madkaw

RX-7 pump 39$ quiet!!!

Just so you guys know I have been doing something besides being a smart arse on the forums here I have been installing an aftermarket ECU called Megasquirt on my 71. Why you ask, because it's always been about the learning experience for me and the challenges that brings. I enjoy the L series engine and I have done the SU thing, and now the triple carb route, now I want to indulge into performance FI. Maybe-eventually-turbo charging. I am having way too much fun with the NA motor for now, and I would like to FI my L24 and save my pennies for a Rebello. I am going to do this in baby steps so i can still enjoy my ride. This crappy winter has forced the Z indoors, but has allowed time to get one of the biggest steps started on the venture. My goal is to get the ECU wired into the car and running my ignition only. The way I am doing this I will be able to have 2 ignition systems on the car, the original dizzy and a Coil on Plug set up as well. First things first. I bought ready to go ECU and harnesses from DIY. You can buy kits and save a few bucks, but that's more soldering then I want to do and more things to screw up. All this stuff is supported by some great forums and internet manuals to walk you thru everything--BUT--be prepared to study every chance you get. I knew nothing about FI or ECU's and bought a book by Matt Cramer that is about performance FI just to give me a staring point. Depending on your background, this could be a steep learning curve, but very doable with a basic knowledge of mechanics. If anything, this kind of project will force you to be a better mechanic or at least a more knowledgable one! I really appreciate Zfuel in his effort, now I have a better understanding of what he is trying to accomplish. My project maybe a bit different then other that have done MS(megasquirt) in that I am starting with a 1971 model that had no existing FI attributes-a clean slate if you will. Maybe be better or worse then having a FI model. Instead of tracing down old wires and sensors, I am installing all new. Actually, I parted out a 83zxt years ago and kept the main harness and I have been picking stuff off of it for some parts of my build. Besides the initial cost of the ECU and harness, there isn't a lot of cost after that. Sensors and relays are cheap and can be swiped off of junk cars. A good soldering iron and assorted wire terminals, electrical tape and some additional wire and your ready to start. For me it took a long time just to sort out how I was going to run the wires and where to put the ECU-and study, study, study. to be continued..... I was going to add pics but that's not working as of now

That's the way I am wiring my megasquirt ECU now. The (FI)sensors all use the same ground wire(reference) and are tied together at the ECU--which in turn is grounded to the engine block.

http://www.classiczcars.com/forums/open-s30-z-discussions/40902-raw-fuel-smell-fixed.html

Smart guy to keep it a rolling project. Too many Z's don't get finished because the project drags out too long without any fun driving time. Keeping stock brakes in good repair should suffice. I don't think a "new' radiator is needed but taking it to a radiator shop to be flushed and pressure checked would be smart. Especially a 3 core datsun radiator flow REALLY well and will keep that motor cool. Kind of curious if Rebello specifies oil to use or oil with zinc or any othe additives? Hell yeah ENGINE PORN!! Stock ehaust?

Looks good Bo

Brake job for WHOA moments. Suspension up to the task of more power. Driveline in general----U-joints on all drive shafts. Any specs on the motor? CR and cam specs.

Charles, at the $ we are talking I might consider MS2. Then you have versitilty with FI also. Granted, the install will be more work. I'm not real familiar with Megajolt, so I don't have a direct answer for you.

If it's anything like my 96 Impreza, the steering feel is very good on their racks. Not overpowering -just an assist. I have considered that rack change myself. I have an extra front crossmember standing by just for that reason!

Wow- what can I add to that

You already broke forum rules by not including pictures in your first post ...only kidding- but let's see them welcome to CZCC

If you can sandwich the defect between two straight pieces of wood or metal and clamp it down- then apply heat gun

Relay -ONLY

Motor mounts and tranny mount condition?

Maybe I missed it, but did you replave your tranny mount, or atleast inspect it. Like said, driveline vibrations are not uncommon on these cars. I have fought one for the longest time now, but my car is a hybrid, so lots of mixing parts. I just ordered the mentioned measuring tool to recheck my stuff.

I think thats exactly what it does, and it sounds like a great idea. I do believe the dizzy would have to be in optimum working condition to work smoothly enough for this type of control

Thats awesome news for the Z community, and of course for you. I think will be a really attractive option for the FI guys. Hope they sell well and work well too. I was thinking about the day I get the megasquirt to start my car and how exciting it will be, so I undersatnd your elation!!

Woohoo! An event close enough I can attend. Dam, I better get busy on my car.

If my commute didn't involve Indiana winters I would be all over the BRZ, but...

I'm going to need your timing maps soon for my MS!

Oops, he's not selling. I remember when I needed a windshield I went with safety lite glass or something and it was only 150$- that was a few years ago

I have a buddy in Indy that might have a windshield to sell you

Not cheap , but less involved then Megasquirt. Great option for ignition curve tuning if you don't plan on going FI I've had great luck with my ZX dizzy too

Not cheap , but less involved then Megasquirt. Great option for ignition curve tuning if you don't plan on going FI I've had great luck with my ZX dizzy too

I might have one of those boxes laying around. I think this was from a late 73, but I can check the numbers on the box. Just about give it away, since I will never use it. I know it came off a runner, but it's been sitting around forever. PM me if interested, I can check when i get home.