1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Something fishy.... Did 12As have O2 snesors?

Thread Tools
 
Search this Thread
 
Old Jul 15, 2004 | 03:39 PM
  #1  
Tanjo's Avatar
Thread Starter
Royale with cheese
Tenured Member 15 Years
 
Joined: Jan 2004
Posts: 1,256
Likes: 0
From: Las Vegas, by way of Poulsbo, WA
Something fishy.... Did 12As have O2 snesors?

http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW

It says its for a 12A, but it also says it has a bung for an O2 sensor. Weird.
Reply
Old Jul 15, 2004 | 04:14 PM
  #2  
cdrad51's Avatar
Lorem ipsum dolor sit ame
Tenured Member 10 Years
 
Joined: Nov 2003
Posts: 3,262
Likes: 1
From: The Net
No they don't originally, but it can be installed. I think that's what he's talking about when he says pre-installed. That's sweet in fact, I'd like to have it. being carburated, it allows you to fine tune the a/f ratio.
Reply
Old Jul 15, 2004 | 06:54 PM
  #3  
peejay's Avatar
Old [Sch|F]ool
Tenured Member: 25 Years
Liked
Loved
Community Favorite
 
Joined: May 2001
Posts: 12,870
Likes: 574
From: Cleveland, Ohio, USA
It doesn't allow you to fine tune, but it does let you know in which direction the carb is grossly misadjusted

O2 sensors tell you rich, or lean, and not much else.
Reply
Old Jul 15, 2004 | 07:14 PM
  #4  
cdrad51's Avatar
Lorem ipsum dolor sit ame
Tenured Member 10 Years
 
Joined: Nov 2003
Posts: 3,262
Likes: 1
From: The Net
and what else do you want?
Reply
Old Jul 15, 2004 | 07:30 PM
  #5  
seanrot's Avatar
Always waiting for parts!
Tenured Member 20 Years
iTrader: (2)
 
Joined: Feb 2003
Posts: 1,637
Likes: 23
From: Illinois
Originally posted by peejay
It doesn't allow you to fine tune, but it does let you know in which direction the carb is grossly misadjusted

O2 sensors tell you rich, or lean, and not much else.
Darn, guess I should just get rid of my wideband O2. Not.
Reply
Old Jul 15, 2004 | 07:38 PM
  #6  
peejay's Avatar
Old [Sch|F]ool
Tenured Member: 25 Years
Liked
Loved
Community Favorite
 
Joined: May 2001
Posts: 12,870
Likes: 574
From: Cleveland, Ohio, USA
Widebands are a whole different ball of wax.

BTW - I found out that the wideband used in VW's retails for only $125. Vehicle in question was a non turbo '00 New Beetle. I dunno if that is the same unit or is compatible with the Honda sensors that all the DIY-WB setuips use.
Reply
Old Jul 15, 2004 | 07:45 PM
  #7  
Eville140's Avatar
Senior Member
Tenured Member 10 Years
 
Joined: May 2002
Posts: 379
Likes: 0
From: Evansville, IN
Originally posted by peejay
Widebands are a whole different ball of wax.

BTW - I found out that the wideband used in VW's retails for only $125. Vehicle in question was a non turbo '00 New Beetle. I dunno if that is the same unit or is compatible with the Honda sensors that all the DIY-WB setuips use.
You can get the VW LSU wideband sensor pretty much all day for less than $50. It's the controller that cost a bit of coin.
I have been using the innovated lm-1 .(Link) for almost a year now and it has not let me down yet. A wideband is probably the best tuning aid you can get.

Later
Randy
Reply
Old Jul 15, 2004 | 08:09 PM
  #8  
peejay's Avatar
Old [Sch|F]ool
Tenured Member: 25 Years
Liked
Loved
Community Favorite
 
Joined: May 2001
Posts: 12,870
Likes: 574
From: Cleveland, Ohio, USA
A wideband is only useful if you know what air/fuel ratio you need!

The BEST tuning aid you can get is a stopwatch, or a drag strip, combined with scientific method. Does it want 13.0, or 13.5 air/fuel? Who cares as long as it picks up another half MPH!

I was tuning my engine and I noted that my O2 was reading .8 through most of the run. Ran, hmm, something or other. I don't remember. I leaned it out a bit. Ran slower. Richened it a bit. .9 and we picked up some MPH. Hmm that must be the sweet spot. Let's richen it some more to confirm. Faster yet! And so on... four or five passes later, I have run out of adjustment on the fuel pressure regulator so I just bypass it entirely, giving the carb the full 6 or so PSI. Running so rich it's painful. But - it still picked up speed.

But the sensor said I was running too rich....


Last edited by peejay; Jul 15, 2004 at 08:13 PM.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Andrew7dg
1st Generation Specific (1979-1985)
3
Aug 6, 2017 01:41 PM
rx7inoregon
Old School and Other Rotary
5
Oct 1, 2015 12:44 PM




All times are GMT -5. The time now is 03:30 PM.