Rear Turbos... I know, but it was coming anyway :)

[BR427]

Hi to all,does anyone have any experience with the STS rear turbo systems?I was considering possibly getting one.Would it be a good idea?Thanks.

[SUP3R5T0CK]

Have you seen the intercooler setup here?
http://www.airpowersystems.com/ls1/turbo/turbo.htm
maybe they gave or can make a single turbo intercooler for you. I am about to start getting my parts for my twin remote mount setup myself and come across this in search of an intercooler. Good luck with your system.

Sent from my Galaxy S2 (ET4G) using Tapatalk 2

[BR427]

Thanks for the info SUP3R5TOCK.I had a look and it looks good.I am trying to get more info,thanks again,BR427.

[SUP3R5T0CK]

No problem, keep us updated on the project I'd like to see how it goes.

Sent from my Galaxy S2 (E4GT) using Tapatalk 2.

[JoshuaGrooms83]

ug... the army sometimes can really cut into your car time lol been busy training and whatnot. still looking for a a T76 turbo though

[JoshuaGrooms83]

well i bought myself a turbo finaly.
Got myself an ON3 T76 .81 AR journal bearing turbo on the way.

[JoshuaGrooms83]

well got a few items on order
On3 T76 .81 are turbo
tilton oi pump with an oil coolers (got it cheap so what the hey)
4 and 10 an fittings coming 90s and straights
10ft of 4AN stainless braided lines
12ft of 10an stainless braided lines
ls1 oil cap with 10an male built into it
some couplers
4",3.5", and 3" tbolt clamps
check valve with 4an male ends
taped engine oil block off and a 4an fitting for it
hose barb for wastegate boost reference
a turbo trans am PCV check valve (thought id try that for the PCV section)
T4 flange

[JoshuaGrooms83]

heres my new On3 Turbo for my build
installed my -4an oil feed flange with built in .08 restictor. bolted right on no prob.
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[JoshuaGrooms83]

and heres the difference between the T70 t3/t4 .81ar and my new ON3 T76 t4 .81ar turbo.
the T70 internaly is dramatically smaller compared to the T76 lol
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[JoshuaGrooms83]

and some more stuff i got.
Got my feed side ready for lines! oem engine feed flange taped and ready to go, 4an summit check valve, and turbo feed flange all ready to go
got almost all my return stuff here. waiting on the pump and cooler and of course lines but heres some eye candy for yall
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[JoshuaGrooms83]

and got my Lines in the mail today too, so close to build time i can taste it! lol

[JoshuaGrooms83]

well, while waiting around and for payday lol decieded to finally install my catch can
cant post pics for some season, but i will as soon as i can

[JoshuaGrooms83]

well while waiting to pack up my house and move back tot he states now (army stuff) ive been wondering about a few things.
one is im wondering about heads.
im trying to keep my car running near stock while i wait to get my car boosted.
ive heard about goign 317 heads, but hear both pros and cons about using these on boosted engines. how bad will the car "bog" when not in boost?
im considering either the 243/799 heads or the 317s. keeping budget down for other things. im really looking at the 243/799 heads as it will give me a 15ish hp gain from what i keep reading, and it flows better. polish and porting im sure would net more.

[JoshuaGrooms83]

welp, my car gets shipped tomorrow, wont see my red baby for at least a month all my parts are moving as well. just seems like these things take FOREVER to get done when you have a life lol
at least ill be back int he states where everything cost cheaper to ship

[JoshuaGrooms83]

in for an update i suppose
Got my car safe and sound for germany, thank god lol the fuel pump really didnt like sitting in a tank of less then 1/4 tank for 3 months was SCREAMING the whole way home from dallas to el paso lol hence i replaced it imediatly when i got home lol
heres her home on new rims best look so far for me


got a few more items pieced together. getting very close to be able to install it.
Thus far
T76 turbo .96 ar (ON3 sent me the wrong one but they are going to swap it for me once they get .81s in stock lol
Fuel system
60lbs injectors
Racetornics pump and wire harness installed already really easy... trap doored it lol
aeromotive boost referenced FPR and hard line return to the stock return port in the back of the car




oil system
sput gear oil scavnage pump
4an feed
summit chack valve,
10an return
4psi hobbstitch normally open with piezo buzzer for "just incase"
returning to oil pan... decided to not put it in oil fill cap. just in case again
LS6 oil pump


cold side
2.5" pipeing
31x13x3 EMUSA intercooler
EMUSA 50mm BOV
gm 85mm MAF with IAT sensor
5 to 3 wire harness adaptor with IAT plug
2 Bar GM MAP sensor


Hotside
T4 inlet
44mm Vband wastegate
3"in/3"out OBX bullet muffer
exhaust wrap

Interior
Glowshift 3 gauge a pillar pod
glowshift vac/boost guage
glowshift or innovate wideband
glowshift fuel pressure guage

also in my offtime managed to intall some c5 ZR1 17x11 rims with 315s on

trying to source out a few little items along with a 224 or 228 cam and some 317 heads.

[JoshuaGrooms83]

installed 90% of the FPR setup with a return line. i used a 3/8 hardline to return the fuel. cheaper then AN hose.
mind you its just a preliminary mock up. i still gotta clean it up a bit but its in there pretty good.





just gotta hook up the adaptor in the back, remove the shrader valve in the rail, and remove the stock FPR in the tank and then just gotta dial in the pressure.

also was fiddling around with my wastegate while i wait.

and threaded the turbo with a 4 an fitting


also got my EMUSA 31" intercooler finally

[JoshuaGrooms83]

also got a set of 317 head on the way i picked up for reall cheap on ebay. waiting on my turbo inlet pipe and this puppy can get started to be installed

[35th-ANV-SS]

Nice update and progress. In for the next batch of pics and updates.

[JoshuaGrooms83]

thanks, yeah its definitly been a work in progress lol baby steps lol
biggest thing is that im waiting on that inlet turbo pipe i had made for me. should be here anyway now.

i am wishing i went with nylon braid feed and drain lines but of well. i put together my wastegate reference line with 4an fitting and 4 an nylon braided hose and was SOOOOOO much easier then the steel braided line lol those are a bitch and i still gotta do a bunch on them.

had an interesting idea though that i need some input on. got to thinking of the return line and was wondering if a short 1ft 12an line right off the turbo and then back to 10 an into the scavenger pump will act as a mini sump to help return oil when under high load better. any thoughts?

[35th-ANV-SS]

Let me think about that some and I'll post my thoughts tomorrow evening sometime.