Anyone interested in Turbo kit?

I am currently wotking with some prototypes of turbo kits for the Trailblazer. If anyone is really interested, post and I will contact you with preliminary pics and pricing soon!

Christian

Who wouldn't be interested in bolting on a few extra horses!?

Yeah I feel the same way, and this motor is well suited to a turbo setup. The base kit should be around 5 psi with options of more boost easily available!

How much hassle would it be to install on the 5,3 V8 if it is available for it?



--What REAL numbers are we talking in gains? Horsepower & torque?

--Is there any noticeable lag in the turbo or what?


--What mods do we have to make to the vehicle to make it ready for a turbo? Replace the fuel pump for a larger unit? Any internals in the motor?


Never dealt with turbo's before so I don't want to destroy anything on my ride ya know. It has to last me at least 6-10 years, so the turbo MUST be 100% reliable.


Finally, what is the price on the turbo kit & what would it cost to install it?

Our original intentions were for the 4.2 because of production numbers. But the 5.3 responds extremely well also, it just needs some more r/d time as some of the piping is different. I will keep you in mind.

As for real numbers on the 5.3 , the fullsize trucks are putting down 420hp and up to the wheels and almost 500 trq.

On the low boost settings you will not need to add anything.
In high boost you will need to add alky injection for the high numbers of 490 to 510 hp just to be safe.

By the way no car even off the showroom floor is 100%. I've seen problems as you drive off the lot. But reliability shouldn't be an issue if you do your regular maintanance.

Christian

Oh yeah price, We are shooting to be in the 4000 range, with very simple install. A few air tools and a saturday afternoon will have you spooling.

As for turbo lag, the housings are sized so the lag is minimal and full boost comes on around 2800- Lots of useable rpm left!!

Christian

What kind of turbos and intercoolers are you using? How are you reprogramming the ECU to accomodate positive manifold pressure (piggyback/reflash/ECU modifications)? How are the injectors performing under full boost? The last thing you want to do is to be under boost when the injectors go lean from excessive duty cycles--especially with the stock cast pistons. Also, some 4.2 engines were having issues with sleeve linings, have you been having any problems with your prototypes?

What kind of numbers are you pulling at 5psi on the 4.2?

What kind of turbos and intercoolers are you using? How are you reprogramming the ECU to accomodate positive manifold pressure (piggyback/reflash/ECU modifications)? How are the injectors performing under full boost? The last thing you want to do is to be under boost when the injectors go lean from excessive duty cycles--especially with the stock cast pistons. Also, some 4.2 engines were having issues with sleeve linings, have you been having any problems with your prototypes?

What kind of numbers are you pulling at 5psi on the 4.2?


I would also like to know what you are going to be using for engine management.

First let me say we are still in developmental stages and have alot of bugs to work out.

We do not have a working prototype on a vehicle currently, we do have issues with getting a ecu program, but we are working on that.

Power as stated before was at the crank on low boost, I should not have said wheel, that was my mistake. We are predicting about 340-385 at the wheels on the 4.2 with low boost. There are still issues with turbo sizing and piping structure that take some time to work out.

I am happy to see that we have some interest and this project is not in vain. If any of you have the resources to tune the 4.2 please let me know, we can work something out. We have a programmer that will work for the 5.3, that was easy, plenty of them out there. It is the I6 I am concerned with.

I could very well be tempted to the boost side! :iceslolan

The price sounds good, but I am NOT mechanically inclined to touch this job. I would need someone highly qualified to perform this on my vehicle.

One problem that is coming to mind.....my extended warranty woudl be toast........come to think of it....so would my tires :evillol:

I am already pushing about 345HP & almost 400lbs of torque.....so more is always better for my lead sled.

I am interested send me some pics at jason@jandjspeedshop.com

Resurrecting an old post, has someone figured out a tubo system yet? What needs to be added, changed, moved, etc. for it to work properly? Thanks, Erik

Seems I'm not the only one with a kit in developement. 2 flavors of engine management. One meant for stock engines and less than 8psi. Other has a second rail and is meant for purpose built turbo engines with forged pistons, better sleeves and very high hp. Like as in you'll need the Hd tranfercase ,4l80E and 4 FAT tires.. :screwy:

Hey whats up everybody. This turbo idea has been going around in my head a while. Thank God someone finally made this idea up....

STSTURBOS also makes a kit for the 5.3 V8 TB. I have a post on this....

Don't know if they have anything for the inline 6 though.

Seems I'm not the only one with a kit in developement. 2 flavors of engine management. One meant for stock engines and less than 8psi. Other has a second rail and is meant for purpose built turbo engines with forged pistons, better sleeves and very high hp. Like as in you'll need the Hd tranfercase ,4l80E and 4 FAT tires.. :screwy:

Where are we with this?
I just bought a I6 Trailblazer and boost has been heavy on my mind.
Anybody pulling this off yet?

Where are we with this?
I just bought a I6 Trailblazer and boost has been heavy on my mind.
Anybody pulling this off yet?

Well, I dont visit much over here anymore, but Im happy to reply.

Short answer is NO, cant do any FI on the 4.2L I6 as no one or program can tune for the boost. Basically what happens when boost kicks in is the MAP sensor sees greater than 1 Bar (14.7psi, or atmospheric pressure) and throws numerous SES and REP codes. Makes you go into limp-home mode at 30mph max.

If you want boost, should have bought a TrailBlazer SS with the LS2. The turbo kits out now are pushing mild boost psi, but talk about a high 12.x truck with just a basic turbo or the Magnacharger kit.

Where are we with this?
I just bought a I6 Trailblazer and boost has been heavy on my mind.
Anybody pulling this off yet?

It has been done, but like Erik says, you have to go totally custom. Customer intake manifold, throttle body, ignition, fuel injection, etc. W/ out the computerization, gotta blank-off the variable exhaust cam timing as well. There is pics floating around somewhere of a cool 1960's station wagon with a turbo vortec/atlas 4.2L in it. He did all what I listed above.

Joel