Ringleheim wrote: ↑27 Sep 2020, 05:58
When they were untouchable?
Innovators? The best?
The Honda 1.5V6TT series was boringly conventional, it even used a cast-iron block.
More than anything else, the highly conservative nature of Honda’s [RA168E] design stands out. The RA168E displays no devilishly ingenious features, nor any parts fashioned from ‘unobtanium’ or exotic materials, as had been rumoured. In fact, the block is made from plain old cast iron.
In valve design Honda also took a conservative approach. ...There are no desmodromic actions, no torsion bars nor pneumatic springs; four valves per cylinder are used with each valve being closed in the familiar manner by a pair of concentric springs.
Combustion chamber design is also conservative with compactness, (and hence good burning) and fuel economy is its a primary objective. Following the fashion set by Ferrari twenty years ago, the valves are rather small and arranged at an included angle of 32 degrees, the same angle that was first used on the Cosworth DFV two decades ago. ...From the point of view of valve gear and combustion chamber design then, the cylinder head of this engine is quite unremarkable.
https://www.motorsportmagazine.com/arch ... nda-ra168e
![Image](https://i.pinimg.com/originals/16/de/b9/16deb958ef57b7a0298cecf8bddb804f.jpg)
^ Just an utterly dull,
but properly executed, conventional engine.
The more innovative Honda motors, like the below 500cc GP class four-stroke 48-valve oval-piston V4 fell in the category of "aargh Moto2 engine",
which is fine, it's
ok to a build a four-stroke V8 then convert it to a four-stroke V4, because of a maximum 4 cylinder rule apparently targeting your intended V8, and then have a total failure of an engine.
![Image](https://preview.redd.it/63uxwihnn4x21.jpg?auto=webp&s=f65fec5a0ce5a12c633a85b74f3fb96e1d2e0670)