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  1. Z

    Thermoquad without vacuum advance port options

    To clarify, I'm not asking a ported vs manifold vacuum question. I'm asking what the difference is between the bottom left port in my image above and a proper distributor vacuum port is. I don't want to assume they work the same even though they both have 0 vacuum at idle.
  2. Z

    Thermoquad without vacuum advance port options

    When I had the vacuum advance canister hooked to manifold vacuum the vehicle ran horribly. It would barely idle once the vacuum line was reconnected after setting the base timing. I tried adjusting timing from base, messed with it a bunch and could not get it to work well. When I switched to a...
  3. Z

    Thermoquad without vacuum advance port options

    I recently rebuilt the thermoquad shown below (9097s model). It does not appear to have a vacuum advance port for my distributor. I initially had my distributor connected to the small port (top right in the photo) on the back of the carb before I realized it was a manifold vacuum port. The car...
  4. Z

    Thermoquad rebuild question

    The current settings are pretty good. The tip in stall is 99% gone I happens maybe once in 30 stops and is a slight hiccup now. The part throttle afr is in the 13s wot is slightly rich in the low 12s. Low load (throttle barely cracked open) cruise is in the 16-17s and small throttle inputs cause...
  5. Z

    Thermoquad rebuild question

    Another question, this carb does not seem to have a vacuum port for my vacuum advance distributor. What do you do in this instance? I originally had it connected at the port off the back side of the carb before I looked at the diagram. That port had full vacuum at idle and made the engine run...
  6. Z

    Thermoquad rebuild question

    Can you explain a little further? I read that the starting point for the hanger adjustment is 1.5 turns from bottom (where the hanger assembly begins to move upwards from the lowest position) There was also some language about you should not have to go more than 2 full turns out, is the goal to...
  7. Z

    Thermoquad rebuild question

    Closer. The stall as soon as you hit the pedal is almost gone. Now an occasional stumble. I seem to have maxed out the adjustment screw on the metering rod hanger. Cruise afr still a bit lean but less so. Now solidly in the 16s Part throttle afrs look good in the mid to upper 13s Wot maybe a...
  8. Z

    Thermoquad rebuild question

    Did some more reading. Seems like I need to adjust the metering rods to get the cruise afr richer. Will get that dialed in a little more and see how everything responds.
  9. Z

    Thermoquad rebuild question

    Made more progress. Counterintuitively (to me) by taking bend out of the accelerator pump linkage, the throttle tip in is much better. Does it make sense that by reducing the bend in that linkage I would even out that lean spot at tip in? Cruise is still 16-18 afr but with the accelerator...
  10. Z

    Thermoquad rebuild question

    Finally got some cooler weather and made some progress. Got the proper throttle cable bracket. Throttle cable now attaches normally. I had to make an extension to connect my 904 single rod linkage to the stock kickdown pivot location on my 340 manifold. Kickdown now works like it should Set...
  11. Z

    Thermoquad rebuild question

    I will report back in the coming days. I need to get some tools to do this effectively. It was part of the reason I called idling a success. I have a compression tester, a timing light with a tach, a vacuum gauge, and what I hope are the proper throttle linkage brackets coming by next weekend so...
  12. Z

    Thermoquad rebuild question

    Ok on the pump plunger. My only concern was it was really dirty. Filled with sand looking crap. I cleaned it pretty good. Seems to seal ok. Stock 73 318. Only mods are full length headers and the 340 intake. Idle is a bit lumpy.
  13. Z

    Thermoquad rebuild question

    Right as I hit the throttle. If I roll on carefully it will come up smoothly but a short part throttle snap result in a quick bog. The rebuild kit I bought did not come with a new accelerator pump plunger so I cleaned up the original leather one. I planned to order a new one along with new...
  14. Z

    Thermoquad rebuild question

    Got it reassembled and installed. It starts and idles. Previously any throttle would immediately kill the engine, now it revs (albeit with a slight bog). It doesn't appear to be leaking fuel into or onto the engine. It's a 9097s unit that I bought from someone who had it in a parts pile for who...
  15. Z

    Thermoquad rebuild question

    These were the answers I was looking for. Thanks. I'm not worried about the aesthetic just the function. Going to work on finishing the cleaning and start reassembly today. Hopefully it works when in done.
  16. Z

    Thermoquad rebuild question

    It's no where near the seats for those seals.
  17. Z

    Thermoquad rebuild question

    I'm watching the rocky road show series that goes through rebuilding a thermoquad. I noticed my float bowl has some damage. Looking for experts to weigh in, seems like areas that won't cause a problem but since I have no experience with these i would prefer to hear from someone who knows better...
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