Turbonetics 76mm repair or replacment - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

robbiegordon · 05-07-2021, 11:21 AM

Hey guys,
I unfortunately had a filter come a part on me and damage the compressor wheel on my turbo. I'm on the fence whether to repair or replace it .

Problem is I can not get a hold of turbonetics. After multiple phone calls and a few weeks of waiting on emails, I'm hesitant to even order the stage 2 from them as a replacment at this point.

Does anyone have any advice as to what might be a good comparable replacment for me from another turbo manufacturer? Or a place that could rebuild it in the southern California area? I'd like to keep the turbonetics kit, as I don't feel like doing a full kit replacment .

I have a mildly upgraded fuel set up ID850s and a Zl1 pump and tsp cam 227/230 .629”/.615” 114 LSA +3 advance.

Thanks for any help and advice !

bayarea408 · 05-07-2021, 02:12 PM

upgrade to a Precision 76/75 CEA, either a gen 1 or a gen 2 journal works nice. Both will be an upgrade over that turbonetics unit. The PTE turbo housing is milled away for more flow. It wont be a huge turbo but size for size it will make more power. My journal gen 1 has been going since i got the kit several years ago.

robbiegordon · 05-07-2021, 03:57 PM

Quote:

Originally Posted by bayarea408

upgrade to a Precision 76/75 CEA, either a gen 1 or a gen 2 journal works nice. Both will be an upgrade over that turbonetics unit. The PTE turbo housing is milled away for more flow. It wont be a huge turbo but size for size it will make more power. My journal gen 1 has been going since i got the kit several years ago.

Thank you for the info, I'll look into them .

*SSE 4 2SS* · 05-07-2021, 04:59 PM

Quote:

Originally Posted by bayarea408

upgrade to a Precision 76/75 CEA, either a gen 1 or a gen 2 journal works nice. Both will be an upgrade over that turbonetics unit. The PTE turbo housing is milled away for more flow. It wont be a huge turbo but size for size it will make more power. My journal gen 1 has been going since i got the kit several years ago.

I'll second the choice for the Precision Turbo.... I run two of the 76/75 CEA Turbos with the ceramic ball bearing center section.....Incredibly efficient....

robbiegordon · 05-07-2021, 09:44 PM

Thanks for the help , either of these ?

https://www.summitracing.com/parts/ptu-2207012229

https://www.summitracing.com/parts/ptu-22207216229

*SSE 4 2SS* · 05-08-2021, 05:06 PM

Quote:

Originally Posted by robbiegordon

Thanks for the help , either of these ?

https://www.summitracing.com/parts/ptu-22207216229

This is the turbo/s I run.... We push them pretty hard....

CamaroCracka · 05-10-2021, 07:27 AM

I had a Turbonetics several years ago and had trouble getting a response too. I ended up selling it because the turbine wheel was too small and their "ball bearing" turbos are really hybrid journal/ball bearing.

I run the 76/75 CompTurbo oilless 3.0 and it does pretty well, highly efficient and no oiling issues. It is also water cooled like my Turbonetics was, plus triple ceramic ball bearing and billet wheel. Even with a stock cam, a 76/75 is a bit small on the compressor side and will limit your top end power in a single turbo configuration. I run the 1.15 AR compressor housing to help alleviate some of the back pressure. When I got the turbo, it was a bit of a compromise because anything bigger would have required modifying the piping. When I switched from the 75/68 to the 76/75 my peak hp moved from 5000 rpm to 5900 rpm. With the cam I am running, it should produce more power over 6k, so my guess is the 75mm turbine is the choke point.

CompTurbo just came out with a 78/80 that is the same physical size (including down pipe connection) as the 76/75. I am thinking of going to it in the future just for the bigger turbine wheel, or just get another kit that will allow for a larger turbo frame. However, it's hard to justify that kind of expense for an extra 50hp when there is limited street traction as it is.

Can't help you with a shop in SoCal, but there must be tons of them. There is a good place in Miami that will do it by mail, but that is a long way to ship a turbo for work.

bayarea408 · 05-10-2021, 01:49 PM

Quote:

Originally Posted by CamaroCracka

I had a Turbonetics several years ago and had trouble getting a response too. I ended up selling it because the turbine wheel was too small and their "ball bearing" turbos are really hybrid journal/ball bearing.

I run the 76/75 CompTurbo oilless 3.0 and it does pretty well, highly efficient and no oiling issues. It is also water cooled like my Turbonetics was, plus triple ceramic ball bearing and billet wheel. Even with a stock cam, a 76/75 is a bit small on the compressor side and will limit your top end power in a single turbo configuration. I run the 1.15 AR compressor housing to help alleviate some of the back pressure. When I got the turbo, it was a bit of a compromise because anything bigger would have required modifying the piping. When I switched from the 75/68 to the 76/75 my peak hp moved from 5000 rpm to 5900 rpm. With the cam I am running, it should produce more power over 6k, so my guess is the 75mm turbine is the choke point.

CompTurbo just came out with a 78/80 that is the same physical size (including down pipe connection) as the 76/75. I am thinking of going to it in the future just for the bigger turbine wheel, or just get another kit that will allow for a larger turbo frame. However, it's hard to justify that kind of expense for an extra 50hp when there is limited street traction as it is.

Can't help you with a shop in SoCal, but there must be tons of them. There is a good place in Miami that will do it by mail, but that is a long way to ship a turbo for work.

How many miles have you clocked on the oiless unit and how often does it need to be regreased?

robbiegordon · 05-10-2021, 02:26 PM

Thanks for all the info so far . It's been super helpful. I'm still researching and comparing all my options. The 78/80 Comp turbo sounds interesting as well. I wasn't going to go oiless since I already have the feed and drain set up, and I've heard mixed things about oiless.

FrankT · 05-10-2021, 04:57 PM

Quote:

Originally Posted by bayarea408

How many miles have you clocked on the oiless unit and how often does it need to be regreased?

I'm running a pair of the Comp oil less 6262 (with liquid cooled center section) on my Huron Speed twin kit. Coming up on three thousand miles since the install which is when Comp says they need to be greased. You have to use their proprietary grease ($$$) and seven pumps of grease every three thousand miles. Not having the engine oil through the turbos is a plus for me, although some would disagree. I run Amsoil Signature 5W-30 and change it once a year, since I don't put a ton of miles on the car.

CamaroCracka · 05-11-2021, 06:32 AM

Quote:

Originally Posted by bayarea408

How many miles have you clocked on the oiless unit and how often does it need to be regreased?

Maybe 5k, but that includes a couple HPDE events and several trips to the drag strip. I don't get to drive it much working from home.

You put 7 squirts in every oil change, i.e. 3k miles.

The grease is crazy expensive. List is $150 for a 3oz tube, but they sold it to me for half that when I bought the turbo. The little 3oz tube will last a long time. I bought a specific grease gun for it since it was going to be years before I used it up.

I went oilless because I didn't like the idea of lubricating with a pin hole restrictor fitting to keep it from pushing oil into the exhaust. On some twin kits, they would eliminate the need for a scavenge pump. They offer a rebuild service at 50-60k, but a new CHRA is only about 400.

Now that I think about it, you might be able to get a new CHRA for your Tnetics if you are looking for the lowest spend.

robbiegordon · 05-14-2021, 01:24 PM

Thanks for all the advice guys. I ended up ordering the precision turbo 76/75 cea gen 2. I'll let you all know how it goes.

Also for the record, I had ordered the turbonetics stage 2 called, emailed , multplie times . Never got a response . Canceled the order and went with the precision.

bayarea408 · 05-14-2021, 01:57 PM

Quote:

Originally Posted by robbiegordon

Thanks for all the advice guys. I ended up ordering the precision turbo 76/75 cea gen 2. I'll let you all know how it goes.

Also for the record, I had ordered the turbonetics stage 2 called, emailed , multplie times . Never got a response . Canceled the order and went with the precision.

my old PTE gen 1 journal SMACKS, i can only imagine what an upgraded gen 2 does

robbiegordon · 05-17-2021, 06:04 PM

Quote:

Originally Posted by bayarea408

my old PTE gen 1 journal SMACKS, i can only imagine what an upgraded gen 2 does

I'm excited. Should be here in a few days .

What do you guys think about the cold side plumbing ... I know some metal was taken out of the compressor blades . I pulled the intake off the intake manifold and didn't see any metal shavings . Do you think I need to worry about what might be in the intercooler, as far as metal contamination? If so is there anything I can do about it?

05-07-2021, 11:21 AM	#1
robbiegordon Robert Drives: 2011 Summit White SS LS3 Join Date: Feb 2011 Location: Jacksonville, FL Posts: 323 View My Garage	Turbonetics 76mm repair or replacment Hey guys, I unfortunately had a filter come a part on me and damage the compressor wheel on my turbo. I'm on the fence whether to repair or replace it . Problem is I can not get a hold of turbonetics. After multiple phone calls and a few weeks of waiting on emails, I'm hesitant to even order the stage 2 from them as a replacment at this point. Does anyone have any advice as to what might be a good comparable replacment for me from another turbo manufacturer? Or a place that could rebuild it in the southern California area? I'd like to keep the turbonetics kit, as I don't feel like doing a full kit replacment . I have a mildly upgraded fuel set up ID850s and a Zl1 pump and tsp cam 227/230 .629”/.615” 114 LSA +3 advance. Thanks for any help and advice ! Attached Images

05-07-2021, 09:44 PM	#5
robbiegordon Robert Drives: 2011 Summit White SS LS3 Join Date: Feb 2011 Location: Jacksonville, FL Posts: 323 View My Garage	Thanks for the help , either of these ? https://www.summitracing.com/parts/ptu-2207012229 https://www.summitracing.com/parts/ptu-22207216229 __________________ Turbonetics T76 10psi with aem truboost controller, 231/239 115 LSA Comp Cam, adm fpcm, zl1 pump, Tr7ix plugs, 3.91/1LE Gears,Melling Oil pump, custom intake, catless midpipes, powerbond 25% underdrive, PFADT Aluminum subframe bushings, 1.5 inch drop, PFADT sway bars, BMR; sub frame connectors ,Trailing arms, Toe Rods, strut tower brace and rear diff bushings, Hurst short throw shifter and line lock,dyno #s TBD, , tuned by Pat G tuning

05-10-2021, 07:27 AM	#7
CamaroCracka Drives: 2010 Turbo LS3 Join Date: Dec 2009 Location: Palm Bay, FL Posts: 2,735	I had a Turbonetics several years ago and had trouble getting a response too. I ended up selling it because the turbine wheel was too small and their "ball bearing" turbos are really hybrid journal/ball bearing. I run the 76/75 CompTurbo oilless 3.0 and it does pretty well, highly efficient and no oiling issues. It is also water cooled like my Turbonetics was, plus triple ceramic ball bearing and billet wheel. Even with a stock cam, a 76/75 is a bit small on the compressor side and will limit your top end power in a single turbo configuration. I run the 1.15 AR compressor housing to help alleviate some of the back pressure. When I got the turbo, it was a bit of a compromise because anything bigger would have required modifying the piping. When I switched from the 75/68 to the 76/75 my peak hp moved from 5000 rpm to 5900 rpm. With the cam I am running, it should produce more power over 6k, so my guess is the 75mm turbine is the choke point. CompTurbo just came out with a 78/80 that is the same physical size (including down pipe connection) as the 76/75. I am thinking of going to it in the future just for the bigger turbine wheel, or just get another kit that will allow for a larger turbo frame. However, it's hard to justify that kind of expense for an extra 50hp when there is limited street traction as it is. Can't help you with a shop in SoCal, but there must be tons of them. There is a good place in Miami that will do it by mail, but that is a long way to ship a turbo for work. __________________ 2010 SS - On3 kit with downpipe cutout, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1/1LE brakes. 2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. ZL1 brakes. Last edited by CamaroCracka; 05-10-2021 at 07:46 AM.

05-07-2021, 02:12 PM	#2
bayarea408 Drives: T Join Date: Mar 2015 Location: CA Posts: 803	upgrade to a Precision 76/75 CEA, either a gen 1 or a gen 2 journal works nice. Both will be an upgrade over that turbonetics unit. The PTE turbo housing is milled away for more flow. It wont be a huge turbo but size for size it will make more power. My journal gen 1 has been going since i got the kit several years ago.

05-10-2021, 02:26 PM	#9
robbiegordon Robert Drives: 2011 Summit White SS LS3 Join Date: Feb 2011 Location: Jacksonville, FL Posts: 323 View My Garage	Thanks for all the info so far . It's been super helpful. I'm still researching and comparing all my options. The 78/80 Comp turbo sounds interesting as well. I wasn't going to go oiless since I already have the feed and drain set up, and I've heard mixed things about oiless.

05-14-2021, 01:24 PM	#12
robbiegordon Robert Drives: 2011 Summit White SS LS3 Join Date: Feb 2011 Location: Jacksonville, FL Posts: 323 View My Garage	Thanks for all the advice guys. I ended up ordering the precision turbo 76/75 cea gen 2. I'll let you all know how it goes. Also for the record, I had ordered the turbonetics stage 2 called, emailed , multplie times . Never got a response . Canceled the order and went with the precision.