camshaft/crankshaft trigger pattern - Cobalt SS Network

Go Back  Cobalt SS Network > Engine Technical Discussion > 2.0L LSJ Performance Tech
camshaft/crankshaft trigger pattern >

camshaft/crankshaft trigger pattern

2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

camshaft/crankshaft trigger pattern

Reply

 
 
 
Old 06-11-2018, 03:39 PM
  #1  
New Member
Thread Starter
 
Join Date: 06-11-18
Location: stafford, VA
Posts: 12
Thanked 0 Times in 0 Posts
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?
WRXSS_207 is offline  
Reply With Quote
Old 06-12-2018, 10:34 AM
  #2  
New Member
Thread Starter
 
Join Date: 06-11-18
Location: stafford, VA
Posts: 12
Thanked 0 Times in 0 Posts
crank/cam trigger pattern

the crank pattern is 6+1 and the cam trigger pattern is inevenly spaced.
WRXSS_207 is offline  
Reply With Quote
Old 06-12-2018, 11:05 AM
  #3  
Moderator
Platinum Member
Moderator
iTrader: (1)
 
Slowbalt2000's Avatar
 
Join Date: 05-15-11
Location: Livonia, MI
Posts: 23,716
Thanked 269 Times in 246 Posts
message TJolley, he installs AEM infinity on cobalts.
Slowbalt2000 is offline  
Reply With Quote
Old 06-12-2018, 12:17 PM
  #4  
New Member
Thread Starter
 
Join Date: 06-11-18
Location: stafford, VA
Posts: 12
Thanked 0 Times in 0 Posts
how do I make a private message?
WRXSS_207 is offline  
Reply With Quote
Old 06-12-2018, 02:20 PM
  #5  
Moderator
Platinum Member
Moderator
iTrader: (1)
 
Slowbalt2000's Avatar
 
Join Date: 05-15-11
Location: Livonia, MI
Posts: 23,716
Thanked 269 Times in 246 Posts
https://www.cobaltss.net/forums/members/tjolley-58494/


Under his name there is a button that says send message.
Slowbalt2000 is offline  
Reply With Quote
Old 06-12-2018, 02:21 PM
  #6  
New Member
Thread Starter
 
Join Date: 06-11-18
Location: stafford, VA
Posts: 12
Thanked 0 Times in 0 Posts
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
WRXSS_207 is offline  
Reply With Quote
Old 06-12-2018, 02:30 PM
  #7  
Senior Member
iTrader: (1)
 
Join Date: 10-27-07
Location: Abbotsford BC, Canada
Posts: 5,287
Thanked 149 Times in 133 Posts
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.
Sharkey is offline  
Reply With Quote
Old 06-12-2018, 02:34 PM
  #8  
New Member
Thread Starter
 
Join Date: 06-11-18
Location: stafford, VA
Posts: 12
Thanked 0 Times in 0 Posts
all data said its 6+1
WRXSS_207 is offline  
Reply With Quote
Old 06-12-2018, 05:10 PM
  #9  
Super Moderator
iTrader: (3)
 
mrbelvedere's Avatar
 
Join Date: 12-04-05
Location: KY
Posts: 8,125
Thanked 45 Times in 39 Posts
no one that I know of supports lsj setup why are you wanting to run a stand alone
mrbelvedere is offline  
Reply With Quote
Old 06-12-2018, 07:24 PM
  #10  
New Member
Thread Starter
 
Join Date: 06-11-18
Location: stafford, VA
Posts: 12
Thanked 0 Times in 0 Posts
Flex fuel. Do you have a better idea on how to get flex fuel beside stand alone. I can’t think of any other way.
WRXSS_207 is offline  
Reply With Quote
Old 06-13-2018, 12:06 AM
  #11  
Super Moderator
iTrader: (3)
 
mrbelvedere's Avatar
 
Join Date: 12-04-05
Location: KY
Posts: 8,125
Thanked 45 Times in 39 Posts
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
mrbelvedere is offline  
Reply With Quote
Old 06-13-2018, 12:24 AM
  #12  
Senior Member
iTrader: (1)
 
Join Date: 10-27-07
Location: Abbotsford BC, Canada
Posts: 5,287
Thanked 149 Times in 133 Posts
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.
Sharkey is offline  
Reply With Quote
Old 06-13-2018, 07:31 AM
  #13  
New Member
Thread Starter
 
Join Date: 06-11-18
Location: stafford, VA
Posts: 12
Thanked 0 Times in 0 Posts
Does change that cam trigger pattern is uneven and still isn’t supported. I would have to run semi-sequential fueling, instead of sequential
WRXSS_207 is offline  
Reply With Quote
Old 06-13-2018, 10:35 AM
  #14  
Senior Member
 
Kolt's Avatar
 
Join Date: 04-19-09
Location: Jackson, TN
Posts: 2,862
Thanked 114 Times in 104 Posts
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
Kolt is offline  
Reply With Quote
Old 06-13-2018, 11:14 AM
  #15  
Moderator
Platinum Member
Moderator
iTrader: (1)
 
Slowbalt2000's Avatar
 
Join Date: 05-15-11
Location: Livonia, MI
Posts: 23,716
Thanked 269 Times in 246 Posts
Originally Posted by WRXSS_207 View Post
Does change that cam trigger pattern is uneven and still isn’t 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.
Slowbalt2000 is offline  
Reply With Quote
Old 06-13-2018, 11:44 AM
  #16  
Slobodan Milošević
iTrader: (8)
 
07blackg5's Avatar
 
Join Date: 11-06-07
Location: Serbia
Posts: 5,737
Thanked 186 Times in 152 Posts
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
07blackg5 is offline  
Reply With Quote
Old 06-13-2018, 12:22 PM
  #17  
Moderator
Platinum Member
Moderator
iTrader: (1)
 
Slowbalt2000's Avatar
 
Join Date: 05-15-11
Location: Livonia, MI
Posts: 23,716
Thanked 269 Times in 246 Posts
Originally Posted by 07blackg5 View Post
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.
Slowbalt2000 is offline  
Reply With Quote
Old 06-13-2018, 01:30 PM
  #18  
Senior Member
iTrader: (1)
 
Join Date: 02-03-16
Location: Kansas
Posts: 3,890
Thanked 122 Times in 118 Posts
Originally Posted by 07blackg5 View Post
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.
jdbaugh1 is offline  
Reply With Quote
Old 06-13-2018, 04:11 PM
  #19  
New Member
Thread Starter
 
Join Date: 06-11-18
Location: stafford, VA
Posts: 12
Thanked 0 Times in 0 Posts
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
WRXSS_207 is offline  
Reply With Quote
Old 06-13-2018, 04:13 PM
  #20  
Senior Member
iTrader: (1)
 
Join Date: 02-03-16
Location: Kansas
Posts: 3,890
Thanked 122 Times in 118 Posts
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.
jdbaugh1 is offline  
Reply With Quote
Old 06-13-2018, 04:22 PM
  #21  
New Member
Thread Starter
 
Join Date: 06-11-18
Location: stafford, VA
Posts: 12
Thanked 0 Times in 0 Posts
Originally Posted by jdbaugh1 View Post
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.
WRXSS_207 is offline  
Reply With Quote
Old 06-13-2018, 10:47 PM
  #22  
Super Moderator
iTrader: (3)
 
mrbelvedere's Avatar
 
Join Date: 12-04-05
Location: KY
Posts: 8,125
Thanked 45 Times in 39 Posts
I know someone is running the cam sensor housing on the intake cam with a mega squirt system
mrbelvedere is offline  
Reply With Quote
Old 06-13-2018, 10:49 PM
  #23  
New Member
Thread Starter
 
Join Date: 06-11-18
Location: stafford, VA
Posts: 12
Thanked 0 Times in 0 Posts
Originally Posted by mrbelvedere View Post
I know someone is running the cam sensor housing on the intake cam with a mega squirt system
tjolley is
WRXSS_207 is offline  
Reply With Quote
Old 06-14-2018, 12:30 AM
  #24  
Senior Member
iTrader: (1)
 
Join Date: 10-27-07
Location: Abbotsford BC, Canada
Posts: 5,287
Thanked 149 Times in 133 Posts
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.
Sharkey is offline  
Reply With Quote
Old 06-14-2018, 01:21 AM
  #25  
Super Moderator
iTrader: (3)
 
mrbelvedere's Avatar
 
Join Date: 12-04-05
Location: KY
Posts: 8,125
Thanked 45 Times in 39 Posts
Originally Posted by WRXSS_207 View Post

tjolley is
it's not jolley
mrbelvedere is offline  
Reply With Quote

Thread Tools
Search this Thread
Quick Reply: camshaft/crankshaft trigger pattern


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.