Well, I figured not everyone frequents the "Power Adder" board, so I thought I'd post some pics of my project.. Oh yea, sorry this is so long...

Project Name: TTZ28 - www.ttz28.com

I had been doing a lot of reading about turbochargers and their phenomenal performance potential. I didn't really plan on putting a twin turbo setup on my car anytime soon, but one day a pair of suitable turbos pretty much fell into my lap at the right price..

Now it was on.. There were a few other pieces I needed to get started and it took me under a month to track them down and get them ordered.

Here is what the turbos looked like when I first got them:




One is a Garrett and the other is an Air Research. Both are T3's and have .63/.60 a/r's.

Since my motor is carbureted, I had to get a carb bonnet so that I could force the air down the carburetor. There are certain modifications you need to make to a std Holley for this to work, but it's pretty simple.. You can check out my site for further directions.

I absolutely love the way this turned out.. The mouth of the bonnet is 4 inches and I had to reduce it to a 3" inlet with some stainless pipe..

 

Next I needed to make some headers that pointed towards the front of the car. I thefted an old pair of headers from my friend that I could steal the flanges off of. I built a log style header because it was compact and proven to be a decent performer.



The headers took me a while to complete and I'm still not real happy with them, but they'll do for now..

Next up was mounting the turbos to the headers. This wasn't too bad I guess.. A lot of cutting, fitting, cutting, fitting, welding, cutting... etc etc




This is the passenger side all tac'd together ready for finishing...




This is the drivers side header installed waiting to be mated with a turbo:

 

This is how I had to run the exhaust from the turbo on the drivers side.. What a pain this was...



Now this side is ready for finishing...




Here is the pipe work to connect the two turbos and feed them to the carburetor. I still haven't had a chance to finish it totally yet. I still have to add a blow off valve before I finish it.




I made a couple of custom air filters for something to do...






A couple of things that I didn't photograph are the turbo oil drain backs and the fuel pump..

I put two 1/2 inch pieces of pipe in the front of my oil pan for the turbos to use to return their oil to the motor.

The fuel pump is a Carter 130gph mechanical fuel pump that I boost referenced so that fuel pressure would increase 1:1 with boost. Here is a pic of almost the same thing I did...




Hrm, that's about all I can think of right now.. I had it out for a blast shortly after I was finished and I was astounded by how well it works.. I have 10psi of boost before my stall speed (3k rpm) and puts my 150 shot of nitrous to shame...

The project itself wasn't really complicated, but it was time consuming.. It took me about a month of working evenings and weekends on it to complete. I have about 1500 bucks Canadian tied up in the TT setup so far... I'm hoping to hit the 10's on my ET streets with pump gas, but only time will tell...

Cheers,

 

I'm getting mainly red x's

 

None of your pics showed up except the very last one...

 

Yea, sorry guys, for some silly reason a bunch of spaces got insterted into my image addresses.... doh! I think they're all fixed now..

Cheers,

 

Ya, it looks like a lot of work, but nice job, I'm sure all that work has paid off!

 

excellent work!!

 

WOW i want one

real nice man

 

Damn man, all I have to say is, NICE JOB. I can only appreciate the work you put into that, awesome.

 

I want boost. :: cries ::

 

Thanks guys, I can't wait for the snow to be gone so I can give er a good go on the highway.... errr, I mean track..

Cheers,

 

I think it is really great that you have welding skills because that eliminates a big part of the cost of turbocharging. It looks a little crude, but hey if it works thats all that matters. If you only have 1500 Canadian tied up in it then you are doing a fantastic job since Automobile Manufacturers and Tuners can't fabricate a turbo for that price.



The last twin turbo carbed engine I saw was in a station wagon in Hot Rod Magazine. Fuel injection is the more popular choice for turbos. You really seem to make the project easy to do. Your project is simply amazing.

 

Thanks devianb,

It's not a little crude, it's very crude.. I wasn't really going for looks, just functionality..

My latest project is to turbo my 2.8 MPFI Fiero.. I figure a lot of the tuning and setup is transferable to the F-Body V6 guys... I have the turbo, intercooler, injectors and ability to burn my own chips so it's just a matter of slapping the thing on there... It'll be a walk in the park compared to the Z28 and the expected cost should be about 500 bucks..

After that's done I'll be ready to convert my TTZ28 to speed density.. I bought a 7749 sy/ty ECM and am semi looking for a 85-92 tpi wiring harness to repin..

Cheers,

 

Sweet! Nice work. I admire your patience. Thats looks like a "10 thrown wrench's" job to me.

 

Botlfed, awesome job with all this. Just one question though. Was there any way you could've made the turbos a little closer to the heads? From what I've hear, on any turbo, you want it to be as close to the head as possible for optimal performance. Any thoughts on this? Nice job anyways....I'm sure it'll kick my car's ***.

 

that is some nice fabrication work. good job on the project. are you gonna be combining the boost and nitrious? any thoughts of splicing an intercooler in there? great job and good luck finishing her up.

 

Very nice work, and thats some good fabing skills
I'm from NS I'd love to come up and see your car in action and to see the setup in person sometime in the summer.

 

CamaroX84 - Thanks! I felt that it was crowded enough as it was and that the gains wouldn't be enough for me to curse and swear even more by having the turbos closer to the engine

darbleinad - Thank you, I was thinking about using a 50hp shot to get me out of the hole and have it shut off at 5 - 6 psi of boost.. I originally planned on two small intercoolers, but decided to forego them and use water/alk injection for the time being.

JimmyG- 91Z - Thanks, let me know when you're coming down.. My friend and I may be heading over to Lunenberg in the next couple weeks.. We're dropping his Fiero off to have some stuff done..


Cheers,

 

Looking good! Keep us updated.

 

that is some nice fabrication and welding skills. i hope to be doing things like that one day. i just learned how to weld and i cant get enough of it!!

 

F-in A man!!

Good to see some more canuks going out on a limb and building some crazee shieot!

Too much st. patty's day, too hard to continue tyoing.

 

Sweet man .. looks great , should perform even better. That is one badass 82' z

 

You really should have posted in this in the power adder's board.. A lot of people over there would love it.

 

Nice job!!! I only have one concern with it... what about the upper radiator hose? From the pictures, it looks like it is directly above the left side turbo. Those turbos give off some nasty heat!!!

Also, having that same turbo that close to the radiator, do you think it'll cause any cooling problems? Maybe not so much on the highway, but around town it might.

Just my 2 cents....

Looks awesome, though!! How many ponies do think you'll get out of her?

Later,
Mike

 

Wow! That looks like it took some long hours. Very nice. When you said twins, this is all I could think of. Twin turbos are nice though too.

 

Good idea on the 749 ECM. Thats what I'm in the process of doing with my 91Z. Good cheap FMU that you can tune. Gets a thumbs up from me. Just remember the max boost the stock 2 bar map sensor can account for on the 749 is 14.5 psi. If you plan to push more you'll need a 3 bar map sensor. What type of intake are you going to use when you go EFI?

 

Thanks everyone, I appreciate the feedback!

12 Sec GTA - I gave the power adder board day-by-day updates the whole time I was building this setup.. Since a lot of people don't frequent that area, I figured I'd post the semi-finished project here.

Nitroburn - You're right on both counts.. The rad hose is just temporary until I find a more suitable solution.. The rad is a pretty wide 3 core so I'm hoping by having the turbo that close, it won't affect it that much... We shall see..

88GTAinRI - Yes, but it's all worth it now! Nice pic BTW..

CrazyHawaiian - Yea, I've heard good things about the 7749 and such.. I'll be interested to hear how you make out with it because you'll most likely have yours done before mine.. I've got a really wicked idea for an intake, although it's probably already been done..

Basically it's going to be the normal "convert the carb intake to EFI" thing by welding in injector bosses etc etc... Since I'm running a TT setup and am too cheap to buy a big throttle body, I'm going to addapt 2 regular throttle boddies to the intake.. Not too sure how it will work, but it will be different..

Cheers,

 

Ur turboing a 2.8 MPFI? That is what i have in my camaro . Let me know how that goes and what it costs...i might look into that...any estimated price range and/or suggestions on brands?

 

DISTURBthePEACE - I'll try to keep either the power adder board or the V6 board aware of my progress... I realize it's not a Camaro, but I feel the info is very pertinant to the V6 crew.. If asked, I'll keep it off the board tho..

Cheers,