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nmehdikh

240z with L26 - ITBs, EFI, megasquirt

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Started test fitting stuff to check clearances. Also got the fuel pump installed in the tank this weekend. Next weekend is probably going to be running fuel lines, while still procrastinating the mess that is wiring. I also need to get another set of triumph velocity stacks, because the two sets I have are currently mismatched...

IMG_20180211_135706.thumb.jpg.c074ef239a7b76a66cd16ec4a66df4be.jpg

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I got a couple questions for you guys.

1) Since I'm going to be running LS coils, what kind of spark plugs should I run and at what gap?

2) Since I rebuild the head and it has a brand new cam, what break-in procedure do you guys recommend? And what oil should I run during break-in?

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Thanks for the info guys. I appreciate it.

This weekend is pretty busy for me so I didn't have much time to work on the car. In the meantime, I finalized the header and intake install and they are on for good. I had to wait for a new gasket that arrived a couple days ago. I also got the thermostat housing on, and the fuel rail and injectors. The throttle bodies are still only on there temporarily.

IMG_20180217_130317.thumb.jpg.e4344c019ea3dbd28b323814a5a29647.jpg

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While I've been doing all this work on the car, I've been in contact with Softopz, and he's been making me a megasquirt harness for my needs. He recently sent me work in progress pics, and has been great to deal with. I'd highly recommend him if you are interested in going the megasquirt route.

 

Here is a link to his thread where he sells harnesses.

 


20180221_064100.jpg.96ff33c7bde2c952fa69d0145f1c172b.thumb.jpg.0e7b71bda4977e8cf083d46d753011c2.jpg20180221_064353.jpg.a425a268a228d5fed63ffed1c69b03cf.thumb.jpg.b80f1470637508530335158020846c05.jpg

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I've been traveling for work the past few weeks so I haven't been able to get much done. But this weekend has been pretty productive.

Got the distributor swapped over to the turbo distributor to give me crank angle and cam position. Got the AC compressor mounted as well.IMG_20180407_145123.thumb.jpg.15f67f3cc7115d3c935bd8b043fdea61.jpg
 

I had to CAD up and mill out a little bracket to adapt the throttle linkage to the factory triumph cable pull.
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Here is the completed linkage and a crappy vertical video
IMG_20180407_145127.thumb.jpg.aed5c9d9c1f24233a7be32b5f64ff0f0.jpg

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Progress has been slow due to the following factors :

  • Finals
  • Finding a new apartment
  • Work travel
  • Graduating from college this week
  • Starting a new job on Monday

But I had some time this afternoon so I made a mount for the coil packs and got that done. There has also been progress on wiring. chassis re-wiring is done. Need to finish up gauges and tie it all in with the engine harness. Slow and steady.

IMG_20180507_145733.thumb.jpg.d66cf7733fd305df8437f74eabf90e47.jpg

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Updates!

1) Got the vintage air unit mounted under the dash and AC lines plumbed to a bulkhead fitting in the firewall.
2) Plumbed heater hoses to the vintage air unit as well
3) Got fuel lines completely finished up and mounted up. Including regulator and tank vents.
4) Started plumbing vacuum lines, about 75% done

In the next couple of weekends I'll probably be finishing up the vacuum lines. Then mounting the radiator, fan, and coolant plumbing.

I also had some time with one of the 3d printers at work, so I modeled up a velocity stack and printed it for some practice. The surface of the print has not been cleaned up at all, hence the left overs from the supports and rough finish.

1.thumb.PNG.7a6f5f28277160265599b1ce7e01b5a3.PNG

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Its been a while since I updated this. Work and grad school really taking up most of my time. But if any of you guys are interested, this crazy idea actually worked. I was able to fire up the car a couple days ago. I wouldn't have been able to do it without the help of softopz or chickenman, if anyone is considering a megasquirt setup, definitely contact them.

Here it is warmed up and idling. I haven't messed with the idle screws on the ITBs at all, nor have I completely figured out my IAC yet, but it manages to maintain idle all the way down at 550 rpm. I did a cold valve adjustment when I put the head on, and rechecked it again after running it for a short bit, but I am still getting a lot of valve train noise. The head was rebuilt since the car last ran, and it now has a isky L-490 cam in it. Isky recommended valve clearance of 0.008 for intake and 0.010 for exhaust.

https://photos.google.com/share/AF1QipN_NSWTqU1tN3p8_JVp7szJaDdhc5ZWN0e7GPRV5N3Po2cQ5dEdTi5KxlpcsvwEbw?key=M1h6WjB6LVFYa1pBNkFkUWpDdy1scnVnZ3RYT3NR
 

Here are some short revs to 3k
https://photos.google.com/share/AF1QipPw4LY1RrPY9tM2cJXfVbCpmwAxgEaBIFc62txmmWP2fCwzQAILc4LDuIZNwGHQ7w?key=akJQbnRiSzdaNFhTU2JCdExZZ2pfQ3h1eTF2a05n

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Awesome!  Just keep at it when you have the time.  For me, it's 10 hour days at work and family life that keep me away from my build, but I just keep at it whenever I can.

Edited by rossman

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