[Mgs] H4 or HS4 carbs on an MGA 1600 and Electronic Ignition

[Andrew Lundgren]

If it were me, I'd put a set of points in the tool box in case the
electronics fail and not worry about the carbs.

But my cars need me to spend money and time on things that are broken, and
I'm not that much of a purist. I go original generally but it doesn't need
to be the same year if something else works out. But my cars will never be
concourse.

I've got a 70 B with electric ignition and non original engine, and a 78
with SUs, that has been converted to chrome and lowered.

Andrew

On Jan 9, 2018 6:32 PM, "Eric Russell via Mgs" <mgs at autox.team.net> wrote:

> I can't imagine any significant power difference between H4 & HS4 carbs.
> The throats are the same. I suspect the HS4 carbs will be a little less
> leak-prone. (the rubber grommets on the H4 float bowl tend to be a weak
> point, IME) I don't think HS4's came with the decel valve in the throttle
> plate - if they did that could be a small difference in power.
>
> I am not a fan of replacement electronic ignition systems. When they work
> they work just fine. But when they don't work, replacement of the entire
> unit seems like the only option. With points, an occasional tune-up keeps
> it working fine. And if something does go wrong when you're on the road, a
> tiny kit with spare points & condensor is almost surely all you'd need to
> get going again.
>
> Eric Russell
> Mebane, NC
>
>> Date: Tue, 9 Jan 2018 10:52:13 -0600
>> From: "Robert J. Guinness" <guinness at stclegal.com>
>> To: mgs at autox.team.net
>> Subject: [Mgs] H4 or HS4 carbs on an MGA 1600 and Electronic Ignition
>>
>> I bought an MGA 1600 with HS4 carbs conversion and a crane fireball
>> electronic ignition.? I would like to go back to a stock set up.? What
>> are the *significant* pros and cons for doing so, for example power
>> (rather than ease of maintenance)?? I know the H4s, but I am unfamiliar
>> with working with HS4s (same with points vs electronic ignition).
>>
>>
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