82mm Turbo on 347ci !! Lots of questions
08-02-2010, 05:52 AM
#1
82mm Turbo on 347ci !! Lots of questions O.K guys I need all the info I can get before I start ordering stuff I wanna do it right from the 1st time since shipping the parts overseas will cost a lot and take so much time too.
Here is what I have in mind
Engine:
Built 347ci 8:5 comp
(diamond Pistons, Compstar rids,Stock crank,Ported oil pump.....)
Brute Speed FI Cam.
Heads (Still didnt decide AFR 225 72cc or PRC 227 72cc)
Heads Gasket. (What brand)
Stock LS6 Intake and Tb for now.
ARP Studs everywhere.
Comp R lifters.
Pushrods.
660lift dual springs kit.
Dual timing chain.
Stock rocker arms.
Turbo setup will custom be build here (similer to Hinson Supercars single turbo kit)
Thinking about 82 Turbo must be T4 I Dont mind a little lag I want the setup
to reach over 700rwhp on crappy pump gas 13-14psi and close to 900rwhp on C16 race gas I also would like to se 9.7 and over 145mph
I've seen RP26 2.6L get full spool around 5000-5500rpm with those turbo
I'm sure 5.7L Will better.
Planning to spin the car to 6900-7200rpm.
Big front mount Intercooler from my old STS setup.
What BOV Should I use??
Waste Gate??
What turbo do you guys suggest?? brand / A/R ..
3inch downpipe is the limit.
Transmission and rearend:
RPM IV trans (C5 Ratio no ZO6 M12)
Stock rear 3.42 gears until it breaks.
Exedy Twin disc clutch with aluminum flywheel.
couple of suspention parts and brakes.
Of course a good fule system.
The car will be build for highway runs and will see some 1/4 runs since the closest track is 600+ miles away.
Will be tuned by HP Tuner.
Vids of the old setup before I sold the twins
Highest dyno numbers were 557rwhp 530rwtq 9psi and the last owner made
701rwhp 669rwtq on 16psi 109VP Octane
http://www.youtube.com/watch?v=34aMb4Oc-P0
http://www.youtube.com/watch?v=RH9NsHlViao
http://www.youtube.com/watch?v=CTaX3yrZA9A
http://www.youtube.com/watch?v=DkvyHLZYa_Q
PLEASE Guys All comments and help are welcome..
Hussam.
.
Here is what I have in mind
Engine:
Built 347ci 8:5 comp
(diamond Pistons, Compstar rids,Stock crank,Ported oil pump.....)
Brute Speed FI Cam.
Heads (Still didnt decide AFR 225 72cc or PRC 227 72cc)
Heads Gasket. (What brand)
Stock LS6 Intake and Tb for now.
ARP Studs everywhere.
Comp R lifters.
Pushrods.
660lift dual springs kit.
Dual timing chain.
Stock rocker arms.
Turbo setup will custom be build here (similer to Hinson Supercars single turbo kit)
Thinking about 82 Turbo must be T4 I Dont mind a little lag I want the setup
to reach over 700rwhp on crappy pump gas 13-14psi and close to 900rwhp on C16 race gas I also would like to se 9.7 and over 145mph
I've seen RP26 2.6L get full spool around 5000-5500rpm with those turbo
I'm sure 5.7L Will better.
Planning to spin the car to 6900-7200rpm.
Big front mount Intercooler from my old STS setup.
What BOV Should I use??
Waste Gate??
What turbo do you guys suggest?? brand / A/R ..
3inch downpipe is the limit.
Transmission and rearend:
RPM IV trans (C5 Ratio no ZO6 M12)
Stock rear 3.42 gears until it breaks.
Exedy Twin disc clutch with aluminum flywheel.
couple of suspention parts and brakes.
Of course a good fule system.
The car will be build for highway runs and will see some 1/4 runs since the closest track is 600+ miles away.
Will be tuned by HP Tuner.
Vids of the old setup before I sold the twins
Highest dyno numbers were 557rwhp 530rwtq 9psi and the last owner made
701rwhp 669rwtq on 16psi 109VP Octane
http://www.youtube.com/watch?v=34aMb4Oc-P0
http://www.youtube.com/watch?v=RH9NsHlViao
http://www.youtube.com/watch?v=CTaX3yrZA9A
http://www.youtube.com/watch?v=DkvyHLZYa_Q
PLEASE Guys All comments and help are welcome..
Hussam.
.
08-02-2010, 09:06 AM
#5
Yeah the fan got owned.
Thanks man and good luck with yours too keep us posted,
Dont you think PT88 will be a little too much for 347ci M6 ?
It possible after the 3" downpipe I can do 3.5' and put E-cutout after that it will connect to Borla Stingers catback (2.5)
08-02-2010, 09:30 AM
#6
I agree. Couldn't you do something similar to atomicfusion but split the large exhaust pipe into two pipes before the transmission.... ie: out of the turbo with the appropriate size (v-band size), then split into twin pipes just before the tranny, then straight out the back similar to the muffler delete exhaust systems. If i had a front mount, that is what i would do. Great car, i'll be watching the build!
Trending Topics
08-02-2010, 07:18 PM
#8
I agree. Couldn't you do something similar to atomicfusion but split the large exhaust pipe into two pipes before the transmission.... ie: out of the turbo with the appropriate size (v-band size), then split into twin pipes just before the tranny, then straight out the back similar to the muffler delete exhaust systems. If i had a front mount, that is what i would do. Great car, i'll be watching the build!
I'll start another thread when the build begins.
With pics and of course more vids.
Around here we only have 91octane and very hot weather I want to reach 700-750rwhp with lowest boost and timing as possible
Also you never know how soon can I get 400+CI engine
08-05-2010, 08:34 PM
#11
TECH Regular
iTrader: (12)
Join Date: May 2010
Location: Waxahachie, Tx
Posts: 451
Likes: 0
Received 0 Likes
on
0 Posts
Planning to spin the car to 6900-7200rpm.
3inch downpipe is the limit
Stock intake isn't designed for either and that cam is wrong
for the intake and the 75mm S wheel.
-Comp Turbo CT4380 80mm BB 79mm turbine 1.15 T4 -Should have a 3.5-minimum
But it's bigger than a 76HPS.
I just bought a 4380...
3inch downpipe is the limit
Stock intake isn't designed for either and that cam is wrong
for the intake and the 75mm S wheel.
-Comp Turbo CT4380 80mm BB 79mm turbine 1.15 T4 -Should have a 3.5-minimum
But it's bigger than a 76HPS.
I just bought a 4380...
Last edited by TurboS10; 08-19-2010 at 02:46 AM.
08-16-2010, 09:29 PM
#12
Teching In
iTrader: (8)
Join Date: May 2002
Location: Gulfport MS
Posts: 27
Likes: 0
Received 0 Likes
on
0 Posts
The comp turbos are very nice but a lil $$$. Also look into the Precision billet 76gtsh and the PT78. If you had room the Gt47-80 would be crazy!
I agree. You will need more than a 3" downpipe. If not it will choke and you wont make any power. Could you use the 4" oval piping for a down pipe into dual 3" under the car?
I agree. You will need more than a 3" downpipe. If not it will choke and you wont make any power. Could you use the 4" oval piping for a down pipe into dual 3" under the car?
08-16-2010, 09:40 PM
#13
Teching In
iTrader: (8)
Join Date: May 2002
Location: Gulfport MS
Posts: 27
Likes: 0
Received 0 Likes
on
0 Posts
Another thing would be to call Forced Inductions and tell them what your trying to do and your goals and the space limitations. They may also suggest the turbonetics GTK series.
08-16-2010, 10:49 PM
#14
347 is waste if your starting from scratch, do somethign with a 4" bore, and iron will make more power.
9.7s isnt much of a goal, my 76mm 370 went 9.0 in 10 passes, AIM HIGHER
And who the heck is Brute Speed? Get someone that has done top notch performing turbo stuff.
08-17-2010, 01:48 AM
#15
Youll kill something making real power with a 3" downpipe.
347 is waste if your starting from scratch, do somethign with a 4" bore, and iron will make more power.
9.7s isnt much of a goal, my 76mm 370 went 9.0 in 10 passes, AIM HIGHER
And who the heck is Brute Speed? Get someone that has done top notch performing turbo stuff.
347 is waste if your starting from scratch, do somethign with a 4" bore, and iron will make more power.
9.7s isnt much of a goal, my 76mm 370 went 9.0 in 10 passes, AIM HIGHER
And who the heck is Brute Speed? Get someone that has done top notch performing turbo stuff.
here read this Mr. I have 3k posts but dont know brute speed...https://ls1tech.com/forums/forced-in...ute-speed.html
Last edited by Fb0dy0nly; 08-17-2010 at 01:53 AM.
08-17-2010, 08:42 AM
#16
I have a GT-88 from Jose on my 347. It's pretty lazy up to about 12 lbs. The controllers maxed out right now at 14.5-15lbs. The jump from 12-15 was pretty awesome as Jose says this thing doesn't really get efficient untill 14-15 lbs...cant wait to put more boost down it and make some real power.
08-17-2010, 08:52 AM
#17
TECH Regular
iTrader: (12)
Join Date: Mar 2003
Location: Hershey, PA
Posts: 453
Likes: 0
Received 0 Likes
on
0 Posts
You may wanna shy away from the Comp R lifters. They were a PIA to setup, they need a VERY VERY tight tolerance on the preload. Do a search it's something crazy like .008-.002.
I have mine set at .010 and that is w/ some shims under the Yella Terra pedastals. The shims centered my tip over the valve stem and helped get the right preload.
I have mine set at .010 and that is w/ some shims under the Yella Terra pedastals. The shims centered my tip over the valve stem and helped get the right preload.
08-17-2010, 09:23 AM
#18
Brute Speed = Bob at EPP (left EPP to open own shop). They have done a million blower apps...
here read this Mr. I have 3k posts but dont know brute speed...https://ls1tech.com/forums/forced-in...ute-speed.html
here read this Mr. I have 3k posts but dont know brute speed...https://ls1tech.com/forums/forced-in...ute-speed.html
And since when did a supercharged application have ANYTHING to do with a turbo? in reality they are the furthest thing from each other. The pressure ratios are much higher on the intake with a blower, higher on the exhaust with a turbo, and usually equal with a NA setup.
Not taking anything away from Bob, Ive dealt with him and hes not stupid, but selling alot of superchargers doesnt have a thing to do knowing what cam a turbo motor wants. If your unsure put something small in it and the turbo do it.
08-17-2010, 10:56 AM
#19
Youll kill something making real power with a 3" downpipe.
347 is waste if your starting from scratch, do somethign with a 4" bore, and iron will make more power.
9.7s isnt much of a goal, my 76mm 370 went 9.0 in 10 passes, AIM HIGHER
And who the heck is Brute Speed? Get someone that has done top notch performing turbo stuff.
347 is waste if your starting from scratch, do somethign with a 4" bore, and iron will make more power.
9.7s isnt much of a goal, my 76mm 370 went 9.0 in 10 passes, AIM HIGHER
And who the heck is Brute Speed? Get someone that has done top notch performing turbo stuff.
I had the 347ci from my old setup believe I'm trying to get my hands on
370ci LS2
3inch down pipe is limit unless I removed A/C which will never happen anytime soon since the weather is crappy here but I'm still trying to go 3.5DP.
I Ordered the cam form Bob thinking about F1C but chenged my mind buying another cam and shipping overseas will be another $420-450 if the cam didnt work I'll swap it later right now I just want to start the build.
I saw your thread about your new best Congrats running low 9s with M6 ZO6 will be hard (not impossible of course) but I'm not building the car for 1/4 since the nearest track is 600+miles away.
I have a GT-88 from Jose on my 347. It's pretty lazy up to about 12 lbs. The controllers maxed out right now at 14.5-15lbs. The jump from 12-15 was pretty awesome as Jose says this thing doesn't really get efficient untill 14-15 lbs...cant wait to put more boost down it and make some real power.
I saw a couple of vids of your car Very nice..
semetimes I keep thinking to go built A4 in ZO6 with GT-88
You may wanna shy away from the Comp R lifters. They were a PIA to setup, they need a VERY VERY tight tolerance on the preload. Do a search it's something crazy like .008-.002.
I have mine set at .010 and that is w/ some shims under the Yella Terra pedastals. The shims centered my tip over the valve stem and helped get the right preload.
I have mine set at .010 and that is w/ some shims under the Yella Terra pedastals. The shims centered my tip over the valve stem and helped get the right preload.
Thanks for info I'll have to see about that...