-
We've upgraded and reskinned the forum. Notice something off? Email us at [email protected] and we'll fix it.
We have a roller
Goblin-SS
Active Member
- Goblin-SS Active Member
I'm going to have a small racing cat and a magna flow muffler. I'm just waiting to build the exhaust. I need the new shifter cable bracket. Till have have the cables installed the exhaust has to wait.....
Also the lighting in the garage didn't show its true color. It's Chevy racing orange
Also the lighting in the garage didn't show its true color. It's Chevy racing orange
JSATX
Goblin Guru
- JSATX Goblin Guru
On the muffler note, I'm seriously considering running nothing but a cherry bomb. I think it would look really cool and match the rest of the frame well. It's so so cheap too, no idea what it would sound like though.
http://www.jegs.com/i/Cherry+Bomb/5...3&cadevice=m&gclid=CLLj4pXD8s8CFdgOgQod-_APKw
http://www.jegs.com/i/Cherry+Bomb/5...3&cadevice=m&gclid=CLLj4pXD8s8CFdgOgQod-_APKw
I.e. one step away from open pipe.
Silverback
Well-Known Member
- Silverback Well-Known Member
Great looking build - I'm envious!
BAR-AIR
Well-Known Member
- BAR-AIR Well-Known Member
Your Goblin is coming along nicely (looks awesome). I'm kind of working with the same issues on the exhaust. Are you going to hang the cat and muffler entirely off the zzp header? Take a look at running a 1 1/4" tube between the brackets for the rear spoiler (trying to get Adam to make up some extra spoiler brackets that can be welded to that tube and then bolted into the car). With mine that tube will run about 3" above the muffler plenty of room to add tabs and insulators between the muffler and tube. As for the cat Walker makes CalCats (California emissions compliant and only about 7" in overall length). I was having issues finding a place to do the exhaust bends locally (ended up going to Mandrel bends exhausts on web easy to deal with and can do 180 degree bends on a 3" radius smallest I found).
Bruce
Bruce
BAR-AIR
Well-Known Member
- BAR-AIR Well-Known Member
Good Evening,
Here are a couple of photos of the exhaust with the mocked up of the tube running across. The J tube still needs to be cut down then the muffler can be mounted. At that point I can locate the tabs on the muffler and tube (with snap in insulators) for support. The additional 02 bung is going to be for the tuning probe.
Last edited by a moderator:
BAR-AIR
Well-Known Member
- BAR-AIR Well-Known Member
That is a full CARB compliant catalytic converter on a home made down pipe. (I'm on the road until Thursday I can get you the numbers). I spent a lot of time trying to come up with a exhaust that would pass the NYS DOT registration requirements. So here are the good and bad of it. Good... looks good on the car, actually did the tune on the car with it and was able to get the engine idiot lights to go out. Bad... extreme heat with it on melted the exhaust insulators in a matter of minutes. So I have a call into the tuner I'm not sure if I clogged the catalytic converter on the initial start ups (fouled out the first set of plugs in the first 10 starts). Or the additional of the supercharger is just too much for that catalytic converter. So right now I'm going to reinstall it for the DOT inspection and then pull it off unless I can get it to work. The biggest problem I'm having is the tunes are completely different with the two different exhaust systems. Current tune works good with the cat'ed exhaust, but with the 3" exhaust runs good with normal driving but as soon as you really get into the throttle acceleration is definitely lacking (hesitation like the lack of back pressure is letting the power that should be going to the wheels is going out the exhaust) and if you let up on the throttle I'm getting a back fire out of it.
