2011/7/1 Alan Seigrist <healey.nut at gmail.com>
> Gergo -
>
> The BN4 H4 carb has a two bolt mount which, if bolted too tight to the
> head, can introduce vacuum leaks in and around the gaskets and spacers
> and what not (too tight can result in warping of surfaces).
>
> The surfaces of all the various bits should be flat and clean, and the
> nuts tightened with 30ish ft-lbs of torque only.
>
> Check that ...
>
> Alan
>
> On 7/1/11, Austin Healey <pajtamuvek at gmail.com> wrote:
> > "It sounds to me like you have a vacuum leak somewhere. Remind me,
> > what model/year do you have?"
> >
> > BN4 1958 - somehow skipped this question.
> >
> > 2011/6/30 Alan Seigrist <healey.nut at gmail.com>
> >
> >> It sounds to me like you have a vacuum leak somewhere. Remind me,
> >> what model/year do you have?
> >>
> >> Alan
> >>
> >> On 6/30/11, Austin Healey <pajtamuvek at gmail.com> wrote:
> >> > Hi Alan,
> >> >
> >> > Thanks! The exhaust is clean. Also checked the plugs, they are clean
> and
> >> not
> >> > dark. The engines does not hesitates on acceleration, but has some
> >> roughness
> >> > below 2.5 if the throttle is held in position going on flat ground.
> >> Especial
> >> > can feel it is decelerating. Not that bad, but still present. The carb
> >> > is
> >> > very sensitive on the mixture adjustment. As small as 1/4 turn can
> make
> >> > difference in reading and feel. Not something I am used to on mini
> >> engines.
> >> > I have bought a set of different advance springs. Though the advance
> is
> >> > working (each), I will experiment with the different springs tomorow.
> >> >
> >> > Gergo
> >> >
> >> > 2011/6/29 Alan Seigrist <healey.nut at gmail.com>
> >> >
> >> >> Gergo -
> >> >>
> >> >> The trick is the exhaust should not have a "smell" and should not
> show
> >> >> smoke. If it smells rich or shows smoke, the mixture is off. Check
> >> >> timing and make sure advance weights are operating and vacuum advance
> >> >> lines are hooked up and operating.
> >> >>
> >> >> Let is know how it is going.
> >> >>
> >> >> Alan
> >> >>
> >> >>
> >> >> On 6/29/11, Austin Healey <pajtamuvek at gmail.com> wrote:
> >> >> > Thanks everybody for the knd words!
> >> >> > I did my first Healey-miles today. Tha car is running well soo far.
> A
> >> >> little
> >> >> > oil from the valve cover gasket and the oil filter case, but no
> >> horror.
> >> >> > After a few joyfull miles came the rain and stopped the fun. Such
> is
> >> >> life.
> >> >> > I have some questions though. When shall I retorque the head?
> >> >> > I have started to adjust the carbs with a WBO. Starange, but the
> car
> >> is
> >> >> not
> >> >> > realy willing to run on afr 1.47. For proper smooth running it
> needs
> >> >> > slightly rich mixture of about afr 12.5-13.5. Is it normal? If I
> >> weaken
> >> >> the
> >> >> > mixture it begings to run rough. I measure the afr at each downpipe
> >> just
> >> >> > below the manifold. The timing has little impact on it.
> >> >> >
> >> >> > Gergo
> >> >> >
> >> >> > PS: Healey forever.
> >> >> >
> >> >>
> >> >> --
> >> >> Sent from my mobile device
> >> >>
> >> >
> >>
> >> --
> >> Sent from my mobile device
> >>
> >
>
> --
> Sent from my mobile device
|