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Miles last won the day on February 20

Miles had the most liked content!

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About Miles

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    Miles ahead!

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    Sacramento, CA

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  1. Fumes inside car have nothing to do with running rich. Replace the hatch seal and seals around tail lights. If you can find it, use an original Nissan hatch seal. The after market hatch seals don't fit well. MSA may have original Nissan hatch seals.
  2. 1. Better a bit too rich then too lean. 2. Once the SU carb is set up and the car is running ok, leave the carbs alone. 3. If you plan to rebuild the carbs use quality Z Therapy rebuild kits.
  3. http://www.classiczcars.com/forums/topic/47304-1972-float-adjustment/
  4. WIth stock brakes, a 1 in. MC is expected to make the pedal hard to push. Replace the 1 in. MC with the stock 7/8 in. MC and your brakes will be fine.
  5. 1. Download a Factory Service Manual (FSM). Should be available several places at HybridZ. It explains how to work on a Z car. 2. Follow the instructions in the FSM http://www.nicoclub.com/archives/2-write-ups-on-tuning-su-carbs.html This video is for British SU carbs, but basically the same procedure. Also, make sure that the needle moves freely in the seat as you move the float up and down.
  6. https://www.youtube.com/watch?v=y059hdXvVwg https://www.youtube.com/watch?v=SLD_7pNRfbk https://www.youtube.com/watch?v=JOIFJEO7mTM https://www.youtube.com/watch?v=7GRAcqDySog https://www.youtube.com/watch?v=60Bj_2cZQnc
  7. Fuel tank vent / Evap tank / EFI question

    Note that the tank has a bulge on top. When the tank is filled air becomes trapped in that bulge if there is no way for it to escape. If the air can't escape then the gas tank will not be able to be filled all the way. Think of inverting a glass and submerging it in a sink filled with water. The air stays trapped in the glass. Also note that gasoline expands when it gets hot in the summer. In the early 70s the US required that automakers had to capture hydrocarbon fumes/vapors escaping the fuel system. The tank and all of those hoses make up a vapor recovery system. The purpose of the vapor tank and those hoses was to capture the fumes and pass them through a carbon filter and suck them back into the engine to be burned (see your FSM). It also serves as a vapor expansion tank. It is designed as a closed system. The stock gas cap is not vented. The vapor tank collects gas vapor and serves as an expansion tank. As the gas in the tank expands it pushes the fumes/air into the vapor tank. So the reason you connect hose 8 to the filler pipe is so air trapped in the top bulge has somewhere to go as the tank is filled and/or gets pushed out by expanding gas on a hot day. I used fuel injection hose to connect the tank bulge to the filler pipe. So when filling the tank or gas expands on a hot day where will that air go when the vapor tanks is removed? The air wiil escape through a 1/16in to 3/32in drill hole ("breather hole") you make in the gas cap. Do not top off your tank after removing the hoses and the vapor tank because on a hot day gas will expand and will be pushed up into the filler pipe and escape around the gas cap and through the small "breather" hole. Just fill until the hose shuts off. Note that the vacuum switch on the inner fender probably is corroded and plugged up. Every one of those I inspected was completely plugged. If you do remove the hoses, you will have to weld or braze all of the tubes on the gas tank closed. Do not just plug the tubes. Think collision. Of course if you plan on getting the engine swap certified by the California DMV you can't make any of these changes. Recommend that you search the forums for more information before you do any modifications. There are many many posts on this exact subject.
  8. Fuel tank vent / Evap tank / EFI question

    What year Z would help. You will need to keep line 8 or line 7 and route it to where line 5 attaches to the filler neck in the picture below. Look at the picture and you will see why you need to keep the line in addition to venting the tank on hot days.
  9. Turn Signal Issues

    Headlight relay harness built by a HybridZ member (HLS30-08077) and sold by MSA: http://www.thezstore.com/page/TZS/PROD/12-4651 Or buy direct from Dave (HLS30-08077): https://www.datsun-240z-upgrades.net/product-info/ Works!
  10. Turn Signal Issues

    1. What year is your Z? 2. Did you check the fuse panel? 3. Typically, the problem you have is caused by the turn signal and/or the light switch. Many "how to" posts on switch repair here and on the internet. 4. Information: http://woodworkerb.com/home/datsun-240z-rebuild/datsun-240z-multifunction-switches/ https://www.datsun-240z-upgrades.net/services/ https://fiddlingwithzcars.wordpress.com/2012/12/04/turn-signal-repair/ http://www.classiczcars.com/forums/topic/34330-72-240z-turn-signal-stoped-workining/ Rebuild_240Z_combo_switch.pdf
  11. Last weekend I got some needles and the complete bottom seat assemly off a 72 240 that was completely rusted in rotted out including the carbs or at least they looked pretty beat. I have yet to take my carbs out and swap the needles and seats but at least now I have something to try. And now you got me thinking about the Pistons. Google search results: https://www.google.com/search?biw=1536&bih=741&ei=GB5lWof6K8LYjwPRqZmACg&q=240z+su+carb+lean+backfire&oq=240z+su+carb+lean+backfire&gs_l=psy-ab.12...48161.51822.0.54621.
  12. Possible mismatch of clutch parts e.g., 240z - 280Z throughout bearing components. Do a Google search or HybridZ and search for 280Z transmission swaps. Also, this issue has come up before so there should be some info here or at one of the other Z blogs. Check the FSM for a 240Z and 280Z transmission.
  13. HybridZ may be shutting down.

    Member since 2001. The rules are clearly stated for any new member to read. Many don't and then get their feelings hurt when they get caught. Modifying Z cars for performance is what HybridZ is about. Having new forums for 350Z/370Z cars makes sense. Of course, the wise builder will make use of all available information technology.