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SloBalt Rider: LSJ GT3071R Turbo Swap

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Old 03-29-2009, 06:32 PM
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thank you black always appreciate your input. problem is everything is allready ordered and on its way except on a couple of things.

on the injector and pump, i thought id be high in the Duty cycle? no? are my 60's capible of flow for 380hp? i was just trying to be safe and alittle overkill and the return style, trying to prevent going lean

i dont have the cash for getting the head ported. will do down the road.

on the clutch. well its here lol

on the CAT i was trying to quiet her down a little and pass "some" laws here is terrible new york

on the vulcan manifold.. am i going to run into problems? is there a problem with it? cuase i dont have the cash for the equal length doing what i can)

sorry i did mean the rotated mounts, and the axels are here as well

as for the tires.. the those RT -615's are made by BF Goodrich correct?

and do you got a price on those dunlop direzza's?

thx again hit me back when you can
Old 03-29-2009, 06:35 PM
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i would also like to know about the synapse BOV because ive read good reviews about them and you say its not efficient enough for big power? i would just like to hear your opinion on it
Old 03-29-2009, 06:40 PM
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One thing i know for a fact, it's gonna be a tight fit with the log mani and that turbo, i think it's been done, just tight, between the firewall and the turbo. Also the equal length will help with spool times, however it puts the turbo very low in the engine compartment. check mine out, https://www.cobaltss.net/forums/2-2l-l61-performance-tech-45/just-another-2-2l-going-turbo-thread-163351/
Old 03-29-2009, 06:55 PM
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Originally Posted by SloBaLt RiDeR
thank you black always appreciate your input. problem is everything is allready ordered and on its way except on a couple of things.

on the injector and pump, i thought id be high in the Duty cycle? no? are my 60's capible of flow for 380hp? i was just trying to be safe and alittle overkill and the return style, trying to prevent going lean
get the rsfs its just safer and more room for upgrades...

i dont have the cash for getting the head ported. will do down the road. pm me about this...

on the clutch. well its here lol

on the CAT i was trying to quiet her down a little and pass "some" laws here is terrible new york ditch it there are ways around NYS inspections...

on the vulcan manifold.. am i going to run into problems? is there a problem with it? cuase i dont have the cash for the equal length doing what i can)

sorry i did mean the rotated mounts, and the axels are here as well

as for the tires.. the those RT -615's are made by BF Goodrich correct? Nope falken

and do you got a price on those dunlop direzza's?

thx again hit me back when you can
Make it rain.......
Old 03-29-2009, 07:29 PM
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There is nothing wrong with the Synapse BOV.
Old 03-29-2009, 10:55 PM
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Originally Posted by VeNoM0713
i would also like to know about the synapse BOV because ive read good reviews about them and you say its not efficient enough for big power? i would just like to hear your opinion on it
its "vent" is about .5 ID thus limiting flow area.

if you look at the big boys, Tial for example, there's a huge amount of flow area thus it evac's the system quickly.

on the smaller units, like the synapse, you'll end up with more pressurized air left in the system when you grab the next gear. thus possibly stalling the compressor.
Old 03-30-2009, 04:01 PM
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^^good to kno, ill keep that in mind and i hope i dont run into that problem.
Old 03-30-2009, 04:29 PM
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i have the 160 thermostat, i think it was pointless as well. car runs at 167 all the time. didnt notice anything good or bad from it.
Old 03-30-2009, 07:27 PM
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"on the injector and pump, i thought id be high in the Duty cycle? no? are my 60's capible of flow for 380hp? i was just trying to be safe and alittle overkill and the return style, trying to prevent going lean"

What fuel psi are you going to be using for this build? Also how much boost? But I did some quick math 60lb/hr at 80% duty cycle for 380hp. You can increase the fuel pressure to get a bit more flow out of the injectors if you need it, but don't go to 70-75 psi. That could keep your injectors always on, and good bye engine.

Last edited by TheSauce; 03-30-2009 at 10:02 PM.
Old 03-30-2009, 07:30 PM
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Synapse design will empty the charge piping just fine. The key isn't to completely draing the compressed air. If you remove all the compressed air during the shift, you now have to wait for boost to come back.

This is another reason why people put the BOV fairly close to the turbo, to keep it from stalling.
Old 03-31-2009, 12:22 PM
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Originally Posted by TheSauce
"on the injector and pump, i thought id be high in the Duty cycle? no? are my 60's capible of flow for 380hp? i was just trying to be safe and alittle overkill and the return style, trying to prevent going lean"

What fuel psi are you going to be using for this build? Also how much boost? But I did some quick math 60lb/hr at 80% duty cycle for 380hp. You can increase the fuel pressure to get a bit more flow out of the injectors if you need it, but don't go to 70-75 psi. That could keep your injectors always on, and good bye engine.


what ever stock fuel pressure is. iam assuming its 50psi correct. i plan on running at 20 21 pounds of boost, for highway runs and track. and 15 or so for daily driving. how do you calculate the duty cycle? so ill be fine with the 60 lbs injectors?

or should i go with the 79lbs, walbaro 255lph for room to play with?

i also heard the 79lbs are a bitch to tune?

Originally Posted by slowswap
Synapse design will empty the charge piping just fine. The key isn't to completely draing the compressed air. If you remove all the compressed air during the shift, you now have to wait for boost to come back.

This is another reason why people put the BOV fairly close to the turbo, to keep it from stalling.

i might need your guidance on where to put this.. if u could help me

Last edited by SloBaLt RiDeR; 03-31-2009 at 12:22 PM. Reason: Automerged Doublepost
Old 03-31-2009, 12:49 PM
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Originally Posted by SloBaLt RiDeR
i might need your guidance on where to put this.. if u could help me
Fo sho. Let me know whenever.
Old 03-31-2009, 01:46 PM
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i just picked up my synapse BOV, oo shes soo pretty, now waiting on thee other 6grand worth of parts

Originally Posted by hungryhip-ccp
i have the 160 thermostat, i think it was pointless as well. car runs at 167 all the time. didnt notice anything good or bad from it.
just tryin to be safe as possible

what turbo are you running?

Last edited by SloBaLt RiDeR; 03-31-2009 at 01:46 PM. Reason: Automerged Doublepost
Old 03-31-2009, 02:01 PM
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Originally Posted by SloBaLt RiDeR
i just picked up my synapse BOV, oo shes soo pretty, now waiting on thee other 6grand worth of parts



just tryin to be safe as possible

what turbo are you running?
hahn's super 20g td-06 internally gated. good to 500hp its a hybrid performs like a dbb, but is journal, can support big numbers for being fully spooled to 24psi by 3500rpm
Old 03-31-2009, 02:09 PM
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i thought we couldnt handle more than 22.85 psi, before the maf went nuts, right?
Old 03-31-2009, 02:26 PM
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the ecu doesent have the ability to read anything over 22.5 psi or 2.5 bar but it doesent mean you cant go past it it just means that the car uses the last value in the table for reference you can not tune higher than 22.5psi


i spike at 24 and settle to 22.5


honestly iv spiked almost 30 before
Old 03-31-2009, 02:26 PM
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Originally Posted by SloBaLt RiDeR
i thought we couldnt handle more than 22.85 psi, before the maf went nuts, right?
MAF reads air flow not pressure. A GT42r would probably max it at like 12 psi where as a 20g will max it at a much higher PSI. It's about air volume not pressure.
Old 03-31-2009, 02:27 PM
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mainly what happens at levels that high is people run out of maf which throws you into limp mode... it has nothing to due with psi
Old 03-31-2009, 03:25 PM
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30 wow, is your motor built further than waht i have done?

Originally Posted by slowswap
MAF reads air flow not pressure. A GT42r would probably max it at like 12 psi where as a 20g will max it at a much higher PSI. It's about air volume not pressure.
ic, thank u for the clarification, still learning this stuff

Last edited by SloBaLt RiDeR; 03-31-2009 at 03:25 PM. Reason: Automerged Doublepost
Old 03-31-2009, 04:02 PM
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um no its actually exactly the same minus the 77's in still on stock rod bearings.
Old 03-31-2009, 08:02 PM
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77's ? lol im drawing a blank at the moment. i got new rod bearings.. is that a problem? i thought bearings are bearings?

should i get the neutral balance shafts?

Last edited by SloBaLt RiDeR; 03-31-2009 at 08:02 PM. Reason: Automerged Doublepost
Old 04-01-2009, 09:35 AM
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anyone else running the gt3071r? how they like it? problems with it?
Old 04-01-2009, 10:32 AM
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It's good if you plan on upping the boost later on. If you only ever plan on running 400 whp and no more, you would probably love the slightly faster spool of a GT2876r. The GT2876r is what Synapse uses to make 370-380 whp on the LNF. I'd imagine It would surfice the same on the LSJ. If you plan to go over over 400, go with the GT3071r.
Old 04-01-2009, 02:14 PM
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Originally Posted by SloBaLt RiDeR
77's ? lol im drawing a blank at the moment. i got new rod bearings.. is that a problem? i thought bearings are bearings?

should i get the neutral balance shafts?
those bearings are gonna be to tight and your gonna need to get the crank sized to them. polished at least. thats why i kept the stockers...


yes you should def get the balance shaft delete by "level zero motorsports"

if the motor is out do it!

that turbo will be fine. little laggy for the goal/application but it will do.

no-one like mitsu's or what........


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H TU-3100 $899.99

http://www.turbosystem.com/ProjectVe...Components.htm

Last edited by hungryhip-ccp; 04-01-2009 at 02:14 PM. Reason: Automerged Doublepost
Old 04-01-2009, 02:24 PM
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damn gonna be some quick cobalts in western NY this summer. Cant wait to see this


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