I heard that the HKS Cast Manifold would allow you to keep the stock air pump in place. If had elimanted all other emission controls stuff and keep the air pump. Use the stock piping for the airpump to run the air down onto My high flow cat. Would that be enough to pass emissions???? Or would I need to keep my EGR vavle too??

In theory it would sound like it should work to have a Single Turbo 3rd-gen to pass emissions.

If any one out there had tested this or tryed this let me know.

Manny

 

rotaryextreme had a t60-1 with a hi-fi housing on it and the air pump fit. I've been meaning to try this so I can verify....

 

OK.... here's what I have to say....

I got my T04S to pass a 'dyno type' test here in Maryland with an electric smog pump from a 97 vette rigged up to the main cat AND 15% denatured alcohol in the tank for the test. The stock RX7 pump seems to be superior to the wimpy electric vette one, so you might get by without running the alcohol in your tank if you use the stock RX-7 pump.

I didn't have an ACV or EGR or any of those stupid solenoids running... just a main cat + air + alcohol.

http://www.zeroglabs.com/rx7/emissions.htm

Brian

 

Cool!!!
Thanks for the reply Spyfish007 and Brian.
I have a TSo4 and I hope the stock airpump will fit when everything is together. I will try it without the alcohol mix on my first test. And will add it in if it does not pass with just the stock air pump.

I just do not want the hassle of pay someone extra $$ to pass me ever year. And do not really want to
Register my Rx-7 as a Collectible so it would not have to do a emissions test.

Manny

 

bump

 

When going for emmissions testing, I imagine you also set your boost to it's lowest setting; but has anyone tried this?

If you still have the vacuum operated secondary throttle, wire it permanently closed. Or remove the linkage from the primary to secondary plates. This would only allow the primaries to operate which reduces total air flow to the engine with higher velocities. You might have to lean the fuel mixture out a little.

 

Sounds like something to try.

Manny

 

Would running higher octane gas help emissions? Like if I dumped a gallon or two of Toluene in the tank beforehand?
-Jedon

 

I have the new apex'i kit and it lets you retain the airpump and stock cat to pass emissions

 

With the Apexi kit can you just buy the manifold? Or do they just sale it in a kit?

Manny

 

I got the new apex'i kit from Tony at rotary xecret 7. The kit came with everything to bolt the turbo on and to keep the airpump. I was surprised that when i first bolted it on, the turbo sits so low and the filter is so long and has a lot of clearance but I later learned that I could fit the airpump on there and pass smog with it if i wanted to

 

I can't imagine that they ever get into any real boost where you live (if so, I'm not moving there!).

I MD, the max that my boost gauge showed during the test was about 0-1 PSI) ... They really baby it if you sit in the car with them and watch em.

Brian

 

It would probably increase the amount of fuel that goes out the exhaust unburned. In that case, it would get much worse emissions.

Just put an FC/FB 13B header on it, hooked up to a converter, spliced into the rest of your exhaust, run the airpump. Never will go into boost and you know the airpump will fit. After the test, put the turbo goodies back on.

If you think that's nuts, I know plenty of people who swap engines every 2 years to pass emissions... then freshen up the "good" engine and pop it back in for another 2 years and put the "clean" engine back in storage! Hey, it's what my plan is, unless someone's figured out how to make a bridge port pass an I/M240

 

Off topic: What county are you in that requires emmisions testing?

 

Cuyahoga! (aka Cleveland - see location)

One of 17 counties that require testing here. Some people I know just register their cars in a different county - my '85 is still registered in Franklin county (lived there for 3-4 months) so no emissions worries until next March. Then I have to worry because it doesn't have a cat on it. If I wasn't in enough trouble with the state for other licensing issues, I'd just keep the car registered to my parents' address in Columbus and hope nobody cross-referenced that to my tax forms