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About duffman

  • Rank
    AZ Z Fan


  • Map Location
    Scottsdale, AZ

My Z Cars

  • Zcars Owned
  • About My Cars
    1970 240Z<br /><br />
    2008 Honda Civic Hybrid

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  1. duffman

    WTB Wheel Spacers for 280z 35mm to 45mm

    I have some 25 mm spacers, not quite what you are looking for.
  2. duffman

    DCOE Throttle Spring Testing

    Just bought the volume deal from Spruell, 10 for $30. Unfortunately, the DCOE jets were all sold out some time ago, they said. Sent from my iPhone using Classic Zcar Club mobile
  3. duffman

    1" (25mm) wheel wheel spacers (NEW)

    Are these still for sale? I may be interested, not sure if I want 3/4” or 1” thickness. Sent from my iPhone using Classic Zcar Club mobile
  4. After seeing both cars in person today at BJ, I agree with you, Lonetreesteve!
  5. BJ charges the seller 10% and the buyer 10%, a great arrangement for BJ! I live down here and go every year, will be there today.
  6. duffman

    Triple carb airboxes/heat shields

    Home Depot special!!
  7. duffman

    Triple carb airboxes/heat shields

    Sent from my iPhone using Classic Zcar Club mobile
  8. duffman

    Rota Shakotan Wheel Caps for 240Z

    Never found any great solutions, contemplating having someone make cylinder shapes to fit wheels. Other option is using spacers to push wheels out to make caps fit. Sent from my iPhone using Classic Zcar Club mobile
  9. Could there be any throttle plate issues on carb #2? Maybe the plates are not aligned and one is letting in more air than the other. I noticed a big imbalance on one of my Weber DCOE carbs when I replaced one of the throttle plates due to damage. The other plate let in more air due to leaking. Replaced other plate with a new one, problem solved.
  10. I don't have logging software to graph my results, unfortunately, but I did the same thing you did with consistent runs from 3000 to 5500 rpm on a flat road. I was getting solid readings on my gauge. Sent from my iPhone using Classic Zcar Club mobile
  11. Phoenix, AZ, is about 1100 to 1200 ft above sea level.
  12. I have finally got my triples dialed in on my 70 Z with rebuilt L28, stock cam and flat top pistons. Thanks, Blodi, for posting your experience, it helped me a lot! And a big thanks to 240260280 and Chickenman for all of their help over the last number of months, it helped make sense of these wonderful carbs! Weber DCOE 40 151 current specs: Venturis - 32 mm, auxiliary - 4.5 mm, float needle valve - 1.75 mm, idle jets - 50F9, main jets - 161 (drilled), air corrector jets - 200, pump jet - 50, pump exhaust - 00, emulsion tube - F16 I am running around 12.5 to 13.5 on acceleration, with 14.5 on highway cruise (with AFR gauge). Idles very smooth at 850, but could go lower if I wasn't running AC. Life is good ...
  13. Oh, I had flat top pistons installed when engine rebuilt 10 years ago, so getting about 10 to 1 compression, if that makes any difference.
  14. I have an N42 head/N42 bottom end engine that I added triple Webers to this last year. I am enjoying them immensely. I wanted to port match and unshroud the valves to get best air flow and enhance performance. I believe the N42 head is a good option for headwork, but am wondering if the FI notches on the intake ports will cause any issues on port matching? I wanted input from those of you that know about this much more than I! I appreciate your thoughts. Stephen
  15. duffman

    '74 260 at Mecum Monterey

    Original flattops?

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