Mike85220

I bought a manifold from a 2007 manifold recently. I was told that all 2007 Cobalts, even the 2.2 are using the LSJ manifolds, correct?

The problem is, this manifold I got has the SAI port on the top center.
I don't believe any 2002-2005 Ecotecs used the SAI set-up, or at least my wife's 2003 Sunfire
does not have any re-routing from the intake box to the manifold that I can see.

I bought this 07 Cobalt 2.2 manifold off of E-bay, and it does not have the D shape port on the downpipe side, so I am guessing that it is an LSJ manifold. Am I correct on this?

The reason I ask is because I want to take the Sunfire in and have the manifold swapped by a muffler shop. I now see that this SAI port on top is going to leak exhaust fumes I am guessing and for another thing, I am worried it wont even fit. If it does leak, do I just simply have someone weld off the SAI port? Maybe just add JB weld or?

I just don't want to pay to have the old manifold removed and then have to have it put back on for nothing.

I need some help on this one guys, your help is definitely appreciated!

cobalt_driver

im not aware that the older ecotecs had sai. thats deff strange. nhjk i think his name is would know considering he had a built turbo sunfire eco.

avenger09123

Hey chief just get the opening welded shut for 100% security against a leak and you should be shiney...won't cost you but 20$ unless you know someone who can do it for free.....

Mike85220

Is the bolt pattern the same on all the L61 and LSJ manifolds from 2002-2008?

Mike85220

I also forgot to ask:


For the manifold swap, do I need to order all new bolts for the swap or just the two gaskets?

Red07SSNA

If the "2.2 manifold" you bought is welded steel and not cast iron then it is a SAI manifold. Even if you have the top hole welded shut (or make a plate and cut a gasket to seal it) you will still have exhaust gases present all around the manifold plate -- see the open area around the ports where the manifold mounts to the head? IMO I wouldn't use it because of this.

Just for the record....the 07-08 2.2s do not have the LSJ manifold. The 07-08 2.2s use a redesigned manifold but it has a different part number then the LSJ manifold.

Mike85220

A pic of the manifold I have is at this link:
https://www.cobaltss.net/forums/show...t=sai+manifold

It does not look cast. I guess it is not a LSJ manifold, but it sure isn't the POS D shaped port manifold on the older Ecotecs, so the flow is a lot better.

Couldn't I just weld around each port to add enough material so the gasket has a positive lock front to back?

I would also weld the hole, but on the inside and not the top.

Red07SSNA

Definitely the SAI manifold.....Lotta work....but if you're going to go that far yea it would work. Have it machined flat after welding and it should work.

Mike85220

Thank you for the info, I will get on it!

Lisa-Adam

While I'm not an expert in this field, I know that new spark plug wires (of basically any kind) are good to install.
Basically, the best wires have the smallest resistance. You can test your current wires' resistance with a voltmeter - check with a professional mechanic to find how many Ohms are allowed before you go spending a lot on replacement wires. Some of the best wires are simply OEM replacements from NGK - if your car is Japanese. They're a lot cheaper than the much-hyped 8mm 'performance' wires you see in the magazines, and probably perform just as well.

HunterKiller89

iTrader: (1)

why not buy a real header? the one you bought isnt really a performance gain....and is instead just a hassle. see if you can return it...

Red07SSNA

I think you're in the wrong CAR forum.....

umrdyldo

iTrader: (1)

what a terribly weird form of spam.