Air Cleaner Info - JeepForum.com

 
LinkBack Thread Tools
post #1 of 9 Old 07-28-2011, 07:33 AM Thread Starter
qlfarm
Registered User
1990 YJ Wrangler 
 
Join Date: Jul 2011
Location: State College
Posts: 221
Air Cleaner Info

Can someone post some pictures of the stock air cleaner for a 1990 6 cylinder?

Mine has a Weber 2bl carb on it with some aftermarket crome cleaner and I want to go back to stock. I think I should go back to stock? Not sure if getting cold fresh air into the carb is better than the hot air from the engine compartment? It has been years (a lot of years) since I messed around with a carb on anything other than one of my tractors.

I have been looking for the parts to go back to stock but I am not sure what I am missing and how to get it connected to the carb.

I would post a pict but I don't think I can yet?

Thanks,

Pat

qlfarm is offline  
Sponsored Links
Advertisement
 
post #2 of 9 Old 07-28-2011, 07:39 AM
laffman
Registered User
1990 YJ Wrangler 
 
Join Date: Aug 2005
Location: Roseville
Posts: 268
The #5 post in this thread has pictures of a stock air cleaner mounted to a Weber carb.

http://www.jeepforum.com/forum/f8/ad...r-carb-640470/

Here is the part you need to connect the stock air cleaner to a Weber.

http://www.webercarbsdirect.com/product_p/a1000.htm

1990 Jeep YJ Laredo 4.2 I-6
2010 Jeep JK Islander 3.8 V-6
1982 Jeep CJ-8 Scrambler 304 V-8
laffman is offline  
post #3 of 9 Old 07-28-2011, 07:49 AM Thread Starter
qlfarm
Registered User
1990 YJ Wrangler 
 
Join Date: Jul 2011
Location: State College
Posts: 221
Thanks Laff; I searched and didn't get anything from it.

Where is the best source for a stock cleaner? I have looked on the web but everything ends up just being a filter replacement.

Does the flexible hose go to an external port in the grill?

Sorry about all fo the noob questions.
qlfarm is offline  
post #4 of 9 Old 07-28-2011, 08:09 AM
laffman
Registered User
1990 YJ Wrangler 
 
Join Date: Aug 2005
Location: Roseville
Posts: 268
Good luck finding a stock air cleaner assembly. Try Collins Brothers in TX. They usually have a large supply of used Jeep parts. Other than them, I would say eBay, craigslist or a junkyard is your best bet for an assembly.

Yes, the flex hose does run to the grill.

In my opinion, your not going to help the engine by putting the stock air cleaner on it unless you pull out the vacuum doors in the "snout" of the assembly. These restrict the flow of air. I just wouldn't go thru the hassle of doing it, the performance gain just isn't there. I've always run the air cleaner that came with my Weber carbs without any issues.

1990 Jeep YJ Laredo 4.2 I-6
2010 Jeep JK Islander 3.8 V-6
1982 Jeep CJ-8 Scrambler 304 V-8
laffman is offline  
post #5 of 9 Old 07-28-2011, 10:40 AM Thread Starter
qlfarm
Registered User
1990 YJ Wrangler 
 
Join Date: Jul 2011
Location: State College
Posts: 221
I was looking at going back to the factory one to eliminate the hoses that come from my exhaust system and are just kind of floating around the engine compartment. Once again I can't post a pict and I don't know what they are for? I believe they are reburners for the cat?

These were just disconnected from the air cleaner and are flopping around on the right side of the engine. There seems to be a huge amount of heat coming from them?

Thanks again for all of the info; this is all new to me again. Going from my Cummins to this little thing is a huge change for me.

See ya,

Pat
qlfarm is offline  
post #6 of 9 Old 07-28-2011, 11:22 AM
laffman
Registered User
1990 YJ Wrangler 
 
Join Date: Aug 2005
Location: Roseville
Posts: 268
Those are the Pulse Air tubes. Yes, they are connected to the cat and if they are just open to the engine bay they are putting a lot of heat near the carb.

Keep the air cleaner you have and get a hi-flow cat without an air tube. That will get rid of those tubes.

http://www.summitracing.com/parts/WLK-15637/

Here is a great website for understanding the mess of vacuum lines under your hood. I assume the previous owner put the Weber on. Sound like he didn't do a very good job cleaning up the emission system.

http://home.sprynet.com/~dale02/list.htm

1990 Jeep YJ Laredo 4.2 I-6
2010 Jeep JK Islander 3.8 V-6
1982 Jeep CJ-8 Scrambler 304 V-8
laffman is offline  
post #7 of 9 Old 07-28-2011, 11:37 AM Thread Starter
qlfarm
Registered User
1990 YJ Wrangler 
 
Join Date: Jul 2011
Location: State College
Posts: 221
Crud! It was running a lot hotter than I thought it should so I took it in for inspection and had the mechanic put on a new turbo muffler and tailpipe. Wish I would have known about the cat replacement prior to doing this.

Is disconnecting the pipes an option? Shorten them and connect them to each other? Smash and braze the ends of them?

No they didn't do a very good job of it. There were vac lines everywhere and half of them were open. I think it is running well now just need to do something with these hoses.

Thanks again,

Pat
qlfarm is offline  
post #8 of 9 Old 07-28-2011, 12:21 PM
laffman
Registered User
1990 YJ Wrangler 
 
Join Date: Aug 2005
Location: Roseville
Posts: 268
You can cut them at the cat, crush them flat and fold them over to seal it. More than likely that cat is plugged up, so you would benefit from the hi-flow cat.

If you have open vacuum lines, I'm surprised it runs. All you need are the lines running between the carb, CTO, EGR, evap canister and the distributor. Everything else can go. When I pulled all mine, I filled a 5 gallon bucket with hoses, solenoids and check valves. What a mess they designed.

1990 Jeep YJ Laredo 4.2 I-6
2010 Jeep JK Islander 3.8 V-6
1982 Jeep CJ-8 Scrambler 304 V-8
laffman is offline  
post #9 of 9 Old 08-13-2011, 02:26 PM Thread Starter
qlfarm
Registered User
1990 YJ Wrangler 
 
Join Date: Jul 2011
Location: State College
Posts: 221
Got the new cat on; cleaned up the hoses and crud hanging around.

I did find a nipple off of the downpipe a few inches from the manifold that one of the polution pipes was attached to.

How is the best way to seal this up? I was thinking of heating, crimping and brazing the end shut? Just crimp and bend and let nature take it course? I could also make a cap from the old line and clamp it on?

What do most of you do to seal this off?

Thanks,

Pat
qlfarm is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
need lift info & regearing info stuart2410 JK Wrangler Technical Forum 3 01-18-2009 09:28 AM
air cleaner NYCjeep YJ Wrangler Technical Forum 3 02-16-2006 02:27 PM
Oil in air cleaner? drtdvl YJ Wrangler Technical Forum 10 06-15-2005 01:32 PM
looking for info on a good soft top cleaner Shorty13M TJ Wrangler Technical Forum 5 01-30-2005 08:01 AM
Factory Warranty info? Top info? BlueRidgeRunner TJ Wrangler Technical Forum 5 06-27-2004 03:52 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome