NewZed

Koni is back. Not sure how they handle lowering, MSA probably knows. They might have springs to match. https://www.thezstore.com/page/TZS/PROD/23-1034 https://www.thezstore.com/page/TZS/PROD/23-1033

Just saw this on ClassicZCars.com. https://whiteheadperformance.com/

Seems like you're solving the puzzle. Not sure what the big silver torpedo shape is at the hose fitting but it looks like your bleed screw is on the bottom. Better swap the calipers before trying to bleed. Bleed screw on top. Where the air bubble will be. Good luck. Whitehead just seems to be living off of their old reputation. I wonder if the original owners are even involved today. Maybe they'll survive, who knows.

What do you mean by this? Here are AZC's own pictures. Looks like some good clues there. Your pictures just show some parts and a tape measure. Not clear what's not fitting. https://arizonazcar.com/brakes

Are you using the factory EFI system? There's a bunch in this sub-forum - https://forums.hybridz.org/forum/90-l-series/

Leaky booster sounds right. The symptoms fit. The IACV setup on your engine was just an attempt to use the computer to control idle. Won't hurt anything to leave it off. You need to start reading about aftermarket engine control. DIYAutotune has some good articles. Also, the Megasquirt pages. https://www.diyautotune.com/support/tech/ https://megasquirt.info/educational/

Yes, that looks like quite the assemblage of parts. I think that I see an idle air control valve (IACV), not sure, I pasted it below. That would be where the idle speed is controlled by computer. If it is completely closed and the idle is still high then the throttle blade bypass (idle air bypass) might be too far open. Or you have vacuum leaks. Look at your AEM software for an IACV setting. You could even just disconnect that hose and block the port to see if idle speed drops. If it doesn't check the throttle body for an idle speed screw. I wonder what that rubber hose is going to do under boost?

Download an FSM and open the Engine Fuel chapter. You'll need all of the parts shown there if you want to go back to stock EFI. You need a lot more parts than what's in that ad. AFM, injectors, sensors, ECU, etc. Or aftermarket engine management. Make a list of what you have now. It's a complex project. Be careful with those aftermarket parts. Many of them have never been tested on a running engine before they're put on the market. They look neat but might not perform.

Here's a link. I'd add a resistor. It's the heat that kills them so you probably haven't done any damage. https://www.onallcylinders.com/2018/04/27/ask-away-jeff-smith-keep-killing-alternators/ " On most late model alternators, if the warning light circuit is not employed, running without that resistance in the circuit will cause the alternator to fail. On the plug-in connector, there are four connections labeled P-L-I/F-S. The connector labeled “L” is the only terminal (of these four) you will need to connect to the vehicle. If you choose to not connect a warning light in line (in series) with the wire terminated at switched (12v) power, then you must include a resistor. Our friends at Powermaster recommend an 82 ohm, 5-watt resistor. You can find these at an electronics store or online through a company called Mouser Electronics for less than $1."

I am not 100% sure that you shouldn't have some resistance on that circuit. You might want to search around bit to be sure. Normally the Lamp offers resistance in to the alternator, and blocks the current coming back. It would be a bummer to overheat the circuit in the alternator and possibly damage it. You could put a resistor in line or even a light to be safe. Or, even better, a fuse. Or both. 10 amp would probably be about right.

It doesn't need to turn off after the engine is running. But you might need to install a diode in the circuit. When the alternator is charging the current flows the other way. That's why the Charge light goes out. It can keep the engine running after you turn the key off because it's feeding the system through the wire. Look up the 240Z alternator swaps to see what I mean. Check the wires in the external regulator plug to see if one of them is switched power. I seem to remember that one of them was, besides the L wire. I had a 76 too. Here are a couple of links showing the diode. If you find a switched power wire at the old plug area you could probably just wire it up there. Or try it without a diode and see what happens. You can always drop the clutch while in gear to kill the engine if it stays running. https://woodworkerb.com/home/datsun-240z-rebuild/datsun-240z-alternator-upgrade/ https://www.classiczcars.com/forums/topic/46888-240z-alternator-upgrade-instructions-w-pictures/

Yes. You'll need to supply switched power to that terminal on the alternator.

There's also the Jeep CAS. One link below, of several. Why are you using the head with the smaller valves? There are several versions of the E88, I think, with different combustion chamber sizes. Make sure you're getting what you want. The E88's popularity comes mostly from when it was an upgrade for L24's. The L28 N42/N47/P79/P90's have the biggest valves of all of them. Valve size = flow. Good luck with the project. http://www.zhome.com/ZCMnL/tech/head.htm

Not really clear what you're suggesting. "Pigtail" really just means "twisty wires that aren't connected to anything". The ZX distributor module has a power wire and a coil negative wire. You can get rid of the ballast resistor. The two wires that might need to be connected (spliced) would be the Start power and the Run power from the ballast resistor. On the ZX module the pins are marked B and C. B is battery power and C is coil negative. So, you can connect Run and Start at the coil positive and run a jumper to B on the module, and then just connect C to coil negative. That will supply the coil and the module with power and the ground for the coil through the C pin. Make sure that the distributor body has a good connection to ground. That is how the module gets its ground. Through the distributor body. Most distributors have a separate black wire that grounds the distributor body, even though the mounting bolts should be enough. And, did you get the pedestal with the distributor? If not, ignition timing will be off. Here's a link with a lot of extra information. It's a good reference but goes way deeper than you need to go. Although you will want to disconnect the old module by the fuse box. Good luck. http://www.atlanticz.ca/zclub/techtips/distributor/index.html

I think I see the reason that Whitehead might take extra long on yours. If they can't keep up with normal diff builds then your special requests are going to add even more time. Good luck.

I'm not getting a clear message out from what you're writing. You said you can't find the pinion bearings but Rockauto has a big selection. You could buy one set of each and still save over Whitehead. Now you say you want Japanese parts. Maybe you're being too picky. Sakura Garage could probably get it done or help you find parts. Or ArizonaZcar. You'd need to know what you want though. Whitehead is just a bad choice. You should cancel your order and start over. https://www.sakuragarage.com/home https://arizonazcar.com/

If you gave a little more info on your location somebody might know of a shop that could do the whole thing for you, in the states.

There's a guy on the forum who helped develop an LSD that should work. Rockauto is a good place to get part numbers and parts. https://www.rockauto.com/en/catalog/nissan,1992,240sx,2.4l+l4,1209013,drivetrain,differential+pinion+bearing+/+race,2264 https://forums.hybridz.org/topic/127169-mfactory-r200-helical-lsd/#comments http://www.teammfactory.com/catalog/mfactory

Get the battery load tested. Sounds like it's dead, like unchangeable, won't hold a charge.

Aren't you guys getting a written receipt when you hand over your money? Most businesses have a simple written agreement that explains how they handle disputes and refunds. You can also dispute a charge on a credit card. I think that if you have a written agreement before you make the payment they will be much more likely to give a refund. If there's no agreement then you're stuck with the time limit on your card or Paypal. Credit cars bill monthly so anything with a six week lead time should not be paid for without a written agreement about timing and refunds. These guys are just taking advantage of people that don't know the ins and outs of buying expensive items. No offense intended. But this applies to more than just Whitehead. It sure does look like Whitehead has gone to the dark side though. And it seems to be working for them. They don't need a good reputation, just a flashy web site. People keep sending them money.

Measure the diameter of the shaft, go to the hardware store, and find a cap that fits and looks good. There are a variety, metal and plastic. https://www.superiorcomponents.com/fasteners/plastic-nut-caps#1 Or find a metal acorn nut and glue it on. https://en.wikipedia.org/wiki/Acorn_nut

Same as any other powerful engine.

Break the ignition system down in to it individual parts and you might get better ideas. The "distributor" is more than just a device to move spark around to the plug wires. It creates a signal to trigger the ignition module. See "variable reluctor" That's what the magnet is for. If there's no signal, there will be no spark. If the ignition module gets the signal but does not make and break the coil circuit then there will be no spark. If the coil circuit is made and broken correctly by the ignition module and trigger system but there's a problem with the coil there will be no spark. As far as the alternator goes it doesn't really come in to play until the engine has started. If the engine cranks normally, at good speed, like it does in your videos, then the battery must have a good charge. The non-moving tach needle is a very important clue. You just have to use it. The tach needle moves when the coil discharges. If it doesn't move it's either broken or the coil is not discharging. In other words the tach needle is moved when spark happens. No needle movement means no spark. Just watch your videos and ask yourself what's going on.

I described all of that in my post. Good stuff in the link also. Common problem. Good luck.

In your videos the starter and battery sound fine. If you watch the tachometer needle it gives a pretty good clue that you're either losing power to the coil and distributor or the ignition module is going bad. The needle does not budge when the engine is not starting, it should be showing the engine's RPM while trying to start. You can test the first possibility, loss of power to the ignition system, by watching a meter attached to the positive lead of the coil with the key on and when you try to start. Voltage should be maintained above about 10 volts. If you don't have power there then focus on that. It would be worthwhile to clean the connections to the coil and ignition module and see if things improve. The old E12-80 and E12-92 modules are known to go bad eventually though. Wouldn't be a surprise if that was the problem, although they usually fail when they get hot. p.s. the magnet under the stator ring is known to break on those distributors also. That might cause a low trigger pulse to the module at starting RPM. That kind of fits your symptoms. It's not obvious, you have to remove the breaker plate and lift the stator ring to see it. Also, one reason the magnet breaks is because the shaft bushings on those distributors wear out allowing the 6 pointed reluctor wheel to contact the stator ring. Here is a good resource showing some of those things. The result of a worn out bushing is shown way down at the bottom. http://www.atlanticz.ca/zclub/techtips/distributorrebuild/index.html