crowz

I ordered a catback corsa system for my 87 convertible today and it doesn't seem to come with new bolts at the cat to exhaust point. Suggestions on where to get new bolts?

I know when I installed the power effects exhaust on my 86 the bolts were in horrible shape so I'm betting I'm going to run into that again. So it would be really great to order new bolts so I'll have them for the install.


Anyone with the corsa kit have any suggestions or tips on installing this? Looks easy but who knows.

mtwoolford

installed a Corsa cat back on a 96, slightly different exhaust, but, hey it's just a bolt on exhaust. Did mine with the car on jackstands; put pieces in place but don't cinch anything down until everything is where you want it to be...a couple of little bottle jacks really helps getting and holding everything up in place.

Did your's come with the "TorquaClamps" or some other such name (possibly Italian) for big muffler clamp? They worked pretty well.

I put some anti seize on the pipes where they slipped together; also on all the threaded fasteners. Really nothing to it.

Oh, now would be a good time to get some new exhaust hangers, or at least the rubber parts thereof.

On my car I love the sound...NO DRONE at cruise...nice growl during acceleration...the sound at idle is a look at me, I'm special kinda sound, not an obnoxious "give me a ticket, I know I have it coming" kinda sound; yeah we all know what that is.

SJW

The Corsa I installed on my '94 LT1 car came with everything I needed. I think I did re-use the bolts at the cat, but if yours are in bad shape, I'd suggest you measure them and get replacements while you're waiting for the Corsa system to arrive. Any decent auto parts store should be able to hook you up with what you need, or possibly even the hardware section at Lowe's or HD, if you know what sizes you need. Consider buying stainless steel bolts for corrosion resistance. As mtwoolford recommended, slather all bolts and clamps with anti-sieze, and you'll thank yourself for it years later.

It's not a difficult installation. Just take your time, be patient, and do a good job. It's mostly common sense, but do read the installation instructions that come with it. They're pretty well written.

Live well,

SJW

Joe C

I've installed a couple corsa cat-back systems on L98 cars. overall, fairly simple. as for the hardware needed to connect to the main cat, plain old hardware store nuts/bolts will do. the size needed is M10-1.5 x 50 - you may opt for stainless. I always use anti-seize on exhaust hardware, especially with stainless. one thing to give a good inspection is the forward hanger (just aft of the main cat) - inspect the rubberized dogbone, and replace if necessary. i'm thinking the hanger is still available from GM, or as reproduction - about $12-$15. my corsa systems fit extremely well, although you will need to fiddle around for the perfect fit and alignment. the band clamps are quality, and torque specs are called out in the installation instructions - 35# i'm thinking. if you are in doubt on any of the rubber hangers - front and rear, bite the bullet and replace. on my last 90, the "pipe to differential" clearance ended up at .5-.75 inch.





overall corsa is a top shelf product - well made with quality fit and finish. you WILL be a happy camper with this system! BTW, i'm retrofitting the 86-91 corsa, cat back system to my 85. this will be system #5. i'm replacing the entire system from exhaust manifolds to the mufflers, and every nut/bolt and hanger in the system. the front y-pipe is walker stainless - catless - 2.5 mandrel bent, with a magnaflow super high flow main cat, and the corsa catback.

anyway, good luck with the installation. post a couple pics when done, and let us know how everything worked out -

crowz

Will do on the picture posting. They didn't ship yesterday when I ordered so hopefully they will ship out today. Once I get the tracking number I'll have an idea how long I have to gather stuff up.

I wanted to put the power effects kit like I had on my 86 on the 87 convertible but they are pretty much out of business is the opinion I got talking to them. Since no droning was a must the corsa was my only real option.

Christi@n

ASAP I want to get too a corsa catback for mine 1995.

Did you said you used jackstand to install exhaust, how many 4 or just 2 to raise just front end??

dizwiz24

Thread hijack:

But I really wish corsa made a bigger pipe lightweight titanium exhaust (like they do for other cars) for the c4.

WVZR-1

Everything including "development" requires potential sales profitability and I certainly don't see potential sales driving the required development. Requires way to much tooling.

QCVette

Take a look at the Corsa Installation instructions. They cover it pretty well.

http://www.corsaperformance.com/medi...ll/INS5043.pdf

I used this info when I did a catback on my '88. Pretty easy. I reused the bolts to the cat. It might help to try spraying them with WD40/PB blaster/or your favorite for a few days prior to trying to take them off.

I put a Corsa catback on my '95 this year and it went pretty well too, but completely different from the L98 systems. The L98 systems are just the rear y pipe and mufflers.

Good luck with your project, it should look and sound a lot better.

mtwoolford

I actually ran the front wheels up some generic plastic wheel ramps; I used jackstands in the back; I'm no means petite, and I was able to slide under the car with sufficient clearance to accomplish what needed to be done.

Christi@n

I use ramps too, just i'm not so practical to get rear end on jack stand after front end is ramped.

Do you lift with floor jack on rear diff?

mtwoolford

well I guess you could but the exhaust system is in the way

Assuming the front is already on a jackstand or ramp, I usually put my jack underneath the bottom of a rear shock mount and jack up one wheel at the time.

One thing, when placing a jack stand or jack underneath the car, remember there are brake and fuel lines in the same general area...be careful, ... don't pinch anything.

crowz

Well this is getting annoying fast. I ordered the corsa exhaust from zip-corvette Tuesday. But it was late in the day so I figured heck they just didn't get it out that day. Site showed "In Stock". Also the receipt email said I would receive an email when it shipped.

I called today to find out if it had shipped. Nope. Was told that I would receive an email when it shipped. Well its 11:30 tonight so I guess it didn't go out today either.

I'll call tomorrow and see what the deal is. They better not pull the "its out of stock" crap. I know it seems a bit early to get ill but Ive had crappy luck with everything Ive ordered for my vette lately with 99% being the website shows in stock but it wasn't.

I host store sites for a living so I know just how easy it is for a company to keep that accurate if they would bother.

Joe C

most places don't stock some of these big ticket items, but are just the middle man in the process. i'd bet zip just has the exhaust system drop shipped directly from corsa. hang in there - I've dealt with zip in the past, and directly with corsa - both are stand-up companies. if you should cancel the order, PM me before you re-order elsewhere -

Tom@Zip

Crowz,
Feel free to contact me directly, at 800-962-9632 ext 240 so I can look into this on your behalf.
Kind Regards,
Tom @ Zip

Christi@n

I've heard that a frame twist can happen this way, we wont to twist vette

Christi@n

Have you got a quote for mine 1995? Cat back

Tom@Zip

Christian,
Here is a link to the different Corsa systems available for the C4 Corvette.
The 95' LT1 cars would use EX-591,
I hope this helps,
Tom @ Zip

mtwoolford

better safe than sorry

Christi@n

How about shipping cost??

Sent me a PM if you want