pjk91

Other than the guy on ebay, and the one's that come in the Garrett and Hahn kits, who makes Ecotec manifold's (t3 flange)?

celicacobalt

why wouldnt you want a hahn manifold?

pjk91

actually, i want the hahn mani. i would like to know if there are other options available.

roccityroller

hahn has their turbo mani out? hmmm a lil boost with bigger injectors could be an option

NJHK

Hahns manifolds have flanges for Mitsubishi style turbochargers, not T3 style.

NJHK

The manifolds he's referring to are the ones that they use currently for the J-body platform ecotec equipped cars cause it is the same bolt pattern cause it's basically the same motor as in your cobalts with minor changes to under neath the hood.

Just so you understand that there is a manifold you COULD use but no full out kit.

roccityroller

well yea i know that...but piecing together a kit isn't THAT hard. esp with you can find old mitsu turbos everywhere

06cobaltls

its not hard at all, i was doing this on my eclipse, the most part comes from making your custom intercooler piping, it is time consuming if you have to drive your balt everyday,

joeworkstoohard

would the saab oem turbo manifold work?

roccityroller

yes, it should but don't saab manifolds get flanged for saab specific turbos? I would think it'd be a lot easier to get a mitsu turbo than a saab turbo

NJHK

but different people have different preferences. Some want Mitsu turbos, some don't.

NJHK

Saab manifold is a triangular style flange for a mitsubishi turbocharger. The only thing that I am NOT sure of is if all mitsubishi turbos share the same style flanges. My guess is no.

Also, if you were to get an saab eco manifold, you'd have to get an internally wastegated turbocharger that matches that flange.

NJHK

Like said, saab 9-3s use a mitsubishi turbocharger. Like the post I said before, not sure if all mitsubishi turbochargers are all the same style flanges but my guess is that some are different.

Synner

hey, im new to this jus got a 07 LT coupe, an im tryin to figure out what i can do to understand these mechanics in general, i ahve very limited knowledge, but i wanna learn an i love chevy, my friend recomended a turbo over a super, an after doina bit of research i agree, btu can anyone help me out or at least direct me of bout who to talk to?

thanks

NJHK

Well reading on this forum helps but if you wanna learn more, feel free to ask me or go on ecotecforum.com

What specifically are you trying to do to your cobalt?

Also, your friend saying turbo over a supercharger is plainly personal preference and not necessarily "good vs bad". There are plenty of people that are happy with their superchargers and vice versa.

Roadrunner

saab has two versions of the turbo ecotec, the 2.0t and the 2.0T, possibly only in europe (i am not sure)

one makes over 200 hp, the other makes about 170 hp

the lesser of the two uses a garret t25 turbo and the one with the higher horsepower uses the mitsu td16 turbo...

joeworkstoohard

TEH PLOT THICKENSSSSSS

pjk91

So, either manifold will bolt up to our 2.4? I have a goal of 300whp. I'd rather go with external wastgate, which means the Saab mani's are out. This leaves my options to...

Hahn
eBay dude

Listerman

i wouldnt say the mani will restrict you from hitting 300whp only make it more difficult. so many styles of turbo mani's (ramhorn, equal length, log type, tubular, party boy(lol)) different size collectors, external or internal waste gates.

just depends on how much you want to spend.

roccityroller

The hahn is a very good mani. however, any reason you want an external wastegate? a Saab mani with a 16g should be able to produce 300hp with supporting mods and a good amount of boost and be a lot cheaper than a hahn. The only difference is (and njhk can shime in on this) is the hahn kit, i believe allows you to use their super 20g which i think is a larger turbo.

But, i guess without seeing compressor maps of both i wouldn't really be able to reccomend one over the other.

Listerman

idk about PJK but i have always preferred an external over internal but only from TIAL. just such a highly respected company and i trust their product to restrict my boost.

Tial 38mm PURPLE Wastegate FTW

pjk91

I was under the impression that externally adjustable wastegates are easier to adjust, and could be controlled via electronic boost controller while an internally wastegated slug can't be.

NJHK

You don't really want to keep changing your wastegate spring. Remember, your wastegate is your limiter as far as boost. Now, if you plan on having some type of range after that, that's where your boost controller comes in.

Example: if your wastegate is 5 psi, you decide 5 psi is a fine max for everyday driving but when you race you want to turn it up to 10 psi, that's where your boost controller comes in. Having a 10 PSI wastegate spring on all time, you might not be comfortable with that. It's all personal prefference.

pjk91

So both internally and externally wastegated turbos can be controlled via elec boost controller? How does an electronic boost controller work compared to a mechanical one? Is there such thing as a mechanical boost controller?

NJHK

Wastegate choices is personal preference just like turbocharger preference is. Having a 20g isn't necessarily bad or good, it's whatever that person is looking for as far as spool timing. You don't always need the biggest turbo in the world if you are looking for 200 HP (for example). You choose a turbo according to spool timing according to what your motor would be running on it and for power output. When you start looking at a ton of different turbochargers, you'll understand what I'm saying. Also, most turbochargers have power ratings on them (example: my old T3/T4 50 Trim was rated for max of 400 HP). It's not neccessarily to be taken litterally but just to use as an tool for choosing. My setup was able to spool that big of a turbo without huge issues cause of the setup I had.

I personally wouldn't use a stock manifold and a cast iron manifold like that one.