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Unread 04-30-2013, 04:23 PM   #1
GlennLever
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Weber

Before you say it, I have read so much about Weber problems, my brain hurts.

It starts fine, low end up to 45 MPH is really ok.

After that it is dead flat, on a slight incline it loses ground.

I really want to be lazy here as I have more than enough to learn on the mechanical injection on the dragster.

Richer jet? where is it and suggestions on size. how do you change it. Pictures please.

This is a true Weber, purchase as the Jeep "Kit". Everything is stock.





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Unread 05-01-2013, 06:03 AM   #2
Matt1981CJ7
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Glenn,

Is that the 32/36? If so, my experiences with it were the same as yours, but not as extreme.

The 32/36 is a step down in performance from a good running Carter, IMO. Mine ran silky smooth, and got good gas mileage, but it lacked "giddy up".

The Weber 38 is really the better suited carb for a 258, IMO.

Matt
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Unread 05-01-2013, 06:53 AM   #3
GlennLever
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Quote:
Originally Posted by Matt1981CJ7 View Post
Glenn,

Is that the 32/36? If so, my experiences with it were the same as yours, but not as extreme.

The 32/36 is a step down in performance from a good running Carter, IMO. Mine ran silky smooth, and got good gas mileage, but it lacked "giddy up".

The Weber 38 is really the better suited carb for a 258, IMO.

Matt
Yes it is a 32/36

Really do not want to buy another carburetor.

Based on everything posted it sounds like the secondary jet is to small from the vendor and needs to be replaced. I guess I'm going to have to re rear all the stuff posted on this ans se if I can find that.
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Rochester, New York 14617-2012
My Cars http://www.leverfamilysite.com/vehicles.htm

My restoration thread here on the Jeep forum
http://www.jeepforum.com/forum/f8/cj...build-1269301/

New FED, Drag Racing Forum (I am an Administrator) at
http://www.frontenginedragsters.org/forum/index.php
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Unread 05-01-2013, 08:05 AM   #4
swatson454
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You might try an F7 emulsion tube in the secondary side as well. Those guys really wake up the midrange and help the main circuit activate like it should.

The secondary jet is the one up top on the driver's side. Large, brass screw head below the filter base. It's got a 2 digit number stamped on the end of it.

Hope it helps!


Shawn
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Unread 05-01-2013, 08:30 AM   #5
sanctified
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I'm good to about 55 but figured it dropped off after that due to my 2.7x gears and 32" tires. I am interested in seeing what you find out and whether you can get it to behave like you want it to.
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Unread 05-01-2013, 12:14 PM   #6
keith460
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My Weber 32/36 suffers somewhat of the same fate. Good low end grunt but kinda fizzles out above 3000rpm.

30 over pistons aren't helping either and I will probably go with a 38 DGS Weber this summer or fall. Already have a Pre computer years distributor installed (1979 model) with spring and initial timing tweaked but haven't been able to get the Jeep out of its winter storage yet for driving due to a very busy traveling work schedule.

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Unread 05-01-2013, 12:18 PM   #7
Balvar24
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Holy clean engine compartment Batman! Are you sure you've ran that thing long enough to identify a problem? Maybe you just need to burn the new off of it?
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Unread 05-01-2013, 12:46 PM   #8
Renegade82
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Ya know Glenn your not helping my feelings of second guessing my choice to buy a Weber K551 (32/36 dgev). In my research I read so much positive stuff on it, sans some tuning qwerks due to fuel pressure. But it seems lately I've been seeing more and more stuff on a negative slant. I never installed it prior to my teardown like I was originally planning to do. I'm just glad theres guys around like swatson454 that seem to have very detailed understanding of Weber carbs and what makes them tick.
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Unread 05-01-2013, 01:28 PM   #9
Matt1981CJ7
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I've never understood why Redline, and others, claim the 32/36 is the best choice for a stock 258, and the 38 is only for modified engines.

Heck, I think they put the 32/36 in cars with engines as small as 2.3L, perhaps smaller.

Matt
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Unread 05-01-2013, 02:31 PM   #10
mwalker649
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I don't know anything about em, but I'm having an 85 CJ restored at V3 Jeep shop in Louisville Ky and we just had the Carb talk. They said they prefer the Weber and have through the years of working with them, learned to re-jet and make em work flawlessly. You might give them a call (on web) ask for Rich and he might tell you what they do.
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Unread 05-01-2013, 04:07 PM   #11
bkeese
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Is that the stock air cleaner? I didn't know they would fit a Weber.
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Unread 05-01-2013, 04:38 PM   #12
Matt1981CJ7
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Quote:
Originally Posted by bkeese View Post
Is that the stock air cleaner? I didn't know they would fit a Weber.
It requires an adapter, which most Weber dealers will have.

Glenn, I highly recommend you contact Tom at Redline. He's a big Jeep fan, also a member here, and he knows the Webers inside and out. Perhaps he'll work out some sort of exchange deal for a 38...it's worth asking.

Either way, I'm sure he'll offer good advice, and he will have the necessary little parts, if you decide to re-jet the 32/36.

Matt
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Unread 05-02-2013, 05:59 AM   #13
bkeese
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How does the 32/36 work with the AMC 150 4 banger?
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Unread 05-02-2013, 06:02 AM   #14
swatson454
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Quote:
Originally Posted by bkeese View Post
How does the 32/36 work with the AMC 150 4 banger?
Probably just about perfect, assuming you have a 2-barrel manifold.


Shawn
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Unread 05-05-2013, 11:36 AM   #15
GlennLever
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Quote:
Originally Posted by swatson454 View Post
You might try an F7 emulsion tube in the secondary side as well. Those guys really wake up the midrange and help the main circuit activate like it should.

The secondary jet is the one up top on the driver's side. Large, brass screw head below the filter base. It's got a 2 digit number stamped on the end of it.

Hope it helps!


Shawn
I have fallen behind here, sorry, what is an "F7 emulsion tube"

I will pull the secondary jet today and take a look, what size do you think it should be? larger than what is there?
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Glenn R. Lever
Rochester, New York 14617-2012
My Cars http://www.leverfamilysite.com/vehicles.htm

My restoration thread here on the Jeep forum
http://www.jeepforum.com/forum/f8/cj...build-1269301/

New FED, Drag Racing Forum (I am an Administrator) at
http://www.frontenginedragsters.org/forum/index.php
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