2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

2nd gen N/A engine bay, what a mess

Thread Tools
 
Search this Thread
 
Old Jan 2, 2003 | 02:54 AM
  #1  
Rex_Experience's Avatar
Thread Starter
Against The Flow.
Tenured Member 10 Years
 
Joined: Nov 2002
Posts: 52
Likes: 0
From: Vancouver Island, Canada
2nd gen N/A engine bay, what a mess

So I was doing some rutine engine upkeep the other day and I could barely get at my damn spark plugs! My engine bay is absolutly STUFFED full! It kinda pisses me off, all my friends have huge 350's and 302's and even they have way more working room.

Does anyone have any pic's or Suggestions on how to make your bay a little more spacious?!

Thnx
Reply
Old Jan 2, 2003 | 02:57 AM
  #2  
StarionX's Avatar
Rotary Enthusiast
Tenured Member 05 Years
 
Joined: Jan 2002
Posts: 823
Likes: 0
From: Australia
If you think an 'N/A engine bay' has no room to work in, I suggest you never buy a TII.
Reply
Old Jan 2, 2003 | 03:19 AM
  #3  
Bridgeported's Avatar
Rotary Enthusiast
Tenured Member 05 Years
 
Joined: Nov 2002
Posts: 1,021
Likes: 2
From: -
Here's a way to increase space, increase power, increase reliability (less things to fail), and save weight!

- remove air pump system
- change to stand alone EMS (including ditching the AFM)
- change power steering rack out for manual one
- remove rats nest
- remove cold start system
- change to an electric rad fan
- change to aftermarket intake system
- remove windshield washer system
- remove air conditioning system
- remove EGR system

I'm serious by the way.
Reply
Old Jan 2, 2003 | 03:20 AM
  #4  
Rex_Experience's Avatar
Thread Starter
Against The Flow.
Tenured Member 10 Years
 
Joined: Nov 2002
Posts: 52
Likes: 0
From: Vancouver Island, Canada
Ok, so If I remove the air pump what major function am I loosing? Also, what is the EGR system? Sorry guys, I'm pretty new to the whole "Work on Cars thing". In the past my car just went directly to Campbell River Mazda, but I recently found out they're a bunch of Ripoffs and Don't have a clue to start with about rotaries!

Last edited by Rex_Experience; Jan 2, 2003 at 03:24 AM.
Reply
Old Jan 2, 2003 | 03:35 AM
  #5  
Kai's Avatar
Kai
Rotorphile.
Tenured Member 05 Years
 
Joined: Mar 2002
Posts: 1,296
Likes: 0
From: Richmond/NoVA
Originally posted by Bridgeported
- remove air pump system
- remove rats nest
- remove EGR system
In other words,

-failed emmissions
-failed emmissions
-failed emmissions

I HATE northern Virginia emmissions laws! You guys make it sound so easy to just rip it off and forget it
Reply
Old Jan 2, 2003 | 04:04 AM
  #6  
Rex_Experience's Avatar
Thread Starter
Against The Flow.
Tenured Member 10 Years
 
Joined: Nov 2002
Posts: 52
Likes: 0
From: Vancouver Island, Canada
Ya, it's nice not to worry bout polluting the air. Heck, bush is going to get us all killed waaaay before a little exhaust in the air will!
Reply
Old Jan 2, 2003 | 04:08 AM
  #7  
Net Seven's Avatar
Rotary Enthusiast
Veteran: Army
Tenured Member: 20 Years
Liked
iTrader: (5)
 
Joined: Apr 2002
Posts: 1,470
Likes: 15
From: Mesa, AZ
I heard that if you remove the airpump that the cats will get clogged fast if you dont remove them also. Is that true?
Reply
Old Jan 2, 2003 | 04:23 AM
  #8  
apreludem's Avatar
Rotary Enthusiast
Tenured Member 05 Years
 
Joined: Oct 2002
Posts: 905
Likes: 0
From: houston
air pump is what opens the 5th and 6th ports...i dont think your cats will get clogged (correct me if im wrong please)
Reply
Old Jan 2, 2003 | 04:33 AM
  #9  
Liquid Anarchy's Avatar
We come with the Hardcore
Tenured Member 10 Years
iTrader: (2)
 
Joined: Nov 2001
Posts: 2,456
Likes: 0
From: Springfield, MO
You're Wrong.

The Airpump also supplys air to the ACV valve... which has something to do with emissions and re-burning exhaust...
Reply
Old Jan 2, 2003 | 04:42 AM
  #10  
apreludem's Avatar
Rotary Enthusiast
Tenured Member 05 Years
 
Joined: Oct 2002
Posts: 905
Likes: 0
From: houston
good..see i learned something new aswell thanks for the correction Liquid Anarchy
Reply
Old Jan 2, 2003 | 05:57 AM
  #11  
silverrotor's Avatar
Moderator
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Mar 2002
Posts: 7,592
Likes: 5
From: Toronto, Corporate Canada
Originally posted by apreludem
air pump is what opens the 5th and 6th ports...i dont think your cats will get clogged (correct me if im wrong please)
If you have a 89-91, than you will need the Air Pump to activate the Auxilliary Ports. Irregardless of series, you'll smoke the Cat w/o the Air Pump.
Reply
Old Jan 2, 2003 | 06:49 AM
  #12  
AreExSeven's Avatar
Huh?
Tenured Member 10 Years
 
Joined: Nov 2001
Posts: 1,087
Likes: 0
From: Lost
Originally posted by silverrotor


If you have a 89-91, than you will need the Air Pump to activate the Auxilliary Ports. Irregardless of series, you'll smoke the Cat w/o the Air Pump.
Is Irregardles even a word?

Anyhoo, I did all those things bridgeported said, except for EMS, and I live in Cailifornia, Land of the Strictist Emissions Laws. I just kept em all in the box, and am putting them back in later (air pump and acv mostly). I have much more room to work now. I can change my spark plugs no problem.

When the exhaust goes through the cat, the air pump pulls all the stuff that was filtered out back into the intake and burns it again. Whats funny though, is on my car, the split air pipe wasn't even attached to the acv, and I passed smog with flying colors. My exhaust smells bad and I'm probly buring up my cat, but oh well.
Reply
Old Jan 2, 2003 | 08:25 AM
  #13  
Cwaters's Avatar
Just Messing About
Tenured Member 20 Years
 
Joined: Feb 2001
Posts: 1,020
Likes: 0
From: Just West of Atlanta
Originally posted by AreExSeven


Is Irregardles even a word?


From Dictionary.com:
"Usage Note: Irregardless is a word that many mistakenly believe to be correct usage in formal style, when in fact it is used chiefly in nonstandard speech or casual writing. Coined in the United States in the early 20th century, it has met with a blizzard of condemnation for being an improper yoking of irrespective and regardless and for the logical absurdity of combining the negative ir- prefix and -less suffix in a single term. Although one might reasonably argue that it is no different from words with redundant affixes like debone and unravel, it has been considered a blunder for decades and will probably continue to be so."

<snip>
When the exhaust goes through the cat, the air pump pulls all the stuff that was filtered out back into the intake and burns it again. <snip>
Uh, you've got it wrong here. The Air pump sends it's charge through the ACV where the air can be sent to the cats to provide more fresh O2 for the reaction going on in there. Too much O2 and the cat burns too hot and dies. Too little and it won't work right either. The Cats are not a filter. After a while the chemically charged ceramic-honeycomb brick can loose it's potency or the small passages in the honeycomb can get clogged with carbon and other crud.

Cory
Reply
Old Jan 2, 2003 | 09:17 AM
  #14  
AreExSeven's Avatar
Huh?
Tenured Member 10 Years
 
Joined: Nov 2001
Posts: 1,087
Likes: 0
From: Lost
Well there ya go, learn something new every day. I've never actually looked into what the cat does, thats just what I assumed by pulling things out of the car.
Reply
Old Jan 2, 2003 | 03:01 PM
  #15  
Rex_Experience's Avatar
Thread Starter
Against The Flow.
Tenured Member 10 Years
 
Joined: Nov 2002
Posts: 52
Likes: 0
From: Vancouver Island, Canada
So I've got an s4, if I remove the airpump does this mean i've got to wire the 5th and 6th ports open?

Also, Where do you buy an electric Fan?
Reply
Old Jan 2, 2003 | 03:20 PM
  #16  
Bridgeported's Avatar
Rotary Enthusiast
Tenured Member 05 Years
 
Joined: Nov 2002
Posts: 1,021
Likes: 2
From: -
OH yeah, so remove the cats and the 5-6 ports also so it solves those issues
Reply
Old Jan 2, 2003 | 04:50 PM
  #17  
silverrotor's Avatar
Moderator
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Mar 2002
Posts: 7,592
Likes: 5
From: Toronto, Corporate Canada
Originally posted by AreExSeven


Is Irregardles even a word?
Yes, except It's spelt Irregardless. I've been Americanized.

Please don't ask If Americanized Is a word.
Reply
Old Jan 2, 2003 | 04:58 PM
  #18  
dr0x's Avatar
pei > caek
Tenured Member 05 Years
 
Joined: May 2002
Posts: 4,643
Likes: 0
From: Mars
Originally posted by Bridgeported
Here's a way to increase space, increase power, increase reliability (less things to fail), and save weight!

- remove air pump system
- change to stand alone EMS (including ditching the AFM)
- change power steering rack out for manual one
- remove rats nest
- remove cold start system
- change to an electric rad fan
- change to aftermarket intake system
- remove windshield washer system
- remove air conditioning system
- remove EGR system

I'm serious by the way.
I have about 3/4 of that list done. My engine bay is frigging empty. Can anyone else stand in there while the motor is in it too?
Reply
Old Jan 2, 2003 | 05:02 PM
  #19  
dr0x's Avatar
pei > caek
Tenured Member 05 Years
 
Joined: May 2002
Posts: 4,643
Likes: 0
From: Mars
Originally posted by Net Seven
I heard that if you remove the airpump that the cats will get clogged fast if you dont remove them also. Is that true?
Only the stock cats. A lot of aftermarket ones dont even require an air pump.
Reply
Old Jan 2, 2003 | 09:57 PM
  #20  
Icemark's Avatar
Former Moderator. RIP Icemark.
 
Joined: Apr 2001
Posts: 25,896
Likes: 24
From: Rohnert Park CA
Man, I am still laughting at the guy that thought the spark plugs were hard to reach...

was the oil filter had to change for you too???bet the fuel filter will require a mechanic

and ditching all the emissions equipment on a street car is against the law and lame...
Reply
Old Jan 2, 2003 | 11:47 PM
  #21  
Steel's Avatar
I'm your huckleberry..
Tenured Member 10 Years
 
Joined: Jul 2002
Posts: 736
Likes: 0
From: Tucson, AZ
they're a hell of a lot harder to reach than pist-on engine sparkies are. i cut my hands up plenty redoing my plugs.
Reply
Old Jan 3, 2003 | 06:56 PM
  #22  
White_FC's Avatar
Rotary Enthusiast
Tenured Member 05 Years
 
Joined: Dec 2002
Posts: 1,228
Likes: 0
From: Darwin, NT, Australia
Originally posted by dr0x
Can anyone else stand in there while the motor is in it too?

hehe damm just when I thought I was the only person who had tried this....
Reply
Old Jan 3, 2003 | 09:14 PM
  #23  
I wish I was driving!
Tenured Member 20 Years
 
Joined: Dec 2001
Posts: 5,241
Likes: 84
From: BC, Canada
Originally posted by Cwaters


Uh, you've got it wrong here. The Air pump sends it's charge through the ACV where the air can be sent to the cats to provide more fresh O2 for the reaction going on in there. Too much O2 and the cat burns too hot and dies. Too little and it won't work right either. The Cats are not a filter. After a while the chemically charged ceramic-honeycomb brick can loose it's potency or the small passages in the honeycomb can get clogged with carbon and other crud.

Cory
A little bit of fallacy in here.
Catalytic convertors are a ceramic mesh with a rhodium and platinum alloy (35% platinum, 73% rhodium).

A catalyst (hence the name catalytic convertor) does not react in a reaction, it instead lowers the activation energy (and thus allows the gases to continue the oxidation reaction). No catalyst is used in a chemical reaction.

rhodium helps break NO and CO in CO2 and N2 via:
2NO (g) + 2CO (g) ---(rhodium)----> N2 (g) + CO2 (g)

platinum helps break CO an HC's (hydrocarbons) into CO2 and water via:
2CO (g) + O2 ---(platinum)---> 2 CO2 (g)
C7H16 (example HC) + 11 O2 (g)---(platinum)--->7CO2 + 8H2O(g)

The addition of Oxygen in the platinum reaction is the reason we need an airpump.

The platinum, rhodium nor its cermics can be consumed, only blocked. Certain additives, especially those containing lead, bond to the rhodium and platinum reaction sites, and prevent them from reaching exhaust gases to react. They are still intact, but unable to provide a reaction.

Too much oxygen has no effect, as it would just be in excess of the platinum reaction, or perhaps over-cool the ceramic (which needs 200 celsius or higher to activate), but this is doubtful. Too much oxygen will not burn out your cat.

Your errors: too much air will kill a cat.
Catalytic convertors will loose their potency. (they will work forever given proper conditions). They are not "charged".
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Th0m4s
Build Threads
25
Feb 26, 2019 02:04 AM
mazdaverx713b
Build Threads
48
Apr 21, 2016 06:45 AM
immanuel__7
2nd Generation Specific (1986-1992)
89
Sep 5, 2015 10:23 AM




All times are GMT -5. The time now is 10:32 AM.