sblake01

I don't know. In twenty years of working off and on with L24E and L28E engines, I've never known a fuel pressure regulator to go bad. But the electronic bits; thermotime switch, air pressure reg., water temp sensor, thermal transmitter, cold start valve, etc., I alwas keep at least a couple of each on hand tested and ready to go.

No body is venting on you. I believe his question was would he notice the hp freed up by removing the stock fan. I was simply trying to answer that. Rather than sticking things in the radiator, drilling holes for senders, tie wrapping senders to your radiator hose, relying on a manual switch Id prefer to let the car work the way it was designed to. Cars that overheat because of the fan clutch either have an inferior aftermarket one or a malufunctioning factory one. Just my opinion based on my experiences not a rant or a vent. Sorry you took it that way.

Somehow, I think you are talking about the AIR regulator. If you disconnect the hose from the FUEL pressure regulator, the car shouldn't run at all. If you suspect a fuel pressure problem, perform the fuel pressure test outlined in the FSM. The problem you described at the beginning of this thread leads me to the thermotime switch/cold start valve combination. Have you checked those yet?

I thought Patrols had the old 4 litre 'P motor.' LD28s are from the early 80s RWD Diesel Maximas. I think the Australian public was fortunate enough to not have those offered.

I have known people to drill and tap a hole in the water outlet and mount the temp sender for their electric fan there. Seems to me if you have the skills to do it that way it would be much more accurate.

If you haven't bought one yet, I looked through my stuff and found 4 of them. I've just finished testing them on my car and they all work. If you want one let me know. I'll let you have it for postage.

Check you Air Regulator. Sometimes called an 'Auxiliary Air Valve'. If it was originally a California car, also check the Altitude Switch.

I went back to the Rialto, Ca. Ecology and all I found were two upside down L28D's with the cranks gone. Oh, well. I'll keep looking.

I read somewhere that the transition to having a sway bar was 2/73. Based on Carl and ChrisA's response, it must have been sometime druing the month. That's why it's so hard to pin down some of these things. So many things about the early cars are not clear cut.

I have a setup to convert LP's to CD and lots of LP's. What are you missing?

Turbo and F.I. The real fun is about to begin!

If it take a few times to start up especially when it's cold you need to look into the thermotime switch/cold start valve combination.

daddz, I just can't break it down that way. What I like to listen to doesn't change because I'm in a Vette or a Z or a pickup truck. I don't need to assimilate what was happening then, I was there! I would enjoy Burbeck (Paul Desmond) in a 350z as much as I would in a Duesenberg. But I wouldn't enjoy 50cent in either.

I understand your meaning when you say that. But, you'll always get argument from someone. I use the stock fan/clutch on both my cars and a 180 deg thermostat. I live in SoCal. No overheating problems. You have to make sure you have the correct clutch. Nissan used Atsugi fan clutches. In some cases they used Ampco fan clutches. Those are the only ones I would ever use. Under no circumstances would I use one from Autozone, Kragen, Pep Boys, etc. I'm sure the Datsun Engineers wouldn't have put a device on their vehicles if it didn't perform properly. Remember these parts, if original, are 20 to 30+ years old. New ones or at least properly working ones do work. As far as the 10% hp increase thing, I'm not driving a race car so what good is that?

I, personally, wouldn't install just one piston but I have seen it done and working. Make sure it's the same piston as you already have in the other 5 cyl. Don't get the P90 head unless you want to lower you compression. Look for a P79 like Keith suggested. If your head (N42) is okay I'd use it since you wouldn't really notice much difference without other modifications.

You've changed carbs and you've even changed engines! I would stop blaming either at this point. Get back to basics. Fuel, spark, etc. There are no 'phantom' issues. Everything has a cause. You have changed a lot of things around on that car and the more you change the harder it becomes to diagnose. It sounds to me like it's ignition related but like I said with so many changes, I would go back to basics and try to eliminate the possible causes one by one.

AFAIK, the Pinto did come out in 71. I had one. Their recall and subsequent repair was to put a plasic shield behind the tank. In further tests, the shield also burned in the explosion.

If you're going to change the ignition relay, I would go to a self service junkyard and get a couple of them from there. I say a couple because that chances of them both being bad are slim. They'll be cheap because they have no clue what they are. Try them to make sure that is your problem. That will save you from paying Nissan's price if the problem turns out to be elsewhere.

Is your 79 ZX f.i. or carbs? I only ask because I don't know at which point the Aussie cars became f.i.

Two things jump out at me in that ad. The Holley 4bbl conversion and the AC 'needs recharge'. When I'm looking at a car to buy and the seller tells me that, I wonder why, if it was that simple, that he didn't have it done. If that's all it would take for the AC to work, working AC would be a selling point.

daddz, I really can't break the music down by the car I'm driving. The car isn't listening to it, I am. Since I was born in 1950, my musical influence would be basically the 60s and 70s. I like pretty much anything from those eras. I get somewhat selective when you start talking about music from the 80s, 90s, and 2K. I don't like rap/hip hop or anything that even resembles it. Drinking and driving or for that matter drinking alcohol at all has no appeal to me. (The 'Deacon Blues' comment) But back to the original statement, remember this was about a car that hit the scene at the onset of the 70s.

I guess we haven't established what kind or year Z he owns.

Chris, that car has severe rust issues. IMO it would take way too much money and time to bring that car back.