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Old 08-29-2011, 07:30 AM   #1
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Carb Rebuild vs New One?

I posted awhile ago about a strong fuel smell in my garage overnight. I found some cracked lines, replaced the gas cap gasket and still want to drop my tank.

Even with all of the changes I did I still have an overwhelming fuel smell.

What I found is my Weber carb appears to be seeping through the upper gasket. I cleaned it all off the other evening and tightened up the screws on it. I noticed today that I can wipe my finger across the gasket seam and I have a small amount of fuel on it.

I also let it run and blasted the heck out of it with carb cleaner to see if there are any leaks. Nothing showed on the carb itself but the two spacer plates between the manifold and carb have a pretty good size leak.

It was starting by just turning the key if you run it every day. If it sits for a day I have to pump the heck out of it to get it started. It runs fine (I still need to do the nutter bypass and clean up the vac system). It is a six with a 2 bbl Weber and manual tranny. I can't tell what size Weber it is or what model it is.

My question is:

1. Do I get a kit and rebuild it? I called my local garage guy and he said "several hundred for a rebuild" due to time and . . . . . .. . .. I have never done a Weber before so I don't know what to expect. I can't find any numbers on it to even figure out what model and what kit to order.

2. Do I bite the bullet and put in a different carb? If so what brand will fit in place of the Weber without too much pain and suffering on my part? I have seen a few people mention two bbl Holleys and the other forum says to go with a motor craft?

Any and all feedback would be appreciated.

See ya,

Pat

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Old 08-29-2011, 08:49 PM   #2
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Several hundred to rebuild?? New ones are $250 - $300 for the complete kit. Unbolt the carb and re-seal the spacer plates with a good gasket seal.
And as far as sitting for a day and being hard to start....I posted that same question and got several answers...unfortunately none have solved the problem. It's as if the bowl goes dry after several hours of sitting. A lot of speculation as to fuel filter orientation, bad fuel pump, etc...but nothing has panned out to solve the problem.

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Old 08-29-2011, 10:31 PM   #3
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OR, you can spend a little more ONCE, throw away the carb altogether and install one of these slick headache ending solutions...

Howell Engine Developments CA-YJ258 1 - Howell Fuel Injection Conversion (California Legal) for 87-91 Jeep® Wrangler YJ with 258c.i. 6 Cylinder - Quadratec
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Old 08-30-2011, 07:21 AM   #4
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Put on a new carb. Put on a four barrel and a four to two barrel adapter. Or get a 4 barrel intake manifold and not an adapter.
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Old 08-30-2011, 02:10 PM   #5
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I am thinking of doing the same thing do you mind if I ask, how much more power will you get out of it with a 4bbl than stock, or are you just going to burn more fuel?
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Old 08-30-2011, 02:23 PM   #6
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I don't have any real horsepower numbers but to get the full benefits of a 4 barrel you need a 4 barrel intake manifold.
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Old 08-30-2011, 03:31 PM   #7
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OR, you can spend a little more ONCE, throw away the carb altogether and install one of these slick headache ending solutions...

Howell Engine Developments CA-YJ258 1 - Howell Fuel Injection Conversion (California Legal) for 87-91 Jeep® Wrangler YJ with 258c.i. 6 Cylinder - Quadratec
A little more?? You mean like $1000. more. That'll buy a lot of carburetors.
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Old 08-30-2011, 07:53 PM   #8
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A little more?? You mean like $1000. more. That'll buy a lot of carburetors.

how many carburetors you gonna buy over the vehicles life, remember broken miles of vacuum tubing, failed emissions, stalling on inclines and off camber off roading, all of that's eliminated with the kit...

Carburetors are a thing of the past, a dinosaur thats barley hanging on, you get better power and driveability and long term dependability and better fuel mileage with fuel injection that will never compare to a carburetor.

Think you will even be able to find a carb in 10 years? 20 years?

Think about how many mechanics still work on carbs, its getting harder and harder to find that old stubborn guy in the back room at the 40 year old repair shop that can actually make a carb do what its supposed to.....
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Old 08-30-2011, 08:06 PM   #9
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I've heard alot of stuff about fuel injections and Motocraft vs FI vs Webervs Holley?? What is the best and what will be efficent and will they last?? We all know efi would be great! There is a reason for everyone going to it, and why there are no more carburated vehicles. But??? What is the best Carb Swap??
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Old 08-30-2011, 11:52 PM   #10
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Some auto parts stores will give you $$ for you old carb. They might charge you 250 for a new one and give you 50 for your old one..if your looking for a cheaper alternative..
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Old 08-31-2011, 06:53 AM   #11
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Actually you get more power out of a carb. But you sacrifice thing like fuel economy when compared to efi. That's why top fuel, NASCAR, trophy trucks to name a few run cards. The offroad 4 barrels are good at what the do. Plus most people, even on this forum don't have Jeeps or off-road in a fashion that exceeds their limits. It's really us to you to know how you want to use your Jeep and will a carberator fill your need.
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Old 08-31-2011, 07:28 AM   #12
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Not sure about the rest, but the reason NASCAR uses carbs is because it is in the rules. They are switching to fuel injection next season.
As for the carb, I would just as soon buy a new one unless I was short on cash. If I planned on keeping the vehicle indefinitely, then I would take a hard look at a fuel injection conversion. A carb really can't compare to fuel injection with regards to economy and reliability.
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Old 08-31-2011, 08:03 AM   #13
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Not sure about the rest, but the reason NASCAR uses carbs is because it is in the rules. They are switching to fuel injection next season.
As for the carb, I would just as soon buy a new one unless I was short on cash. If I planned on keeping the vehicle indefinitely, then I would take a hard look at a fuel injection conversion. A carb really can't compare to fuel injection with regards to economy and reliability.
The main pro for me, in terms of EFI vs Carb, is that EFI is MUCH MUCH more reliable.

Never have to worry about much at all. It can sit for a while, and as long as you clean out the line, it'll start right back up.

That's just my $.02
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Old 08-31-2011, 09:22 AM   #14
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I just don't have the extra $1000 to drop in a FI system. My 56' C is carbed and runs just fine. I don't think they are going to go away in the near future.

Isn't the 4bbl overkill for the 4.2?

I was seriously looking at the ebay 2150's but am worried about seeing the comment about it above. I know everything said and done with delivery and the throttle arm is around $310 to my door (that is a rebuilt one).

Mine is the 32/36 Weber (I have been told). I believe that one is for offroad performance and not for a daily driver? What are the Edelbrocks or Holleys going for cost wise for the carb and adapeters? How hard are they to get running.

What options are there for air cleaners? I have the Weber one and I don't like it. There is no factory one so I would have to try to retro-fit something. I have never liked the open elements ones; except for the K&N sets but I don't want to drop too much on the air cleaner for this.
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Old 08-31-2011, 03:16 PM   #15
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Originally Posted by Hemi YJ View Post
Actually you get more power out of a carb. But you sacrifice thing like fuel economy when compared to efi. That's why top fuel, NASCAR, trophy trucks to name a few run cards. The offroad 4 barrels are good at what the do. Plus most people, even on this forum don't have Jeeps or off-road in a fashion that exceeds their limits. It's really us to you to know how you want to use your Jeep and will a carberator fill your need.
WOW, Where do YOU get your information from?

Let me take a minute here and prove you wrong.

Every EFI kit available for the Jeeps gives you more power over a carb, I personally have driven Jeeps before and after both the Howell and Mopar FI conversion, and they drive 100% better, have more power, and are easier to start and drive. It even says this in the description (Normally you cant believe what you read, but its been this way for years, and it is true, no false advertising complaints so far...).

Comparing NASCAR to a YJ is ridiculous. In NASCAR, the carbs are purpose built to do one thing, FULL THROTTLE, all the time. there is no mid throttle built into them (some road races like Sears Point have some mid throttle, but this sacrifices top end, which is not needed at Sears Point), and an idle setting is a courtesy so the driver doesnt have to hold the throttle open in the pits. They dont care how quickly a NASCAR can stop and go in traffic......

Trophy Trucks, you mean the trailer queens meant to look pretty?

You are right, people dont all go off road on theese forums, but everyone can appreciate the drivability difference and mileage gaine a EFI kit brings.

Ultimately, you are correct, to each his own, everyone's opinion varies, but personal experience, the EFI kits breathe new life from an old engine.

some swear by carbs, when you cant get one anymore, guess where they will be?

So, whats the chance we can can all the NASCAR talk and stick to Jeeps, I believe someone posted before me nascar is going fuel injection next year, so there goes any last bit of your argument.

Oh and for all you young'uns Sears Point is now Infenion raceway, its located in Sonoma, local to me, and I still know it by sears point, sorry if this confused you.
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Old 08-31-2011, 04:17 PM   #16
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To piggyback on 2xs' point... carburators are old technology. The only things they still make with carburators are really rudimentary type of things, like grass mowers, and generators.

There was recently a shift (About 10 or so years ago) in the Marine world from Carburated 2 Stroke to Fuel Injected 4 stroke. The differences are like night and day.
The old carburated 2 strokes were unreliable if they sat too long (the carb would get clogged), and they ran really rich and really loud (2-stroke, duh.)
The new 4 stroke EFIs are quiet as a mouse, and sip fuel, when compared to the same HP class 4 stroke Carburated equivalent.

But let's go back to Jeeps, I believe I saw a comparison of the different engines that Jeep went with back in the early 90's...
First was Carburated, and gave about 150 HP, then they went to MFI and that increased both the HP and Torque to about 170 HP. Then when they went to SFI, it increased to 190 HP with an increase in torque.

These are just numbers, and to each their own.

I plan on buying a CJ7, and I want a carburated 304. But that's for nostalgia purposes. For a DD, I'd definitely do the TFI mod.
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Old 09-01-2011, 04:49 AM   #17
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Quote:
Originally Posted by 2xs

WOW, Where do YOU get your information from?

Let me take a minute here and prove you wrong.

Every EFI kit available for the Jeeps gives you more power over a carb, I personally have driven Jeeps before and after both the Howell and Mopar FI conversion, and they drive 100% better, have more power, and are easier to start and drive. It even says this in the description (Normally you cant believe what you read, but its been this way for years, and it is true, no false advertising complaints so far...).

Comparing NASCAR to a YJ is ridiculous. In NASCAR, the carbs are purpose built to do one thing, FULL THROTTLE, all the time. there is no mid throttle built into them (some road races like Sears Point have some mid throttle, but this sacrifices top end, which is not needed at Sears Point), and an idle setting is a courtesy so the driver doesnt have to hold the throttle open in the pits. They dont care how quickly a NASCAR can stop and go in traffic......

Trophy Trucks, you mean the trailer queens meant to look pretty?

You are right, people dont all go off road on theese forums, but everyone can appreciate the drivability difference and mileage gaine a EFI kit brings.

Ultimately, you are correct, to each his own, everyone's opinion varies, but personal experience, the EFI kits breathe new life from an old engine.

some swear by carbs, when you cant get one anymore, guess where they will be?

So, whats the chance we can can all the NASCAR talk and stick to Jeeps, I believe someone posted before me nascar is going fuel injection next year, so there goes any last bit of your argument.

Oh and for all you young'uns Sears Point is now Infenion raceway, its located in Sonoma, local to me, and I still know it by sears point, sorry if this confused you.
Thanks for starting this post like a dick. I'm sure that its helpful. There was a blanket statement before my post stating that fuel injection gives you more HP. Simply not true. EFI can't come close to dumping as much fuel and air as a carberator. Yes you give up ease of use and fuel economy but that's not what we were talking about. If you don't know where to get a new carberator you probably shouldn't be working on any vehicle. I can think of atleast ten places off the top of my head that have them in stock in my area let alone the internet.

I agree for all around use I prefer EFI. More to the point, direct injection. If you want to argue about it throttle body injection is like running a carberator compared to direct injection. It be better to get an intake manifold and all the appropriate hardware from 4.0L and put it on a 4.2L than go with Howell. Hell, swap the whole 4.0L in and lighten the front end up like 200lbs.

I got rid of my 4.2L and scrapped it and through in a Hemi. I have direct injection, double overdrive, 450+HP, 20mpg.
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Old 09-01-2011, 07:16 AM   #18
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EFI is out; not enough cash for that.

Back to my original question (if anyone has any info on it).

Try to rebuild my Weber or go another route and pick up a new 2bbl? I have never opened a Weber and the last carb I rebuild was in the early 90's on an Dodge PU.

Is there a place that I can send the Weber to be rebuild for a fair price?
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Old 09-01-2011, 09:07 AM   #19
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Get a good rebuild kit, be patient/maticulus in taking it apart, get some old coffee cups to keep all your small parts in, write stuff down, clean it good and put it back together.

I had the same anxiety about taking apart my t-case...but I did it! Just take your time, you can rebuild it!
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Old 09-01-2011, 12:21 PM   #20
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Thanks for starting this post like a dick.

It be better to get an intake manifold and all the appropriate hardware from 4.0L and put it on a 4.2L than go with Howell. Hell, swap the whole 4.0L in and lighten the front end up like 200lbs.
Yea, I do that sometimes, sorry.

I plan on doing this swap soon, im buying an 89 with a Weber on a 4.2, Ill either swap in a 4.0 or do the head from a 4.0 swapped onto a 4.2.

I might have an Weber lying around soon, might be good for a spare....

Oh, and yes I do know where to get a carb, but I have not had the privilege of rebuilding one since 1990, that one was a Quadrajet, WAY different then a Weber....
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Old 09-01-2011, 07:59 PM   #21
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[QUOTE="2xs"]

Yea, I do that sometimes, sorry.

It's cool. I'm probably not being as nice as I could or should be.

I like the idea of swiping a 4.0L in. It's just such a better motor. And you can pull one from so many different Jeeps. And they are cheap.
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Old 09-01-2011, 08:00 PM   #22
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Not sure how my post got put in with your quote. Weird stuff.

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