Hey guys.

So, I'm super in need of some info. I seem to have a 1st gen ZZP header/dp combo that I got used. No gaskets. Didn't realize I didn't have a gasket for the header to downpipe piece. Of course the header has a 2 bolt set up instead of the stock 3 bolts. What size gasket do I need? It seems like the new header is like 2.89, but how about the old one? Even if I don't have the exact piece I need, will it still basically work? The bolt sizes are the same, I just need the circle size and overall full diameter. I went to Advance and they didn't have it it seemed like. Trying Pep Boys next. It's on the car so I can't tell. Tried clamping it down hardcore, but it seems like that's where my leak is coming from. Sounds like a dirtbike at throttle. Please please help!! I was down there for 6 hours and now I'm just furious..

 

moved.

urgent posts go urgently in the correct forum.



https://www.cobaltss.net/forums/announcement.php?f=68
https://www.cobaltss.net/forums/announcement.php?f=68

 

make your own worse case

 

umm....unbolt, measure, buy gasket, and rebolt with gasket in place?

 

Gee thanks guys. Kinda hard to do while I'm at work and my Dad is at the parts store. And how is this a 2.4 specific thing? That's why I put it in general. It's a header/downpipe for all cars. Thus - general.

 

when i had my old ss/sc i just used the same gaskets from the factory

 

That was the new version of the combo. The old version had 2 bolts at the header to downpipe flange. Stupid, I know.

 

i think the enw version does also...but if not, then i guess i have the old version too. Anyway...have your dad do what i said then? or someone at autozone? they'll gladly do it if it means a sale for them. Really though, if its a 3" collector, wouldnt it have to at least be a 3" wide gasket too?

 

He went to Advance and Pep Boys both - they only had up to 2.5. I know the new style header with 3 holes is 3 inch for sure, but the guy I got it from didn't seem to think it was 3. Regardless, I got some of that high-temp goop stuff. I was told that it makes a descent make-shift gasket. Try that first. If that doesn't work, I'm just taking it to an exhaust shop and having them fit the right damn thing. I was under there all day before work and I'm getting sick of having 2 inches in front of my face to work.

Also, did you guys notice your car being ALOT louder after installing the aftermarket header/dp compared to the factory one? I'm really worried that it's gonna sound like ass. It is a no-cat system right now, but I'm getting a high-flow on soon. Will that help quiet it down any?

 

Well gee George


Yes.

Catless isn't necessary and all it is doing is making your car sound retarded

 

It was a used set-up. 200 for a costly combo is a deal I couldn't pass by. So get a high-flow and it'll certainly quiet things down a bit?

And what is the size of the straight piece where I need to get the new cat welded in? Any clue? How's the Magnaflow one? I think it's like 70-80?

 

header/DP makes the car a LOT louder. it sounds nice and deep and sexy though, but a bit loud for my taste. Im in the market for a quieter catback myself. The cat should quiet it down, and definitely reduce the rasp, just making the exhaust sound even sexier

 

A cat will make it bearable, and it is more than likely 2.5"