My '93 ZR-1 came with headers, and I'm considering removing them (missing the AIR tubes, a big no-no in California) and installing stock factory exhaust manifolds. I'd also need the check valves and tubing up to but not including the diverter valve. Any out there? I also need a PKE antenna if there's one lying around out there.
Thanks,
__________________ Bob Courtemanche
1971 350 4 speed (270 HP)
1993 40th Anniversary ZR-1 (405 HP)
1993 Geo Metro Convertible (52 HP)
and 5 others...
well Im sure someone here has a set laying around, I have a set off of my 90 but the exhaust on the 93-95 were a better design than the 90-92 or so it is said, the catylitic converters bolted on and it was a easier way to have the set up for removal.
anyway not to start a war but im interested in the headers let me know if and when you are looking to sell them
Location: This city NEVER sleeps! Frank's back yard!
Dude - do you have cats on the car? Ain't no way any inspection centre is going to know the difference, and unless they test your cold start hydrocarbons (very unlikely), the AIR system isn't tested regardless. I would keep the headers, and run it through the e-test.
Dude - do you have cats on the car? Ain't no way any inspection centre is going to know the difference, and unless they test your cold start hydrocarbons (very unlikely), the AIR system isn't tested regardless. I would keep the headers, and run it through the e-test.
The Cats are there, cheapo replacements, installed earlier this year. It's just so damned obvious, when you look at the AIR diverter valve, that's there's nothing hooked to the outlet side... I'd just as soon put the OEM manifolds on, which were supposedly equivalent to "shorty" headers, and not have to deal with a possible rejection, which in California can be a BIG headache.
I've got a year to sort it all out, next emissions test due 12/05.
__________________ Bob Courtemanche
1971 350 4 speed (270 HP)
1993 40th Anniversary ZR-1 (405 HP)
1993 Geo Metro Convertible (52 HP)
and 5 others...
Dwight is right, you are going to spend a fortune replacing the headers with stock stuff and for no good reason - not to mention giving up some HP. If you're that concerned about the smog inspectors noticing the AIR being disconnected then have someone weld a bung on and connect it - or just make it look like it is. This has got to be much cheaper than changing out the whole system. If you hook up the AIR tubes to the headers you can also wire the AIR pump to be always on and use it to help pass the test. I am working on doing this right now and it looks to be a matter of just cutting the orange/black wire off the small power plug and replacing it with the always hot wire which is labeled E on the big grey plug. This should make the AIR pump run constantly when ever it is plugged in. I plan on plugging it in shortly before arriving at the test facility. The extra oxygen should get the cats hotter and at the same time dillute the exhaust with a little fresh air. I'll be trying this approach soon and I'll let you know how it goes.
__________________
Robert
Oregon Director, ZR-1 Net Registry
91 ZR-1 #431 Black/Black
Lingenfelter 368 CID, MSD Coils, Magnecor wires, SLP CAI, Denso IT22 plugs, SRP 160 stat, underdrive pulleys, Alcon 4 piston front calipers, 3.33 gears, Custom 3in exhaust with Stainless Works headers, Random Tech bullet cats, X-pipe, Warlock mufflers and electric cutouts, Lightweight flywheel, Ron Davis radiator, Camber brace, Hurst shifter, DRM coilover suspension.
481 rwhp / 406 rwtq
I understand where you are coming from. In cal. the smog restriction are very strict when you get a smog your car is hooked up to a low speed dyno and gone though very carfully if you don't pass smog, the cpu from the smog station will send a notice to DMV and let them know what has happened. then you will have to go to the BAR and have them check your car out. If they do not think you car is smog legal they have the right to inpound your car for 30 days and of coures you have to pay for all of it. On top of all this if you ever get pulled over by the cops out here and they find your car not smog legal they can also inpound your car.
Somtime it's just not worth it
if the stock stuff ain't there, you won't pass no matter how clean the car blows.
sorry but I sold my last set. I do however have the plumbing for the EGR and tubes and such.
make me an offer and they are yours.
even though it's a hassle, I would bolt the stock stuff up, run her through, and then put those headers back on!!!
the headers do really help the LT5 more than some other cars by broadening the power band and delaying the power drop off above 6500 rpms. the engine will pull pretty hard past 7 with the headers vs straining a bit over 6500 with the stock manifolds.
you might also look around for the callaway "chief" stuff. it looks bone stock, uses the stock cat, but eliminates the factory "neck down" going into the big entry pipe. similar to the 90-92 style, so if you after a stock look, you'll need the 93/95.
since the car is over 10 years old, why not just add the air pipes to the headers??? my bet is that would get you by the visual inspection and wouldn't hurt power at all.
LPE did this on his cars and they make it through unless the inspector is a stickler for details.
most people don't even know what the LT5 is much less have a book for the emissions controls. get it "looking" close to stock, and you will sail through most likely.
sorry but I sold my last set. I do however have the plumbing for the EGR and tubes and such.
make me an offer and they are yours.
The EGR stuff is all there. I'm only missing the AIR tubing, check valves, and piping from the diverter valve. Do you have this stuff? There are two ckeck valves per side, and a bunch of piping that passes under the car, clamps, etc.
Thanks to all for the advice, I'm still weighing the options. As I said, the car already made it through smog as is in July.
__________________ Bob Courtemanche
1971 350 4 speed (270 HP)
1993 40th Anniversary ZR-1 (405 HP)
1993 Geo Metro Convertible (52 HP)
and 5 others...
The EGR stuff is all there. I'm only missing the AIR tubing, check valves, and piping from the diverter valve. Do you have this stuff? There are two ckeck valves per side, and a bunch of piping that passes under the car, clamps, etc.
Thanks to all for the advice, I'm still weighing the options. As I said, the car already made it through smog as is in July.
I've got all of that stuff that came off of my 94, including the cats, all the AIR piping, the pump, manifolds, heat shields, complete OEM exhaust system, etc. All was working fine when I removed it for a few small mods. Make me a decent offer and it's yours.
Crap. San Diego is on the top of my list of places to move in the future. Am I domed? Is it that bad out there?
What does CA expect a resident to do when the original cats go bad and you need new cats to replace them when OEM cats are discontinued?
Location: This city NEVER sleeps! Frank's back yard!
They expect you'll do the environmentally smart thing, and drive the car to the dump, and walk everywhere from then on! Next they'll have all the runners hooked up to a portable catalyst to convert all the CO2 into something more environmentally "safe"!
Crap. San Diego is on the top of my list of places to move in the future. Am I domed? Is it that bad out there?
What does CA expect a resident to do when the original cats go bad and you need new cats to replace them when OEM cats are discontinued?
How about keeping the car registered in a different state such as az and then just driving from time to time or have they finallly caught on to this in earth nazi land?
Corvette Store
WTB '93 exhaust manifolds, PKE antenna
ZR1 #234
