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duffymahoney last won the day on May 9

duffymahoney had the most liked content!

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About duffymahoney

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    Brewery Owner

My Z Cars

  • Zcars Owned
  • About My Cars
    1971 Series 1 barn find.

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  1. duffymahoney

    New Fujitsubo Exhaust System to be Released

    So had a major major issue with my dizzy. Which was retarding the motor with any throttle. Which made timing impossible, it ran crazy lean and sounded lame. That is now fixed. Runs and sounds like a different z. Review 2.0 of the new system. Sounds meaty, but still quiet enough around town, but open her up and she sounds awesome. I am beyond happy with it. I will try to do a youtube video post, I still need to tune the carbs better and take it somewhere where I can rev the motor without upsetting my neighbors.
  2. duffymahoney

    Duffy's 1/71 Series 1 240z build

    I could pull it up. But super easy. It’s just cut back 1/2” from the edge and sewn on the bottom. It keeps the carpets from moving as well.
  3. duffymahoney

    Duffy's 1/71 Series 1 240z build

    I put some holes in my carpet for my straps. I always thought they looked cool!
  4. duffymahoney

    Duffy's 1/71 Series 1 240z build

    Ok ran into tons of issues! First was my vacuum advance was frozen. So I took that apart and cleaned the crap out of it. It's now greased and moves nicely. My biggest issue was the dizzy counter weights have these pins that slide into slots on the ears. Well for some reason the previous owner thought it was smart to not have that hooked up correctly. So everytime you stepped on the gas the timing would retard a lot!! Thus causing so many terrible issues. It's now fixed and working like it should! The engine sounds night and day different! Also go all my carpets bound to mass loaded vinyl. The interior is night and day more quiet.
  5. duffymahoney

    Duffy's 1/71 Series 1 240z build

    This was after a full day of trying to start it. So battery was most like dead. Well hopefully. I will check next time I try and run it. I found my carbs were empty of oil. I don't know why I assumed that the past owner shipped them with oil. So that is my next step. I will also make sure that TDC is 0 on my crank pulley. Then work my way forward from that. But I assume the carbs being out of oil is what was causing my tuning to be so incorrect. Thanks!
  6. duffymahoney

    Duffy's 1/71 Series 1 240z build

    Honestly don’t know! Seems odd for sure. This was cruising at 35 mph. Head lights were on. It’s the stock alternator
  7. duffymahoney

    Duffy's 1/71 Series 1 240z build

    Next is a leak down. I am at worst 8% off on my compression. So for now that is fine, I’m sure the valves need adjusting. I also bought a colortune spark plug (clear spark plug to see combustion color)
  8. duffymahoney

    Duffy's 1/71 Series 1 240z build

    Having some running issues. My vacuum advance wasn’t operating correctly. Took it apart and cleaned it and the breaker plate. It didn’t move freely at all. It’s now moving nicely and lightly greased, vacuum holds fine so it’s good. So It was affecting me tuning my carbs. Then my stupid flow meter broke. I need to send it back. But I also bought a unisync. I am running lean. White spark plugs and intake backfire. I decided to do a compression test numbers aren’t as close as I would like Compression 1-155 2-160 3-162 4-164 5-158 6-153
  9. duffymahoney

    New Fujitsubo Exhaust System to be Released

    My block breathing tube was already cut and a 90 is there. It would clear it fine, maybe 1/2" clearance. I bought a NOS one and will install this week. There wasn't an option for internal diameter. So I got whatever was sold. I assume it's my motor related for the noise. She isn't running correct yet. Also she is small at 2.4:)
  10. duffymahoney

    New Fujitsubo Exhaust System to be Released

    Got it installed. Here is my overall quick review. It's pretty quiet 800-1600 rpms. Almost weirdly quite. I have a bone stock 2.4L so that has something to do with it. Above 3k rpms it starts to sound like a z. But not really throaty. Again that is probably from being a bone stock motor. I will try to take a video and post it. I was hoping for more of the sound people have in videos, but I guess I have no idea what rpm that is at when the rev.
  11. duffymahoney

    Duffy's 1/71 Series 1 240z build

    Well got a ton done and really drove it! I removed the dealer AC unit. I will be modifying a aluminum 280zx mount to use a sanden pump later on. My giant ac pump makes it impossible to get to so many things. It had to go. New fujitsubo (just came out) exhaust is in. Sounds great. My motor is bone stock, so it doesn't sound super beefy, below 2-3k rpms it almost sounds like any other car. But get on it and it opens up. I will try to post a sound clip soon. I was able to use my extra series 1 heat shield, just a few bends and it fits great. The ztheraphy carbs were easy to install and tune. My old ones are all gummed up and I couldn't adjust mixture. My flow meter died, so I still would like to re-tune and mess with timing more. My biggest issue came when I went to start it. I didn't mark on my old dist cap which was #1. Installed wires on the cap in stock location and nothing happened, it wouldn't try, etc.... I had so many new things new so I started with the carbs. Checked fuel, checked, ignition wiring (petronixs 1.5ohm coil, nos ballast and electronic points). Still nothing. I then found TDC and low and behold my dizzy is 2 cylinders off speared into the oil pump. Moved wires (#1 is where 4 should be now) and it fired right up! So now at some point I need to pull the oil pump and fix. First time really driving it. Some harder pulls, some turns etc.. Even stock motor it's a blast to drive. Sort of scary, lots of road noise, but it was awesome! Not a lot of gas fumes, smells, which i am happy about. Engine bay puts off a ton of heat even with the ceramic coating on the header. Next is Sanden pump install, along with a new dryer, lines and evap. Also I am binding mass loaded vinyl to the bottom of my new carpets for some sound damping. Oil pressure is reading low, I really hope it's the sending unit. Motor has good compression (I need to re test, I got a new gauge) and doesn't burn any oil I can see.
  12. duffymahoney

    New Fujitsubo Exhaust System to be Released

    My exhaust says it's " It is only compatible with safety standard conformity product 2 seater exclusive Super EX (510-15037) It is incompatible with original EX Mani and Super EX (510-15036) So I am guessing the only option is 510-1535 and 510-15307. Looks like the 510-1535 is equal length header. Which is pretty awesome.
  13. duffymahoney

    New Fujitsubo Exhaust System to be Released

    I never thought you were going mad. But we know that this header works and was designed around the new system (510-15037) . I can measure but I don't see a point. It couldn't be higher. I think they maxed out the design to a crazy tolerance for tuck. Fitment looks basically identical to the pictures posted. I will be curious to see how the 510-1535 (ex-mani) fits around the steering and su's. I like the look of the newer header ex-mani more then mine, but it wasn't for sale when I ordered mine (at least what fujitsubo told me). Looks like the changed the tubes a lot. Same size tubes in both headers. I would be curious why. Probably some sort of flow improvement I would guess. I also don't see it listed on their site yet (which isn't easy to navigate), I am willing to bet it launches fully June 1st. When the backorder will be done.
  14. duffymahoney

    New Fujitsubo Exhaust System to be Released

    Fitment is awesome. I can’t believe how well it tucks. The header must be correct or at least made for the newer system. Its on and mostly tight. I might tweak it a tiny bit. The exhaust tips are ever so slightly off angle and one more exhaust hanger and it’s done. I tried working from the back forward. Which didn’t work. Then I tried middle forward which didn’t work. Engine back worked great. I love learning from mistakes.
  15. duffymahoney

    New Fujitsubo Exhaust System to be Released

    Do you have it?

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