6. johnc
    If the TC rod bucket is bent it's most likely front a wreck or a hard curb hit.
  7. johnc
    That's a great pic! No deformation of the passenger cell and it looks like the doors will still open and close.
  8. johnc
    There's only so much room for a cage. To get more room you will have to cut out the stock seat mounts and make new ones at floor level. Removing the seat sliders wi also give you another inch. And remember, even with padding, the door hoops will turn a minor accident into a concussion.
  9. johnc
    I went to the 3099s all a round even in stock length strut tubes. They have enough travel, have a 15mm upper mount that fits in the normal COM10 spherical bearing in all the camber plates that fit the S30, and have a better curve then then the 3015/16 for springs over 200 lb. in.
  10. johnc
    FYI... Bret Norgard, who used to be one of the engineers at Bilstien Motorsports, has gone out on his own. He's built a few custom setups for Datsuns: https://m.facebook.com/YAWSPORT?id=130358890313000&refsrc=http%3A%2F%2Fwww.google.com%2F&_rdr
  11. johnc
    Could be. Last set I had done was 18 months ago.
  12. johnc
    With proper fit up and slight bevel you should be able to weld the cage in with a 110 MIG welder. Turn it up all the way and take your time. Practice a lot on the bench with scrap tubing and plate.
  13. johnc
    The P30-0032 are about the only available perfoance option now and they are good to 250 lb. in. and may a little more. They can be easily revalued by Bilstien in Poway, CA for $60 each. The hard part is getting the correct gland nut. The P30 is an inverted shock and require its own specific gland nut. The ones shipped with the shock won't work on the S30 strut tube without some fab.
  14. johnc
    Start with the stock valve lash settings and adjust by how it sounds, runs.
  15. johnc
    That's some pretty poor welding on the roll cage attachment to the strut tower.
  16. johnc
    Looks good.
  17. johnc
    I've done two for customers. The cars were not complete when they left (no interiors except for driver's seat and dash) but most everything else was there. One was 2,610 when done and the other was 2,655. Both were early model year 1972s. I estimate they gained about 300 lbs. from the RB swap which included a R200, CVs, 17" wheels, 4 wheel disc brakes, and sway bars all around for both cars.
  18. johnc
    You crank centerline should be in line with the pinion shaft on the diff. On the S30 that's offset to the passenger side. Shoot a laser from the diff flange.
  19. johnc
    Most likely a tire rubbing on the front valance. Probably the right front.
  20. johnc
    Adjust the rear drum brakes per the FSM and then bleed all 4.
  21. johnc
    And then there was Toyota's amazingly engineered and highly illegal turbo restrictor that got them permanently banned from the WRC. http://forums.beyond.ca/showthread/t-331465.html
  22. johnc
    One of the tricks for a restricted NA engine is to build as large a plenum as possible behind the engine. Another is to build a lower (relative to unrestricted) rpm torque engine with more gears in the trans and tighter ratios. The time between more frequent shifts, some creative plenum, design, and unique valve timing can develop positive pressures in the plenum for brief periods.
  23. johnc
    With your budget you're lolling at a 200ho engine build if you do everything right.
  24. johnc
    What is your budget for this engine build?
  25. johnc
    I built a few for BMW E36 applications. Well worth it but there was room to do it because of the depth of the steering wheel assembly above the column on the BMW. I looked at doing something similar on the S30 and I figured you would need to cut the shaft and the column to get enoight room for the quickener.
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