I just repaced by dual SUs (HS-4) with a Weber downdraft. The weber starts
faster and is easier to maintain. No balancing (not really that hard) and not
so many little linkange parts to piddle with, no dashpot oil to add.
On Wed, 31 May 2000, David G.Butcher wrote:
> Thanks Bill,
> It sounds like you've got exactly what I'm hoping for: hassle free
>reliability and an improvement that's noticeable.
> I've already done the manual choke conversion you suggested. It's a definite
>improvement -- at least the car is driveable now -- but I'm hoping for better
>things yet.
> Thanks,
> Dave
>
> > Hi Dave,
> The only thing I can tell you about having replaced stock ZS carbs
> with twin HIF's is
> i) it passed emissions without a catalytic converter
> ii) it sounds nicer
> iii) my wife said it is running as well as it ever has since I have owned
> it (1 1/2 years).
> The latter is probably most important because she professes not to
> understand the lure of the B.
>
> Comparing it with any of the other possibilities is beyond my capabilities
> and understanding.
>
> Also, it was fun to do and I learned a whole lot.
> You might also add to your possibilities converting the ZS to a manual
> choke so you don't have to fiddle
> with the manifolds and exhaust systems, etc.
>
> Regards and I'll be looking for more learned responses to your question, too.
>
> Bill
>
> At 09:45 AM 05/31/2000 -0700, you wrote:
> >Hi all.
> >I'd like to replace my stock ZS carb to improve power, reliability, fuel
> >economy and emissions (why not ask for everything?). My car is a daily
> >driver and I need to pass our local air emission test when all is said and
> >done.
> >So far I've heard everything -- twin HS4's, twin HS6's, single Weber
> >downdraft. I think the only consensus at this point is the dual Weber
> >sidedraft conversion wil probably not allow me to pass emissions, so I've
> >ruled that out.
> >I don't have first hand experience with any of these configurations. Any
> >insight, advice, comments will be very appreciated.
> >Thanks,
> >Dave
> >1979 MGB
>
> <
>
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