Question on weber carbs?

Joined
May 15, 2005
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Anchorage, AK
I am running a 32/36 on my 2F. I had to replace my fuel pump because it started leaking. Now I have too much gas to the carb. I need to re-install my regulator. What pressure am I supposed to have coming to the carb?

thanks

Ryan
 
Joined
Oct 31, 2005
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right here
Morse_FJ40 said:
I am running a 32/36 on my 2F. I had to replace my fuel pump because it started leaking. Now I have too much gas to the carb. I need to re-install my regulator. What pressure am I supposed to have coming to the carb?

thanks
Ryan

I think 5psi works well with tthe 32/36.
 
Joined
Oct 8, 2003
Messages
462
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Near Junk
My 38DGAS requires 2-3 PSI or so they claim. I installed pressure reg @ 3PSI setting and truck was bucking at high revs due to fuel starvation. Turned up regulator to 5 PSI setting and still bucking. Removed reg and no issues.

This was a brand new regulator so I assumed I just don't need it. No issues at all on mine without using one. However, tech guy I talked to at a shop who only serviced Webers said I should be using one. Go figure.

AndrewT
 

madoc1

 
Joined
May 28, 2005
Messages
436
Location
spicewood,tx.
the 38 weber we installed had a return line fitting ala original carb so no need for a reg. i know this is useless info if not the same set up, but redline i believe says 3-5#. looks like i am just paddding doesnt it? jim
 
Joined
Sep 21, 2005
Messages
58
Location
miami, fl
i run the same set up; no need of a regulator. I did have to play a lot with different jets to get the truck to run fine at all times. should of bought a 38/38; runs fine now.
 

Pin_Head

 
 
 
Joined
Feb 6, 2002
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OC, CA
As long as you are running a stock fuel pump and not a pump designed for EFI applications it shouldn't matter. Carbs will work well over a pretty broad range of nlet pressure because the float and needle valve determines the fuel level, not the inlet pressure. 32/36 is smaller than the stock Aisin and is more commonly used on 22R 4 bangers.
 
Joined
Jan 19, 2009
Messages
686
Location
Houston Texas
i just in stalled a weber 38/38 on my 83 60 with a regulator set to 2 1/2 and a visible in line filter. It ran fine the first day then after that stater to lurch and buck at high rpms. when i looked at my filter at idle it was full of gas but when I rev it , the filter just drains and dosent refill unless you let it idle.
 
Joined
Apr 15, 2010
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Orlando, Fl
Hi guys how can I tell if I'm runing 32/36 or 38/38 on my 2F? I now it is a weber but don't now the diference
 
Joined
Oct 30, 2010
Messages
154
Location
Washougal, WA
THis thread got me thinking. my cruiser idels fine, and its using a 32/36...... sometimes at high pm driving along it bucks and lurches and if I press the clutch in, it goes to idle. last time it died. like it was not getting gas. It doesn't have a regulator , but it does have a clear fuel filter so I'l check. but could flooding cause the bucking too.
 
Joined
Jul 29, 2007
Messages
831
Location
Keene, Ca.
I run a 32/36 with regulator set to 3psi on my F.5 bored .40 over. I did order the high altitude jetting kit to even out the idle and on road stumbles, misses and farting.
 

Hogan

Three on the Tree
SILVER Star
 
 
Joined
Nov 5, 2003
Messages
874
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Forest Lake MN
I have a 32/36 weber, tried a regulator ran like crap. 86 the regulator and it runs fine with out it.
 

John Smith

In the garage
 
 
Joined
Jun 7, 2004
Messages
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Location
Maryland
i just in stalled a weber 38/38 on my 83 60 with a regulator set to 2 1/2 and a visible in line filter. It ran fine the first day then after that stater to lurch and buck at high rpms. when i looked at my filter at idle it was full of gas but when I rev it , the filter just drains and dosent refill unless you let it idle.
Your issue sounds like fuel starvation due to a plugged up tank or restriction on intake side of fuel pump.
 
Joined
Jan 19, 2009
Messages
686
Location
Houston Texas
Ill have to check that. as far as i know thet have never been replaced. the previous owner had the 60 in Port Aransas Texas for 5 years so there probably dry rotted.
 

Steamer

SILVER Star
 
Joined
Jul 20, 2009
Messages
843
Location
Miami, FL
Weber 32/36 new kyosan pump new fuel lines and a holley low press regulator. Pressure was below 1lb psi at best and would often drop to 0 and starve. Took out the regulator and it's been running great at a steady 3.5 psi. I did have to go up on the jet size.
 
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