Calling TBY. Calling TBY! Andyoak's comments are seriously challenging my memory banks! Perhaps as a chassis builder the Japanese may not have had much success - one championship in the sixties as a constructor (Honda) and have not many of the wins and a number of championships fallen to the hands of Japanese engine manufacturers? Honda powered Williams and McLaren?
http://en.wikipedia.org/wiki/Honda_Racing_F1
F'man, fair to question my broad brush statement about Honda. As a manufacturer team they have had limited success in the two periods they ran. The first in the 60's was interseting because of the way they went about it and arguably cut short prematurely. Without Schlesser's death it is possible to speculate that they had reasonable foundations to build a long term team; but circumstance put an end to that line of thought.
As an engine manufacturer in the 80's they were definately the engine of choice and powered the most successful teams of the time; but they were also allied to the teams with the best chassis at the time too. However, that was a 10 year period starting 30 years ago and that is a long time in F1.
There then followed a period of supplying base engines to Mugen for tuning and developing and these weren't successful. Although i have no proof, my feeling is that Honda were pretty hands-off at this time and this was more of a commercial rather than competetive arrangement.
The last 10 years were pretty ineffectual for Honda with the exception of 2006 when they were best of the rest. The reasons for their withdrawal are well documented but I think most of us here saw the writing on the wall as soon as the Earth car appeared.
Of all the Japanese manufacturers they are considered, amongst the motoring press, the most European in outlook and development and have the longest history in all aspects of motorsport. I would like to see them back as an engine supplier but I don't see it happening for some years to come. It's tenuous but you could argue that Nissan, through their ties with Renault, are the only current Japanese engine on the grid (sponsoring Red Bull as Infiniti).
Galahad succinctly summarised what I was trying to say re Wolfgang's comments... you just cant fault VAG's logic.
As I've said; I think Korea, India and China is where we will see the next complete F1 Manufacturer / engine team coming from.