What can I pass emissions with?

Einstein · 10-16-2008, 11:22 PM

Greetings,
I have my motor apart on a bench at work. The question is: what can I do and still pass emissions? I was hoping to do emissions removal per RR and possibly DIY porting. I live in Cherokee county in Georgia. Here is what we have to pass.

All 1995 and older model year vehicles will receive a four-part inspection:

* A visual inspection of the catalytic converter to check for tampering or removal.
* ASM2 or Accelerated Simulation Mode Test - A dual-mode test including a 25/25 test = 25 percent load at 25 MPH and a 50/15 test = 50 percent load at 15 MPH.
* A tailpipe exhaust emission test.
* A fuel cap inspection to check for adequate seal.

The first and last are the easy ones. It's those darn middle ones that will probably get me.

Thanks in advance.

djmtsu · 10-17-2008, 07:24 AM

Run two cats and use either the stock air pump, or an electric one from a Corvette, or an Envoy/Trailblazer.

Good luck!

stylEmon · 10-17-2008, 09:56 AM

if it's a turbo, disconnect the wastegate rod. Its real easy, just a little clip. I did it with the turbo installed. This will keep them off the boost.

I ran the air pump right to the cat.

http://87rx7.blogspot.com/2007/06/ho...t-my-wire.html

djmtsu · 10-17-2008, 10:39 AM

Whoops!! I meant to say run the air pump directly to the cats.

FerociousP · 10-17-2008, 12:44 PM

im guessing the middle test is to keep people from running too retarded timing??

i've passed with:

'87 n/a
- no emissions, one aftermarket cat fed with air from an air pump, retarded timing, and 5 bottles of ISOHEET on 1/4 tank, passed with 212 out of possible 220 HC ppm, and the CO were close too

'89 n/a
- stock motor, emissions, no cat (had a gutted cat on there when I bought it. I didn't even know it was gutted. Maybe thats why it was so loud), passed with 8 PPM and only a few CO.

7s are weird...

Einstein · 10-17-2008, 05:17 PM

Anyone know if I can take any of the solenoids and stuff off? What I am trying to do is clean up the engine bay. I plan on running a cat, but don't want the others.

Also anyone able to pass with any porting?

Atkins Dan · 10-18-2008, 12:39 PM

you can still pass with engine porting just as long as the air pump and cat are working correctly you will be fine.

Dan

Einstein · 10-18-2008, 03:43 PM

Sounds good, thanks guys. Now I just need to put the motor back together

RETed · 10-19-2008, 05:22 AM

It depends what kinda numbers you're trying to get under...

-Ted

Einstein · 10-21-2008, 07:55 PM

Good point. I'll call a station and find out. Thanks.

savannafc4me · 10-24-2008, 11:14 PM

I was wondering can I pass with Headers and a mild Street port??????? I live in California.

savannafc4me · 10-24-2008, 11:16 PM

I was wondering can I pass with headers and a street port????

Max777 · 10-24-2008, 11:51 PM

Quote:

Originally Posted by savannafc4me

I was wondering can I pass with headers and a street port????

As far as I know headers would be illegal in cali because they eliminate the 2 pre-cats, and knowing how strict the emissions are over there, I would say no.

but you could always bolt up a stock mani and gutted pre-cats and pass fine.

I have a stock mani, as well as the 2 small pre-cats for sale if you need them btw.

mfisher12 · 10-27-2008, 10:14 PM

i have an 86 N/A with no emissions components and a racing beat true dual exhaust and pine-apple racing 5th and 6th port sleaves and i ran a practice emissions test: HC 668ppm NOx were very low due to the richness. surprisingly CO and CO2 were close but still failed.
cats and air pumps are the key

Einstein · 10-27-2008, 10:20 PM

Wow - go HC's!! I know that I have to get under 150 HC's. I don't remember the other stuff. Still haven't had time to get that info.

10-16-2008, 11:22 PM	#1
Einstein Rotary Fan in Training Join Date: Oct 2008 Location: Knoxville, TN Posts: 71 Rep Power: 17	What can I pass emissions with? Greetings, I have my motor apart on a bench at work. The question is: what can I do and still pass emissions? I was hoping to do emissions removal per RR and possibly DIY porting. I live in Cherokee county in Georgia. Here is what we have to pass. All 1995 and older model year vehicles will receive a four-part inspection: * A visual inspection of the catalytic converter to check for tampering or removal. * ASM2 or Accelerated Simulation Mode Test - A dual-mode test including a 25/25 test = 25 percent load at 25 MPH and a 50/15 test = 50 percent load at 15 MPH. * A tailpipe exhaust emission test. * A fuel cap inspection to check for adequate seal. The first and last are the easy ones. It's those darn middle ones that will probably get me. Thanks in advance. __________________ Past: 89 RX-7 Turbo II Past: 88 10th Anniv RX-7 Turbo II

10-17-2008, 07:24 AM	#2
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 4,043 Rep Power: 22	Run two cats and use either the stock air pump, or an electric one from a Corvette, or an Envoy/Trailblazer. Good luck! __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

10-17-2008, 09:56 AM	#3
stylEmon Rotary Fanatic Join Date: Feb 2008 Posts: 125 Rep Power: 18	if it's a turbo, disconnect the wastegate rod. Its real easy, just a little clip. I did it with the turbo installed. This will keep them off the boost. I ran the air pump right to the cat. http://87rx7.blogspot.com/2007/06/ho...t-my-wire.html __________________ See the Rebuild Process Here Curious About Deadband Timing? The BLACK BEAST is For Sale

10-17-2008, 10:39 AM	#4
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 4,043 Rep Power: 22	Whoops!! I meant to say run the air pump directly to the cats. __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

10-17-2008, 12:44 PM	#5
FerociousP I-had-a-bad-experience... Join Date: Feb 2008 Location: M'boro Posts: 1,046 Rep Power: 19	im guessing the middle test is to keep people from running too retarded timing?? i've passed with: '87 n/a - no emissions, one aftermarket cat fed with air from an air pump, retarded timing, and 5 bottles of ISOHEET on 1/4 tank, passed with 212 out of possible 220 HC ppm, and the CO were close too '89 n/a - stock motor, emissions, no cat (had a gutted cat on there when I bought it. I didn't even know it was gutted. Maybe thats why it was so loud), passed with 8 PPM and only a few CO. 7s are weird... __________________ '15 Juke Nismo '06 MX-5 GT SOLD '04 S Silver RX-8 GT Track Day Use SOLD '90 Black TII vert w/ Sprint RE stock port/turbo DD dyno (242.6whp@5500rpm @12psi 8psi@redline) and (250ftlbtq@4800rpm @13psi) SOLD '89 GTUs 6p TII SOLD, '87 sport SOLD, '79 SA stock SOLD '91 B2600i 4x4 w/ Rx-8 LSD SOLD

10-17-2008, 05:17 PM	#6
Einstein Rotary Fan in Training Join Date: Oct 2008 Location: Knoxville, TN Posts: 71 Rep Power: 17	Anyone know if I can take any of the solenoids and stuff off? What I am trying to do is clean up the engine bay. I plan on running a cat, but don't want the others. Also anyone able to pass with any porting? __________________ Past: 89 RX-7 Turbo II Past: 88 10th Anniv RX-7 Turbo II

10-18-2008, 12:39 PM	#7
Atkins Dan Premium Vendor Join Date: Feb 2008 Posts: 265 Rep Power: 18	you can still pass with engine porting just as long as the air pump and cat are working correctly you will be fine. Dan __________________ 82 SuperCharged rx-7 {my toy not the daily driver anymore now under restoration} 88 B2200 rotary powered with a 7inch Camden SuperCharger !RIP! Jan/4/2007 2001 626 5-speed 80k on the clock all stock {Truck replacement} 2005 MAZDA6 V6 WAGON now that is a pimping ride all stock for the moment.. Paid off WWW.AtkinsRotary.com

10-18-2008, 03:43 PM	#8
Einstein Rotary Fan in Training Join Date: Oct 2008 Location: Knoxville, TN Posts: 71 Rep Power: 17	Sounds good, thanks guys. Now I just need to put the motor back together __________________ Past: 89 RX-7 Turbo II Past: 88 10th Anniv RX-7 Turbo II

10-21-2008, 07:55 PM	#10
Einstein Rotary Fan in Training Join Date: Oct 2008 Location: Knoxville, TN Posts: 71 Rep Power: 17	Good point. I'll call a station and find out. Thanks. __________________ Past: 89 RX-7 Turbo II Past: 88 10th Anniv RX-7 Turbo II

10-24-2008, 11:14 PM	#11
savannafc4me The Newbie Join Date: Oct 2008 Posts: 14 Rep Power: 0	I was wondering can I pass with Headers and a mild Street port??????? I live in California.

10-24-2008, 11:16 PM	#12
savannafc4me The Newbie Join Date: Oct 2008 Posts: 14 Rep Power: 0	I was wondering can I pass with headers and a street port????

10-27-2008, 10:14 PM	#14
mfisher12 Rotary Fan in Training Join Date: Oct 2008 Location: SC formally form northern VA Posts: 31 Rep Power: 0	i have an 86 N/A with no emissions components and a racing beat true dual exhaust and pine-apple racing 5th and 6th port sleaves and i ran a practice emissions test: HC 668ppm NOx were very low due to the richness. surprisingly CO and CO2 were close but still failed. cats and air pumps are the key

10-27-2008, 10:20 PM	#15
Einstein Rotary Fan in Training Join Date: Oct 2008 Location: Knoxville, TN Posts: 71 Rep Power: 17	Wow - go HC's!! I know that I have to get under 150 HC's. I don't remember the other stuff. Still haven't had time to get that info. __________________ Past: 89 RX-7 Turbo II Past: 88 10th Anniv RX-7 Turbo II