I'm wondering if the carbs go lean when you open the throttle.
There are a few videos on YouTube on SU repair and maintenance. One speaks to
proper venting and dampening of the dash pots. Something, on the edge of my
memory, about vented versus non-vented fill caps. If the dash pot isn't
properly dampened the mixture goes lean on acceleration as opposed to going
rich, as it should.
Just chatting up the discussion.
Greg
--- On Tue, 6/29/10, Bob Spidell <bspidell@comcast.net> wrote:
> From: Bob Spidell <bspidell@comcast.net>
> Subject: Re: [Healeys] A bit of tuning advice
> To: "Paul Leeks" <Paull@glasgows.co.uk>
> Cc: healeys@autox.team.net
> Date: Tuesday, June 29, 2010, 11:54 AM
> Sounds like valve timing is off.
> You'll need to check the lift of the #1 intake valve at TDC
> to confirm, one way or another.
>
> bs
>
> --------------------------------
> Bob Spidell - San Jose, CA
>
>
>
> After having problems with the poor running of my BN4, I
> put an electronic
> ignition in the distributer (which was also overhauled) and
> rebuilt the carbs
> using a carb kit. However, I still can't seem to get any
> power.
>
>
>
> I am pretty certain that the timing is right (having
> checked it with a timing
> gun), all the electric connections (plugs, cables, etc.)
> seem to be sound and
> I cannot identify any specific problems with the carbs (ie
> leaks around the
> inlet manifold, etc.).
>
>
>
> So I think the trouble is with the setting of the carbs,
> but I have been up
> and down the adjustment nuts (rich to lean and back again)
> without any
> success.
>
>
>
> The symptoms are ... a smooth idle, smooth but very
> sluggish pick-up on
> acceleration accompanied by a loud machine-gun type
> rat-ta-tat-tat!
>
>
>
> Any ideas?
>
>
>
> Thanks
>
>
>
> Paul Leeks
>
> Lancashire
>
> 100/6 BN4
>
>
>
> Glasgows
> Customs House, Customs Way, Preston, Lancashire, PR2 2UW
>
>
>
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