>From rec.autos.antique... No interest here, usual disclaimers apply.
s4usea@fanniemae.com wrote:
> All
>
> Here's one for the books, and any help appreciated.
>
> Spun a bearing on my '52, and had to re-build the bottom half of the
> engine. Now that I've got her back together, I can't get the mixture right.
>
> At the best idle when warm, (set the mixture by the book. Jet adjusting
> nuts six flats out, etc, etc,) she has no power throughout the rev range,
> and runs hot, which means, (to me) that she's running way lean. However, any
> attempts to enrich the mixture pretty much makes her undrivable.
>
> Here's what I've done in trying to correct the problem, and some
> relevent specs.
>
> -Valves set to .019
> -Re-built distributor with a point gap set to .014
> -New timing chain
> -Re-built SU carbs
> -Trottle linkage re-bushed.
> -Static timed the ignition
>
> Here's some caveats:
>
> -Don't know which cam is on her, so the valve setting could
> be .012. I'm going to split the difference in a few days
> and set it to .015 to see if there's any improvement.
>
> -After having the distibutor re-built, timing chain replaced
> lined up all the marks properly on the gears w/correct chain
> config, (to cut to the chase, if the MG shop manual
> is right, the ignition timing is dead-on). The dwell is still
> off by -10degrees.
>
> So that's it. Any help greatly appreciated. I'll even name my first son
> after you if you give me a solution that fixes the problem.
>
> Thanks,
>
> Scott Allen
> s4usea@fanniemae.com
>
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