2.1 Timing issues - Cobalt SS Network



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Old 03-18-2017, 04:52 PM   #1
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2.1 Timing issues

Hey everyone I have a 2.1L I'm trying to time. It's from Jeff Reinland and is a 2.4 LEA block with a LNF head on ZZP stage 2 turbo (yes I have the taller lashers) cams and 82# springs. I tried to time the engine to LNF specs seeing that the crank and head are from the LNF. I need some help I know I'm not the only that's done this build. What did you guys time your engine to?

Thanks in advance!
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Old 03-18-2017, 05:21 PM   #2
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stock specs
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Old 03-18-2017, 05:25 PM   #3
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Stock specs for what. The LEA or LNF?
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Old 03-19-2017, 09:51 AM   #4
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You arent very clear anout what you have tried nor about all your parts.


First things first........ do you have an lea long block using the 2.4 crank or lea block with a 2.0 crank. Are you using the lnf cps?

Have you ever timed ecotec motors before? Not trying to be insulting. But this isnt something you a person with little experience shouldnt be doing without professional help.
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Old 03-19-2017, 10:21 AM   #5
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Quote:
Originally Posted by Omiotek View Post
You arent very clear anout what you have tried nor about all your parts.


First things first........ do you have an lea long block using the 2.4 crank or lea block with a 2.0 crank. Are you using the lnf cps?

Have you ever timed ecotec motors before? Not trying to be insulting. But this isnt something you a person with little experience shouldnt be doing without professional help.
I already stated in my first post of this thread that I am using the 2.4 LEA block with the 2.0 LNF crank and 2.0 LNF head. Also, that I tried to time it to the 2.0 LNF. The only thing I did not mention was which CPS I'm using. I'm experienced with building aftermarket engines and timing them, I just have never timed a VVTI motor/Ecotec and am kinda not confident with it at this moment. It's a lot of money I have into this engine, I would be extremely mad at myself if I messed it up at least not asking for help. I also have two Chevy walk through manuals at my disposal for the 2.0 LNF and 2.4 LEA from work. I just don't know which specs to time too.

Last edited by Rota; 03-19-2017 at 10:41 AM.
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Old 03-19-2017, 04:08 PM   #6
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If your using a 2.0 crank, cams and everything else use the 2.0 lnf timing guide.the only thing you technically changed in the rotating assembly is the bore size. Use lnf guides, actuators, timing chain, crank sprocket etc etc. Time the balance shaft chain first and follow with the timing chain

Are you having firing issues where the engine wont fire or are you just trying to get the timing right. I guess thats what i was saying to explain better.

Did you build the motor from the ground up with parts from jeff or did jeff build it all.
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Old 03-20-2017, 06:52 AM   #7
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Quote:
Originally Posted by Omiotek View Post
If your using a 2.0 crank, cams and everything else use the 2.0 lnf timing guide.the only thing you technically changed in the rotating assembly is the bore size. Use lnf guides, actuators, timing chain, crank sprocket etc etc. Time the balance shaft chain first and follow with the timing chain

Are you having firing issues where the engine wont fire or are you just trying to get the timing right. I guess thats what i was saying to explain better.

Did you build the motor from the ground up with parts from jeff or did jeff build it all.

Ok, That's what I figured and the same thing I thought. The only thing that's changing is the bore size of the block. It's not not in the car yet, it's still not fully assembled just hanging out in my room. Ummmm a long story short, I built it ground up with parts from Jeff. Thank you for the help though, I'll go at it again when I'm home from work!
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Old 03-20-2017, 07:27 AM   #8
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Follow the lnf timiing guide in the service manual.

After you time the motor rotate it around by hand until the colored links all line up again. This takes awhile and also at one point it looks like its 1 tooth out but keep going and if you did it right they will line up.
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Old 03-20-2017, 12:31 PM   #9
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Yeah, I think it needs to go around like 15+ times or something like that before it lines up again. Thank you for your helpand guidance though
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