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> Rebuiding Inside-out
bkrantz
post Jan 1 2022, 08:58 PM
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OK, OK. You guys are impatient.

Just to tease you a bit, before I tried starting I got out my old vacuum gauge. This is another Sears/Craftsman auto tool. Most of these date from my early days of playing mechanic, in the 70s, 80s, and 90s.


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bkrantz
post Jan 1 2022, 09:00 PM
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I T-ed this into the vacuum line to the Megasquirt ECU.

OK, now we are ready to try starting again.


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bkrantz
post Jan 1 2022, 09:05 PM
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Here we go!

Again, the engine fired up on the first twist of the key.

Running at 2000-3000 RPM, from inside the car:
https://www.youtube.com/watch?v=BuYfm348BrU

Still running at 2000-3000 RPM, from the back:
https://www.youtube.com/watch?v=ThYFaRw3wTM

And after the total of 20 minutes to break in the cam and followers, it drops to a fast idle:
https://www.youtube.com/watch?v=k5J1LzDy-Ig

Everything seems to be generally as expected. The AFR looks good at 2500, and a bit rich at idle.
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bkrantz
post Jan 1 2022, 09:09 PM
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As for the vacuum leak, I am now not sure I had one. Perhaps tightening the intake manifold nuts closed a small leak. But I think I had the throttle stop screws in too far. Without load, it takes very little throttle opening to run at 2500 RPM.
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bkrantz
post Jan 1 2022, 09:11 PM
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What else did I learn today? The cylinder head temp peaked at just under 200F after 15 minutes, with the air temp in the garage (with the doors open) about 35F.


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bkrantz
post Jan 1 2022, 09:14 PM
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But the stock oil temp gauge did not move.


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bkrantz
post Jan 1 2022, 09:14 PM
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At least the voltmeter showed some volts.


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bkrantz
post Jan 1 2022, 09:15 PM
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And the vacuum gauge showed some vacuum. (and very steady)


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bkrantz
post Jan 1 2022, 09:18 PM
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And while the engine was hot, I drained the first batch of oil. I will change the filter and refill with SAE 30 and another dose of Lucas break-in additive.


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Montreal914
post Jan 1 2022, 09:22 PM
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QUOTE(bkrantz @ Jan 1 2022, 07:05 PM) *

Here we go!

Again, the engine fired up on the first twist of the key.

Running at 2000-3000 RPM, from inside the car:
https://www.youtube.com/watch?v=BuYfm348BrU

Still running at 2000-3000 RPM, from the back:
https://www.youtube.com/watch?v=ThYFaRw3wTM

And after the total of 20 minutes to break in the cam and followers, it drops to a fast idle:
https://www.youtube.com/watch?v=k5J1LzDy-Ig

Everything seems to be generally as expected. The AFR looks good at 2500, and a bit rich at idle.



Very exciting times! (IMG:style_emoticons/default/smile.gif)

Youtube videos are private though... (IMG:style_emoticons/default/sad.gif)
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bkrantz
post Jan 1 2022, 10:11 PM
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QUOTE(Montreal914 @ Jan 1 2022, 08:22 PM) *

QUOTE(bkrantz @ Jan 1 2022, 07:05 PM) *

Here we go!

Again, the engine fired up on the first twist of the key.

Running at 2000-3000 RPM, from inside the car:
https://www.youtube.com/watch?v=BuYfm348BrU

Still running at 2000-3000 RPM, from the back:
https://www.youtube.com/watch?v=ThYFaRw3wTM

And after the total of 20 minutes to break in the cam and followers, it drops to a fast idle:
https://www.youtube.com/watch?v=k5J1LzDy-Ig

Everything seems to be generally as expected. The AFR looks good at 2500, and a bit rich at idle.



Very exciting times! (IMG:style_emoticons/default/smile.gif)

Youtube videos are private though... (IMG:style_emoticons/default/sad.gif)


Should be public now.
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djway
post Jan 1 2022, 11:05 PM
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(IMG:style_emoticons/default/beerchug.gif)
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Puebloswatcop
post Jan 2 2022, 08:05 AM
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Aaawwwsome!!! It has been a long journey, but worth the entire trip. Thanks for sharing everything with us Bob. I learned allot along the way, but most of all the inspiration was great. Congratulations. (IMG:style_emoticons/default/beerchug.gif)
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Morph914
post Jan 2 2022, 07:12 PM
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Great to see it running! And to have that moment with your son… priceless! (IMG:style_emoticons/default/beerchug.gif)
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bkrantz
post Jan 2 2022, 08:10 PM
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QUOTE(Morph914 @ Jan 2 2022, 06:12 PM) *

Great to see it running! And to have that moment with your son… priceless! (IMG:style_emoticons/default/beerchug.gif)


Thanks. And I really appreciate my son's interest in car stuff--and his willingness to help. Especially since he has some real skills.
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bkrantz
post Jan 2 2022, 08:15 PM
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I finally got the correct right-angle serial plug adapter. It took 3 tries, since the variations are male/female and "left"/"right". So now I can mount the Megasquirt ECU for real.


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bkrantz
post Jan 2 2022, 08:16 PM
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Here's why I wanted the adapter. The serial connector for the laptop lead sticks out, and keeps the ECU box too far to the left.


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bkrantz
post Jan 2 2022, 08:17 PM
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With the adapter, the box can move an inch to the right, and I can still attach the cable.


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bkrantz
post Jan 2 2022, 08:19 PM
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I got out my trusty 3M adhesive tape, and some spacers for the main panel since I wanted to increase the contact area.


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bkrantz
post Jan 2 2022, 08:21 PM
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So I have the ECU and relay boxes mounted where I want them, at least for now. That means its time to start getting all the cables and wires tidy.


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