Nedavno Dave Plowman (News) pise:
| The vacuum advance is a fuel economy thing, and it's not usual to use
| it with twin two choke side draft carbs which are hardly fitted for
| economy. ;-)
So, no modifications necessary? Engine will work fine with no vacuum
I was thinking maybe distributor with only mechanical advance (the one
I have has both mechanical and vacuum).
I used to plug the vacuum advance into one of the manifold runners (not
all four, in my case). Seemed to work fine. Mileage with Solex 44PHHs
was only 1 mpg under that with twin SUs. If you're worried about
pressure stability, put a (small!) vacuum reservoir between the runner
and the distributor somewhere to smooth out the pulses.
Your distributor already has a mechanical advance. While it might (or
might not) work better with a different curve (different springs and/or
weights), there is no need to replace it outright.
First I bought at eBay two Delorto DHLA 40H carbs, and then I found inlet
manifold with two Solex (do not knew which, will see when it gets here)
carbs and a distributor, so I bought that too :-) I will have to see if
there are any openings in manifold.
I knew that my distributor has a mechanical advance, but it also has a
vacuum advance, and I think that I saw somewhere on the Internet that there
are distributors with only mechanical advance (for M10 engine).
I guess I will see when I mount it how it works, and report here.
BTW how to connect cold start system? My Pierburg has combined electric and
water operated choke. I guess on Solex/Delorto/Weber sidedraft carbs it is
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