Recent content by gbvona

  1. gbvona

    Odd temp gauge behavior - NADA V8

    As engine warms up, the temp needle rises to spang in the middle of the scale. After a few minutes of driving, it rises to very near to the top (somewhat, but not entirely, in the red), sits there for a minute or so, then marches back down to sit in the middle. Repeats every 4-5 minutes. New...
  2. gbvona

    Needles and mixture - 3.9 l

    After considerable fiddling, I am reasonably happy with the BBW needles given my configuration (3.9l with stage 2 cam). It runs at around 14 air/fuel ratio under normal cruise. gbvona
  3. gbvona

    P6 3500S NADA water pump adaptation

    Brief update, I did get the "nose" (pulley flange) off of the old NADA water pump. I tried threading a zerk grease fitting onto the blind end and forcing it off with a grease gun, but there was simply not enough pressure to do so. In the end, I removed everything on the pump shaft (which...
  4. gbvona

    Needles and mixture - 3.9 l

    Thanks for the reply. Yep, got the SU needle book. I was in England in September (Goodwood, Yeah!!) and tried to get needles from SU directly--they were at both the Beaulieu Autojumble and Goodwood -- but they did not have any of the ones I wanted to try in stock. I just ordered pairs of BAW...
  5. gbvona

    Needles and mixture - 3.9 l

    I appreciate your strategy of using rolling roads. The practical challenge is that I live in Tennessee -- we have no shortage of rolling roads (think NASCAR wannabes), but no one here has the slightest notion of what an SU is. If it ain't a Holley, it ain't a carbureter. There is no easy way...
  6. gbvona

    Needles and mixture - 3.9 l

    Long story short, I currently have a Range Rover 3.9l engine (9.25 CR, Crower Stage 2 cam) in my 1971 NADA P6. I am using two SU HIF6's for carbs. I made a few earlier postings documenting adventures with tuning. The leap forward that I report here comes after acquisition of an Innovate...
  7. gbvona

    Heater does not work, AIR CON Model

    The NADA models have a very complex thermostatically-controlled heating system that involves a vacuum-operated water valve that also senses the core temperature to regulate water flow. I imagine the design life of this unit was about ten years. Do the math. I would first thing check for...
  8. gbvona

    Sticky rear brakes ... yet another inquiry

    1971 3500S NADA dual system. Brakes were completely redone about a year ago, cleaned, lubed, new rubber everywhere etc. Symptom is after braking the car feels like the brakes are dragging--it moves from a stop with the accelerator, but slowly. After a few seconds things even out. Or, when...
  9. gbvona

    HIF6 carbs needle advice, please

    Just my tuppence... 3.9L engine, Crower stage 2 cam, standard 3.9L heads, HIF6s. Original needles were BBVs. Not good. "Any of the HIF type needles" doesn't always work. Much messing about with timing and needles, settling for the moment on BACs. It's MUCH snappier. Will drive awhile and...
  10. gbvona

    HIF6 needle setting puzzle

    The pistons in my HIF6 carbs (AUD623) have a rectangular slot milled in the bottom of the piston, about 2 mm deep, 4 mm wide and parallel to the airflow. It goes all the way across the piston. However, there is a steel insert in the middle of the piston (into which the needle bush is fit) the...
  11. gbvona

    PAS pump leak

    Updating a very long process (I'm the guy who started the thread). Since my ride was about 47 years old I resolved to change out all of the power steering hoses, in the even that they could be contributing to the leak. Easy to say, not so simple to do (1971 NADA 3500S, lhd). Material is...
  12. gbvona

    BW35 leakage from new pan gasket

    Update on a very long process. I fiddled with the pan literally for days. Ended up putting it on my milling machine table and using a dial indicator to indicate flat. Got it within about 0.005" (more or less). Remounted. Leaked. Got a rubber gasket from WINS. Mounted it, about 8 ft-lbs of...
  13. gbvona

    P6 3500S NADA water pump adaptation

    My old water pump (1971 3500S NADA) leaks. Yep, it's the one with the viscous coupling and big fan (AC, y'know, which is long dead). I have a replacement pump with the big aluminium casting on the nose. The two pumps look essentially the same, though it appears that the new one has a slightly...
  14. gbvona

    Grille badge/front motif attachment?

    First thing I tried. The prongs have small teeth, but they no longer bite into the mounting rods, probably blunted in the removal process. The rods are an odd size, 0.197" or so. Too big (or small) to thread and the push-on (speed) nuts I have found so far do not fit. gbvona
  15. gbvona

    Grille badge/front motif attachment?

    1971 NADA 3500S--had to replace my PAS lines, which entails removing the entire front from the car. During this process I removed the (tatty but more or less intact) front motif by gently prising a couple of u-shaped metal grabbers from the (smooth, about 0.2") posts. The operation being now...
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