camshaft/crankshaft trigger pattern - Cobalt SS Network



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Old 06-11-2018, 02:39 PM   #1  
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camshaft/crankshaft trigger pattern

I am trying to go with the AEM computer, but they do not have a system for the cobalt ss. I have a 2007 lsj. does anyone know what the cam/crank trigger pattern is?
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Old 06-12-2018, 09:34 AM   #2  
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crank/cam trigger pattern

the crank pattern is 6+1 and the cam trigger pattern is inevenly spaced.
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Old 06-12-2018, 10:05 AM   #3  
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message TJolley, he installs AEM infinity on cobalts.
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Old 06-12-2018, 11:17 AM   #4  
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how do I make a private message?
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Old 06-12-2018, 01:20 PM   #5  
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https://www.cobaltss.net/forums/members/tjolley-58494/


Under his name there is a button that says send message.
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Old 06-12-2018, 01:21 PM   #6  
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I got it already, I'm new to this forum, ive had my cobalt for a while, but I'm starting to do this where I need other people inputs and experiences
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Old 06-12-2018, 01:30 PM   #7  
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the 6+1 trigger wheel is in the early l61 only. the lsj is a 60-2, and i believe the cam trigger is a 2-2-1-1 pattern, im just not sure of the clocking of the trigger wheels.
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Old 06-12-2018, 01:34 PM   #8  
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all data said its 6+1
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Old 06-12-2018, 04:10 PM   #9  
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no one that I know of supports lsj setup why are you wanting to run a stand alone
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Old 06-12-2018, 06:24 PM   #10  
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Flex fuel. Do you have a better idea on how to get flex fuel beside stand alone. I cant think of any other way.
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Old 06-12-2018, 11:06 PM   #11  
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e67 pcm and dig around on here and on the redline forums there is some info about using the stock pcm and such for flex fuel and hpt and swapping the tune works also
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Old 06-12-2018, 11:24 PM   #12  
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Quote:
Originally Posted by WRXSS_207 View Post
all data said its 6+1
alldata is wrong. in fact, alldata is wrong about a lot of info regarding the lsj cars, much of there info is just copied from the l61.

i can tell you for a factthat the lsj crank trigger is 60-2, or 58x, whatever you prefer to call it.
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Old 06-13-2018, 06:31 AM   #13  
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Does change that cam trigger pattern is uneven and still isnt supported. I would have to run semi-sequential fueling, instead of sequential
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Old 06-13-2018, 09:35 AM   #14  
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Doesn't really help your situation but for future ref this is gm's description

Crankshaft Reluctor Wheel
The crankshaft reluctor wheel is part of the crankshaft. The reluctor wheel consists of 58 teeth and a reference gap. Each tooth on the reluctor wheel is spaced 6 degrees apart with a 12-degree space for the reference gap. The pulse from the reference gap is known as the sync pulse. The sync pulse is used to synchronize the coil firing sequence with the crankshaft position, while the other teeth provide cylinder location during a revolution.

Camshaft Position (CMP) Sensor
The camshaft position (CMP) sensor is triggered by a notched reluctor wheel driven by the camshaft. The CMP sensor provides four signal pulses every camshaft revolution. Each notch, or feature of the reluctor wheel is of a different size which is used to identify the compression stroke of each cylinder and to enable sequential fuel injection. The CMP sensor is connected to the PCM by the following circuits:

A 5-volt circuit
A low reference circuit
A signal circuit
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Old 06-13-2018, 10:14 AM   #15  
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Quote:
Originally Posted by WRXSS_207 View Post
Does change that cam trigger pattern is uneven and still isnt supported. I would have to run semi-sequential fueling, instead of sequential
Talk to trevor, Im pretty sure he got this figured out. If you have facebook, his name is trevor jolley.
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Old 06-13-2018, 10:44 AM   #16  
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If I remember correctly, they mounted their own crank position trigger wheel to the outside of an ATI with an external/aftermarket sensor. As for the cam sensor, I'm not sure
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Old 06-13-2018, 11:22 AM   #17  
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Quote:
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If I remember correctly, they mounted their own crank position trigger wheel to the outside of an ATI with an external/aftermarket sensor. As for the cam sensor, I'm not sure
This is always a viable option, but the LSJ is already 58x, just offset from the other Ecos. Not sure how the AEM setup works for adjusting the pattern.
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Old 06-13-2018, 12:30 PM   #18  
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Quote:
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If I remember correctly, they mounted their own crank position trigger wheel to the outside of an ATI with an external/aftermarket sensor. As for the cam sensor, I'm not sure

They are currently using an external crank trigger wheel but last I talked to Trevor they are working on a cam trigger setup. That's been a while back so I don't know where they are at on it currently. I'm interested in the cam trigger setup as I would like to convert to standalone at some point too.
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Old 06-13-2018, 03:11 PM   #19  
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with AEM trying to figure out a system, read trevors and AEMs conversation on a AEM forum. AEM needs to have demand, 50-100 people need to be interested in it PER YEAR. so I doubt anything will happen. and I private messenged trevor and haven't gotten anything back
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Old 06-13-2018, 03:13 PM   #20  
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Quote:
Originally Posted by WRXSS_207 View Post
with AEM trying to figure out a system, read trevors and AEMs conversation on a AEM forum. AEM needs to have demand, 50-100 people need to be interested in it PER YEAR. so I doubt anything will happen. and I private messenged trevor and haven't gotten anything back

Try messaging him on facebook.
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Old 06-13-2018, 03:22 PM   #21  
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They are currently using an external crank trigger wheel but last I talked to Trevor they are working on a cam trigger setup. That's been a while back so I don't know where they are at on it currently. I'm interested in the cam trigger setup as I would like to convert to standalone at some point too.
me to, but AEM said somewhere I was read that the demand isn't high enough.
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Old 06-13-2018, 09:47 PM   #22  
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I know someone is running the cam sensor housing on the intake cam with a mega squirt system
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Old 06-13-2018, 09:49 PM   #23  
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I know someone is running the cam sensor housing on the intake cam with a mega squirt system
tjolley is
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Old 06-13-2018, 11:30 PM   #24  
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im running an external 60-2 trigger on my l61 with a microtech ecm and it works just fine. it doesnt use a cam sensor, and runs in semi sequential mode. i honestly dont feel id be gaining much by going to a fully sequential system.

if your really wanting stand alone on an ecotec with full sequential injection, have a look at a megasquirt 3. it will do everything you can think of, aside from electronic throttle control.
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Old 06-14-2018, 12:21 AM   #25  
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tjolley is
it's not jolley
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