Hi Bill,
You mentioned carburettor balancing in the subject line, but not
again. Are these HIFs in balance / synchronised?
It's possible for one carb to be sucking more air and be adjusted rich
for fuel flow while the other one is sucking less air and lean, yet the
engine seems to run OK. This can be deceiving.
If you haven't balanced the air flow recently, that's the place to
start. I use a Uni-Syn; there are other types that work as well. Some
get good results with the listening-through-a-rubber hose method that MG
showed in the TD manual. My hearing is not sufficiently acute for that
to work for me.
Another thought-- the HIFs have a temperature compensating device
that, if not adjusted right, can cause the jets to be uneven.
Bob
On Sat, 9 Sep 2006 22:07:38 -0400 saidel@camden.rutgers.edu writes:
> Hi all,
> I've been working to balance a pair of HIF's mounted on a 76B and
> noticed something odd. The seat of the rear carb is noticeably
depressed
> relative to the position of the seat in the front carb when the engine
is cool
> and at operating temperature. The difference lessons but does not go
away
> when the throttle is engaged.
>
> Shouldn't they be approximately equal? What does this situation
> mean (other than one carb is richer than the other)? I'd like to ask
an
> intelligent question, but am not sure what that is in this case (boy,
am I
> opening up myself to appropriate responses!).
>
> Comments anyone?
> TIA,
> Bill S.
> 76B
> BMCSNJ
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