TurboTPI upgrade....Finally
#1
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
TurboTPI upgrade....Finally
Well, after almost 10years i am doing some upgrading. New turbo and wastegate. After so many years and not going much faster over the years (turbo is maxed out), ive finally gotten bored. I figure my 62mm turbonetics has done good so far, but i want alittle more. I was looking at the turbonetics hurricane series 78mm turbo, but a friend of mine didnt use a turbo he bought a (Turbonetics HP-76) and desided to sell it, so i said if it fits, ill take it. Its tight, but it fits. With a horsepower rating of 1,000hp, i have plenty of room to grow. I also went away with the 38mm wastgate i had previously and went with a 44mm tial unit. Should be back on the street for some fresh tuning in a couple weeks. Im hoping for some low 10 sec times, MAYBE a 9.99 with the new setup. We will see. The stock block and crank will determine that. Heres a pic of the turbo on the car.
#5
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
Thanks guys, should be getting the wastegate and piping for it figured out next week. I had the wastegate venting to atmosphere, but this time im going to route it back into the exhaust, so i have a little bit of work to do. Im kind of sick of the loud open wastegate sound.
#7
Supreme Member
Join Date: Jul 1999
Location: Panama City FL
Posts: 1,771
Likes: 0
Received 4 Likes
on
4 Posts
Car: 87 Iroc
Engine: Turbocharged 5.7 Pro-Fl-XT
Transmission: 700R4 for moment
Axle/Gears: 3.25 9 inch
Re: TurboTPI upgrade....Finally
Are you running a log on the passenger side or a header? I saw pics of a header on the driver side.
I can't seem to get my car past the 94 mph barrier in the 1/8th at any boost and our cars are similar in many ways. Trying to figure out my bottle neck.
I can't seem to get my car past the 94 mph barrier in the 1/8th at any boost and our cars are similar in many ways. Trying to figure out my bottle neck.
Trending Topics
#10
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
The passenger side is half header, half log. The two out side exhaust ports exit the head in a single pipe then joint a main "log" that the two center exhaust ports just exit straight into.
#11
Supreme Member
Join Date: Aug 2011
Location: Aloha, Oregon
Posts: 1,178
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Christine Z28
Engine: RV Cam and Intake 350 SBC
Transmission: 5speed
Axle/Gears: 3.08 ls Posi
Re: TurboTPI upgrade....Finally
Turbo TPI....You sir, are my hero.
#15
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
Thanks, I will try and find my fastest timeslip. What is your car putting down? or running in the 1/4?
#19
Member
Join Date: Sep 2012
Location: Long Island NY
Posts: 220
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Trans Am WS6
Engine: SBC+TPI+BOOST
Transmission: 700R4
Axle/Gears: Eaton 373
Re: TurboTPI upgrade....Finally
I always have loved this formula. TPI + BOOST = a beautiful thing!!!!
Hey,, wait just one minute. I thought SBC with TPI cant be fast... J/K. lol
Hey,, wait just one minute. I thought SBC with TPI cant be fast... J/K. lol
#20
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
I found a timeslip where i went 6.9@102mph in the 1/8 with a 1.61 60ft. That run i went 10.81@126mph. I cant find my faster timeslips but i want to say 6.8@103 1/8 mile and i know ive cut a 1.55 60ft and that was one of my 10.7passes @ 129mph in the 1/4 mile. And i know i had one pass in the car that it went 130mph in the 1/4 mile. So we are very, very close power wise i'd say
#21
TGO Supporter
iTrader: (1)
Join Date: Jan 2002
Location: Hampden Maine
Posts: 817
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1992 Firebird
Engine: Stealth Rammed 412 with TC78 Turbo
Transmission: '93 T-56
Axle/Gears: 3.27 9 bolt posi with PBR discs
Re: TurboTPI upgrade....Finally
Awesome! Looking forward to seeing how the new turbo works out for you. I've got a TC78 on my setup. Still dialing in a few things on it, but it's been a blast so far!
-Paul
-Paul
#23
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
obeymybird, yes, i have a BBS header.
Well, ive been driving the car daily to work and back. I have the boost set at 14 lbs and it feels alot stronger than before. The boost comes in so much harder than the 62mm. Its almost like hitting N2O. I was going to start working on the tune, but i think im just gonna wait and get the EBL p4 when i have the extra cash. Once i get a wideband in the car and verify the A/F ratio is safe, ill get some new times at the dragstrip.
Well, ive been driving the car daily to work and back. I have the boost set at 14 lbs and it feels alot stronger than before. The boost comes in so much harder than the 62mm. Its almost like hitting N2O. I was going to start working on the tune, but i think im just gonna wait and get the EBL p4 when i have the extra cash. Once i get a wideband in the car and verify the A/F ratio is safe, ill get some new times at the dragstrip.
#24
Member
Join Date: Sep 2012
Location: Long Island NY
Posts: 220
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Trans Am WS6
Engine: SBC+TPI+BOOST
Transmission: 700R4
Axle/Gears: Eaton 373
Re: TurboTPI upgrade....Finally
Those really are amazing #'s with those heads. There 113's right? Whats youre intake setup exactly? Runners, Base, etc.. And what is youre compression?
#25
Supreme Member
iTrader: (4)
Join Date: Dec 2001
Location: Chicagoland
Posts: 9,666
Received 546 Likes
on
376 Posts
Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: TurboTPI upgrade....Finally
Well, after almost 10years i am doing some upgrading. New turbo and wastegate. After so many years and not going much faster over the years (turbo is maxed out), ive finally gotten bored. I figure my 62mm turbonetics has done good so far, but i want alittle more. I was looking at the turbonetics hurricane series 78mm turbo, but a friend of mine didnt use a turbo he bought a (Turbonetics HP-76) and desided to sell it, so i said if it fits, ill take it. Its tight, but it fits. With a horsepower rating of 1,000hp, i have plenty of room to grow. I also went away with the 38mm wastgate i had previously and went with a 44mm tial unit. Should be back on the street for some fresh tuning in a couple weeks. Im hoping for some low 10 sec times, MAYBE a 9.99 with the new setup. We will see. The stock block and crank will determine that. Heres a pic of the turbo on the car.
#26
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
Thanks, I'm not sure exact numbers off the heads, but they are off a 1990 L98 vette. I have TPIS large tube runners, ported stock base, ported plenum and 58mm throttle body. Compression is 8.35:1
#28
Member
Join Date: Sep 2012
Location: Long Island NY
Posts: 220
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Trans Am WS6
Engine: SBC+TPI+BOOST
Transmission: 700R4
Axle/Gears: Eaton 373
Re: TurboTPI upgrade....Finally
I love youre car BTW. Have the GMHT with it.
#29
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
Yep, they are the 58cc heads. I have dished pistons and the thickest SCE copper head gaskets available. I was trying to get the lowest comp possible with the 58cc heads. i was trying for 8:1
#31
Senior Member
Join Date: Jun 2003
Location: Rockville, MD
Posts: 828
Likes: 0
Received 2 Likes
on
2 Posts
Car: 1989 Camaro RS
Engine: Ellis Juan
Transmission: t-56
Re: TurboTPI upgrade....Finally
OP, your times will improve cosiderably if you can get that turbo spooled up at the stage light. some sort of make shift bang box would do it... and scare the bajesus out of people at red lights
#33
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
Yeah, im sure i could have gotton mid-lows 10's if i has a trans brake, but then i'd have rear axle problems for sure. Im not sure how the stock rear end is still alive now, let alone with any boosted launches. haha
#34
Supreme Member
Join Date: Jul 1999
Location: Panama City FL
Posts: 1,771
Likes: 0
Received 4 Likes
on
4 Posts
Car: 87 Iroc
Engine: Turbocharged 5.7 Pro-Fl-XT
Transmission: 700R4 for moment
Axle/Gears: 3.25 9 inch
Re: TurboTPI upgrade....Finally
TurboedTPI,
I'm on a mission to get my 60 foots to 1.5. Since your combo is similar to mine, just wondering what all you've done to get to those. I went 1.59 on my old sport coupe on stock suspension and have gone 1.79 on radials in the Iroc, but since putting the new engine in I can't seem to control wheel spin on the rollout.. My best 60 foot now has gone to 2.0. Anyway I want to get it right but I don't want to buy parts I don't need. Debating on dual adjustable shocks and struts and an adjustable torque arm.
I'm on a mission to get my 60 foots to 1.5. Since your combo is similar to mine, just wondering what all you've done to get to those. I went 1.59 on my old sport coupe on stock suspension and have gone 1.79 on radials in the Iroc, but since putting the new engine in I can't seem to control wheel spin on the rollout.. My best 60 foot now has gone to 2.0. Anyway I want to get it right but I don't want to buy parts I don't need. Debating on dual adjustable shocks and struts and an adjustable torque arm.
#35
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
TurboedTPI,
I'm on a mission to get my 60 foots to 1.5. Since your combo is similar to mine, just wondering what all you've done to get to those. I went 1.59 on my old sport coupe on stock suspension and have gone 1.79 on radials in the Iroc, but since putting the new engine in I can't seem to control wheel spin on the rollout.. My best 60 foot now has gone to 2.0. Anyway I want to get it right but I don't want to buy parts I don't need. Debating on dual adjustable shocks and struts and an adjustable torque arm.
I'm on a mission to get my 60 foots to 1.5. Since your combo is similar to mine, just wondering what all you've done to get to those. I went 1.59 on my old sport coupe on stock suspension and have gone 1.79 on radials in the Iroc, but since putting the new engine in I can't seem to control wheel spin on the rollout.. My best 60 foot now has gone to 2.0. Anyway I want to get it right but I don't want to buy parts I don't need. Debating on dual adjustable shocks and struts and an adjustable torque arm.
#37
Supreme Member
Join Date: Jul 1999
Location: Panama City FL
Posts: 1,771
Likes: 0
Received 4 Likes
on
4 Posts
Car: 87 Iroc
Engine: Turbocharged 5.7 Pro-Fl-XT
Transmission: 700R4 for moment
Axle/Gears: 3.25 9 inch
Re: TurboTPI upgrade....Finally
What tires exactly are you running? My best 60ft's were with 255/50r16 M/T drag radials on my stock wheels. I have all stock suspension execpt for TPIS valved shocks. Its transfers weight really well for being nearly stock. One day ill get a 9in rear axle and get some boosted launches made.
My tires are stock size 16" Firestone Wide Oval Indy 500's. The original Wide Ovals hooked better. I just found a set of the M/T ET Streets 255/60r16 that I would use on the stockers. But my friend had me convinced to buy some 15 inch wheels instead until I saw your 1.5 60 foot on the same 16" tires I was looking at.
I've been leaning towards double adjustable struts/shocks front and rear. I really like the QA1 coil over conversion struts. The only other major parts I was thinking about are Spohn crossmember with driveshaft loop and SFC's.
#38
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
took a short vid of the car. Need some out of car vids
#42
Supreme Member
Join Date: Aug 2011
Location: Aloha, Oregon
Posts: 1,178
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Christine Z28
Engine: RV Cam and Intake 350 SBC
Transmission: 5speed
Axle/Gears: 3.08 ls Posi
Re: TurboTPI upgrade....Finally
took a short vid of the car. Need some out of car vids
http://www.youtube.com/watch?v=QlciC...FSCLVYtUK3KaQA
http://www.youtube.com/watch?v=QlciC...FSCLVYtUK3KaQA
#45
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
So tonite i finally finished the wastegate plumbing, it is now routed back into the exhaust. I only drove it a few miles with a couple pulls, but so far its great. Nice and quiet, and able to hear more turbo whistle. And i still have the electric cutout if i want to disturb the peace.
#46
Supreme Member
Join Date: Aug 2011
Location: Aloha, Oregon
Posts: 1,178
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Christine Z28
Engine: RV Cam and Intake 350 SBC
Transmission: 5speed
Axle/Gears: 3.08 ls Posi
Re: TurboTPI upgrade....Finally
alittle longer video
http://youtu.be/tzo4g7lxKQw
http://youtu.be/tzo4g7lxKQw
#47
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
Heres a video of the car from the outside, first pass closed exhaust cutout, second is with the exhaust cutout open. The second one, the sound cuts out as i pass the camera, buts its just the recording, not the car cutting out.
#48
Member
Thread Starter
Join Date: Apr 2004
Location: on the street
Posts: 467
Likes: 0
Received 1 Like
on
1 Post
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Re: TurboTPI upgrade....Finally
Heres an in car video. The sound of the exhaust has me thinking i need a bigger exhaust system. It sounds like air rushing out, no engine sound at all, just high velocity air blowing out the exhaust.
#49
Supreme Member
iTrader: (17)
Re: TurboTPI upgrade....Finally
Heres an in car video. The sound of the exhaust has me thinking i need a bigger exhaust system. It sounds like air rushing out, no engine sound at all, just high velocity air blowing out the exhaust.
http://youtu.be/_w9bwvhlXSo
http://youtu.be/_w9bwvhlXSo