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

stroker lsj build

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Old 06-13-2013, 11:14 AM
  #701  
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Originally Posted by adamwamadam
How tight is it pressed? I would also imagine that would add stability to the key, possibly help prevent breaking the key way
nope
Old 06-13-2013, 11:20 AM
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Enought to heat up the spacer and slide it on
Dont want to press on the crank to much
Old 06-14-2013, 09:38 AM
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Ok so i dropped the rotating assembly off last night.
The shop was so sick. He mainly balances jet engines for for Boeing and Rolls Royce. It was cool to see a big ass jet turbine sitting there. Im looking forward to getting this engine running.
Old 06-15-2013, 12:03 PM
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Went over to balance Technologies last night to see how it all was doing.
Tom was working on my stuff and said it will be ready late today or monday for sure.
Wish i could have taken some pictures but didnt want to disrespect the guy.
So now i will have a spare 2.4 crank if anyone is interested ill post a FS thread after my build is complete.
Old 06-16-2013, 03:04 PM
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Just need to polish it now
Old 06-16-2013, 03:28 PM
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Lookin good. When's the ETA of this project?
Old 06-16-2013, 03:45 PM
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Few weeks.
I could have it done next week if i wanted to but im not in any hurry at all. I work 70-80 hrs a week so not much time at all.
And im building another engine for another car right now also that will be done before the cobalt.
Old 06-16-2013, 03:55 PM
  #708  
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Nice nice. Your lucky you have a good machine shop that works quickly and well.
Old 06-16-2013, 03:57 PM
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Well im doin most of the work my self..lol the only thing I'm having done is getting the block honed.
Old 06-16-2013, 06:29 PM
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Why polish the intake? Thought a port job with the rough surface helped atomize air and fuel in the intake. I have a CNC head but no polish on the intake side. You have done these before just curious your take on it?
Old 06-16-2013, 06:37 PM
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My thoughts
Old 06-16-2013, 06:39 PM
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My thoughts

A rough intake port is more helpful in a carbureted naturally aspirated application.
Most of us here are supercharged or turbocharged and we are fuel injected. Our fuel gets sprayed a third of the way into the port. So I think you're going to get all the atomisation from the turbulence air and the fuel injector. So I would rather have a perfectly smooth intake port.

These are my thoughts from what I have gathered myself.
Old 06-16-2013, 06:48 PM
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Sounds good and makes sense.
Old 06-16-2013, 07:12 PM
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Originally Posted by Tjolley
Yes for now till i get a tvs or turbo....y??
wouldnt you want lower cr pistons if you were going turbo?
Old 06-16-2013, 07:13 PM
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Not necessarily.
Old 06-16-2013, 07:19 PM
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what are you gonna be running for fuel?
Old 06-16-2013, 07:59 PM
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E85
Old 06-17-2013, 12:31 AM
  #718  
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Originally Posted by Tjolley
E85
I love E!
Old 06-17-2013, 09:05 AM
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Originally Posted by RooTBeeR
wouldnt you want lower cr pistons if you were going turbo?

Raising the compression of the engine will alow the engine to make more cylinder pressure with lower boost. And make more power before the turbo or SC comes in.
Old 06-17-2013, 10:20 PM
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Just picked everything up from balance technology it all turned out so sick i can't wait.
He balanced the crank pulley bolt, flywheel bolts, pressure plate bolts. I thought he was crazy wen he said he did all that.
He even balanced the clutch disk and the pressure plate.
Its all balanced within 0.002 inch grams (whatever that means).
Old 06-17-2013, 10:27 PM
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Sounds like he really knows his ****. I'm hoping im not making a mistake by not balancing mine
Old 06-17-2013, 10:30 PM
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My first engine wasn't balanced. It ran fine u just get stuck with all the vibration. Not much more than stock if any.I don't think u will spend as much time above 6000 rpm as i plan to.
Old 06-18-2013, 07:15 AM
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Look at that thing shine
Old 06-18-2013, 02:30 PM
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Valve springs ordered.
All that's left now is to get the block honed
Finish porting the head and clean everything.
Old 06-19-2013, 11:47 PM
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Look wat came.. Desided to go with supertechs 94lb springs.


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