zinner

I just got mine, says Cavalier on the side. Looks like it will fit though. It's listed as compatible with the 05 Cobalt SS 2.0 on the DC Sports Website. It looks great, the weld are great. Probably made by a robot.



The box



Label up close



Picture of the whole package



Picture of the collector.



The flange

unclesid

just a fair warning...beware of DCsports products....ive heard good things about them, but more bad things than good...let us know how it is when you get it installed

Codyak Supercharged

sweet the 2.2 and 2.0 fit the same?

rally

All the ecotec's use the exact same exhaust ports. same size and everything.

Just update us when you get it on if it works

CTCOBALTSSS

Wow, I have to say that's one of the cleaner collectors I have seen. Congrats bro. You will love your new found top-end.

skykapp

Guys this header is very well designed and built. It's the perfect header for the 2.2L ECOTEC, but with 1 1/2 tubing and only a 2" collector it's a little small for the LSJ. I asked them in the past about bumping up the tubing size and collector, but the guy I spoke to at SEMA said it wasn't worth retooling since the number of SS/RedLines produced was too few.

What is the size of the tubes and collector opening? Was this guy feeding me a line of poo-poo or are they 1.5" and 2.0" still? Even 1.5 and 2.5 would be nice, but 2.0 on the LSJ is not good for power. choke choke..

rally

They look to be about 1.5" to 2" from the pictures, but thats just visually looking at a pic on the net.

Florida 76

DC sports is good stuff


.

zinner

It's a two inch opening on the collector. I measured it.

The welds are mint, definetly a robot putting it together.

I am not an exhaust flow genius maybe 2 inches is enough so close to the head.

Matty

Were you looking for that size?

zinner

At my header and a ruler.

Not sure what you mean?

When I look at the primaries and collector it's not like they restrict the opening to 2 inches, the primaries are so tightly collected they are actually 2 inches. I think it's going to flow really well.

Matty

When you were looking for a header did you want a 2' collector or a 2.5 or 3 etc? Or did it just happen to turn out to be 2".

zinner

Well it's a little bit of a story.

I have looked at other headers on the internet.

I saw that ptuning.com had the DC header in stock so I decided to go take a look since it's about 45 minutes from home.

I got there and it said 2002-2004 cavalier, but it looked nice. Good coating, really nice welds, ect, but I told them I was hesitant because it was labeled for the cavy. And went home to think about it. I knew the collector opening looked small. So I went home looked at the other option I was considering the Hahn header, and checked the DC site and saw they listed it for the SS as well so I knew it would work on my car.

So I figured I would take a chance on it DC sports because it's a huge company and if it sucked I would harass them for a refund. I have learned a lot from other trying stuff first on the site, so I figured I could be the guinea pig this time.

The more I look at the collector the less I am worried it's 2 inches because of the way the primaries merge together. Here are some more pictures of the collector.

Matty

I will be interested to see the numbers. When I saw 2" I thought eeek. Kinda small. I went with a header that was 2.5" and I was hesitant. Never know though. It has just as much to do with the design as it does the size.

2K5SS/SC?

It's a great looking setup. The collecter is one of the better ones I have seen for sure. However, IMO the 2" collector is too small for our applications. The stock manifold has a 2" collector, and all the upgraded headers have at least a 2.5" or 3" collector to optimize flow. The DC header you have will show gains because it is smoother and better flowing than the stock manifold, but it will be limited by that collector size for sure. The only real way to find out though is the before/after dyno. Good luck either way.

John

ya man thats a great looking pieace

but u should do a before and after dyno for us!

BallsoutBalt

What kind of coating does it have on it?

n00b question, sorry.

BooSSted

iTrader: (3)

The collector size is a little small but the 1.5" primaries are going to be the real problem. I believe most other headers are 1 7/8" are they not?

RA071623

I'm thinking of this header as well, looks like ptuning is currently out of stock you must have gotten the last one.

Matty

1 5/8" or 1 3/4" is common.

skykapp

Let me make this clear it is a very bad idea to install a more restrictive exhaust than comes stock in a supercharged engine. The M62 supercharger is designed to displace a specific volume of fluid and it will no matter what. Having a more restrictive exhaust will prevent the exhaust from exiting the engine causing real backpressure, increased heat and decreased performance. You'll probably see an increase in boost pressure, but a decrease in supercharger efficiency and in engine performance. Eventually if it's anything like putting a 2.2L L61 stock manifold on a 2.0L LSJ it will screw up the exhaust valves. Ask the dealer about installing the wrong manifold on a 2.0L LSJ, I think there is even a TSB or dealer alert about it. (it may be a Saturn alert for that matter)
I have nothing against DC Sports and last time I looked they didn't advertise this as an LSJ header. This is a very good header for the 2.2L L61, but I don't advise anyone to use it on the supercharged LSJ motor. It's just way too restrictive.

NextLevel

Checkout our DC Sports header group buy.

https://www.cobaltss.net/forums/supporting-vendor-deals-group-purchases-133/dc-sports-4-1-header-group-buy-42717/

skykapp

Nextlevel:
Maybe I'm mistaken, but it looks to me that you are suggesting people with the 2.0L supercharged LSJ purchase this header? If that's the case could you please explain to me how a 2.0" opening designed to displace 200 CFM is going to work better when over twice that (425+ CFM) needs to be displaced? And we're not talking just at 5600 RPM either, the supercharged engine has a Ve of 1.85 from 3000 RPM to redline.

zinner

skykapp, DC sports is advertising the header for the 2005 Cobalt SS L4 application.

http://www.dcsports.com/ViewProduct.aspx?ProductID=433

I spoke to the Tech support and the product and part number I have is compatible and tested with the 2005 Cobalt SS/SC 2.0 litre.

Does anyone have the measurement of the stock collector.

I just read a post on Redlineforums from jmc007 that states the stock manifold is less that 2 inches. JMC0007 is a pretty reliable fella. Looking for a picture, I know there is one.

skykapp

When I get home (hourish) I'll post images of the stock 2.2L "D" opening, the stock 2.0 opening and the GMPP opening. I better hold my fingers until I check again. I believe The LSJ is 2.5" at the flange, but necks down to 2.4ish at the actual collector near the 02 sensor. The 2.2 is a 2.0" opening with a flat where the 02 sensor is making it really about 1.75 and the GMPP is only about a few thousands larger than the stock LSJ, but smoother. I have all 3, I also have a TOG, 3 SCdyne, 1 jason smith and another ebay knock off I can measure. But I can say now they are all 2.5" or 3.00" in the case of the TOG/ZZ performance header.