What I've been working on... Turbo GP SOLD! - Page 23 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-11-2011, 11:36 PM   #221
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Wow, you didn't spend all that much time with the external trigger!
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Old 02-12-2011, 12:02 AM   #222
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Nope, with the external trigger the ICM does all the work. The problem with the external trigger is that it costs 150 bucks.
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Old 02-12-2011, 12:22 AM   #223
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Any good resale value?
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Old 02-12-2011, 12:34 AM   #224
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Haha, yeah. But that'* not really the point. I'm doing it just because everyone said that it cant be done.


Oh and it'* a lot of fun
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Old 02-12-2011, 12:49 AM   #225
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you know jon.... bob was looking for one recently.
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Old 02-12-2011, 07:20 AM   #226
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Yea, Bob bought one from britishcarconversions.com. Its the same trigger that wot sells by TCE.
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Old 02-15-2011, 02:07 PM   #227
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that'* because it'* owned by Marc, he runs TCE and BCC.
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Old 02-16-2011, 09:51 PM   #228
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Default LX9 Reluctor decoded

I spent a good part of the day researching the LX9 reluctor and it'* events. It is in fact the same reluctor as the LS1 (it has the same pattern).

The question stuck in my mind is whether or not it has the same phasing (is TDC #1 compression stroke).

From this point on, I will assume that it is.

I started by plotting out the entire reluctor in a word processor.


http://i.imgur.com/of4Xv.png



http://i.imgur.com/jOCE1.png

You can see that I found 72 pulses. 72/3 is 24 events. Which means that each event is three pulses. So each cylinder gets 8 events or 24 pulses. For example, the first event for cylinder 1 is low low high or Y. The next event is low high high or X.
I used the following to determine phasing with the CMP sensor.


http://i.imgur.com/fppV8.gif


And this is the result:

http://i.imgur.com/mKtmO.jpg

Just the red markings. Ideally, the picture would be of the other side of the reluctor. I'll try to get a different picture so I can show the reluctor spinning in the correct direction.

This can easily be translated to decode a LS1 reluctor (since they are the same). Instead of each cylinder having 8 events, it has 6. So it would decode:
YXXXXX YXXXYY XXYYYX YXYYY
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Old 02-18-2011, 11:29 PM   #229
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I got started on the wiring today. About 50% done.

Here'* the cam sensor wired in.





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Old 02-19-2011, 08:12 PM   #230
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