enginehistory.org

The emissions system on my '81 auto has a thermocouple that applies full vacuum advance to the distributor when the engine overheats - maybe retarding the timing does the opposite??

had heard about that one, didn't think auto-rich retarded the timing, though.

How would retarding the ignition clean the plugs?
Some sudden temperature variation that would crack the lead off??

You might be right, the German injector set-up had as long a route from the pump, and they didn't use the stress relieving bends.

ja, das english fadenscheinig installationen und zapfendusen??

Jerry,
I think the visibility aspect would not be much of a problem as the height of the cylinder banks would not be as great as an OHC 4-stroke such as a Merlin or Griffon.
Having said that, the ma ...

The aim of direct injection in two-strokes AFAIK is to reduce the THC emissions; by waiting until the exhaust port is closed very little is blown out the exhaust port.
With four strokes the advantage ...

There is also more flexibility with air cooling in aviation installations, as the velocity of the air is much higher than in an automotive situation - which may be a factor in the near universal adopt ...

Only looked at a few so far, but they're well translated!

Was that a kind of early multipoint fuel injection?
i.e. physically staging the injection further up or down the intake tract depending on induction rate & temperature.

Or did they actually m ...

Are you able to post those graphs?
(interested even if I can't tell you the answer...)

"will cause Sleeve axial displacement by virtue of cam action between something like a radially extending contoured "fin" on the sleeve against something like an axially separated pair ...

Just blowing the dust off my old sleeve valve engine idea after reading the g4g articles in TM. I couldn't see anything about sliding friction/loads ALONG the gear's axis.

So my question is this, i ...

Speaking of the "Romance of Engines", how tender would the bearing be in an 11-cylinder engine?

That's only ~65 degrees between each power stroke, not a lot of time to squeeze any oil int ...

Does anyone know any good links to sites explaining how petroleum was discarded in the early days when kerosene was more valuable and used for lighting?

(I vaguely remember reading somewhere that t ...

I think Graham is referring to the lubrication of the nose case
(maybe a problem with airlocks under some conditions?)

Actually the cooling system may be more prone to air pocket problems than lub ...