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Unread 04-02-2008, 10:00 PM   #1
breakthru
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WEBER Carb Pics...

Can someone direct me to some pictures of installed Weber 34/34 carbs... especially their linkage on a CJ. Thanks.

Casey

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Unread 04-03-2008, 07:49 AM   #2
SuB8HaVeN
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There's my Weber 34/34. I know, my engine bay is a mess. I still haven't cleaned it from the last time I went wheeling. But note the Holley fuel pressure regulator. You will need one for the Weber 34/34, I got mine from Summitracing.com. Also, for the spring, I just attached it to that bracket on the intake manifold. Works for me.
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1961 Willys 4x4 Wagon L-226 I6 T90 (restoration also in progress)
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Unread 04-03-2008, 08:22 AM   #3
CJ Chet
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Don't worry about the linkage. Just remove it and run the cable right to the carb.
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Beer is the answer - it doesn't matter what the question is!

'86 CJ7, 265 CI, DUI, TF999, Borla, Weber, 4" BDS Lift.
'04 AEV RUBICON.
'00 TJ Sahara.
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Unread 04-03-2008, 08:24 AM   #4
breakthru
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thanks so much!
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Unread 04-03-2008, 08:25 AM   #5
breakthru
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what's a fuel pressure regulator do? I don't have a computer anymore, will that affect the need or no need for one?

Casey
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Unread 04-03-2008, 09:25 AM   #6
SuB8HaVeN
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What happens is that your stock fuel pump is designed to give the stock Carter BBD 7psi of fuel, and the Weber is only designed to handle 3-3.5psi. I ran my Weber 34/34 without a FPR for a while, but it ran rich as could be and never ran right. After installing the FPR, it seemed like I just gained 50hp and no more running rich!
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1961 Willys 4x4 Wagon L-226 I6 T90 (restoration also in progress)
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Unread 04-03-2008, 11:20 AM   #7
CJ Chet
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Quote:
Originally Posted by SuB8HaVeN View Post
What happens is that your stock fuel pump is designed to give the stock Carter BBD 7psi of fuel, and the Weber is only designed to handle 3-3.5psi. I ran my Weber 34/34 without a FPR for a while, but it ran rich as could be and never ran right. After installing the FPR, it seemed like I just gained 50hp and no more running rich!
X2! Just make sure it's a HOLLEY regulator (Mr Gasket is garbage).
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Beer is the answer - it doesn't matter what the question is!

'86 CJ7, 265 CI, DUI, TF999, Borla, Weber, 4" BDS Lift.
'04 AEV RUBICON.
'00 TJ Sahara.
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Unread 04-03-2008, 11:51 AM   #8
Mike Romain
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Quote:
Originally Posted by SuB8HaVeN View Post
What happens is that your stock fuel pump is designed to give the stock Carter BBD 7psi of fuel, and the Weber is only designed to handle 3-3.5psi. I ran my Weber 34/34 without a FPR for a while, but it ran rich as could be and never ran right. After installing the FPR, it seemed like I just gained 50hp and no more running rich!
Someone should put a pressure gauge on the stock fuel filter's output. Remember the center outlet goes to the carb at full flow for the tube's size and the 'top' outlet goes back to the gas tank.

I was told it is a metered output to the return line restricting the back flow so the carb sees 4.5 psi 'if I remember right', and upon inspection confirmed this visually. The outlet to the return line has a metered hole in it about 50% of the opening's diameter. The carb output is full flow.

I was thinking that this hole could just be expanded until the leftover going to the carb couldn't go above 3.5 psi.

Some days I think too much too though, but...?
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Unread 04-03-2008, 12:23 PM   #9
CJ Chet
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This works well:

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Beer is the answer - it doesn't matter what the question is!

'86 CJ7, 265 CI, DUI, TF999, Borla, Weber, 4" BDS Lift.
'04 AEV RUBICON.
'00 TJ Sahara.
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Unread 04-03-2008, 12:47 PM   #10
SuB8HaVeN
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Amen brother, don't buy anything but the Holley. I bought the Mr. Gasket from Advance auto parts and that thing was leaking a river of fuel out of the regulator. Garbage...
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1961 Willys 4x4 Wagon L-226 I6 T90 (restoration also in progress)
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Unread 04-03-2008, 03:18 PM   #11
breakthru
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Anyone got a link or part number to this Holley FPR? Thanks.
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Unread 04-03-2008, 06:56 PM   #12
CJ Chet
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Ask and ye shall receive!

http://store.summitracing.com/partde...5&autoview=sku
__________________
Beer is the answer - it doesn't matter what the question is!

'86 CJ7, 265 CI, DUI, TF999, Borla, Weber, 4" BDS Lift.
'04 AEV RUBICON.
'00 TJ Sahara.
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Unread 04-03-2008, 08:26 PM   #13
86cj7jgn
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Hey Cj Chet,
Nice install on the regulator, gauge & filter. What size fuel hose did you use?, and, where did you get that K&N filter? Do you have a PN# for it? I have looked everywhere for one with a weber base.
Thanks
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Unread 04-03-2008, 08:42 PM   #14
Indy
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I run the extra inlet as an overflow back to the tank, never had a problem with too much pressure.
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Unread 04-04-2008, 06:08 AM   #15
CJ Chet
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Quote:
Originally Posted by 86cj7jgn View Post
Hey Cj Chet,
Nice install on the regulator, gauge & filter. What size fuel hose did you use?, and, where did you get that K&N filter? Do you have a PN# for it? I have looked everywhere for one with a weber base.
Thanks
That's standard 3/8" fuel injection hose. I had to fabricate the filter base. I used the bottom piece of a Mr. Gasket unit. Using a piece of phenolic board, I had it laying around, I traced and cut out the Weber shape and fixed it into the bottom of the Mr. Gasket piece using small screw and epoxy. Once you have that you can just order the K&N filter and Extreme Flow top by SIZE rather than application. It flows QUITE nicely.
BTW: I also put a bead of RTV around the bottom (let it set up real good before installing) to act as a seal to the carb (like an o-ring).

__________________
Beer is the answer - it doesn't matter what the question is!

'86 CJ7, 265 CI, DUI, TF999, Borla, Weber, 4" BDS Lift.
'04 AEV RUBICON.
'00 TJ Sahara.
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