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

Official Turbo LSJ thread!!!

Old 08-18-2011, 05:25 AM
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when you go buy your engine. go with a zzp short block if you wanna keep your head. or a long block with the stage2 cams, cam gears, and springs.
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Old 08-18-2011, 07:37 AM
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Im going to pick up another stock lsj longblock from scranton this weekend, this will be the motor I turbo. I might also pic up this complete lnf drivetrain that's out in jersey, use the bottom end for a built motor and really turn up the boost
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Old 08-18-2011, 08:19 AM
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Originally Posted by EXsoccer1921 View Post
when you go buy your engine. go with a zzp short block if you wanna keep your head. or a long block with the stage2 cams, cam gears, and springs.
that's part of my wish list
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Old 08-18-2011, 08:44 AM
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Originally Posted by mexi_loco View Post
that's part of my wish list
what did you do about the 20gs internal wastegate? you mentioned you have a 38m wastegate. and how reliable is it the external over the internal?
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Old 08-18-2011, 12:01 PM
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I believe external is better for higher boost applications, boost spike and creep
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Old 08-18-2011, 12:06 PM
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i have a 38mm external tial wastegate lol. i love it!
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Old 08-18-2011, 12:27 PM
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Just logging on LSJ turbo 131,000 miles on

Running turbo conversion for 5yrs now. Dyno before last upgrades 325hp. Ported head now, CF hood reverse scoop, larger throttle body, custom intake manifold, and some other little stuff.
question of the day for me is upgrade to 2.2 alternator because when you use 2.0 alternator and delete the old pulley and use a smaller belt you also reverse the direction of the pulley. 2.2 runs the other direction. 2.2 upgrade alternator is also out there as well.
I believe I burned up my 2.0 alternator last night running backwords.
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Old 08-18-2011, 01:01 PM
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Originally Posted by ssyeller View Post
Running turbo conversion for 5yrs now. Dyno before last upgrades 325hp. Ported head now, CF hood reverse scoop, larger throttle body, custom intake manifold, and some other little stuff.
question of the day for me is upgrade to 2.2 alternator because when you use 2.0 alternator and delete the old pulley and use a smaller belt you also reverse the direction of the pulley. 2.2 runs the other direction. 2.2 upgrade alternator is also out there as well.
I believe I burned up my 2.0 alternator last night running backwords.
so are you saying you have been using the 2.0 alt on your turbo swap for 5 years now?
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Old 08-18-2011, 03:33 PM
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Originally Posted by startingline05 View Post
so are you saying you have been using the 2.0 alt on your turbo swap for 5 years now?
yeah you can weld the clutch on the alt and it'll spin backwards and still work. the problem is the fan is now spinning the opposite direction and it's going to burn up the alternator after some period of time
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Old 08-18-2011, 03:39 PM
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The shop in the process of tuning my car (05 lsj turbo) says my pcm is locked. It had GM stage 2 tune on it. Any Ideas? I really don't think it's locked, i'm waiting for their call so they can tell me exactly what it's doing. searching hptuner forums and here as of now. Let me know if you have had any similar issues.

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Old 08-18-2011, 03:59 PM
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it's not locked from GM. they must be doing something wrong
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Old 08-18-2011, 05:27 PM
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Originally Posted by BLAZIN07SS View Post
it's not locked from GM. they must be doing something wrong
This
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Old 08-18-2011, 05:46 PM
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it could be a conflict ion with the vin is that your original pcm?
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Old 08-18-2011, 05:49 PM
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Originally Posted by yellowcobaltss7590 View Post
it could be a conflict ion with the vin is that your original pcm?
Yes it's my original.

Could it be an HPtuners version issue?
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Old 08-18-2011, 05:51 PM
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never mind... yea tuner is doing something wrong...
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Old 08-18-2011, 06:13 PM
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new engine going in monday
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Old 08-18-2011, 06:18 PM
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your going with the zzp block?
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Old 08-18-2011, 06:39 PM
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yeah, its replacing my first zzp block

one car, three engines.. only difference in this one is the valvesprings. going with the gen2 springs they just finished that bind at 520 instead of 450. i waaaas gonna go with the 2.4L forged bottom end instead of another lsj but they're still ironing things out with that combo so maybe next year i'll up it to that.

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Old 08-18-2011, 08:31 PM
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did they ever finish testing the 2.4 stroker ( tech 2.3 lol) motor? and your crazy my dude hook me up with your job
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Old 08-18-2011, 08:52 PM
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they're still working things out afaik. ive been emailing matt and zoomer regularly with input from todd from time to time and i asked them about switching over to the 2.4 bottom end but they said they're still doing r%d on it after ryans engine failure at CED

i also came across a slew of extended wheel studs that everyone thinks are out of stock

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Old 08-18-2011, 09:47 PM
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Originally Posted by jonathan923 View Post
what did you do about the 20gs internal wastegate? you mentioned you have a 38m wastegate. and how reliable is it the external over the internal?
I'm not 100% sure, but I believe my buddy that did all the fab work just welded the internal wg closed. I'm planning on hitting boost up to about 25-30psi (not on stock internals of course). So an external wg is more reliable in that area as someone already mentioned.

Originally Posted by ssyeller View Post
Running turbo conversion for 5yrs now. Dyno before last upgrades 325hp. Ported head now, CF hood reverse scoop, larger throttle body, custom intake manifold, and some other little stuff.
question of the day for me is upgrade to 2.2 alternator because when you use 2.0 alternator and delete the old pulley and use a smaller belt you also reverse the direction of the pulley. 2.2 runs the other direction. 2.2 upgrade alternator is also out there as well.
I believe I burned up my 2.0 alternator last night running backwords.
i just had my 2.0 alternator clutch welded so it could run the opposite direction. No problem on it since. And a 2.2 alternator is bi-directional just so you know.
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Old 08-19-2011, 04:16 AM
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oh so if its bi that means it goes BOTH ways right
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Old 08-19-2011, 09:54 AM
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What are you guys with the s252 et seeing for spool times? Matt M. Told me boost starts coming on good at 3k
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Old 08-19-2011, 11:29 AM
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Am not sure about the spool time on that turbo but i say it has to be somewhere between 3500-4300rpms. Ive seen that turbo and its pretty big but that isnt too bad for spool time either. I can have almost full boost by 3200k but then am on a s20g which is also smaller but it deff gives a kick in the rear once you step on it
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Old 08-19-2011, 01:51 PM
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my billet 262 starts seeing boost around 3400, 10psi at 4600, 23psi at 5100, 31.5psi at 5500
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