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 Post subject: Weber
PostPosted: Thu May 23, 2013 4:47 am 
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Joined: Mon May 20, 2013 2:40 pm
Posts: 31
Location: Concord, NC
I have a 1979 and 1975 LUV's. I have been poking around this site for awhile and recently joined up. I have seen a lot of post for changing to a weber carb from the original Hitachi. Are these available online? What are the benefits?
Also, occasionally when cut off, my 79 will "deisel" over. I have rebuild the carb, checked all my fuel lines, checked all vacuum lines, and almost put in some dynamite. Any suggestions? :evil:

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 Post subject: Re: Weber
PostPosted: Thu May 23, 2013 8:04 am 
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Joined: Tue Oct 07, 2008 8:07 pm
Posts: 906
Location: N W Arkansas
Make sure you have all the wires hooked back up to the stock carb correctly after the re-build. They have an anti-dieseling solenoid to prevent the very symptom you described. There is the electric choke, the solenoid, possibly more that need reconnected.
Yes, Weber carbs are available online, webercarbsdirect & redline are two good direct sources, places like Summit Racing sell them plus they are all over ebay from lots of independent suppliers. Just be careful it's actually a Weber, there are knock-offs out there. The K696 kit with the 32/36 DGEV electronic choke is probably the best choice.
The main difference in a Weber is the throttle response. Webers are manual secondary, stock carbs are vacuum. As you apply throttle at a set point the manual linkage opens the secondary & adds more fuel mix, no matter the engine rpm. With the vacuum secondary the engine must come to a high enough rpm to produce enough vacuum to open the secondary & add more fuel mix.
It's best to add a fuel pressure regulator, Weber recommends 3psi max fuel pressure, stock fuel pumps are rated 4-7psi.

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'78 Chevy LUV,1.9,4sp,headers,31's,SAS Dana 30,Dana 20,SOA rear w/Aussie Locker, rough body, bought new 12/4/78.
'87 Trooper,2.3,5sp,headers,31's,ball joint flip & spacer,Aussie Locker rear,Superwinch hubs,brush guard w/5.5K winch,more to come.


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