LeonV

Why do you need smog ports? Does NJ smog-test 240Zs? CA does not, the testing cutoff is 1975 and Zs did not have smog ports by that time.

Volk TE37V, of which the Rota Grids are knockoffs.

Air horns don't depend on air turbulence around them for functionality. They work by smoothing out the airflow (reducing flow separation) as air enters the intake. They also perform another function of increasing the effective intake length and altering intake resonance in order to tune the engine's powerband.

I've recently found that it's more accurate to measure lash with the mouse-trap springs removed from the rockers, FWIW.

That's correct. Feel free to PM me if you want more info although as I understand it may not be exactly what you're looking for.

I have a friend in the SF Bay Area looking to sell his 240Z. I believe it's an original 112 Yellow car although it needs a respray. The body looks to be in really good shape, I didn't see any rust during a quick inspection (doesn't mean there isn't any of course). It's a solid base car, although the fenders have been cut and flares installed. PM me if you're interested and I'll connect you guys.

Glad I could help, Jim.

I'm glad you like it! Great job getting it all together.

The hammer and socket method posted above works well.

Planning to finally get one of these by the end of the year, glad to see improvements are being made!

I'd start it and run it through the gears before putting the exhaust on.

Do you still have the emergency switch on the right inner fender? Reconnect your interlock system, fasten the seatbelts, press the emergency switch button, and see if it works.

Thanks! Post up after the float adjustment and test-drive.

I had to sand a chamfer in mine to get them to fit, also using the Energy Suspension kit.

Congrats Julio!

Excellent, looks like we're on the same page. Out of curiosity, what are your jetting specs for the Z and Roadster?

Most Z-cars have so many air-leaks from rust holes, bad weatherstripping, missing grommets, etc. that it probably doesn't matter whether you seal those c-pillar vents or not...

If that is the case, your fuel level is likely at (or over) the brim to the auxiliary venturi passageway. In other words, your float levels are likely too high. Are your air horns wet with fuel after running the engine? Proper float adjustment is done as follows: This is assuming you're using the right side of the rod to dip into the fuel, as pictured. Adjust the floats so that the RIGHT side of the sliding collar is flush or slightly to the left (1mm) of the RIGHT hash mark on the PC rod. That should measure 25mm using the depth gauge on a caliper. Here's how I set my floats: Write down your current float levels as measured with a caliper depth gauge, using the method as described above. Sounds like you're at 23mm. Remove the cover and put it upside-down on a workbench. Using a caliper, measure the distance between the float and the cover when the float tang just touches the needle valve, as shown in the 8.5 dimension in this photo: DO NOT worry about the actual number but do write it down. We're only concerned with the difference. If your floats are too high, you need to increase this measurement by the amount that your floats are off, i.e. this is a 1:1 relationship. For example, if your current float setting is 23mm as measured from the top and we want it to be 25mm, then increase the distance between your float and cover by 2mm. Visualize what this does and you'll understand. That means that if you measured 8.5mm currently, then that needs to be increased to 10.5mm. By setting floats this way, I can usually get them close, if not perfect, in one try. DO NOT be concerned if all three carbs have slightly different measurements between the float and cover. We're only worried about the actual measurement from the jet stack shelf down to the fuel level (with the engine running).

No, sorry. I'm talking about measuring the float level using Keith's tool. It's a clear tube made of polycarbonate with a sliding collar to mark the level. You said, "They are a bit low from the mark on the glass tube" and I want to quantify what you mean. "I can tell you how far the level is from the outside top of the cover to fuel level." - That's the number I was curious about, mine are at 25mm measured from the jet block shelf (as I like to call it) down to the fuel level.

When you check the floats, take a caliper/depth gauge and measure the distance between the bottom (fuel-side) of the clear tube and the collar. If it's 24mm or less, you need to lower your float levels. I run 25mm on mine. 23mm is the height of the aux venturi passageway, as referenced from the float gauge.

I don't see what else an over-pressure condition could have done. You're checking the float levels with the car running, correct? What is the actual measurement? Double-check your sync, not that it's related to fuel pressure.

Have you checked your float levels?

@Jeff G 78

I bet Jeff would be interested, he's in MI... @Jeff G 78

I'd love to grab it but not sure how soon I can be in Davis.