Add a knock sensor to distributor, GM ESC module MSD 6AL spark timing control HEI wiring diagram EFI
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- čas přidán 17. 07. 2024
- How to add a knock sensor to older engines with distributors to control pinging and detonation. 1983 to 1986 GM ESC 16029011 16042121 and 16048021
Your hand drawn schematic is worth the price of admission. Well done.
Wow, that schematic is a masterpiece! Any chance you could draw one up for me too? I need some new art for my walls, and that would be perfect. Seriously, it's so good it belongs in a frame!
Really good and useful video. The video has a lot of information that is useful for the tuner.
Excellent job, very thorough presentation! I too build my own stuff and fully understand how engines and electronics work and can tell you do to! I’m glad not everyone things you can always hear ping and knock!
This is a great video. I have wanted to to this for a while, now I know what it takes. Thank you very much !!!
What a great video! This is what You-Tube is all about. Thanks for sharing.
Outstanding job of finding and presenting the information. Great job.
This is fantastic info. Thank you for sharing this!
I want to add this mod to my 66 Bonneville. I just put an HEI distributor on it to replace a pertronix that it came with, and this feels like a great next step since it’s pinging like hell
I know I could back off the timing and I have but it makes the car a slug
@clarkinthedark1 Yes, that is exactly why use the knock sensor... keep the timing nice and advanced... and the knock control with retard it only when needed
@@raysoto1969 when you run these, how many degrees base timing do you run? 6, 10, 12°?
@@clarkinthedark1 about 10 degrees
Man them big ol caddy engines ping like crazy it seems. Ive had 2 different 425s, one in a 79 coupe deville and one in a 78 eldorado. The timing was so touchy, on a hot day itd rattle and bang at WOT no matter what i did lol
Nice Thanks!
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Great details! I wonder what that signal looks like that returns to the module from the ESC? It might be possible to build your own module. I would love to see oscilloscope data on that pin under light and heavy ping. One sidenote… The coil Sparks when the ground is released :-)
Yes, I should have said that when you ground a coil and ungrounded it, that's when it sparks haha... oh well. On my old oscilloscope, I didn't see much of a change in wave amplitude when pinging occurred. Only wave timing changed
@@raysoto1969 good to know.
Great explanation, one question , on the Pontiac 301 , if it doesn't work does it prevent from having spark at the spark plugs?
Yes, a bad ESC can cause a no spark situation.
@@raysoto1969 Thank you Ray ! So to bypass if I disconnect the ESC and connect the green and black wire coming out from the distributor it should be good?
@@antonioteolis80 exactly
@@raysoto1969 Thank you Ray ! greatly appreciated , I was stuck on this issue for quite a while . every thing is fine now, you made me understand the operation of the modules.
I was thinking of carbureting a 91 ranger. I was wondering if o could use a ignition module from a carbureted 4.3 mercruiser for timing ?
Yes, if you wire it correctly. Some of the mercruiser ignition modules have timing built into them and will not use mechanical advance. I personally prefer when the distributor controls timing with vacuum and mechanical advance as they can be easily adjusted for performance and fuel economy. I don't think the GM ESC will work with this module, but I haven't done much research on these mercruiser ignition systems.
@@raysoto1969 I was thinking they had timing advance built into them. I don’t know if there is a mechanical/vacuum distributor for the 3.0 ford v6, If you know of one that will work let me know. Then I could just use the regular old 4 pin. I’ve used them many times on 302,s. Once on a rotary engine, and I know another guy that used them on a 428 big block. He put the module inside his air filter housing. Right where the air would enter, to keep it cool.
Thank you for the insightful video!
Question: Do you know a way to connect the ESC to an MSD distributor with only pickup, and an MSD Digital 6AL? If so, can you briefly explain to me how you would connect it? Thank you in advance! Ben, from Switzerland
Do you mean in a distributor that doesn't have mechanical advance?... it will run, but without any advance, it will run less efficiently.
@@raysoto1969 Thanks for the quick reply!
But with mechanical advance, but without ignition module. In fact, it is the MSD CHEVY V8 STREET PRO-BILLET W/VACUUM ADVANCE 8361 distributor.
@bernardsibau8182 The ESC module will not work without a GM ignition module. I've already tried substituting the GM module for the MSD 6AL. The only way I could use the ESC module with an MSD 6AL, was to connect the points input wire from the MSD to the C pin on the GM ignition module.
@@raysoto1969 Faith has understood you: Screw GM Ignition modules externally to a heat sink and connect them to ground etc. Connect the MSD distributor (pickup) to the ESC as shown in the drawing. Feed the white points cable from the MSD 6AL to the GM Ignition module pin C. "Brown" cable also connected to C. Is everything right?
@@bernardsibau8182 Exactly
My curiosity is running this with a typical advance I'd want at higher elevations to make more power in the mountains.. then when I drop down to lower elevations the system will retard timing.. Your thoughts?
Well I do know that you need more advance as you go up in elevation. But this ESC module will not do that. It only retards timing based on the severity of engine knock. You are probably looking for something that will use a barometric pressure sensor to change timing. As far as I know, the only ignition system that can do that automatically is a modern coil on plug ecm that utilizes a barometric sensor.
@@raysoto1969 I was thinking of just advancing the timing for a higher elevation, and the rare times I'm at sea level it would retard
@@TrentGustus You could use the 5 pin module that retards timing 5 degrees when the skinny pin is grounded... and then you could unground it when you are at higher elevation. Part number DR137
@@raysoto1969 maybe a barometric sensor with an adjustable setting that trips a relay
@@TrentGustus Good idea 💡