ボルボ直5・直6エンジンはやはりポルシェが関係していた。

ボルボの直６・直5のエンジン昔からポルシェが関係していた。
との話があり、

私は直４の１６バルブに乗っていて信じていたのですが。

エンジンの振動がどうも乗用車ではなく不定期でいじったエンジンみたい

マフラーが高価なステンレスが標準

当時サイレントシャフトを三菱が開発し

各社が権利を購入したが

ポルシェが大々的に広告を打って、

市販車に搭載していたということで、信じていたんです。

ボルボ16Vのサイトでも当時ボルボ社に勤めていたという人の話もあり。

何んとボルボのホームページを調べてみたら

６気筒の事が書いてあるホームページがあり

http://www.volvocars.com/intl/top/about/news-events/pages/default.aspx?itemid=63

から抜粋

The 260 models disappeared in 1985, and when the 760 was replaced with the new 960 in the summer of 1990, the V6 from France was also replaced with a brand new six-cylinder engine, in aluminium with the cylinders in-line and with just under 3 litres capacity. It was the first example of a new modular engine family – the N series – which still forms the basis of the current Volvo engine programme and with the six-cylinder version turned through 90 degrees since 1998.

The largest version was introduced first. It was called the B6304F but affectionately referred to in-house as the N3P by Volvo engineers. It had been designed and developed in Gothenburg with the aid of Porsche in Stuttgart, primarily in relation to the design of the cylinder head. It was built in Skövde in an entirely new engine plant and was strikingly characterised by state-of-the-art technology such as low weight, compact size, double overhead camshafts, multi-valve technology, advanced combustion chamber design and cylinder bores positioned very closely together. Some oddities were an 11:1 compression ratio and a long stroke, after 22 years with short-stroke sixes.

The output was above the magic 200 hp limit, 204 hp at 6000 rpm, and it had a maximum torque of 267 Nm. Whereas the V6 had been accused of being both tired and noisy, this new engine was responsive and smooth as silk. This was a six-cylinder Volvo engine worthy of the proud heritage and tradition that had begun more than 60 years earlier.

Like the modular engine it was, it was soon accompanied by the sensational five-cylinder version that went into the new 850 GLT, and was turned 90 degrees in the engine compartment, and a couple of years later also the four-cylinder version for the S40 and V40 models.

B6304Fのエンジンのところにでています。